Bally B40-BCU-IM-21 Condensing Unit Instruction Manual
- June 13, 2024
- Bally
Table of Contents
B40-BCU-IM-21 Condensing Unit
Product Information: Condensing Unit Installation and
Maintenance
Product Support
Web: www.b-rp.ca/support
This product supports air, water, and remote models. It includes
hermetic, semi-hermetic, and scroll compressors.
General Safety
Only a qualified refrigeration mechanic who is familiar with
refrigeration systems and components, including all controls,
should perform the installation and start-up of the system. To
avoid potential injury, use care when working around coil surfaces
(if applicable) or sharp edges of metal cabinets. All piping and
electrical wiring should be installed in accordance with all
applicable codes, ordinances, and local by-laws.
Important Safety Note
Always disconnect and lock off the main power supply on any
system that will be worked on to avoid accidental start-up of the
equipment.
Inspection
-
Inspect all equipment before unpacking for visible signs of
damage or loss. -
Check shipping list against material received to ensure
shipment is complete. -
If carton is damaged but damage to equipment is not obvious,
file a claim for concealed damage with the carrier. -
If damage or loss during transport is evident, make a claim to
the carrier as it will be their responsibility, not that of the
manufacturer. -
Check the electrical ratings on the unit to make sure they
correspond to those ordered and to electrical power available at
the job site. -
Save all shipping papers, tags, and instruction sheets for
reference by installer and owner.
Handling, Placement, and Installation
When selecting a location for the condensing unit, consider the
following:
-
Loading capacity of the floor or roof. Check building codes for
weight distribution requirements. -
Distance to suitable electrical supply.
-
Distance to the evaporator.
-
Adequate air circulation and ventilation.
-
Close proximity to water source and floor drains (water-cooled
units). -
Accessibility for maintenance.
-
Local building codes.
-
Adjacent buildings relative to noise levels.
-
Wishes of the end user / owner.
Once a specific location is chosen, obtain written approval of
this location from the building and/or condensing unit owner to
avoid disagreement and expense later on.
A fully qualified and properly equipped crew with the necessary
tackle and rigging should be engaged to locate the condensing unit
in position. When lifting the unit, spreader bars and chafing gear
should be used to prevent damage. To reduce vibrations that may be
transmitted through the floor structure, install vibration
isolators under the mounting base. These isolators may be rubber,
cork, or similar materials.
®
Bulletin B40-BCU-IM-20 Part # 1068157
PRODUCT SUPPORT web: www.b-rp.ca/support
see inside back cover for more details
scan:
Condensing Unit Installation and Maintenance
Air, Wat e r a nd Re m ot e M ode ls
H e r m e t ic , Se m i-H e r m e t ic a nd Scroll Compressors
!
WARNING: Only a qualified refrigeration mechanic who is familiar with
refrigeration systems and
components, including all controls, should perform the installation and start-
up of the system.
CONTENTS Page
General Safety …………………………………………………………………………………………………….. 2
Inspection…………………………………………………………………………………………………………….. 2 Handling, Placement
and Installation……………………………………………………………………….. 3
Location……………………………………………………………………………………………………………… 4 – 6
Lifting…………………………………………………………………………………………………………………… 7 Electrical
Information…………………………………………………………………………………………… 8 – 9 Refrigerant Piping
………………………………………………………………………………………………. 10 – 12 Line
Insulation……………………………………………………………………………………………………… 13 Valve
Systems…………………………………………………………………………………………………….. 14 Refrigerant Charging
…………………………………………………………………………………………… 14 – 19 Weight Of
Refrigerants………………………………………………………………………………………….. 20 Compressor
Oils…………………………………………………………………………………………………… 21 Water Cooled
Condensers……………………………………………………………………………………… 22 Recommended
Options…………………………………………………………………………………………. 22 Available Options and Option
Information………………………………………………………………. 23 – 26 Leak Testing
……………………………………………………………………………………………………….. 27 Evacuation and Dehydration
…………………………………………………………………………………. 27 Dehydration
Procedure………………………………………………………………………………………… 28 – 29 System Start-Up Checklist
…………………………………………………………………………………….. 29 Pressure Controls
………………………………………………………………………………………………… 30 Low Temperature Room Pull-Down
………………………………………………………………………… 30 Checking Superheat
…………………………………………………………………………………………….. 31 Sequence Of
Operation…………………………………………………………………………………………. 32 System Operational Checklist
………………………………………………………………………………… 33 System Troubleshooting
………………………………………………………………………………………. 34 – 36 Customer Instructions
………………………………………………………………………………………….. 37 Maintenance Program
………………………………………………………………………………………….. 37 Service Parts
Availability………………………………………………………………………………………… 37 Appendix A: Wiring
Diagrams………………………………………………………………………………. A1 – A17 Appendix B: Refrigerant Line
Sizing Charts…………………………………………………………… B1 – B5 Appendix C: Equipment Start-Up
Sheets………………………………………………………………. C1 – C4 Product Support
Resources…………………………………………………………………………………. 70 -71 “As Built” Service Parts
List………………………………………………………………………………….. BACK
20/04/22
GENERAL SAFETY
IMPORTANT SAFETY NOTE
Only a qualified refrigeration mechanic who is familiar with refrigeration
systems and components, including all controls should perform the installation
and start-up of the system. To avoid potential injury, use care when working
around coil surfaces (if applicable) or sharp edges of metal cabinets. All
piping and electrical wiring should be installed in accordance with all
applicable codes, ordinances and local by-laws.
WARNING
Always disconnect and lock off the main power supply on any system that will
be worked on to avoid accidental start up of the equipment.
INSPECTION
Inspect all equipment before unpacking for visible signs of damage or loss. Check shipping list against material received to ensure shipment is complete.
Should carton be damaged, but damage to equipment is
not obvious, a claim should be filed for “concealed damage” with the carrier.
IMPORTANT: Remember, you, the consignee, must make any claim necessary against the transportation company. Shipping damage or missing parts, when discovered at the outset, will prevent later unnecessary and costly delays. If damage or loss during transport is evident, make claim to carrier, as this will be their responsibility, not that of the manufacturer.
IMPORTANT: Check the electrical ratings on the unit to make sure they
correspond to those ordered and to electrical power available at the job site.
Save all shipping papers, tags, and instruction sheets for reference by
installer and owner.
B50-BCU-IM-20
– 2 –
20/04/22
HANDLING, PLACEMENT AND INSTALLATION
IMPORTANT: When selecting a location for the condensing unit, consideration
should be given to some of the following: (a) Loading capacity of the floor or
roof. Check building
codes for weight distribution requirements. (b) Distance to suitable
electrical supply. (c) Distance to the evaporator. (d) Adequate air
circulation and ventilation. (e) Close proximity to water source and floor
drains
(water-cooled units) (f) Accessibility for maintenance. (g) Local building
codes. (h) Adjacent buildings relative to noise levels. (i) Wishes of the end
user / owner.
When all of the above points have been considered and a specific location
chosen, it is advisable to obtain written approval of this location from the
building and/or condensing unit owner. This may be a means of avoiding
disagreement and expense at a later date.
A fully qualified and properly equipped crew with the necessary tackle and
rigging should be engaged to locate the condensing unit in position. When
lifting the unit, spreader bars and chafing gear should be used to prevent
damage.
be transmitted through the floor structure, vibration isolators should be
installed. Isolators should be installed under mounting base and may be rubber
or cork or equal.
DO NOT USE THE SHIPPING SKID AS A PERMANENT BASE.
The condensing unit should be positioned to allow adequate space for
performing service work.
Indoor and outdoor air-cooled condensing units should be positioned using the
guidelines shown below.
Units equipped with spring-mounted compressors have shipping spacers that are
designed to hold the compressor rigidly during transit to prevent possible
damage. Before operating the unit, it is necessary to remove these spacers. To
remove the shipping spacers, follow these steps:
(a) Remove the upper nuts / washers. (b) Discard the shipping spacers. (c)
Install the rubber cone washers (located in the
electrical box). (d) Replace the upper mounting nuts / washers. (e) Allow 1/16
inch space between the mounting nuts /
washers and the compressor foot.
The unit should be placed on a base, which is level and
even. Units should be lagged to sleepers or support base.
Place unit where it will not be subject to damage by traffic or flooding. On
critical installations where noise is liable to
On units equipped with rigid mounted compressors, check the compressor
mounting bolts to insure they have not
vibrated loose during shipping.
B50-BCU-IM-20
– 3 –
20/04/22
LOCATION: Horizontal Air Flow Condensers and Condensing Units
Width of Condensing Unit
Minimum
If placed back to back the minimum spacing is 2 times the tallest Condenser
height.
2x Height of Tallest Condenser
Minimum
B50-BCU-IM-20
– 4 –
20/04/22
LOCATION: Vertical Air Flow Condensing Units
B50-BCU-IM-20
– 5 –
20/04/22
LOCATION: Vertical Air Flow Condensing Units (cont’d)
B50-BCU-IM-20
– 6 –
20/04/22
LIFTING INSTRUCTIONS
B50-BCU-IM-20
– 7 –
20/04/22
ELECTRICAL INFORMATION
NOTE: All installers should follow the wiring diagram attached to the
equipment electrical compartment cover.
WARNING
All wiring and connections to the unit must be made in accordance with
national as well as local electrical codes and by-laws.
Electrical wiring should be sized in accordance with the minimum circuit
ampacity (MCA) shown on the unit nameplate and applicable electrical codes.
The unit power connections are approved for copper wire only.
Connect the field power supply through a properly sized branch circuit
protection disconnect switch. The entering service fuse must not exceed the
maximum overcurrent protection (MOP) value on the unit data plate.
All systems should use a liquid line solenoid valve (installed at the
evaporator) and should be energized by the room or fixture thermostat. For
systems with a defrost time clock, the liquid line solenoid and thermostat
should be energized by the time clock. Initially set the defrost time clock
(model 8145) as follows:
Air defrost evaporators; 3 per day (every 8 hours) with the time termination
at 45 minutes.
Field connected control circuit wires are terminated directly at the control circuit terminal block in accordance with the appropriate wiring diagram.
Voltage at the unit terminals must not vary more than the allowable variation during start-up and while under full load. If the voltage is normal at the supply with the compressor not running and drops considerably when the switch is closed and the motor is trying to start, there is a high resistance due to undersized wires or faulty connections. Voltage drop between inoperative and full load must not exceed 3% of line voltage. In addition, the phase imbalance at the motor terminals should be within 2% on three phase units.
60 Hz Supply
Power
Allowable Variation
115-1-60
103-127 V
208/230-1-60
197-254 V
208/230-3-60
187-254 V
460-3-60
414-506 V
575-3-60
518-632 V
Electric defrost evaporators; 4 per day (every 6 hours) with time termination
set (Fail Safe) at 30 minutes. Check that the wiring from the defrost
termination thermostat is wired to terminal “X” on the clock and terminates
the defrost cycle when the evaporator coil reaches approximately 55 °F. The
fan delay thermostat wiring should also be checked for proper operation. This
ensures that all water droplets have been refrozen to the coil before the
evaporator fan starts back up.
Note: The above settings are guidelines only and must be re-adjusted to suit
local field conditions and actual evaporator equipment specifications.
Refer to the evaporator installation manual for further information.
Refer to the following wiring diagrams for typical air defrost and electric
defrost wiring arrangements.
50 Hz Supply
Power
Allowable Variation
100-1-50
90-110 V
200/220-1-50
190-242 V
200/220-3-50
180-242 V
380/400-3-50
342-440 V
WARNING
Any deviation or change to the electrical components or wiring as supplied on the original equipment, or noncompliance with the voltage and phase balance requirements without written authorization will void the warranty.
B50-BCU-IM-20
– 8 –
20/04/22
ELECTRICAL INFORMATION (cont’d) Wiring Diagram Cross Reference
Condensing Unit Voltage
208-230/1/60 208-230/3/60 208-230/3/60 208-230/3/60
460/3/60 460/3/60
208-230/1/60
Evaporator Voltage and Type Condensing Unit Type
COPELAND SCROLL
230 Air Defrost Low Profile
Small Scroll
230 Electric Defrost Low Profile
Small Scroll
2x 230 Electric Defrost Low Profile
Small Scroll+ Coresense
2x 230 Electric Defrost Med Profile
Large Scroll+ Coresense
460 Electric Defrost Med Profile
Small Scroll+ Coresense
2x 460 Electric Defrost Med Profile
Large Scroll+ Coresense
COPELAND HERMETIC
230 Air Defrost Low Profile
208-230/3/60
230 Electric Defrost Low Profile
460/3/60 & 575/3/60
208-230/1/60 208-230/3/60 208-230/3/60 460/3/60 & 575/3/60 460/3/60 & 575/3/60
2x 230 Electric Defrost Low Profile
230 Air Defrost Low Profile 230 Electric Defrost Low Profile 2x 230 Electric
Defrost Low Profile 460 Electric Defrost Med Profile 2x 460 Electric Defrost
Med Profile
SEMI-HERMETIC Copelametic Bitzer Discus Discus
Discus Demand Cooling
Diagram Number
S2A1D T3A1A T3A1D T3C6A T4A6A T4C6A
S2A1A T3A1A T4A1A
S2A1A T3B1A T3L1A T4L1A T4A4A
Page
A2 A3 A5 A6 A9 A10
A1 A3 A8
A1 A4 A7 A12 A11
Diagram Number
KA101 LPE101 LPE201 JE101A JE101A JE201A
KA101 LPE101 JE101A
KA101 LPE101 LPE201 JE101A JE201A
Page
A13 A14 A15 A16 A16 A17
A13 A14 A16
A13 A14 A15 A16 A17
for wiring diagrams, see:
Appendix A: Wiring Diagrams
B50-BCU-IM-20
– 9 –
20/04/22
REFRIGERANT PIPING
WARNING
All local codes must be observed in the installation of refrigerant piping.
IMPORTANT PIPING NOTE
Appropriate line sizing practices must be used throughout the installation of
the refrigeration system. Special consideration must be taken when the
condensing unit is installed above the evaporator. REFRIGERATION GRADE COPPER
TUBING MUST BE USED FOR PIPING SYSTEMS.
Piping practice and line sizing charts as recommended by A.S.H.R.A.E. or other
reputable refrigeration standards must be followed to ensure minimum pressure
drop and correct oil return. An inert gas such as dry nitrogen should be
passed through the piping during welding or brazing operations. This reduces
or eliminates oxidation of the copper and formation of scale inside the
piping. For specific piping requirements refer to your local distributor or
sales representative.
Correct line sizing is most critical because of the several factors involved:
(a) Minimum pressure drop to ensure efficient compressor performance.
(b) Sufficient gas velocity to maintain proper oil return to the compressor
under all load conditions.
(c) Elimination of conditions on multiple evaporators whereby oil may log in
an idle evaporator.
Suction lines should be sized on the basis of a maximum total pressure drop
equivalent to a 2°F (1.1°C) change in saturated temperature.
Horizontal liquid lines should be sized on a basis of a maximum pressure drop
equivalent to a 2°F (1.1°C) drop in the sub-cooling temperature. If the lines
must travel up vertically then adequate sub-cooling must be provided to
overcome the vertical liquid head pressures. A head of two feet of liquid
refrigerant is approximately equivalent to 1 psig (6.9 kPa). Liquid line
velocities should not exceed 300 fpm (1.52 m/s). This will prevent possible
liquid hammering when the solenoid valve closes.
Pressure Loss of Liquid Refrigerant in Liquid Line Risers (Expressed in Pressure Drop PSIG and Subcooling Loss °F)
Refrigerant
10′ PSIG °F
Liquid Line Rise in Feet
15′
20′
25′
PSIG °F PSIG °F PSIG °F
30′ PSIG °F
R134a
4.9
2.0
7.4
2.9
9.8
4.1 12.3 5.2 14.7 6.3
R22
4.8
1.6
7.3
2.3
9.7
3.1 12.1 3.8 14.5 4.7
R404A R507
4.1
1.1
6.1
1.6
8.2
2.1 10.2 2.7 12.2 3.3
R407A R407C R448A
4.3
1.4
6.5
2.1
8.7
2.8 10.8 3.5 12.8 4.1
B50-BCU-IM-20
– 10 –
20/04/22
REFRIGERANT PIPING (cont’d)
At the temperatures encountered in the condenser, receiver and liquid line a certain amount of oil is always being circulated with the refrigerant through the system by the compressor. However, at the evaporator temperature, and with the refrigerant in a vapor state, the oil and refrigerant separate. This oil can only be returned to the compressor by gravity or by entrainment in the suction gas. Roof installations leave no alternative but by entrainment for oil return, so suction gas velocity and correct line sizing to maintain this velocity are imperative. Care must be taken
not to oversize the suction line in the desire for maximum performance.
Gas velocity in vertical suction lines must not be less than 1,000 fpm (5 m/s)
and preferably 1,250 to 1,500 fpm (6 to 8 m/s). Important: A suction trap must
be installed at the base of all suction risers of four (4) feet or more in
order to trap oil and allow entrainment in the suction gas.
TYPICAL SUCTION P-TRAP
IMPORTANT PIPING NOTE
If steps of capacity control are supplied on a compressor, provisions must be
made for oil return by sizing suction risers to maintain adequate gas
velocities at reduced refrigerant flow.
During the lower capacity running mode (compressor capacity control energized) oil will collect in the elbow or at U-bend below pipe “B”. This will divert the gas and oil to flow up the smaller pipe “A” at a higher velocity.
IMPORTANT: When welding service valves or any components that may be damaged by heat, manufacturer’s installation instructions must be adhered to. Wrapping components with a wet cloth will help to prevent damage from heat.
IMPORTANT: All suction lines outside of the refrigerated space must be insulated.
B50-BCU-IM-20
– 11 –
20/04/22
PIPING
B50-BCU-IM-20
– 12 –
20/04/22
LINE INSULATION
After the final system leak test is complete, it is important that all
refrigerant lines exposed to high ambient conditions
must be insulated to reduce the heat pick-up and prevent
the formation of flash gas in the liquid lines. Suction lines should be
insulated with 3/4 inch wall insulation,
Armstrong “Armaflex” or equal. To prevent rupture due to condensate re-
freezing, all suction vibration eliminators
on low temperature systems MUST BE COMPLETELY INSULATED. Liquid lines exposed to high ambient temperatures should be insulated with 1/2 inch wall insulation or better. Any insulation that is to be located in an outdoor environment should be protected from UV exposure to prevent deterioration of the insulating value.
REFRIGERANT CHARGING
Condensing units must be charged only with the refrigerant for which they were designed. The type of refrigerant to be used is specified on the name plate of the unit. Installing a liquid line drier between the service gauge and the liquid service port when charging a unit will ensure the refrigerant supplied to the system is clean and dry. This is especially important when charging a low
temperature system. Blend type refrigerants (400 series, i.e. R404A) must not
be vapor charged unless the cylinder is completely emptied into the system.
Weigh the refrigerant drum before and after charging in order to keep an
accurate record of the weight of refrigerant put into the system.
IMPORTANT REFRIGERANT CHARGING NOTE
Overcharging a system can result in poor system performance, personal injury
and / or compressor damage. DO NOT charge strictly by the holding capacity of
the receiver. DO NOT assume that bubbles in a sight glass, when located at the
condensing unit, indicates the system is undercharged.
Note: To estimate the total system requirement, refer to the manufacturer’s
evaporator and condensing unit specifications on typical operating charges and
include the amount for the liquid lines (see tables below). Allow an extra 10%
to 15% safety factor. Ensure the receiver can handle the required charge
during the pump down mode. (Refer to the condensing unit brochure pump down
specifications).
Break the vacuum by charging liquid refrigerant into the receiver side only
(charge through the receiver outlet valve gauge port with the valve in the
open position). Close the valve and then continue to charge through the gauge
port feeding the liquid line and evaporator. Start the compressor and continue
to charge.
Refrigerant may be added at the compressor through the compressor suction
service valve in gas form only. When liquid charging is used, a liquid
charging valve must be installed. While charging the system, special attention
should be paid to the oil level in the compressor.
If charging to the “bubble” method (observing liquid line sight glass), always
use a sight glass located directly before the TXV (thermostatic expansion
valve) for the final indicator.
(see next page for details on Valve Systems)
B50-BCU-IM-20
– 13 –
20/04/22
REFRIGERANT CHARGING – VALVE SYSTEMS
DUAL OR ADJUSTABLE LAC VALVE SYSTEMS:
The system employs an adjustable LAC or ORI/ORD valves to regulate system high
pressure during low ambient conditions.
The design compressor discharge pressure setting for the valve is 150 psig for
medium temperature systems and low temperature systems with hermetic
compressors; and 120 psig for other low temperature systems.
All systems are factory set at the above settings; however, the actual
compressor discharge pressure at low ambient conditions may differ from the
factory settings. If so, the setting needs to be adjusted. Caution: setting
the valve higher than the design setting is not permitted.
Exception: If the system is not used for a walk-in, or a walk-in larger than
3000 ft2, or for medical, scientific or research purpose, the above setting
requirement does not apply.
Figure 7A: Dual Valve Piping Arrangement
Condenser ORI
ORD-4-20/30 Compressor
Receiver
Figure 7B: Single Valve Piping Arrangement
Condenser
LAC (Adjustable)
Compressor
Receiver
Adjustment:
When an adjustment is needed, a pressure gauge should be connected to the
compressor discharge port. Turning the valve stem “clockwise” will increase
the pressure setting, while turning the valve stem “counterclockwise” will
decrease the pressure setting.
Checking and adjusting the valve setting may only be done properly when the
ambient temperature reaches 35F or below
Refer to Sporlan’s installation instructions (bulletins 90-301 and 90-31) for
further details.
WARNING
Fans closest to the headers should not be cycled on standard temperature or
pressure controls. Dramatic temperature and pressure changes at the headers as
a result of fan action can result in possible tube failure.
Fan cycling controls should be adjusted to maintain a minimum of 5 minutes on
and 5 minutes off. Short cycling of fans may result in premature failure of
motor and/or fan blade.
Compressors operating below +10°F SST must have air flowing over the
compressor at all times when the compressor is running.
B50-BCU-IM-20
– 14 –
20/04/22
REFRIGERANT CHARGING (cont’d)
BEH-LINE HERMETIC AIR-COOLED CONDENSING UNIT (WITH HORIZONTAL AIRFLOW CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines)
UNIT MODEL BEHA006L6 BEHA008L6 B EHA010L6 B EHA015L6 BEHA020L6
–
BEHA025L6 B EHA030L6
–
–
R404A R448A
2.0
2.09
2.8
2.92
–
–
5.8
6.1
–
–
–
–
UNIT MODEL
BEHA006M8 B EHA008M8 B EHA009M8
BEHA010M8 B EHA011M8
BEHA013M8 B EHA015M6 B EHA020M6 B EHA015H7 B
EHA020H7
BEHA025M6 BEHA029M6 BEHA025H7 B EHA029H7
BEHA030M6 BEHA035M6 BEHA030H7 BEHA035H7 B EHA040H7 BEHA050H7
(M6/M8)
R404A
2.0 2.8 4.2
6.0
8.6 –
(M6/M8)
R448A
2.09 2.92 4.3
6.3
8.9 –
(H7)
R407C
2.2 3.0 4.5
6.5
9.3 12
(H7)
R22
2.3 3.2 4.7
6.8
9.7 12
BEZ-LINE SCROLL AIR-COOLED CONDENSING UNIT (WITH HORIZONTAL AIRFLOW CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines)
UNIT MODEL
BEZA008L8 BEZA010L8
BEZA015L8
–
BEZA020L8 BEZA025L8 BEZA030L8 BEZA035L8
BEZA045L8
BEZA055L8 BEZA060L8 BEZA075L8 BEZA085L8 BEZA100L8 BEZA130L8 BEZA150L8
–
R404A R407A R448A
2.0
2.2
2.1
2.8
3.1
2.9
–
–
–
3.9
4.3
4.1
6.0
6.6
6.3
8.6
9.4
8.9
11
12
12
18
20
19
23
25
24
–
–
–
UNIT MODEL
BEZA007H8
BEZA008H8 BEZA009H8 BEZA010H8 BEZA011H8 BEZA015H8 BEZA020H8
–
BEZA025H8
BEZA030H8 BEZA035H8 BEZA040H8 BEZA045H8 BEZA050H8 BEZA060H8 BEZA061H8
BEZA070H8 BEZA076H8 BEZA085H8 BEZA110H8 BEZA150H8
R404A R407A R448A
2.0
2.2
2.1
2.8
3.1
2.9
R407C
2.2 3.0
4.2
4.5
4.3
4.5
–
–
–
–
6.0
6.6
6.3
6.5
8.6
9.4
8.9
9.3
11
12
12
12
18
20
19
19
23
25
24
25
39
42
40
41
R22
2.3 3.2
4.7 –
6.8
9.7 13 20 25 43
B50-BCU-IM-20
– 15 –
20/04/22
REFRIGERANT CHARGING (cont’d)
BES-LINE SEMI-HERMETIC AIR-COOLED CONDENSING UNIT (WITH HORIZONTAL AIRFLOW CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines) – COPELAND
UNIT MODEL
BESA005L8 BESA008L8 B ESA010L8 BESA015L8 BESA020L8 B ESA021L8
BESA030L8 B
ESA032L8 BESA035L6/L8 BESA040L6/L8 BESA060L6/L8 BESA061L6/L8 BESA075L6/L8
BESA090L6/L8 BESA100L6/L8
BESA120L6/L8 BESA130L6/L8 BESA150L6/L8 BESA220L6/L8
(L6)
R404A
–
(L8)
(L6/L8)
R407A R448A
–
–
2.6
–
3.0
4.5
–
5.1
–
–
–
8.6
–
8.8
8.6
9.1
8.8
9.6
10.7
10.2
18
20
19
23
25
24
39
42
40
UNIT MODEL
BESA010M8
–
BESA020M8
BESA021M8
BESA030M8
BESA050H8 BESA051H8 B ESA075H8 BESA077H8 BESA080H8 B ESA100H8
BESA120H8 ESA150H8 BESA200H8
R404A R407A R448A
2.8
3.1
2.9
–
–
–
R407C
3.0 –
4.5
–
4.7
–
5.8
–
6.1
–
8.6
–
8.8
–
–
–
–
–
–
–
–
–
18
20
19
19
23
25
24
25
39
42
40
41
R22
3.2 –
20
25
43
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines) – BITZER
UNIT MODEL
BESB010L6/L8 BESB015L6/L8 BESB020L6/L8 BESB025L6/L8 BESB030L6/L8 BESB031L6/L8
BESB039L6/L8
BESB050L6/L8 BESB060L6/L8 BESB080L6/L8 BESB100L6/L8 BESB120L6/L8
(L6)
R404A
3.0 4.4 6.0 8.6
(L8)
(L6/L8)
R407A R448A
3.2
3.1
4.9
4.6
6.6
6.3
9.4
8.9
11
12
12
18
20
19
23
25
24
–
–
–
–
UNIT MODEL
BESB010H8 BESB015H8 BESB020H8 BESB025H8 BESB029H8 BESB030H8 BESB035H8
BESB040H8 BESB050H8 BESB060H8 BESB076H8 BESB090H8 BESB100H8 BESB121H8
BESB150H8 BESB200H8
R404A
3.5 4.4 6.0 8.6
R407A
3.8 4.9 6.6 9.4
R448A
3.6 4.6 6.3 8.9
11
12
12
18
20
19
R407C
3.8 4.8 6.5 9.3
12
19
23
25
24
25
39
42
40
41
R22
3.9 5.0 6.8 9.7 13 20
25
43
B50-BCU-IM-20
– 16 –
20/04/22
REFRIGERANT CHARGING (cont’d)
BQH-LINE QUIET HERMETIC AIR-COOLED CONDENSING UNIT (WITH HORIZONTAL AIRFLOW
CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines)
UNIT MODEL
BQZA008L8 BQZA010L8 BQZA015L8 BQZA020L8
BQZA025L8 BQZA030L8 BQZA035L8
BQZA045L8 BQZA055L8 BQZA060L8
–
R404A R407A R448A
3.5
4.2
3.7
3.8
4.2
4.0
4.6
5.0
4.8
–
–
–
5.8
6.4
6.1
7.4
8.1
7.7
–
–
–
UNIT MODEL
BQZA007H8 BQZA008H8 BQZA009H8 BQZA010H8 BQZA011H8
BQZA015H8 BQZA020H8
BQZA025H8
BQZA030H8
BQZA035H8
BQZA040H8 BQZA050H8
BQZA060H8
R404A R407A R448A
3.5
4.2
3.7
3.8
4.2
4.0
5.8
5.0
4.8
5.4
5.9
5.6
5.8
6.4
6.1
7.4
8.1
7.7
9.6
11
10
R407C
4.4
4.1 5.0 5.87 6.4 8.0 10
BQZ-LINE QUIET SCROLL AIR-COOLED CONDENSING UNIT (WITH HORIZONTAL AIRFLOW CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines)
UNIT MODEL R404A R448A
UNIT MODEL
(E6/M8) (E6/M8)
R404A R448A
(H7)
R407C
(H7)
R22
BQHA006M8
BQHA010L6 BQHA020L6
2.7
2.8
BQHA008M8 BQHA009M8
2.7
2.8
–
–
BQHA010M8
BQHA011M8
–
–
–
BQHA013M8
3.5
3.7
3.8
4.0
BQHA015H7
BQHA015E6
BQHA025L6 BQHA030L6
3.9
4.1
BQHA020E6 BQHA025E6 BQHA030E6
3.9
4.1
4.2
4.4
BQHA020H7
–
–
–
BQHA035E6 BQHA035H7
4.5
4.7
5.0
5.1
–
–
–
BQHA025H7 BQHA030H7
–
–
6.0
6.2
–
–
–
BQHA040H7 BQHA050H7
–
–
7.6
7.9
B50-BCU-IM-20
– 17 –
20/04/22
REFRIGERANT CHARGING (cont’d)
MEDIUM AIR-COOLED CONDENSING UNIT (WITH VERTICAL AIRFLOW CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines)
Single Compressor UNIT MODEL
RECEIVER
TOTAL UNIT CHARGE R404A (lb)
Copeland
Bitzer
90% Full (lb)
Summer (+10%
receiver)
Winter (+10% receiver)
BMS075L 6/8-A BMS080L 6/8-B 70
BMS090L 6/8-A BMS100L 6/8-B 70
BMS100L 6/8-A BMS120L 6/8-B 82
BMS120L 6/8-A
103
BMS130L 6/8-A BMS130L 6/8-B 103
BMS150L 6/8-A BMS150L 6/8-B 124
BMS220L 6/8-A BMS200L 6/8-B 124
BMS075M8-A BMS060M8-B
70
BMS076M8-A BMS075M8-B
70
BMS080M8-A BMS090M8-B
82
BMS100M8-A BMS100M8-B
103
BMS120M8-A BMS120M8-B
124
BMS150M8-A BMS150M8-B
124
BMS200M8-B
124
BMS075H8-A BMS060H8-B
70
BMS076H8-A BMS075H8-B
70
BMS080H8-A BMS090H8-B
82
BMS100H8-A BMS100H8-B
103
BMS120H8-A BMS120H8-B
124
BMS150H8-A BMS150H8-B
124
BMS200H8-B
124
BMS060L8-Z
50
BMS075L8-Z
50
BMS085L8-Z
50
BMS100L8-Z
50
BMS130L8-Z
60
BMS150L8-Z
70
BMS170L8-Z
82
BMS050M8-Z
50
BMS060M8-Z
50
BMS061M8-Z
60
BMS070M8-Z
60
BMS076M8-Z
70
BMS085M8-Z
82
BMS110M8-Z
103
BMS150M8-Z
103
BMS050H8-Z
50
BMS060H8-Z
50
BMS061H8-Z
60
BMS070H8-Z
60
BMS076H8-Z
70
BMS085H8-Z
82
BMS110H8-Z
103
BMS150H8-Z
103
19.3
37.3
19.3
37.3
20.5
36.8
28.2
54.0
28.2
54.0
30.3
56.1
35.3
69.4
19.3
37.3
19.3
37.3
20.5
36.8
28.2
54.0
33.0
66.5
33.0
66.5
36.7
71.0
18.4
35.6
18.4
35.6
19.9
35.7
25.1
49.4
29.9
61.7
29.9
61.7
33.6
66.3
16.4
34.1
16.4
34.1
17.0
34.9
17.0
34.9
21.4
46.4
22.4
47.4
27.5
60.7
14.9
28.6
15.6
29.4
17.5
31.6
18.3
34.6
21.8
38.9
23.0
40.1
30.9
64.4
30.9
64.4
14.0
27.1
14.0
27.1
16.0
29.3
17.7
33.5
18.7
34.5
19.9
35.7
27.8
59.6
31.5
64.2
Single Compressor UNIT MODEL
RECEIVER
TOTAL UNIT CHARGE R404A (lb)
Copeland
Bitzer
90% Full (lb)
Summer (+10%
receiver)
Winter (+10% receiver)
BMD150L 6/8-A BMD160L 6/8-B 70(2)
38.6
74.5
BMD180L 6/8-A BMD200L 6/8-B 70(2)
38.6
74.5
BMD200L 6/8-A BMD240L 6/8-B 82(2)
41.0
73.6
BMD240L 6/8-A
103(2)
56.4
107.9
BMD260L 6/8-A BMD260L 6/8-B 103(2)
56.4
107.9
BMD300L 6/8-A BMD300L 6/8-B 124(2)
60.6
112.1
BMD440L 6/8-A BMD400L 6/8-B 124(2)
70.6
138.7
BMD150M8-A BMD120M8-B 70(2)
38.6
74.5
BMD151M8-A BMD150M8-B 70(2)
38.6
74.5
BMD160M8-A BMD180M8-B 82(2)
41.0
73.6
BMD200M8-A BMD200M8-B 103(2)
56.4
107.9
BMD240M8-A BMD240M8-B 124(2)
65.9
132.9
BMD300M8-A BMD300M8-B 124(2)
65.9
132.9
BMD400M8-B 124(2)
73.3
142.0
BMS075H8-A BMD120H8-B 70(2)
36.8
71.2
BMS076H8-A BMD150H8-B 70(2)
36.8
71.2
BMS080H8-A BMD180H8-B 82(2)
39.8
71.4
BMS100H8-A BMD200H8-B 103(2)
50.2
98.8
BMS120H8-A BMD240H8-B 124(2)
59.8
123.3
BMS150H8-A BMD300H8-B 124(2)
59.8
123.3
BMD400H8-B 124(2)
67.2
132.6
BMD120L8-Z
50(2)
32.7
68.2
BMD150L8-Z
50(2)
32.7
68.2
BMD170L8-Z
50(2)
33.9
69.8
BMD200L8-Z
50(2)
33.9
69.8
BMD260L8-Z
60(2)
42.8
92.7
BMD300L8-Z
70(2)
44.8
94.7
BMD340L8-Z
82(2)
55.1
121.4
BMD100M8-Z
50(2)
29.9
57.3
BMD120M8-Z
50(2)
31.1
58.8
BMD121M8-Z
60(2)
35.0
63.1
BMD140M8-Z
60(2)
36.6
69.2
BMD151M8-Z
70(2)
43.6
77.7
BMD170M8-Z
82(2)
46.0
80.1
BMD220M8-Z
103(2)
61.7
128.7
BMD300M8-Z
103(2)
61.7
128.7
BMD100H8-Z
50(2)
28.0
54.1
BMD120H8-Z
50(2)
28.0
54.1
BMD121H8-Z
60(2)
32.0
58.5
BMD140H8-Z
60(2)
35.4
67.0
BMD151H8-Z
70(2)
37.4
69.0
BMD170H8-Z
82(2)
39.8
71.4
BMD220H8-Z
103(2)
55.6
119.1
BMD300H8-Z
103(2)
63.0
128.4
NOTE ON ALTERNATE REFRIGERANTS: PUBLISHED RECEIVER CAPACITY IS BASED ON R404A
ON MODELS USING “8” AS REFRIGERANT CODE. FOR ALTERNATE
REFRIGERANTS, MULTIPLY R404A VALUE BY THE APPROPRIATE VALUE BELOW:
R407A
1.10
R407C R448A R507
1.10
1.05 1.00
– For R449A, use R448A data.
R22 1.15
B50-BCU-IM-20
– 18 –
20/04/22
REFRIGERANT CHARGING (cont’d)
LARGE AIR-COOLED CONDENSING UNIT (WITH VERTICAL AIRFLOW CONDENSERS)
Refrigerant Operating Charges (Lbs) (Less Evaporator And Liquid Lines)
Single Compressor UNIT MODEL
RECEIVER
TOTAL UNIT CHARGE R404A (lb)
Copeland
Bitzer
90% Full (lb)
Summer (+10%
receiver)
Winter (+10% receiver)
BVS010L 6/8-A BVS012L 6/8-B
70
BVS015L 6/8-A BVS015L 6/8-B
82
BVS022L 6/8-A BVS020L 6/8-B 103
BVS027L 6/8-A BVS025L 6/8-B 124
BVS030L 6/8-A BVS030L 6/8-B 124
BVS040L 6/8-A BVS040L 6/8-B 157
BVS015M8-A BVS015M8-B
103
BVS020M8-A BVS020M8-B
103
BVS022M8-A
103
BVS025M8-A BVS025M8-B
124
BVS030M8-A BVS030M8-B
157
BVS035M8-A BVS035M8-B
189
BVS040M8-A BVS040M8-B
189
BVS050M8-A BVS050M8-B
254
BVS015H8-A BVS015H8-B
103
BVS022H8-A BVS020H8-B
103
BVS025H8-A BVS025H8-B
124
BVS030H8-A BVS030H8-B
157
BVS035H8-A BVS035H8-B
189
BVS040H8-A BVS040H8-B
189
BVS011L 6/8-A BVS013L 6/8-B
82
BVS016L 6/8-A BVS016L 6/8-B 103
BVS023L 6/8-A BVS021L 6/8-B 124
BVS028L 6/8-A BVS026L 6/8-B 157
BVS031L 6/8-A BVS031L 6/8-B 157
BVS041L 6/8-A BVS041L 6/8-B 189
BVS016M8-A BVS016M8-B
124
BVS021M8-A BVS021M8-B
124
BVS023M8-A
124
BVS026M8-A BVS026M8-B
157
BVS031M8-A BVS031M8-B
189
BVS036M8-A BVS036M8-B
254
BVS041M8-A BVS041M8-B
254
BVS051M8-A BVS051M8-B
254
BVS016H8-A BVS016H8-B
124
BVS021H8-A BVS021H8-B
124
BVS026H8-A BVS026H8-B
157
BVS031H8-A BVS031H8-B
189
BVS036H8-A BVS036H8-B
254
BVS041H8-A BVS041H8-B
254
BVS051H8-A BVS051H8-B
254
BVS008V6-B
70
BVS012V6-B
82
BVS016V6-B
82
BVS020V6-B
124
BVS025V6-B
124
BVS030V6-B
124
19.0 23.8 27.9 37.7 37.7 46.1 25.5 32.9 35.6 37.7 43.8 50.9 58.1 64.6 23.6
32.3 34.4 40.5 47.6 56.5
21.9 29.1 33.6 43.8 43.8 51.3 31.2 37.8 40.5 45.8
53.9
78.7 93.0 93.0 31.7 37.2 42.6 50.7 77.8 91.5 91.5 19.0 23.8 23.8 33.6 33.6
36.4
34.6 44.8 47.9 68.6 68.6 85.1 45.0 63.0 66.5 68.6 82.3 95.1 116.3 122.8 42.1
61.5 63.6 77.2 89.9 112.8
42.2 58.4 63.4 82.3 82.3 95.8 60.5 75.4 79.0 89.8
111.4
181.2 228.9 228.9 60.2 73.9 84.5 105.6 177.5 223.6 223.6 34.2 44.0 44.0 62.5
62.5 72.8
Double Compressor UNIT MODEL
RECEIVER
TOTAL UNIT CHARGE R404A (lb)
Copeland
Bitzer
90% Full (lb)
Summer (+10%
receiver)
Winter (+10% receiver)
BVD020L 6/8-A BVD024L 6/8-B BVD030L 6/8-A BVD030L 6/8-B BVD044L 6/8-A BVD040L
6/8-B BVD054L 6/8-A BVD050L 6/8-B BVD060L 6/8-A BVD060L 6/8-B BVD080L 6/8-A
BVD080L 6/8-B BVD030M8-A BVD030M8-B BVD040M8-A BVD040M8-B BVD044M8-A
BVD050M8-A BVD050M8-B BVD060M8-A BVD060M8-B BVD070M8-A BVD070M8-B BVD080M8-A
BVD080M8-B BVD100M8-A BVD100M8-B BVD030H8-A BVD030H8-B BVD044H8-A BVD040H8-B
BVD050H8-A BVD050H8-B BVD060H8-A BVD060H8-B BVD070H8-A BVD070H8-B BVD080H8-A
BVD080H8-B
BVD021L 6/8-A BVD025L 6/8-B BVD031L 6/8-A BVD031L 6/8-B BVD045L 6/8-A BVD041L
6/8-B BVD055L 6/8-A BVD051L 6/8-B BVD061L 6/8-A BVD061L 6/8-B BVD081L 6/8-A
BVD081L 6/8-B BVD031M8-A BVD031M8-B BVD041M8-A BVD041M8-B BVD045M8-A
BVD051M8-A BVD051M8-B
BVD061M8-A BVD061M8-B
BVD071M8-A BVD071M8-B BVD081M8-A BVD081M8-B BVD101M8-A BVD101M8-B BVD031H8-A
BVD031H8-B BVD041H8-A BVD041H8-B BVD051H8-A BVD051H8-B BVD061H8-A BVD061H8-B
BVD071H8-A BVD071H8-B BVD081H8-A BVD081H8-B BVD101H8-A BVD101H8-B
BVD016V 6/8-B BVD024V 6/8-B BVD032V 6/8-B BVD040V 6/8-B BVD050V 6/8-B BVD060V
6/8-B
70(2) 82(2) 103(2) 124(2) 124(2) 157(2) 103(2) 103(2) 103(2) 124(2) 157(2)
189(2) 189(2) 254(2) 103(2) 103(2) 124(2) 157(2) 189(2) 189(2)
82(2) 103(2) 124(2) 157(2) 157(2) 189(2) 124(2) 124(2) 124(2) 157(2)
189(2)
254(2) 254(2) 254(2) 124(2) 124(2) 157(2) 189(2) 254(2) 254(2) 254(2) 70(2)
82(2) 82(2) 124(2) 124(2) 124(2)
38.1 47.7 55.7 75.4 75.4 92.2 51.0 65.8 71.2 75.4 87.6 101.8 116.2 129.2 47.2
64.7 68.9 81.1 95.3 113.1
43.9 58.2 67.1 87.6 87.6 102.7 62.4 75.6 81.0 91.7
107.9
157.4 186.1 186.1 63.3 74.5 85.2 101.4 155.5 183.0 183.0 38.1 47.7 47.7 67.1
67.1 72.7
69.3 89.5 95.8 137.2 137.2 170.2 89.9 125.9 133.0 137.2 164.6 190.3 232.6
245.6 84.2 122.9 127.1 154.4 179.9 225.6
84.5 116.7 126.8 164.6 164.6 191.6 120.9 150.9 158.0 179.6
222.7
362.3 457.8 457.8 120.3 147.8 169.0 211.3 355.0 447.2 447.2 68.5 88.0 88.0
125.0 125.0 145.7
NOTE ON ALTERNATE REFRIGERANTS: PUBLISHED RECEIVER CAPACITY IS BASED ON R404A
ON MODELS USING “8” AS REFRIGERANT CODE. FOR ALTERNATE REFRIGERANTS, MULTIPLY
R404A VALUE
BY THE APPROPRIATE VALUE AT RIGHT:
R407A
1.10
R407C R448A R507
1.10
1.05 1.00
– For R449A, use R448A data.
R22 1.15
B50-BCU-IM-20
– 19 –
20/04/22
WEIGHT OF REFRIGERANT
Weight of Refrigerant in Copper Tubing (Lbs)
Pipe O.D. Cubic ft.
in
per
inches 100 ft.
3/8 1/2 5/8 7/8 1- 1/8 1- 3/8 1- 5/8 2- 1/8 2- 5/8 3- 1/8 3- 5/8 4- 1/8 5-1/8 6-1/8
0.054 0.101 0.162 0.336 0.573 0.873 1.235 2.149 3.314 4.731 6.398 8.317 12.98 18.63
R404A
L
V
65.51 3.94
3.5
0.2
6.6
0.4
10.6
0.6
22.0
1.3
37.5
2.3
57.2
3.4
80.9
4.9
140.8
8.5
217.1 13.1
309.9 18.6
419.1 25.2
544.8 32.8
850.3 51.1
1220 73.4
Note: – L = Liquid, V = Vapor – For R507 use R404A – For 449A use R448A.
R407A
R407C
R448A
R22
Lbs per 100 feet of type L tubing – Weight at 75°F/28.89°C
L
V
L
V
L
V
L
V
71.8
3
71.31 2.64
68.5
2.93
74.6
2.68
3.9
0.2
3.9
0.1
3.7
0.2
4.0
0.1
7.3
0.3
7.2
0.3
6.9
0.3
7.5
0.3
11.6
0.5
11.6
0.4
11.1
0.5
12.1
0.4
24.1
1.0
24.0
0.9
23.0
1.0
25.1
0.9
41.1
1.7
40.9
1.5
39.3
1.7
42.7
1.5
62.7
2.6
62.3
2.3
59.8
2.6
65.1
2.3
88.7
3.7
88.1
3.3
84.6
3.6
92.1
3.3
154.3
6.4
153.2
5.7
147.2
6.3
160.3
5.8
237.9
9.9
236.3
8.7
227.0
9.7
247.2
8.9
339.7 14.2 337.4 12.5 324.1 13.9 352.9 12.7
459.4 19.2 456.2 16.9 438.3 18.7 477.3 17.1
597.2 25.0 593.1 22.0 569.7 24.4 620.4 22.3
932.0 38.9 925.6 34.3 889.1 38.0 968.3 34.8
1338
55.9
1329
49.2
1276
54.6
1390
49.9
R134a
L
V
75.59 1.95
4.1
0.1
7.6
0.2
12.2
0.3
25.4
0.7
43.3
1.1
66.0
1.7
93.4
2.4
162.4
4.2
250.5
6.5
357.6
9.2
483.6 12.5
628.7 16.2
981.2 25.3
1408 36.3
B50-BCU-IM-20
– 20 –
20/04/22
COMPRESSOR OILS
Copeland Compressors
REFRIGERANT
HCFC R401A HCFC R-401B HCFC R-402A HCFC R-402 HCFC R-408A HCFC R-409A
LUBRICANT CHOICES
PREFERRED *
ALTERNATE 1 ALTERNATE 2
AB & MIN
POE-32 & MIN
POE-32
HFC R134a
HFC R404A
HFC R507
HFC R407A
POE-32
n/a
n/a
HFC R407C
HFC R448A
HFC R-407F
- LEGEND:
MIN: Mineral Oil (Copeland® 46BWMO, Sonneborn Suniso 3GS), Chevron/Texaco Capella WF32 )
Mineral oils are interchangeable for `top off’ purpose
AB:
Alkyl Benzene Oil (Copeland® Ultra 200, Shrieve Zerol 200 TD, Sonneborn Suniso AKB200A,
Shell 2212)
POE 32: Polyolester Oil (Copeland® Ultra 32-3MAF, National NL PE32-3MAF, Lubrizol Emkarate RL32-3MAF,
Parker EMKARATE, RL32-3MAF/ (Virginia) LE323MAF, Nu Calgon 4314-66 (EMKARATE RL32-3MAF)
Spectronics AR-GLO 4/E Fluorescent Leak Detection Dye is approved for HFC/POE and HCFC/Mineral Oil
usage at the manufacturer’s recommended concentrations
Bitzer Semi-Hermetic Reciprocating Compressors: 2KC-05.2(Y) to 6F-50.2(Y)
Lubricant Type
(H)CFC R22
Interim Blends R-401A, R-401B, R-402A,
R-408A, R-409A, (MP-39, MP-66, HP-80, FX-10, FX56)
HFC’s R134a R404A R507 R407C R407A R448A
ICI (Virgina KMP) Emkarate RL32S
A*
P
Polyol Ester
Mobil EAL Arctic 32
A*
P
Castrol Icematic SW32
A*
P
Suniso 3GS
A
Suniso 4GS
A
Mineral Oils
Capella Oil WF32
A
Not Acceptable
Capella Oil WF68
A
Esso Zerice R68
A
Zerol 150
P
Zerol 300
P
Alkyl Benzene
Icematic 2284
P
Not Acceptable
Esso Zerice S46
P
Esso Zerice S68
P
A/B M/O Mix
Shell Clavus SD 2212 Esso Zerice R46
P Not Acceptable
A
B50-BCU-IM-20
Legend: P = Preferred
A= Acceptable Alternative
– Compressor with “Y” designation are factory charged with polyolester oil *
NOTE: When operating (H)CFC with ester oils the quantity of refrigerant
dissolved in the oil is more than doubled as compared with conventional
lubricants. Special care should be taken. Refer to Bitzer Technical Bulletin
KT-510-2, section 5 for additional information.
– 21 –
20/04/22
WATER-COOLED CONDENSERS
WARNING
All water and drain connections to the unit must be made in accordance with
national as well as local plumbing codes and by-laws.
All water-cooled condensers require a water regulating
valve that must be installed upstream of the condenser.
The water-regulating valve is adjustable and is set
to provide the desired condensing pressure. As the
condensing pressure rises, the valve will open and allow more water to flow.
As the condensing pressure lowers, the valve will start to close to reduce the
amount of water flow into the condenser. Typical condensing temperatures
normally range between 90 to 110 °F. The actual water inlet temperature and
water supply flow capacity available at the site determines the suitable
condensing temperature. Lower inlet water temperatures
(40°F to 70 °F) allow the condensing unit to run at a lower
condensing temperature (70°F to 90°F). Higher water
inlet temperatures (above 85°F) require the condensing
temperature to be higher (105° to 120°F). The capacity of
the water-cooled condensing unit varies with condensing temperature. Refer to
the water flow rate chart in the Product Data and Specifications brochure that
comes with the condensing unit to estimate the required flow rate in GPM. If
water supply pressure is excessive, a pressure-
reducing valve must be used since the allowable working
pressure of water valves and condensers is normally 150
psig (1136 kPa).
Care should be exercised in locating the condensing unit so that the condenser
will never be exposed to temperatures below freezing.
Excessive water velocities or cavitation on the waterside of the condenser
tubes may damage a water-cooled condenser. In order to prevent operating
difficulties, care should be taken to follow the instructions outlined below:
(a) Water velocities through the condenser should not exceed 7 fps (2.13 m/s).
Higher velocities can result in “impingement corrosion”. In order to maintain
water velocities at an acceptable level, parallel circuiting of the condenser
may be necessary when high water flow is required. (b) If a water-circulating
pump is used, it should be installed so that the condenser is fed from the
discharge side of the pump. (c) If the condenser is installed more than 5 ft
(1.52 m) higher than the outlet drain point of the condenser, a vacuum breaker
or open vent line should be provided to prevent the outlet line from creating
a partial vacuum condition.
RECOMMENDED OPTIONS
Low Temperature Systems (-10°F Freezers) · Suction Accumulator with Heat
Exchanger · Oil Separator · Suction Filter
Medium Temperature Systems (+35°F Coolers) · Suction Accumulator with Heat
Exchanger · Oil Separator · Suction Filter
Long Piping Runs (>100-150 ft) · Suction Accumulator with Heat Exchanger ·
Oil Separator · Oversized Receiver · Liquid / Suction Heat Exchanger ·
Suction Filter
Capacity Control (Expected Periods of Low Load / Oversized Equipment to Daily
Load Requirements / Tight Temperature Control)
· Hot Gas Bypass to Evaporator (for use with 1 evaporator) Add Aux Sideport
Connector to evaporator (required) HG Bypass to Evaporator Kit (required)
· Hot Gas Bypass to Suction (for use with multiple evaporators or where bypass
to evaporator is not accessible/realistic) Add Suction Accumulator (required)
HG Bypass to Suction Line Kit (required)
- Highly recommended
B50-BCU-IM-20
– 22 –
20/04/22
AVAILABLE OPTIONS & OPTION INFORMATION
HOT GAS BYPASS
Purpose: To maintain a constant evaporating pressure during periods of low
load either to prevent coil icing or to avoid operating the condensing unit at
a lower suction pressure than it was designed to operate. Application: Hot gas
bypass is a method of compressor capacity control that eliminates the on-off
control of the compressor allowing for greater control of temperature,
humidity and load matching. Common uses are in wine rooms, fur storage and
biotech; anywhere critical temperature and or humidity applications exist. How
it Works: The discharge bypass valve is located in a branch line off the
discharge line close to the compressor. The bypassed hot gas can enter the low
side at the inlet of the evaporator or at the suction line. The hot gas bypass
valve is adjustable to maintain the desired evaporating or suction pressure.
Maintaining a constant evaporating pressure regulated by the modulating hot
gas will allow for a constant coil temperature resulting in a constant room
temperature regardless of room load.
Bypass to Inlet of the evaporator is the preferred method because the TXV will
provide the correct amount of liquid refrigerant for desuperheating. In
addition, the evaporator allows for proper mixing of liquid and hot gas
ensuring dry super-heated refrigerant returns to the compressor.
Bypass to the suction line is used with long line runs and with multiple
evaporators. The addition of a specific desuperheating TXV is required to
prevent overloading (overheating) of the compressor due to high return gas
temperatures caused by bypassed hot gas close to the compressor. A suction
accumulator is also recommended, as this will ensure proper mixing of the hot
gas and liquid refrigerant prior to it reaching the compressor.
CRANKCASE PRESSURE REGULATOR (CPR)
Purpose: Prevents overloading of the compressor motor by limiting the suction
pressure at the compressor during normal operation, during or after defrost,
or after a lengthy shutdown period. Application: Required on any application
where the potential for the compressor running at a suction temperature or
pressure higher than what is allowed by the compressor manufacturer (i.e.
running the compressor outside its operating envelope) for an extended period
of time. This can be seen on low temperature systems using hot gas defrost.
High suction pressure and temperatures will overload the compressor motor
causing the internal motor overload to open, stopping the compressor until it
cools down. How it works A crankcase pressure regulator is a valve that closes
on a rise of outlet pressure. The valve set point is the corresponding
pressure of the maximum saturated suction
temperature the compressor manufacturer allows for the specific compressor. If
the suction pressure upstream of the valve exceeds the set point, it begins to
close modulating and maintaining a constant pressure for the compressor.
Please note that the use of a CPR valve introduces a large pressure drop in
the suction line. Even under normal operating conditions a full 2°F drop may
occur across the valve; reducing the refrigeration system capacity. A CPR
valve set point lower than the maximum saturated suction temperature will
prolong the pull-down period after a defrost has completed.
HEATED AND INSULATED RECEIVER
Purpose: Heated and Insulated Receivers are used to maintain a minimum
receiver pressure. Application: Applicable for outdoor units where mild to low
ambient temperatures combined with extended off cycles (low product load) are
experienced. How it works: Heated and insulated receivers help maintain a
higher pressure that would normally correspond to the cold ambient/low
pressure in the receiver. Without a heated and insulated receiver the pressure
in the receiver would drop to the corresponding ambient temperature during off
cycles (low product load conditions) upon a call for cooling the receiver
pressure will be too low to feed the expansion valve. This would result in
short cycling on the low pressure switch which could eventually lead to oil
loss and compressor damage.
REPLACEABLE SUCTION FILTER
Purpose: To pick up and remove system contaminants such as metal particles,
rust, oxides, dirt, and any other solid contaminants. The suction filter
protects compressors from materials becoming imbedded in the motor windings
where the natural flexing of windings during start up can cause particles to
scrape the motor insulation and result in motor burnout. Also used with
desiccant cores (filter-drier) to collect and remove acid, moisture and
sludge.
Application: Required for field built up systems where cutting and/or brazing
of lines occurs or additionally any system where contamination could or could
have occurred.
Desiccant core suction filter-driers can be used to clean the system (removing
corrosive acids) after mild hermetic motor burnouts. Filter-driers are also
used to remove system moisture as system moisture could freeze TX valves and
ultimately lead to liquid flood back and compressor damage.
B50-BCU-IM-20
– 23 –
20/04/22
AVAILABLE OPTIONS & OPTION INFORMATION (cont’d)
REPLACEABLE SUCTION FILTER (cont’d)
How it works: The suction filter (filter-drier) is simply a shell with pleated
or felt element used to collect contaminants. The suction filter is installed
in the suction line and the filter core itself can be of sealed type or
replaceable type where it can be removed and have a replaceable core. The core
itself can be combined with or made out of a desiccant material for moisture
removal.
REPLACEABLE LIQUID FILTER/DRIER
Same application as suction line filter/drier but installed in the liquid
line. See Replaceable Suction Filter.
SUCTION ACCUMULATOR w/ HEAT EXCHANGER
Purpose: To prevent liquid refrigerant from flooding back to the compressor as
liquid flood back can result in liquid slugging, loss of oil from the
crankcase or bearing washout. Note: liquid flood back is considered one of the
major causes of compressor failure.
The addition of a heat exchanger raises the temperature of the return gas in
the suction line and lowers the temperature of the refrigerant in the liquid
line. This prevents the formation of flash gas in the liquid line, provides
additional superheat to the suction gas helping to prevent liquid refrigerant
from flooding back to the compressor and increasing system capacity.
Application: Suction accumulators are used for any instances were liquid flood
back could occur. Commonly used in low temperature systems where flood back is
an increased issue. How it works: Suction accumulators are installed in the
suction line close to the compressor. The accumulator is vertical container
with top inlet and outlet connections. An internal U-tube connected only to
the outlet reaches down near the bottom of the container and draws refrigerant
in from the top. This allows the accumulator to almost completely fill with
liquid refrigerant before flood back can occur. A small diameter hole is
drilled in the U-tube near the lowest point. This small hole allows for
controlled metering of liquid refrigerant or oil back to the compressor by a
siphoning action.
ADJUSTABLE FLOODED HEAD PRESSURE CONTROL
condenser reducing condenser area, which in turn increases condensing
pressure. At the same time hot discharge gas can be bypassed around the
condenser by means of the ORD (open on rise of differential) raising the
liquid pressure in the receiver allowing the system to operate properly. The
ORI (Open on Rise of Inlet pressure) is adjustable; its set point will
maintain the condensing pressure in low ambient conditions. The ORD opens when
the pressure drop between the inlet of the condenser and the outlet of the ORI
exceeds approximately 20 PSI. The function of the ORD is to maintain receiver
pressure to allow for adequate differential pressure across the TXV for proper
operation of the TXV.
DISCHARGE LINE CHECK VALVE
Purpose: To prevent the migration of liquid refrigerant from the condenser
back to the compressor during the off cycle. Application: During long off
cycle periods and combined with cold ambient temperatures, liquid refrigerant
in the condenser may migrate to the compressor. The compressor may not be able
to overcome the initial static head if liquid refrigerant is in the discharge
line or worse if backed up right to the discharge valves. The valves in the
head of the compressor may also leak the liquid into the crankcase causing a
flooded start when the compressor eventually starts up. When the scroll
compressor stops, high and low side equalize within the compressor. The
discharge check valve will maintain the high/low side differential pressure
during the compressor off cycle. How it Works: A check valve allows flow in
one direction only. A discharge check valve will allow refrigerant to pass
from the compressor to the condenser. It will not allow refrigerant to flow
back through the valve from the condenser to the compressor.
EXTENDED LEG KIT
Purpose: To raise the condensing unit off the ground by 8 inches Application:
Leg kits are required in locations with high snow accumulation, areas common
to flooding etc. Used where a requirement exists to keep the base of the
condensing unit off the ground. This may prevent damage to components within
the cabinet.
Purpose: To maintain the minimum required condensing pressure during periods of low ambient temperatures. Application: Any air cooled condenser exposed to ambient temperatures that fall below 65°F. How it Works: Liquid refrigerant is restricted from leaving the condenser to the receiver. This backs up liquid refrigerant into the
B50-BCU-IM-20
– 24 –
20/04/22
AVAILABLE OPTIONS & OPTION INFORMATION (cont’d)
OIL SEPARATOR W/ OIL RETURN SOLENOID
DISCONNECT SWITCH
Purpose: Oil Separators are used to return oil to the compressor. Application:
Used on refrigeration systems where it’s difficult to return oil to the
compressor. Commonly used in low temperature systems where oil return is an
increased issue. How it Works: Oil separators are installed in the
compressor(s) discharge line. They are usually a vertical container with the
discharge gas connections at the top and an oil return port at the bottom.
Internal to the oil separator is a form of baffles (usually screen meshing)
which removes oil by a means of velocity reduction. Most of the oil is removed
from the refrigerant and returned to the compressor by means of a ball float
valve
PUMP DOWN TOGGLE SWITCH
Purpose: To externally disconnect power to the system/unit Application: A
disconnect switch is used such power can easily be accessed and removed from
the unit. How it Works: Disconnect switch is available with and without fusing
and is a manual throw switch.
CONTROL CIRCUIT TRANSFORMER
Purpose: Control circuit transformers are used to convert the unit supply
voltage to a lesser voltage for use in the control circuit. Application: Used
when supply voltage is large and a lower voltage is required or to allow for
smaller electrical components.
Purpose: The purpose of the pump down cycle toggle switch is to force a pump
down state. A pump down state prevents liquid migration to the compressor
during off cycles which can lead to compressor oil loss and flooded starts.
Application: Installed in systems where user controlled off cycles are used,
common, or frequent. How it Works: The pump down switch is installed in series
with the thermostat. When the pump down switch is thrown the power to the
liquid line solenoid valve is lost and the solenoid goes into its powerless
state of normally closed. With the liquid line solenoid valve closed the
refrigerant flow to the evaporator is stopped and the compressor continues to
run pumping refrigerant into the condenser and receiver until the low pressure
control cuts out and the compressor contactor opens (stopping the compressor).
The system will stay in a state of pump down that is the compressor running as
required to pump down any refrigerant that might leak through the closed
solenoid valve until the pump down switch is switched back.
PHASE/VOLTAGE MONITOR
COMPRESSOR CIRCUIT BREAKER
Purpose: To disconnect power and provide branch circuit protection to the
compressor Application: A compressor circuit breaker is used to provide branch
circuit protection disconnect power from the compressor.
GOLD COAT FINS
Purpose: To protect the aluminum fins from corrosion in specific environmental
applications. Application: Any aluminum fin coil exposed to a sodium rich
environment such as fish coolers & freezers and salt water coast lines. How it
Works: This is an aluminum fin that has a gold coloured coating applied at the
aluminum manufactures facility. The micro thin coating is adhered to the
aluminum fin protecting the aluminum from corrosion and material degradation
from airborne contaminants that accumulate on the coil surface during the
units operating cycle.
Purpose: Used to protect the compressor from voltage and/or phase imbalances. Application: Installed in areas where phase and voltage fluctuation is common or could occur. How it Works: Phase voltage monitor is installed to sense voltage and phase imbalance across the compressor contactor. Disconnects the power supplied to the compressor upon voltage and/or phase imbalance. Has a built in field adjustable restart delay (normally factory preset to 2 seconds).
HERESITE COATING
Purpose: To protect from exposure to corrosive atmospheres with the exception
of strong alkalies, strong oxidizers and wet bromine, chlorine and fluorine in
concentrations greater than 100 ppm Application: For both fins and units in
corrosive atmospheres How it Works: This is a Heresite baked phenolic compound
coating and is offered as a service to the customer. As standard the Heresite
coating is applied to the coil and manifold only for additional protection.
B50-BCU-IM-20
– 25 –
20/04/22
AVAILABLE OPTIONS & OPTION INFORMATION (cont’d)
A419 ELECTRONIC THERMOSTAT
EC MOTORS (Electronically Commutating Motors)
Purpose: To provide users with an easy to read, easy to access, and single
point reliable solid-state control thermostat. Application: The digital
thermostat can be used where a thermostat is required separate of the
evaporator(s). It is often used in circumstances having multiple evaporators
in order to provide single point control from an easy to access location that
can be either inside or outside the space. The digital thermostat with LCD
display is used to more accurately set, read and control system temperatures
and offers a tighter range differential. How it Works: This is a single stage,
electronic temperature control with a single pole double throw output relay.
Has LCD display with adjustable set point, differential and adjustable anti-
short cycle delay. A419 is available in 120/240 VAC. Is wired in series with
the liquid line solenoid valve(s) such that upon satisfying the cooling load
the thermostat cuts out (de-energizing/closing the liquid solenoid valve) and
pumping down the system. The electronic thermostat also offers a tighter range
of control as the differential setting can be as low as 1°F (standard
mechanical Saginomiya thermosat has a minimum differential of 3.6°F).
ELECTRONIC THERMOSTAT
Purpose: To provide users with an easy to read, easy to access, and single
point reliable solid-state control thermostat. Application: The digital
thermostat can be used where a thermostat is required separate of the
evaporator(s). It is often used in circumstances having multiple evaporators
in order to provide single point control from an easy to access location that
can be either inside or outside the space. The digital thermostat with LCD
display is used to more accurately set, read and control system temperatures
and offers a tighter range differential. How it Works: This is a single stage,
electronic temperature control with a single pole double throw output relay.
Has LCD display with adjustable set point, differential and adjustable anti-
short cycle delay. Most electronic thermostats are available in 120/240 VAC.
Is wired in series with the liquid line solenoid valve(s) such that upon
satisfying the cooling load the thermostat cuts out (de-energizing/closing the
liquid solenoid valve) and pumping down the system. The electronic thermostat
also offers a tighter range of control as the differential setting can be as
low as 1°F.
Purpose: To comply with regional regulatory code as well as provide increased
energy efficiency and decreased operational costs Application: EC Motors are
required in most regions by local codes and regulations. Used to provide
increased energy efficiency and as such lower operating cost (compared to
Shaded Pole or PSC motors). How it Works: An EC motor is made up of two
components, the motor and the motor control module. Input AC voltage is
supplied and converted to DC voltage by the motor control module. This DC
voltage is used in the brushless operation of the motor. The motor controller
energizes the motor phases at the appropriate time for optimum operation and
speed. The motor controller can be programmed to provide specific speed based
on a 0-10V input signal. Note: our standard EC evaporator motors are set up
for 1 speed or 2 speed operation with SmartSpeed. EC motors due to brushless
commutation and internal controller are significantly more efficient then
standard motors. Installed PSC motor efficiencies are typically in the range
of 12-45% whereas EC motors maintain an efficiency of 65-72% at all speeds. In
addition to EC motor efficiency; these motors operate at low temperatures
requiring less energy to offset motor heat gain in the refrigeration system.
FOR DETAILS ON EC MOTOR APPLICATION REFER TO EC MOTOR APPLICATION GUIDE
COMPRESSOR TIME DELAY (Delay on Break)
Purpose: To provide a specified amount of time for the compressor to remain
off after pump down and prevent short cycling. Application: Installed on
condensing units to prevent short cycling and protect the compressor. (Factory
setting 3-minutes) How It Works: Immediately upon application of power, the
Delay on Break timer enables circuit operation. Once power is interrupted, the
circuit opens for the time set on the dial. After the time period elapses, the
circuit closes, allowing the protected motor or compressor to start.
B50-BCU-IM-20
– 26 –
20/04/22
LEAK TESTING
IMPORTANT: All system piping, including the condensing unit and accessories
should be thoroughly tested for leaks prior to start up and charging. The
system should be initially pressurized to a maximum of 150 psig (1136 kPa)
with dry nitrogen to ensure that the system is free of major leaks. With the
system free of major leaks, a more detailed leak check should be performed.
Discharge the initial dry nitrogen charge and add enough refrigerant to raise
the system pressure up to 10 psig (170 kPa) (tracer amount). Add dry nitrogen
to increase the system pressure to a maximum of 150 psig (1136 kPa). It is
recommended that an electronic leak detector be used when checking for leaks
because of its greater sensitivity to small leaks. As a further check it is
recommended that this pressure be held for a minimum of 12 hours and then
rechecked. The system must be leak free for satisfactory operation.
WARNING
HFC-134a has been shown to be combustible at pressures as low as 5.5 psig (140
kPa) at 350 °F (176.7 °C) when mixed with air at concentrations more than 60%
air by volume. At lower temperature, higher pressures are required to support
combustion. Therefore, air should never be mixed with HFC-134a for leak
detection.
IMPORTANT ENVIRONMENTAL NOTE
When conventional leak detection methods are employed using HCFC or CFC tracer
gas, all of the tracer gas must be reclaimed and disposed of in a proper
manner.
EVACUATION AND DEHYDRATION
When the system is completely free of refrigerant leaks, an evacuation of the
entire system should be completed by using a “high vacuum” pump. This
evacuation, if completed correctly, will ensure long life for the system as
well as elimination of moisture and non-condensable gas problems. Moisture
problems causing compressor failure will void warranty. Follow the recommended
procedure carefully.
CAU T I ON
Do not use the refrigeration compressor to evacuate the system. Never start
the compressor or perform a megger insulation test while the system is in a
vacuum.
DEHYDRATION PROCEDURE
1. Use larger size (3/8 or 1/2) hoses or copper lines. 2. Perform oil change
on vacuum pump at the beginning of each evacuation 3. Always check vacuum
pump, manifold, and hose assembly that it will pull below 250 microns. 4.
Evacuate system from 4 access points (if available) on the system. These
points are: (Refer to piping schematic below)
i. Liquid receiver service valve (VL1) ii. Compressor Suction service valve
(VL2) iii. Compressor Discharge service valve (VL3) iv. ¼ fitting on Discharge
line before the condenser (VL4) 5. Ensure that all solenoids in the system are
open (energized) during evacuation. 6. Ensure that all ball valves in the
system are open and all service valves are appropriately cracked or back-
seated during evacuation. 7. Perform “Deep Vacuum Method”.
B50-BCU-IM-20
– 27 –
20/04/22
DEHYDRATION PROCEDURE (cont’d)
Deep Vacuum Method: 1. Ensure that the vacuum pump used is capable of pulling
a 250 micron vacuum. 2. Connect hoses to the appropriate locations on the
system and other ends to the manifold. Then connect the manifold
to the vacuum pump. 3. Connect an electronic vacuum gauge at a point on the
system furthest away from the vacuum pump. 4. Turn on the vacuum pump and
proceed with opening the high and low side valves on the gauge manifold first
then
proceed with opening the shut off valves or service valves which gives access
to the system. 5. Evacuate until the vacuum gauge reads 500 microns or less.
6. Close the valves to the vacuum pump and shut pump off. Wait 30 minutes. 7.
If the vacuum gauge reads below 1000 microns the system can be considered dry
and leak free and can proceed with
refrigerant charging. 8. If the vacuum gauge reads between 1000-2000 microns
then some moisture is still present.
Sweep with Nitrogen and repeat steps 47.
Refer to graph below as a guideline when using the Deep Vacuum Method.
B50-BCU-IM-20
Microns
5000
4500
4000
3500 3000
Leak in System
2500
2000
50 ppm H 0 Vacuum tight too wet 2
1500
1000
< 10 ppm H 0 Tight dry system 2
500
0
0
1
2
3
4
5
6
7
Time – Hours
– 28 –
20/04/22
SYSTEM START-UP CHECK LIST
I M PORTAN T START-U P N OT E
Only a qualified refrigeration mechanic who is familiar with compressor
performance and the function and adjustment of all controls and components
should start up the compressor. Finishing up work on the installations should
be planned so that a qualified mechanic is on the job for at least the first
full day that the unit is in operation.
Before any refrigeration system is started, the following items should be
checked:
(1) Check that all electrical and refrigeration connections are tight. (2)
Check compressor crankcase oil level (if equipped with sight glass). It should
be from 1/8 to 1/2 full in the sight
glass. (3) Insure that compressor shipping spacers (spring mounted
compressors) or hold down nut (solid mounted
compressors) are properly in place. (4) Check that the compressor discharge
and suction shut-off valves are open. (5) Ensure that the high and low
pressure controls pressure regulating valves, oil pressure safety controls,
Compressor Time Delay and any other safety controls are adjusted properly. (6)
Check that the room thermostat is set for normal operation and adjust if
required. (7) Check all motors, fans and pump bearings in the condenser and
evaporator. If they are the type that require
oil or grease, make sure that this is attended to in accordance with the tag,
which will be attached. Fan blades and pumps should be checked for correct
rotation, tightness and alignment. Air should draw air through the condenser
(air cooled condensing unit models). (8) Electric and hot gas evaporator fan
motors should be temporarily wired for continuous operation until the room
temperature has stabilized. (9) Observe the system pressures during the
charging and initial operation process. DO NOT add oil while the system is low
on refrigerant charge unless the oil level is dangerously low. (10) Continue
to charge the system until it has enough charge for proper operation. DO NOT
OVERCHARGE THE SYSTEM. Note that bubbles in the sight glass may not
necessarily mean a shortage of refrigerant. (11) DO NOT leave the system
unattended until the system has reached its normal operating condition and the
oil charge has properly adjusted itself to maintain the proper level in the
sight glass. (12) Compressor performance, and that of all of the moving
components should be watched carefully throughout the first operating cycle
and then checked periodically during the first day of operation. Careful
attention to details at this time will pay dividends in trouble-free
performance of the entire system. (13) Check that the wiring diagrams,
instructions bulletins etc. are read and attached to the unit for future
reference.
WARNING
Three phase scroll compressors must be checked for correct rotation. During
the initial start up, observe the suction and discharge gauges to ensure the
suction pressure drops and the discharge pressure rises.
B50-BCU-IM-20
– 29 –
20/04/22
PRESSURE CONTROLS
Encapsulated Pressure Switches
Encapsulated pressure switches are commonly installed on many condensing
units. These switches set with fixed set points (non-adjustable) and are auto
reset.
·
High Pressure Switch: R22 Cut-out @ 350 PSIG, Cut-in @ 250 PSIG
R404A/R507/R448A/R407A/R407C Cut-out @ 400 PSIG, Cut-in @ 300 PSIG
Adjustable Pressure Controls
Adjustable Low Pressure Control Settings **
Minimum Temperature
°F *
50 40 30 20 10 0 -10 -20 -30
R134a
Cut-in
(PSIG)
35 25 17 12 7 5 –
Cut-out
(PSIG)
5 5 5 0 0 0 –
R22
Cut-in
(PSIG)
70 55 40 30 20 15 15 10 10
Cut-out
(PSIG)
20 20 20 10 0 0 0 0 0
- The coldest Temperature of either the fixture or outdoor ambient. ** Compressor Time Delay Setting: 3 Minutes
R404A R507
R448A R407A R407C
Cut-in
(PSIG)
85 70 50 40 30 20 15 10 6
Cut-out
(PSIG)
30 30 30 20 10 5 0 0 0
Cut-in
(PSIG)
65 50 35 25 15 10 10 7 7
Cut-out
(PSIG)
20 20 20 5 0 0 0 0 0
Adjustable High Pressure Control Settings
Refrigerant
R134a R22
Maximum Cut-out (PSIG)
Air-Cooled Units
Water Cooled Units
250
200
350
315
R404A R448A R407A R407C
400
315
LOW TEMPERATURE ROOM PULL-DOWN
It can take up to two weeks to properly start-up and pulldown a large freezer. Large freezers should be pull-down to temperature in stages. Too fast a pull- down can cause structural problems in pre-fabricated rooms and will damage (crack) concrete floors. Reduce room temperature by 10 to 15°F (5.6 to 8.4°C) per day. Hold this temperature for 24 to 48 hours at 35°F (1.7 °C) and again at 25°F (-3.9 °C). Monitor the amount of defrost water during this pull down stage.
Once the room is pulled down to temperature, expect frost on the compressor end bell and any exposed suction line. A lack of frost in these areas probably indicates too high of suction superheat. Reduce defrost frequency to 30 minutes every 6 hours if possible. Adjust the defrost termination (and time clock) so that the coil and drain pan are COMPLETELY free of frost / ice at termination. Too short of a defrost cycle will allow residual ice to grow. Too long of a defrost will allow the coil(s) to steam at the end of the cycle. The steam will condense and freeze fans, fan guards and create frosting on the ceiling of the room. The evaporator fan delay must allow any condensate left on the coil surface to refreeze before the fans start.
B50-BCU-IM-20
– 30 –
20/04/22
CHECKING SUPERHEAT
IMPORTANT SYSTEM BALANCING NOTE
To obtain maximum system capacity and insure trouble free operation it is
necessary to check both the compressor and evaporator superheat.
Compressor Superheat
Compressor suction superheat must be checked. To check the superheat at the
compressor the following steps should be followed:
(1) Measure the suction pressure at the suction service valve of the
compressor. Determine the saturated temperature corresponding to this pressure
from a “Pressure- Temperature” chart.
(2) Measure the suction temperature of the suction line about 6 inches (15 cm)
back from the compressor suction valve using an accurate thermometer.
(3) Subtract the saturated temperature (from step 1) from the actual suction
line temperature (from step 2). This difference is the actual superheat at the
compressor.
System capacity decreases as the suction superheat increases. For maximum
system capacity, the suction superheat should be kept as low as is practical.
The superheat at the compressor should range within 20 to 45 °F (11.2 to 25.2
°C) Superheat.
NOTE: Too low of a suction superheat can result in liquid being returned to
the compressor. This can cause dilution of
the oil and eventually cause failure of the bearings and rings through wash
out as well as liquid slugging.
NOTE: Too high of a suction superheat will cause excessive discharge
temperatures which cause a break down of the
oil and will result in piston ring wear, piston and cylinder wall damage.
If adjustment to the suction superheat is required, it should be done either
by adjusting the thermostatic expansion valve at the evaporator, the use of
liquid to suction heat exchanger or suitable use of suction line insulation.
Evaporator Superheat
Once the refrigerated space is at its design temperature or close to design
temperature, the evaporator superheat must be checked. To check the suction
superheat at the evaporator the following steps should be followed:
(1) Measure the suction pressure in the suction line at the bulb location by
either, (a) A gauge in the external equalizer line will indicate the pressure
directly and accurately. (b) A gauge directly in the suction line near the
evaporator or directly in the suction header will suffice.
(2) Measure the temperature of the suction line at the point where the
thermostatic expansion valve bulb is clamped to the suction line.
(3) Convert the pressure obtained in step 1 above to a saturated evaporator
temperature from a “PressureTemperature” chart.
(4) Subtract the saturated temperature (from step 1) from the actual suction
line temperature (from step 2). This difference is the actual superheat at the
evaporator.
The superheat at the evaporator should be a minimum of 6 to 10 °F (3.4 to 5.6
°C) for systems with a 10 °F (5.6 °C) design TD (temperature difference) to a
maximum of 12 to 15 °F (6.7 to 8.4 °C) for systems with a higher operating TD.
Low temperature applications (freezers) should be set at superheats of 4 to 6
°F (2.2 to 3.4 °C).
TD = Box temperature evaporating temperature.
B50-BCU-IM-20
– 31 –
20/04/22
SEQUENCE OF OPERATION
Recycling Pump Down System
Power is generally supplied to the thermostat and liquid line solenoid circuit from the evaporator fan terminals
“4” & “F” (off time defrost) or from the time clock (timed air or electric defrost) terminals “4” and “N”.
The room thermostat switch closes when the temperature rises above the desired set point.
The liquid line solenoid coil is energized causing the valve to open, allowing liquid refrigerant into the evaporator
coil.
The low pressure control closes when the suction pressure rises above the cut- in setting of the control.
The compressor contactor coil is energized causing the contactor to close. The compressor and the condenser
fan closest to the discharge header start at the same time. Additional fans will come on after the discharge
pressure rises above the cut-in set point of the fan cycle control.
Once the thermostat set point has been reached, the thermostat opens and the liquid line solenoid coil is de-
energized. The solenoid valve closes stopping the refrigerant flow to the evaporator.
The compressor continues to run reducing the suction pressure until it drops below the cut-out setting indicated
on the low pressure control. The compressor contactor coil is de-energized, the contactor opens and the
compressor and condenser fan stop running. The Compressor Time Delay opens for the recommended
3-minute setting to prevent short cycling.
The system remains off until the temperature rises above the desired set point again.
Electric Defrost Cycle Using 8145 time clock or equivalent
During refrigeration the “4” terminal on the time clock is powered supplying voltage to the thermostat and
solenoid circuit. It also supplies voltage to the evaporator fans directly or to a contactor coil whose contactor
contacts directly power the evaporator fan motors.
During defrost the “3” terminal on the time clock is powered supplying voltage to the defrost heater circuit.
The defrost cycle starts automatically via the time clock at predetermined times as defined by the installing
contractor by manipulating the pins on the clock face. Three (3) to four (4) defrost cycles are generally sufficient
however variations in loads due to usage and infiltration may require additional adjustments, defrost cycles of
alternative defrost methods
When it’s time for a defrost cycle to start, terminal “4” is de-energized, the liquid line solenoid coil is de-
energized. The solenoid valve closes stopping the refrigerant flow to the evaporator allowing the compressor to
pump down and shut off on the low pressure control. At the same time the evaporator fan motors stop running.
From the time clock terminal “3” is powered, however a normally closed auxiliary contact mounted on the side of
the compressor contactor holds the off the power to the heater circuit until the compressor has finished pumping
down.
Once the compressor contactor opens, the auxiliary switch closes supplying voltage to the defrost heaters
directly or to a contactor coil whose contactor contacts directly power the defrost heaters.
Once powered, the defrost heaters increase the coil temperature melting the frost that had accumulated during
the refrigeration cycle.
A defrost termination thermostat measures the coil temperature. Once the coil reaches 55°F +/-5°F the switch
closes powering the “X” terminal on the evaporator which is field wired to the “X” terminal on the time clock. The
time clock switches back into refrigeration mode, de-energizing terminal “3” and re-energizing terminal “4”.
Assuming the room thermostat is closed, the liquid line solenoid coil is energized causing the valve to open
allowing liquid refrigerant into the evaporator coil. The low pressure control closes when the suction pressure
rises above the cut-in setting of the control. The compressor contactor coil is energized causing the contactor to
close. The compressor and the condenser fan(s) start at the same time.
As the compressor runs the coil temperature will drop, the fan delay thermostat measures the coil temperature.
The contacts of the fan delay thermostat will close completing the evaporator fan motor circuit back to “N” on the
time clock causing the fans to start running again.
The system will now operate in the refrigeration cycle until another defrost period is initiated by the time clock.
B50-BCU-IM-20
– 32 –
20/04/22
SYSTEM OPERATIONAL CHECK LIST
When the system has been running trouble free for an extended time (two weeks
or more) and design conditions are satisfied, the following check list should
be followed:
(1) Check that compressor discharge and suction pressures are operating within
the allowable design limits for the compressor. If not, take the necessary
corrective action.
(2) Check the liquid line sight glass and expansion valve operation. If there
is an indication that the system is low on refrigerant, thoroughly check the
system for leaks before adding refrigerant.
(3) Check the level of the oil in the compressor sight glass (if so equipped).
Add oil as necessary. (4) The thermostatic expansion valve must be checked for
proper superheat settings. The sensing bulb must have
positive contact with the suction line and should be insulated. Valves
operating at a high superheat setting results in low refrigeration capacity.
Low superheat settings can cause liquid slugging and compressor bearing
washout. (Refer to the section on compressor and evaporator superheats) (5)
Check the voltage and amperage readings at the compressor terminals. Voltage
reading must be within the recommended guidelines. Normal operating amperages
can be much lower than the compressor nameplate values. (6) To check the high
pressure control setting it is necessary to build up the head pressure to the
cut-out point of the control. This can be done by stopping the condenser
fan(s) (air cooled condensing units) or pump and watching the pressure rise on
a high pressure gauge to make sure the high pressure control is operating at
the setting. (7) Check the low pressure settings by throttling the compressor
shut-off valve and allowing the compressor to pump down. This operation must
be done with extreme caution to avoid too sudden a reduction in crankcase
pressure, which will cause oil slugging and possible damage to the compressor
valves. Close the valve a turn a a time while watching the compound gauge for
change and allowing time for the crankcase pressure to equalize with the
pressure control bellows pressure. The slower the pressure is reduced, the
more accurate will be the check on the pressure control setting. (8) Recheck
all safety and operating controls for proper operation and adjust as
necessary. (9) Check defrost controls for initiation and termination settings,
and the length of defrost period. Set the fail safe on the time clock at the
length of defrost plus 25 %. (10) If the system is equipped with winter head
pressure controls (fan cycling or flooded valves), check for operation. See
details on page 14 for flooded valves. (11) Fill in the Service Log in the
back of this Installation Manual.
B50-BCU-IM-20
– 33 –
20/04/22
SYSTEM TROUBLESHOOTING
The following System Troubleshooting Guide lists the most common types of malfunctions encountered with refrigeration systems. These simple troubleshooting techniques can save time and money minimizing unnecessary downtime and end-user dissatisfaction.
Contact the factory or your local sales representative for further information or assistance.
System Troubleshooting Guide
Condensing Unit Problem
Possible Causes
Compressor will not run. Does not try to start.
1. Main power switch open.
2. Fuse blown or tripped circuit breaker.
3. Thermal overloads tripped.
4. Defective contactor or coil.
5. System shut down by safety devices.
6. Open thermostat or control. No cooling required.
7. Liquid line solenoid will not open.
Compressor hums, but will not start.
8. Loose wiring. 1. Improperly wired.
2. Low line voltage.
3. Loose wiring.
4. Defective start or run capacitor.
5. Defective start relay.
6. Motor windings damaged.
Compressor starts, but trips on overload protector.
7. Internal compressor mechanical damage. 1. Improperly wired.
2. Low line voltage.
3. Loose wiring.
4. Defective start or run capacitor.
5. Defective start relay.
6. Excessive suction or discharge pressure.
7. Tight bearings or mechanical damage in compressor.
8. Defective overload protector.
9. Motor windings damaged.
10. Overcharged system.
11. Shortage of refrigerant.
12. Suction or discharge pressure too high.
13. Inadequate ventilation.
Compressor short cycles.
14. Operating system beyond design conditions.
1. Low pressure control differential set too low. 2. Shortage of refrigerant.
3. Low airflow at evaporator(s). 4. Discharge pressure too high.
5. Compressor internal discharge valves leaking.
Start relay burns out.
6. Incorrect unit selection (oversized). 7. Check Compressor Time Delay
Setting (3-Minutes recommended)
1. Improperly wired.
2. Low or high line voltage.
3. Short cycling.
4. Improper mounting of relay.
5. Incorrect start or run capacitor.
Contact welded stuck on start relay
6. Incorrect relay. 1. Short cycling.
Start capacitor burns out
2. No bleed resistor on start capacitor. 1. Improperly wired.
2. Short cycling.
3. Low line voltage.
4. Relay contacts sticking.
5. Incorrect capacitor.
6. Start winding remaining in circuit for prolonged period.
B50-BCU-IM-20
– 34 –
20/04/22
SYSTEM TROUBLESHOOTING (cont’d)
System Troubleshooting Guide Continued
Condensing Unit Problem
Possible Causes
Compressor noisy or vibrating.
1. Flood back of refrigerant.
2. Improper piping support on the suction or discharge lines.
3. Broken or worn internal compressor parts.
4. Incorrect oil level.
5. Scroll compressor rotating in reverse (three phase).
Discharge pressure too high.
6. Improper mounting on unit base. 1. Non-condensables in the system.
2. System overcharged with refrigerant.
3. Discharge service valve partially closed.
4. Condenser fan not running.
5. Dirty condenser coil.(air-cooled condensers)
6. Dirty tubes. .(water-cooled condensers)
7. Defective or improperly set water regulating valve. (water-cooled condensers)
Discharge pressure too low.
8. Defective or improperly set flooded head pressure control. 1. Low suction pressure.
2. Cold ambient air.
3. Suction service valve partially closed.
4. Shortage of refrigerant.
5. Defective or improperly set water regulating valve. (water-cooled condensers)
Suction pressure too high.
6. Defective or improperly set flooded head pressure control. 1. Excessive load.
2. Compressor internal valves broken.
3. Incorrect unit selection (undersized).
Suction pressure too low.
4. Improper TXV bulb charge. 1. Shortage of refrigerant.
2. Evaporator dirty or iced up.
3. Clogged liquid line filter drier.
4. Clogged suction line filter or compressor suction strainers.
5. Expansion valve malfunctioning.
6. Condensing temperature too low.
7. Improper TX valve selection.
Low or no oil pressure.
8. Evaporator distributor feed problems. 1. Low oil level. (trapped oil in evaporator or suction line)
2. Clogged suction oil strainer.
3. Excessive liquid refrigerant in the crankcase.
4. Worn oil pump.
5. Oil pump reversing gear sticking in the wrong position.
6. Worn bearings.
7. Loose fitting on oil line.
Compressor loses oil.
8. Pump housing gasket leaking. 1. Refrigerant leak.
2. Short cycling.
3. Excessive compressor ring blowby.
4. Refrigerant flood back.
5. Improper piping or traps.
Compressor runs continuously
6. Trapped oil in evaporator. 1. Excessive load.
2. Too low of a system thermostat setting or defective thermostat.
3. Shortage of refrigerant.
4. Leaking compressor internal valves.
5. Malfunctioning liquid line solenoid.
6. Incorrect unit selection (undersized).
B50-BCU-IM-20
– 35 –
20/04/22
SYSTEM TROUBLESHOOTING (cont’d)
System Troubleshooting Guide Continued
Condensing Unit Problem
Possible Causes
Room temperature too high.
1. Defective room thermostat or improper differential / setting.
2. Malfunctioning liquid line solenoid valve. 3. Insufficient air across evaporator coil (iced up coil, product
blocking evaporator, fan blade / motor problem). 4. Improper evaporator superheat (low refrigerant charge,
plugged TXV strainer, poor TXV bulb contact, incorrect
TXV setting).
Room temperature too low.
5. Malfunctioning condensing unit. 1. Defective room thermostat or improper differential / setting.
Ice accumulating on ceiling.
2. Malfunctioning liquid line solenoid valve. 1. Defrost on too long (improper setting / defective termination
thermostat, improper setting / defective time clock). 2. Too many defrosts per day. 3. Fans not delayed after defrost (improper setting / defective
Evaporator coil not clear of ice after defrost.
fan delay thermostat). 1. Defrost on too short (improper setting / defective
termination thermostat, improper setting / defective time
clock).
2. Electric heaters defective / miswired / low voltage.
3. Not enough defrosts per day.
4. Air defrost evaporator operating at too low of temperature
(require electric defrost). 5. Defective / miswired interlock at compressor contactor.
Ice building up in drain pan.
6. Defective defrost contactor or coil. 1. Improper slope in pan.
2. Blocked drain line (unheated , not insulated). 3. Electric heater in drain pan defective / miswired / low
voltage). 4. Not enough defrosts per day.
5. Lack of or improper P-trap in drain line.
Evaporator fans will not operate.
1. Main power switch open.
2. Fuse blown or tripped circuit breaker.
3. Defective contactor or coil.
4. Room temperature too high (fan delay thermostat open).
5. Fan delay thermostat improper setting / defective. 6. Defective fan motor (low voltage / tripped on thermal
overload). 7. Defective time clock. 8. Normal mode during defrost cycle (electric defrost type
evaporator).
IMPORTANT TROUBLESHOOTING NOTE
Before any components are changed on the refrigeration system, the cause of
the failure must be identified. Further problems will exist unless the true
cause or problem is identified and corrected.
B50-BCU-IM-20
– 36 –
20/04/22
CUSTOMER INSTRUCTIONS
Completely fill in System Start-Up Worksheets located in Appendix C at the
back of this Installation and Maintenance Manual. This document should be left
with the equipment for future reference.
Give the owner / end user instructions on normal operation of the system.
Explain electrical characteristics, location of disconnect switches as well as
other safety precautions. Advise on keeping equipment area clean and free of
debris. If system has operational features, point these out to the operator.
MAINTENANCE PROGRAM
In order to ensure that the refrigeration system runs trouble free for many
years, a follow-up maintenance program (consisting of a minimum of two
inspections per year) should be set up. A qualified refrigeration service
mechanic should carry out this semi-annual inspection. The main power supply
must be disconnected and locked off to avoid accidental start up of the
equipment.
(1) Check electrical components and tighten any loose connections. (2) Check
all wiring and electrical insulators. (3) Check contactors to ensure proper
operation and contact point for wear. (4) Check that fan motors (if
applicable) are operational, ensure fan blades are tight and all mounting
bolts are tight. (5) Check oil and refrigerant levels in the system. (6)
Ensure that the condenser surface (if applicable) is cleaned and free of dirt
and debris. (7) Check the operation of the control system. Make certain that
all of the safety controls are operational and
functioning properly. (8) Check all refrigeration piping. Make sure that all
mechanical joints and flare nuts are tight.
SERVICE PARTS AVAILABILITY
Genuine replacement service parts should be used whenever possible. Refer to
the Service Parts List on the back cover of this Installation and Maintenance
Manual or attached to the unit. Parts may be obtained by contacting your local
sales representative or authorized distributor.
B50-BCU-IM-20
– 37 –
20/04/22
NOTES
B50-BCU-IM-20
– 38 –
20/04/22
Appendix A: Wiring Diagrams
Wiring Diagram Cross Reference
Condensing Unit Voltage
Condensing Unit Type
Diagram Number
Page
Evaporator Voltage and Type
Diagram Number
208-230/1/60 208-230/3/60 208-230/3/60 208-230/3/60
460/3/60 460/3/60
Small Scroll Small Scroll Small Scroll+ Coresense Large Scroll+ Coresense Small Scroll+ Coresense Large Scroll+ Coresense
208-230/1/60 208-230/3/60 460/3/60 & 575/3/60
208-230/1/60 208-230/3/60 208-230/3/60 460/3/60 & 575/3/60 460/3/60 & 575/3/60
Copelametic Bitzer Discus Discus
Discus Demand Cooling
COPELAND SCROLL
S2A1D T3A1A T3A1D T3C6A T4A6A T4C6A
A2
230 Air Defrost Low Profile
A3
230 Electric Defrost Low Profile
A5 2x 230 Electric Defrost Low Profile
A6 2x 230 Electric Defrost Med Profile
A9
460 Electric Defrost Med Profile
A10 2x 460 Electric Defrost Med Profile
COPELAND HERMETIC
S2A1A T3A1A T4A1A
A1
230 Air Defrost Low Profile
A3
230 Electric Defrost Low Profile
A8 2x 230 Electric Defrost Low Profile
SEMI-HERMETIC
KA101 LPE101 LPE201 JE101A JE101A JE201A
KA101 LPE101 JE101A
S2A1A T3B1A T3L1A T4L1A T4A4A
A1
230 Air Defrost Low Profile
KA101
A4
230 Electric Defrost Low Profile LPE101
A7 2x 230 Electric Defrost Low Profile LPE201
A12 460 Electric Defrost Med Profile JE101A
A11 2x 460 Electric Defrost Med Profile JE201A
Page
A13 A14 A15 A16 A16 A17
A13 A14 A16
A13 A14 A15 A16 A17
B50-BCU-IM-20
– 39 –
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Condensing Unit Wiring Diagram S2A1A
B50-BCU-IM-20
– 40 –
20/04/22
Condensing Unit Wiring Diagram S2A1D
B50-BCU-IM-20
– 41 –
20/04/22
Condensing Unit Wiring Diagram T3A1A
B50-BCU-IM-20
– 42 –
20/04/22
Condensing Unit Wiring Diagram T3B1A (Bitzer)
B50-BCU-IM-20
– 43 –
20/04/22
Condensing Unit Wiring Diagram T3A1D
B50-BCU-IM-20
– 44 –
20/04/22
Condensing Unit Wiring Diagram T3C6A
B50-BCU-IM-20
– 45 –
20/04/22
Condensing Unit Wiring Diagram T3L1A
B50-BCU-IM-20
– 46 –
20/04/22
Condensing Unit Wiring Diagram T4A1A
B50-BCU-IM-20
– 47 –
20/04/22
Condensing Unit Wiring Diagram T4A6A
B50-BCU-IM-20
– 48 –
20/04/22
Condensing Unit Wiring Diagram T4C6A
B50-BCU-IM-20
– 49 –
20/04/22
Condensing Unit Wiring Diagram T4A4A
B50-BCU-IM-20
– 50 –
20/04/22
Condensing Unit Wiring Diagram T4L1A
B50-BCU-IM-20
– 51 –
20/04/22
Evaporator Wiring Diagram KA101
B50-BCU-IM-20
– 52 –
20/04/22
Evaporator Wiring Diagram LPE101
B50-BCU-IM-20
– 53 –
20/04/22
Evaporator Wiring Diagram LPE201
B50-BCU-IM-20
– 54 –
20/04/22
Evaporator Wiring Diagram JE101A
B50-BCU-IM-20
– 55 –
20/04/22
Evaporator Wiring Diagram JE201A
B50-BCU-IM-20
– 56 –
20/04/22
Appendix B: Refrigerant Line Sizing Charts
B50-BCU-IM-20
– B1 –
20/04/22
REFRIGERANT LINE SIZING CHARTS
R134a
Capacity BTU/Hr.
+45°F SST Equivalent Length
R134a
Suction Line Size from Evaporator to Compressor R134a
+25°F SST Equivalent Length
+0°F SST Equivalent Length
-20°F SST Equivalent Length
-40°F SST Equivalent Length
Liquid Line Size
Receiver to TXV Equivalent Length
25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′
2000 3/8 3/8 3/8 1/2 1/2 3/8 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 3/8 7/8 7/8 1-1/8 5/16 5/16 5/16 5/16 5/16
3000 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 1/2 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 1/8 7/8 1-1/8 1-1/8 1-1/8 5/16 5/16 5/16 5/16 5/16
4000 1/2 1/2 1/2 1/2 5/8 1/2 5/8 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 5/16 5/16 5/16 5/16 5/16
6000 1/2 5/8 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 5/16 5/16 5/16 5/16 5/16
9000 5/8 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 5/16 5/16 5/16 5/16 3/8
12000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 3/8 3/8 3/8 3/8 3/8
15000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 3/8 3/8 3/8 3/8 1/2
18000 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 3/8 3/8 3/8 1/2 1/2
24000 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 3/8 3/8 1/2 1/2 1/2
30000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 1/2 1/2 1/2
36000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 1/2 1/2 1/2 5/8
48000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 1/2 1/2 1/2 5/8 5/8
54000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 1/2 1/2 5/8 5/8 5/8
60000 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 1/2 1/2 5/8 5/8 5/8
66000 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 1/2 5/8 5/8 5/8 7/8
72000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 1/2 5/8 5/8 5/8 7/8
78000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 1/2 5/8 5/8 5/8 7/8
84000 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 1/2 5/8 5/8 7/8 7/8
90000 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 1/2 5/8 5/8 7/8 7/8
120000 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 5/8 7/8 7/8 7/8 7/8
150000 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5/8 7/8 7/8 7/8 7/8
180000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 3-5/8 4-1/8 5-1/8 5-1/8 7/8 7/8 7/8 7/8 1-1/8
210000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 5-1/8 5-1/8 5-1/8 7/8 7/8 7/8 7/8 1-1/8
240000 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 3-5/8 4-1/8 5-1/8 5-1/8 5-1/8 7/8 7/8 7/8 1-1/8 1-1/8
300000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 4-1/8 5-1/8 5-1/8 5-1/8 6-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8
360000 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 4-1/8 5-1/8 5-1/8 6-1/8 6-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8
480000 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 4-1/8 5-1/8 5-1/8 5-1/8 6-1/8 5-1/8 6-1/8 6-1/8 6-1/8 8-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8
600000 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 4-1/8 5-1/8 5-1/8 6-1/8 6-1/8 5-1/8 6-1/8 8-1/8 8-1/8 8-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8
Notes: – Line sizes are calculated at 100% system capacity – Suction lines sized based on a maximum total pressure drop equivalent to 2°F – Sizing is based on 65°F return gas at compressor with a liquid temperature of 100°F – Line sizes are O.D. using type `L’ copper tubing. – Follow proper piping practices to ensure proper oil return, including proper slopes, traps and supporting. – Double suction risers might be necessary with cylinder unloading. Consult factory if unsure.
B50-BCU-IM-20
– B2 –
20/04/22
REFRIGERANT LINE SIZING CHARTS
R404A R507
Capacity BTU/Hr.
+45°F SST Equivalent Length
R404A R507 Suction Line Size from Evaporator to Compressor R404A R507
+25°F SST Equivalent Length
+0°F SST Equivalent Length
-20°F SST Equivalent Length
-40°F SST Equivalent Length
Liquid Line Size
Receiver to TXV Equivalent Length
25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′
2000 5/16 3/8 3/8 3/8 3/8 3/8 3/8 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 5/8 5/8 5/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
3000 5/16 3/8 3/8 3/8 1/2 3/8 3/8 1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 1/2 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
4000 5/16 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 1/2 5/8 5/8 5/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 3/8 3/8 3/8 3/8 3/8
6000 1/2 1/2 1/2 1/2 5/8 1/2 1/2 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8
9000 1/2 1/2 5/8 5/8 5/8 5/8 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8 3/8 3/8 3/8 3/8
12000 1/5 5/8 5/8 5/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8 3/8
15000 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1/1/8 1-3/8 1-3/8 1-3/8 1-5/8 3/8 3/8 3/8 3/8 1/2
18000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 3/8 1/2 1/2 1/2 1/2
24000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1/2 1/2 1/2 1/2 1/2
30000 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2 1/2 1/2 1/2 1/2
36000 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1/2 1/2 1/2 1/2 5/8
48000 7/8 1-1/8 1-1/8 1-1/8 1-/18 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1/2 1/2 5/8 5/8 5/8
54000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1/2 1/2 5/8 5/8 5/8
60000 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 5/8 5/8 5/8 5/8
66000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 5/8 5/8 5/8 7/8
72000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 5/8 5/8 5/8 7/8
78000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 7/8 7/8
84000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 7/8 7/8
90000 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 5/8 5/8 7/8 7/8 7/8
120000 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 5/8 7/8 7/8 7/8 7/8
150000 1-5/8 1-5/8 1-5/8 2-1/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 5/8 7/8 7/8 7/8 7/8
180000 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 3-5/8 7/8 7/8 7/8 7/8 1/1/8
210000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 7/8 7/8 7/8 1-1/8 1-1/8
240000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 7/8 7/8 1-1/8 1/1/8 1/1/8
300000 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 3-1/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 3-5/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8
360000 2-1/8 2-1/8 2-5/8 2-5/8 3-1/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8
480000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 3-5/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 4-1/8 5-1/8 5-1/8 5-1/8 6-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8
600000 2-1/8 2/5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3/5/8 3-1/8 3-5/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 4-1/8 5-1/8 5-1/8 6-1/8 6-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8
Notes: – Line sizes are calculated at 100% system capacity – Suction lines sized based on a maximum total pressure drop equivalent to 2°F – Sizing is based on 65°F return gas at compressor with a liquid temperature of 100°F – Line sizes are O.D. using type `L’ copper tubing. – Follow proper piping practices to ensure proper oil return, including proper slopes, traps and supporting. – Double suction risers might be necessary with cylinder unloading. Consult factory if unsure.
B50-BCU-IM-20
– B3 –
20/04/22
REFRIGERANT LINE SIZING CHARTS
R407A R407C R4 0 7 F
Capacity BTU/Hr.
R407A
+45°F SST Equivalent Length
R407C R4 0 7 F Suction Line Size from Evaporator to Compressor R407A R407C R4 0 7 F
+25°F SST Equivalent Length
+0°F SST Equivalent Length
-20°F SST Equivalent Length
-40°F SST Equivalent Length
Liquid Line Size
Receiver to TXV Equivalent Length
25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′
2000 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 1/2 1/2 3/8 1/2 1/2 1/2 5/8 1/2 1/2 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
3000 3/8 1/2 1/2 1/2 1/2 3/8 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 5/8 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
4000 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 1/2 5/8 5/8 5/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 3/8 3/8 3/8 3/8 3/8
6000 1/2 1/2 1/2 1/2 5/8 1/2 1/2 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8
9000 1/2 1/2 5/8 5/8 5/8 1/2 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8 3/8
12000 1/2 5/8 5/8 5/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8 3/8
15000 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 3/8 3/8 3/8 3/8 3/8
18000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 3/8 3/8 3/8 3/8 3/8
24000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 3/8 3/8 3/8 1/2 1/2
30000 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 3/8 3/8 1/2 1/2 1/2
36000 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 3/8 1/2 1/2 1/2 1/2
48000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1/2 1/2 1/2 5/8 5/8
54000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 1/2 5/8 5/8
60000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 1/2 5/8 5/8
66000 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8 5/8
72000 1-1/8 1-1/8 1/1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8 5/8
78000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 1/2 1/2 5/8 5/8 5/8
84000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-2/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 5/8 7/8
90000 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 5/8 7/8
120000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 5/8 5/8 7/8 7/8 7/8
150000 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 5/8 7/8 7/8 7/8 7/8
180000 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 5/8 7/8 7/8 7/8 7/8
210000 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 5/8 7/8 7/8 7/8 7/8
240000 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 7/8 7/8 7/8 7/8 1-1/8
300000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 3-1/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-3/8 4-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 7/8 7/8 7/8 1-1/8 1-1/8
360000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 5-1/8 5-1/8 5-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8
480000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 3-5/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 4-1/8 5-1/8 5-1/8 5-1/8 6-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8
600000 2-1/8 2-1/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-5/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 4-1/8 5-1/8 5-1/8 6-1/8 6-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8
Notes: – Line sizes are calculated at 100% system capacity – Suction lines sized based on a maximum total pressure drop equivalent to 2°F – Sizing is based on 65°F return gas at compressor with a liquid temperature of 100°F – Line sizes are O.D. using type `L’ copper tubing. – Follow proper piping practices to ensure proper oil return, including proper slopes, traps and supporting. – Double suction risers might be necessary with cylinder unloading. Consult factory if unsure.
B50-BCU-IM-20
– B4 –
20/04/22
REFRIGERANT LINE SIZING CHARTS
R448A
Capacity BTU/Hr.
+45°F SST Equivalent Length
R448A
Suction Line Size from Evaporator to Compressor R 4 4 8 A
+25°F SST Equivalent Length
+0°F SST Equivalent Length
-20°F SST Equivalent Length
-40°F SST Equivalent Length
Liquid Line Size
Receiver to TXV Equivalent Length
25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′
2000 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 5/8 5/8 5/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
3000 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 1/2 5/8 5/8 5/8 7/8 5/8 7/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
4000 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 1/2 5/8 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 3/8 3/8 3/8 3/8 3/8
6000 1/2 1/2 1/2 1/2 5/8 1/2 1/2 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8
9000 1/2 1/2 5/8 5/8 5/8 1/2 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8 3/8 3/8 3/8 3/8
12000 1/2 5/8 5/8 5/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8 3/8
15000 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 3/8 3/8 3/8 3/8 3/8
18000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 3/8 3/8 3/8 3/8 1/2
24000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 3/8 3/8 3/8 3/8 1/2
30000 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 3/8 3/8 1/2 1/2 1/2
36000 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 3/8 1/2 1/2 1/2 1/2
48000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 3/8 1/2 1/2 1/2 5/8
54000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1/2 1/2 1/2 1/2 5/8
60000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 1/2 5/8 5/8
66000 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8 5/8
72000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8 5/8
78000 7/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 3-1/8 1/2 1/2 5/8 5/8 5/8
84000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 1/2 5/8 5/8 5/8 7/8
90000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 5/8 5/8 5/8 5/8 7/8
120000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 5/8 5/8 5/8 7/8 7/8
150000 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 5/8 7/8 7/8 7/8 7/8
180000 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 5/8 7/8 7/8 7/8 7/8
210000 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 5/8 7/8 7/8 7/8 7/8
240000 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 7/8 7/8 7/8 7/8 1-1/8
300000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 1-1/8 4-1/8 5-1/8 7/8 7/8 7/8 1-1/8 1-1/8
360000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8
480000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 3-5/8 5-1/8 5-1/8 5-1/8 6-1/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8
600000 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 3-1/8 3-1/8 3-5/8 3-5/8 4-1/8 3-5/8 4-1/8 4-1/8 5-1/8 5-1/8 4-1/8 5-1/8 5-1/8 6-1/8 6-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8
Notes: – Line sizes are calculated at 100% system capacity – Suction lines sized based on a maximum total pressure drop equivalent to 2°F – Sizing is based on 65°F return gas at compressor with a liquid temperature of 100°F – Line sizes are O.D. using type `L’ copper tubing. – Follow proper piping practices to ensure proper oil return, including proper slopes, traps and supporting. – Double suction risers might be necessary with cylinder unloading. Consult factory if unsure.
B50-BCU-IM-20
– B5 –
20/04/22
REFRIGERANT LINE SIZING CHARTS
R22
Capacity BTU/Hr.
+45°F SST Equivalent Length
R22 Suction Line Size from Evaporator to Compressor R22
+25°F SST Equivalent Length
+0°F SST Equivalent Length
-20°F SST Equivalent Length
-40°F SST Equivalent Length
Liquid Line Size
Receiver to TXV Equivalent Length
25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75 100′ 150′ 25′ 50′ 75′ 100′ 150′ 25′ 50′ 75′ 100′ 150′
2000 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 1/2 1/2 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 1/2 5/8 5/8 5/8 7/8 3/8 3/8 3/8 3/8 3/8
3000 3/8 3/8 1/2 1/2 1/2 3/8 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 5/8 1/2 5/8 5/8 5/8 7/8 5/8 5/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
4000 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 5/8 1/2 1/2 5/8 5/8 5/8 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 3/8 3/8 3/8 3/8 3/8
6000 1/2 1/2 1/2 1/2 5/8 1/2 1/2 5/8 5/8 5/8 1/2 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 3/8 3/8 3/8 3/8 3/8
9000 1/2 1/2 1/2 5/8 5/8 1/2 5/8 5/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 3/8 3/8 3/8 3/8 3/8
12000 1/2 5/8 5/8 5/8 7/8 5/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8 3/8
15000 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 3/8 3/8 3/8 3/8 3/8
18000 5/8 5/8 7/8 7/8 7/8 5/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 3/8 3/8 3/8 3/8 3/8
24000 5/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-3/8 1-3/8 1-5/8 1-5/8 1-5/8 3/8 3/8 2/8 1/2 1/2
30000 7/8 7/8 7/8 7/8 1-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1/2 1/2 1/2 1/2 1/2
36000 7/8 7/8 7/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1/2 1/2 1/2 1/2 1/2
48000 7/8 1-1/8 1-1/8 1-1/8 1-1/8 7/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 1/2 1/2 1/2 1/2 5/8
54000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-3/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1/2 1/2 1/2 1/2 5/8
60000 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-5/8 1-5/8 1-5/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 1/2 1/2 1/2 5/8 5/8
66000 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 1/2 5/8 5/8
72000 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8 5/8
78000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-3/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 1/2 5/8 5/8 5/8
84000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 5/8 5/8 5/8 5/8
90000 1-1/8 1-1/8 1-3/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 1/2 5/8 5/8 5/8 7/8
120000 1-1/8 1-3/8 1-3/8 1-5/8 1-5/8 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 1/2 5/8 5/8 7/8 7/8
150000 1-3/8 1-3/8 1-5/8 1-5/8 2-1/8 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 5/8 5/8 7/8 7/8 7/8
180000 1-3/8 1-5/8 1-5/8 1-5/8 2-1/8 1-5/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 3-1/8 3-1/8 3-1/8 3-5/8 5/8 7/8 7/8 7/8 7/8
210000 1-3/8 1-5/8 1-5/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 5/8 7/8 7/8 7/8 7/8
240000 1-3/8 1-5/8 2-1/8 2-1/8 2-1/8 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-5/8 2-5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-5/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 7/8 7/8 7/8 7/8 1-1/8
300000 1-5/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-1/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 7/8 7/8 7/8 1-1/8 1-1/8
360000 1-5/8 2-1/8 2-1/8 2-1/8 2-5/8 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 7/8 7/8 1-1/8 1-1/8 1-1/8
480000 2-1/8 2-1/8 2-5/8 2-5/8 2-5/8 2-1/8 2-5/8 2-5/8 3-1/8 3-1/8 2-5/8 3-1/8 3-1/8 3-5/8 3-5/8 3-1/8 3-5/8 3-5/8 4-1/8 4-1/8 3-5/8 4-1/8 5-1/8 5-1/8 5-1/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8
600000 2-1/8 2-5/8 2/5/8 2-5/8 3-1/8 2-5/8 2-5/8 3-1/8 3-1/8 3-1/8 2-5/8 3-1/8 3-5/8 3-5/8 4-1/8 3-1/8 3-5/8 4-1/8 4-1/8 5-1/8 4-1/8 5-1/8 5-1/8 5-1/8 6-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8
Notes: – Line sizes are calculated at 100% system capacity – Suction lines sized based on a maximum total pressure drop equivalent to 2°F – Sizing is based on 65°F return gas at compressor with a liquid temperature of 100°F – Line sizes are O.D. using type `L’ copper tubing. – Follow proper piping practices to ensure proper oil return, including proper slopes, traps and supporting. – Double suction risers might be necessary with cylinder unloading. Consult factory if unsure.
B50-BCU-IM-20
– B6 –
20/04/22
Appendix C: Equipment Start-Up Sheets
B50-BCU-IM-20
– C1 –
20/04/22
Company/Location:
Condensing Unit Model: Evaporator Unit Model: Compressor model number Original
System start-up date: Refrigerant Type : System evacuation; # of times:
Expansion valve – Model Number:
Condensing Unit Serial:
Evaporator Unit Serial:
Compressor serial number
Today’s Date:
Total Charge:
LBS
Final micron:
ALL READINGS SHOULD BE MADE WITH PROPERLY CALIBRATED MEASURING EQUIPMENT ALL REQUIRED INFORMATION MUST BE SUPPLIED FOR AN ACCURATE DIAGNOSIS
System Conditions (Record after system has been running for a minimum of 4 hours or when lowest possible temperature has been reached)
Designed Box Temperature: Operating Box Temperature: Thermostat Setting: Cut-
In Thermostat Setting: Cut-Out Thermostat Differential Setting: Ambient
Temperature Around Box Exterior: Ambient Temperature @ Condensing Unit:
Discharge Pressure: Discharge Temperature @ Service Valve: Suction Pressure @
Service Valve: Suction Line Temperature @ Service Valve: Condensate Line
Temperature: Liquid Line Temp Leaving Receiver: Liquid Line Temp Leaving
Condensing Unit: Liquid Line Temp Entering TXV: Suction Pressure Leaving
Evaporator: Suction Line Temp @ TXV Bulb: Evaporator Superheat: Compressor
Superheat: CPR Setting: Pressure upstream of CPR: Pressure downstream of CPR:
Oil Pressure: Oil Level in Compressor Sightglass :
(Also, make note if bubbles are seen)
ºF ºF ºF ºF ºF ºF Show different temperatures if required and note on ºF
drawing. PSIG ºF 6″ away from discharge valve. PSIG ºF 6″ away from suction
service valve. ºF Line between the condenser and receiver. ºF ºF ºF PSIG If
available by schrader access. ºF ºF ºF PSIG If applicable. PSIG If applicable.
PSIG If applicable. PSIG 1/4, 1/2, 3/4 During refrigeration.
1/4, 1/2, 3/4 During pump down. 1/4, 1/2, 3/4 During start-up after defrost.
Air Temperature Entering Evaporator: Supply Air Temperature Leaving
Evaporator:
B50-BCU-IM-20
ºF ºF
– C2 –
20/04/22
Water Cooled Condenser GPM: PSIG: Pres-Drop: Water Valve Size: Water Valve Model:
Water Inlet: Water Outlet: Closed Loop: City Water:
Verify Inlet / Outlet Water Connection:
Electrical Data (Record while system is running at conditions on page one (C1))
Condensing Unit Condensing unit electrical: Voltage at compressor terminals: Amperage at compressor:
Volts L1-L2 L1
Phase L2-L3 L2
Evaporator Unit Evaporator unit electrical: Voltage at motor terminals:
Amperage at motor:
Evaporator Defrost Settings Defrost Settings – Number per day Defrost
Termination : Fan Delay Setting:
Volts L1-L2 L1
ºF ºF
Phase L2-L3 L2
HZ L1-L3 L3
HZ L1-L3 L3
SYSTEM LAYOUT
In the space below, provide piping schematic showing details on pipe size, line run length and P-trap locations
Suction Line Size OD :
Liquid Line Size OD:
Suction Riser Size OD:
B50-BCU-IM-20
– C3 –
20/04/22
EQUIPMENT AND BOX LAYOUT
In the space below, please provide sketch showing box location, unit cooler
location, condensing unit location complete with accurate dimensions.
A complete layout is required to visualize the job location and equipment
setup.
Outside Box Dimensions (Feet) : Box Wall Thickness (Inches) : Glass Door Dimensions (Inches) : Glass Door Construction : Number of Glass Doors :
Length Inches Length
Width Width
Height Height
BOX LOADING DETAIL
Room Heat Load from Motors or Machinery:
BTUH or Watts (Circle One)
| Description of any and all objects inside the box (required for product load) |
|---|
Lighting
B50-BCU-IM-20
– C4 –
20/04/22
MISCELLANEOUS Describe (in detail) frost pattern on distributor feeds:
Describe (in detail) frost pattern evaporator coil surface:
Is the TXV Bulb Insulated ? Describe location of TXV Bulb : (vertical or horizontal)
Yes / No
Is the Suction Line Insulated ?
Yes / No
Please make note of any other items that may have bearing on system performance and box temperature below:
B50-BCU-IM-20
– C5 –
20/04/22
NOTES
B50-BCU-IM-20
– C6 –
20/04/22
NOTES
B50-BCU-IM-20
– C7 –
20/04/22
PRODUCT SUPPORT RESOURCES
FOR SMALL CONDENSING UNITS (BEH, BEZ, BES, BQH, BQZ)
web: www.b-rp.ca/support email: smcu@b-rp.ca
call: 1-844-893-3222 x521
FOR MEDIUM AND LARGE CONDENSING UNITS (BMS/BMD, BVS/BVD) web:
www.b-rp.ca/support email: mdcu_lgcu@b-rp.ca call:
1-844-893-3222 x522
FOR REMOTE & WATER COOLED CONDENSING UNITS (RB, BX, BW)
web: www.b-rp.ca/support email: rcu-wccu@b-rp.ca call:
1-844-893-3222 x523
B50-BCU-IM-20
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20/04/22
PRODUCT SUPPORT RESOURCES
email: troubleshooting@b-rp.ca call:
1-844-893-3222 x529
web: www.b-rp.ca/parts
email: parts@b-rp.ca call:
1-844-893-3222 x504
web: www.b-rp.ca/warranty email: warranty@b-rp.ca call:
1-844-893-3222 x507
email: orders@b-rp.ca call:
1-844-893-3222 x501
email: shipping@b-rp.ca call:
1-844-893-3222 x503
B50-BCU-IM-20
– 71 –
20/04/22
“AS BUILT” SERVICE PARTS LIST
Ser vice Par ts List Label
To Be Attached HERE
DISTRIBUTED BY:
Bally Refrigeration Morehead City, NC · Brantford, ON · Longview, TX
1-800-242-2559
ballysales@ballyrefboxes.com www.ballyrefboxes.com
Due to the manufacturer’s policy of continuous product improvement, we reserve
the right to make changes without notice.
20/04/22
References
- Support - Bally Refrigeration
- Support - Bally Refrigeration
- Support - Bally Refrigeration
- Bally Walk-In Coolers & Freezers