Hi-Velocity RCM-30 Refrigerant Module Instruction Manual
- June 14, 2024
- Hi-Velocity
Table of Contents
Small Duct High Velocity Heating, Cooling and Home Comfort Systems
RCM-30 Refrigerant Module
Installation Manual
RCM-30 (1 Ton)
Includes:
Service/Access Ports
Freeze Stat
L-Mounting Brackets
Refrigerant Modules (RCM)
The cooling coil comes as a module and must be installed in the vertical
position on the return air side of the air handler. For return air sizes,
refer to Table 3 – Return air.
Refrigerant modules come with two L mounting brackets, access port(s), and an
external freeze stat*. Fig. 01 shows an installed coil assembly and how each
piece is connected.
*IMPORTANT: The Freeze Stat (anti-ice control) serves the purpose of preventing severe icing of the coil in the event of an undercharge or low load on the coil. This piece of equipment must be used at all times. Failure to properly install the freeze stat will result in RCM related warranty issues being voided.
- High side access port (if applicable)
- Low side access port
- Freeze Stat (Anti-ice Control)| 4) Liquid line
- Suction line
- Capillary tubes
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R series modules can be used on R-410A condensers; if R-410A refrigerant components are used. All Energy Saving Products R Series modules are shipped with R-410A refrigerant components.
Module RCM-30
RCM-30 Coil Module Installation
Mounting Brackets
Mounting the cooling coil to the air handler can be done with the L brackets supplied (Fig. 02), ensure that no screws puncture the drain pan or coil. Appendix B has the dimensions of the air handler units and cooling modules.
Access Ports
When refrigerant lines are connected to the air handler, access port(s) need
to be installed. (Fig. 01 – reference 1 & 2). The access port(s) are required
for system startup and for future trouble shooting or service.
Freeze Stat
The RCM Series cooling module comes with a freeze stat (anti-ice control). This freeze stat serves the purpose of preventing severe icing of the coil in the event of an undercharge or low load on the coil. NOTE: Do not remove protective bubble wrap from Freeze-Stat.
Install the anti-ice control (Freeze-Stat) above the center line of
the suction line and connect the wires to the Freeze Stat terminals on the air
handler circuit board (Fig. 01 & Fig. 03 – reference 3).
Ensure that the anti-ice control is fastened securely and is well insulated.
Do not use a self-tightening clamp on the anti-ice control, as the control may
be damaged by excessive tightening.
Important: The Freeze Stat (anti-ice control) must be used at all times. Failure to do so may void warranty.
Drain Connections, P – Trap & Secondary Drain Pan
Important: Piping the condensate lines on a return side cooling coil can
be dramatically different, be sure to read the following info.
The primary condensate drain must have a minimum 3” P-Trap installed (Fig.
05). The drain line must run at a slope of ¼” per foot in the direction of the
drain. RCM-30 modules come with a ¾” male CPVC primary and secondary outlet.
It is good practice to install a clean out right above the P-Trap. Using a
“tee fitting” and cap in the P-Trap’s construction can be used as the clean
out and as a way to prime the P-Trap if it ever dries out. A wet P-Trap is
important. A dry P-Trap can be detrimental to proper drainage. If code
requires a secondary drain line, run the secondary line using the same method
as primary. Otherwise, capping off the secondary drain line is acceptable. Do
not run the secondary drain line to the secondary drain pan or use it as a
vent to atmosphere! An equipment stand/riser or rubber equipment mat may be
necessary to elevate the module off of the ground to allow for a P-Trap.
Any installation that has the potential of property damage due to condensate
must have a secondary drain pan installed. If the unit is installed in a high
heat and/or high humidity location, extra insulation around the unit casing
may be required. This will prevent excessive condensate from forming on the
outer surface of the casing.
Piping the RCM
Only refrigerant grade pipe and fittings are to be used with HI Velocity
Systems. Plumbing fittings may contain wax or other contaminants which are
detrimental to the proper operation of the system. Insulate the suction line
with 3/8” insulation such as Arm flex. In high heat areas, 1/2” insulation
may be needed. If the lines are run in an area where temperatures could exceed
120°F or runs longer than 50’, then the liquid line may need to be insulated
as well. Support the pipe every 5 feet, or whatever local code states.
Run the pipes in the most direct route possible, taking into account
structural integrity and building details. If the evaporator is located above
the condenser, slope any horizontal runs toward the condenser. If the
condenser is located above the evaporator, a P- trap must be installed at the
bottom of the vertical riser. For long vertical risers, additional P-traps
must be installed for every twenty feet. For lines running over 50’, a suction
line accumulator must be installed. Lines running over 100’ are not
recommended.
Pipe Sizing
Tables 01 and 02 contain line sizing information for the liquid and suction lines.
Table 01 – Liquid Line sizes
| Tons
Distance| 1
1’–25’| ¼
26’–50’| 5/16
51’–75’| 3/8
76’–100’| 3/8
Table 02 – Suction Line sizes
| Tons
Distance| 1
1’–25’| 5/8
26’–50’| 5/8
51’–75’| ¾
76’–100’| ¾
The sizes given in the above tables are only for general reference, if the condenser manufacture requires a different size than specified in Table 01 and Table 02, their sizing shall be used whenever a discrepancy occurs.
Outdoor Unit Installation
Locate the outdoor unit in a suitable location, as close as possible to the air handler. Maintain the clearances recommended by the manufacturers of the outdoor unit, to ensure proper airflow. The outdoor unit must be installed level, in a properly supported location. A liquid line filter/drier is recommended to be installed.
Wiring – Outdoor Unit
Make all connections to the outdoor unit with rain tight conduit and fittings. Most building codes require a rain tight disconnect switch at the outdoor unit as well (always check local codes). Run the proper size copper wires to the unit, and connect as per the manufacturer’s recommendations.
Evacuating
After the piping is installed and all components have been brazed together, a
vacuum pump must be used to evacuate the system from both the low and high
side to 1500 microns.
Add pressure to the system to bring the pressure above zero psig. After
allowing the refrigerant to absorb moisture, repeat the above procedure.
Evacuate the system to 500 microns on the second evacuation, and ensure that
the system holds at the vacuum pressure. If not, check for leaks and evacuate
again. If the vacuum holds, add refrigerant to raise the pressure to 2 psig.
At this point open service valves on pre-charged condensing units, or add
refrigerant to the system.
The use of an electronic leak detector is recommended, as it is more sensitive
to small leaks under the low pressures.
Charging
Once the system has been determined clean and ready for charging, refrigerant can be added to the system. The service valves on the condenser must be open at this point. Never leave the system unattended when chargin. Charge to condenser manufacturer’s recommendations.
Super Heat
Super heat on Hi-Velocity Systems with the RCM Series should normally be around 8°F – 12°F. The suction line should be set at approximately 42°F.
Return Air
When sizing the return air ducts, keep in mind that if they are too small they
can create noise, but if they are too large, the air handler cannot build up
proper pressure. Table 03 has recommended return air sizes for round and
rectangular ducts.
A variance of plus/minus 20% is allowable for sizing return ducts that connect
to the Hi-Velocity Systems unit.
It is recommended to install a grill that is 10 – 20% larger than
specifications require, this will ensure that there is no air velocity noise
at the grill. Where allowed by local codes, a single return air grill may be
used. When using flexible duct for return air, use one
duct size larger due to the higher friction loss.
Table 03 – Return Air
Model| Return Air Size
31 Cube| 10”Ø or 100in² 12” flex duct
Specifications| RCM-30
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Matching Air Handler| CU-31 JH-15/30
Part Number| 4090200030
Tons (1)| 1.0 Ton (3.5 kWh)
Refrigerant Type| R-410A
TX Cooling MBH (2)| 6-12 (1.8-3.5 kW)
Fin Material| Aluminum
Tubing Material| Copper
Type of Fins| .006 Al (0.1524mm)
Hydronic Connection Sizes| Liquid Line (Lq)| 3/8” (9.5mm)
Suction Line (S)| 5/8” (15.9mm)
Drain Connection| 3/4” M CPVC (19mm)
TXV with Built in Check Valve & Bypass| Yes
Access Ports| Yes
Freeze Stat| Yes
Shipping Weight| 17 lbs (7.7kg)
Module Size (L x W x H)| 143⁄8” x 121⁄4” x 12 3⁄8”
(365mm x 311mm x 314mm)
- Minimum of four HE outlets four HE outlets per ton of cooling needed. (2″ Duct = Minimum eight outlets eight outlets per ton)
- Smaller condensers may be matched to the air handler when needed (match TXV to condenser size)
MBH – Thousand British Thermal Units per Hour
TX – Thermal Expansion
TXV – Thermal Expansion Valve
WARRANTY
Energy Saving Products Ltd. is proud to offer a limited warranty. This
warranty applies strictly to the first purchaser at wholesale level and only
to the Air Handler unit and module. It does not include connections,
attachments and other products or materials furnished by the installer.
This warranty excludes any damages caused by changes, relocation to, or
installation in a new site. This warranty does not cover any defects caused by
failure to follow the installation and operating instructions furnished with
the Air Handler. This warranty does not cover defects caused by failing to
adhere to local building codes and following good industry standards. Failure
to correctly install the Air Handler, or material related to the unit, may
result in improper system performance and/or damages and will void this
warranty. This warranty does not cover material installed in or exposed to a
corrosive environment. This warranty does not cover products subjected to
abnormal use, misuse, improper maintenance, or alteration of the product.
Using the Air Handler and/or module as a source of temporary heating/cooling
during construction will void this warranty.
A Five (5) Year Limited Warranty is extended on all components in products
manufactured exclusively by Energy Saving Products. These components include
Motors, WEG Controller, Circuit Boards, Dampers, Zoning Controls, Blowers,
Motor & Blower Assemblies, Heating Coils, Chilled Water Coils, and Air
Conditioning Coils. Note: If any product is installed in or exposed to a
corrosive environment, warranty will be void.
A Three (3) Year Limited Warranty is extended on Electric Strip Heaters.
A One (1) Year Limited Warranty is extended on replacement parts.
Products sold by Energy Saving Products but manufactured by others, will carry
the original manufacturer’s warranty.
TERMS & CONDITIONS
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Warranty will not be considered unless a contractor has contacted Energy Saving Products Ltd.
Technical Support department for assistance, and received a tech code. -
Any repair performed under warranty must be approved by Energy Saving Products Ltd. for this warranty to be valid.
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The liability of Energy Saving Products Ltd. is limited to and shall not exceed the cost of pre-approved replacement parts.
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This warranty does not cover shipping costs to and from the factory, labor costs or any other cost associated with the installation of the replacement part.
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Inoperative parts must be returned to Energy Saving Products Ltd. with an ESP RMA Form that includes model, serial number, and a detailed description of the entire problem. Inoperative parts must be returned in testable condition.
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Energy Saving Products Ltd. is not liable for any other damages, personal injury, or any other losses of any nature.
Follow these steps for Service or Repair:
- Contact the installer of the product or a licensed service company
- Contact the distributor
- Contact Energy Saving Products Ltd. Mon-Fri 8 am – 4:30 pm MT 1-888-652-2219
This warranty replaces all other warranties expressed or implied.
www.hi-velocity.com
Energy Saving Products Ltd, established in 1983, manufactures the Hi-Velocity
SystemsTM product line for residential, commercial and multi-family markets.
Our facilities house Administration, Sales, Design, Manufacturing, as well as
Research & Development complete with an in-house test lab. Energy Saving
Products prides itself on Customer Service and provides design services and
contractor support.
For all of your Heating, Cooling and Indoor Air Quality needs, the Hi-Velocity
System is the right choice for you!
Small Duct Heating, Cooling and IAQ Systems
Build Smart, Breathe Easy
Hi-Velocity HE-Z Air Handlers, Green Technology
Phone: 780-453-2093
Fax: 780-453-1932
Toll Free: 1-888-652-2219
www.hi–velocity.com
Documents / Resources
| Hi-
Velocity RCM-30 Refrigerant
Module
[pdf] Instruction Manual
RCM-30 Refrigerant Module, RCM-30, Refrigerant Module, Module
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