HITACHI RAM-200FSPH Inverter Driven Multi Split System Air Conditioning Instruction Manual

: June 13, 2024
: Hitachi

Table of Contents

RAM-200FSPH Inverter Driven Multi Split System Air Conditioning
Product Information
Product Usage Instructions
Read User Manual Online (PDF format)
Download This Manual (PDF format)

RAM-200FSPH Inverter Driven Multi Split System Air Conditioning

Product Information

The product is an Inverter-Driven Multi-Split System Air
Conditioning unit. It is available in four models: RAM-200FSPH,
RAM-200FSPHDC, RAM-250FSPH, and RAM-250FSPHDC. The unit is designed
for common air conditioning purposes and should not be used for
other purposes such as food storage, animal housing, plant
cultivation, or work of art preservation.

There are certain installation requirements and precautions that
need to be followed to ensure safe and proper usage of the product.
These include avoiding installation in areas filled with mineral
oil mist or oil spray, places with sulfurous gas such as hot spring
areas, locations with strong salty wind such as coastal regions,
and acidic or alkaline environments. Additionally, special
attention should be given when installing the unit in hospitals or
facilities with electromagnetic radiation.

Product Usage Instructions

Before installation, carefully read the entire installation
manual and ensure it is kept properly.
Ensure that the manual is handed over to the workers involved
in the installation process and ultimately given to the
customer.
Assign an authorized dealer to perform the electrical work to
avoid the risk of electric shock. Improper electrical work can
result in serious injury or damage.
Follow relevant national regulations and the installation
manual while performing electrical work.
Use an exclusive circuit to prevent electric shock or fire
hazards caused by insufficient power capacity or improper
electrical work.
Avoid installing the unit in areas where it may directly expose
animals or plants to strong wind, as it can have adverse effects on
them.
When using the wireless remote controller, ensure that the
receiver is kept at least 1 meter away from lighting equipment to
prevent signal interference.
During the test run after installation, carefully observe any
abnormalities and explain the correct methods of usage and
maintenance to the customer based on the User’s Manual.

Installation Manual
Inverter-Driven Multi-Split System Air Conditioning Models:
RAM-200FSPH RAM-200FSPHDC RAM-250FSPH RAM-250FSPHDC

page

INDEX Table of Contents
2 Safety Precautions 3 Transportation and Handling 5 Installation Procedure 7 Refrigerant Piping Works 14 Electrical Wiring 16 DSW Dip Switch Setting 17 Test Run 18 Alarm Code

Before installation, please read this manual carefully and keep it properly. Make sure to hand over this manual to workers of the next stage and finally let the customer keep it.
(Transportation and Handling) (Refrigerant Piping) (Electrical Wiring) (Test Run) (Customer)
Important Notice
This Air Conditioner has been designed for common air conditioning for people. Do not apply to other purposes such as for food, animals, plants, high precision machines or work of art.
Do not install the unit in the following places. It may cause fire, deformation, corrosion or failure. o Places where is filled with mineral oil mist or oil spray (including machinery oil) or vapor is produced. o Places where is filled with sulfurous gas such as hot spring area.
Do not install the unit in the following places, it may cause corrosion. o Places where strong salty wind blows such as coast regions. o An acid or alkaline environment.
Pay attention to the following situations when the unit is installed in a hospital or other facilities where electromagnetic wave is radiated from medical equipment.
o Do not install the unit where the electromagnetic wave is directly radiated to the electrical box, remote control cable or remote-control switch
o To avoid the influence of electromagnetic waves via air, wave generating machines such as radio, medical equipment must be kept at least 3 meters form air conditioner.
Do not install the unit in the place where wind directly blows on animals or plants. It could adversely affect them. Using wireless remote controller, the receiver may fail to receive signals due to effect of the lighting equipment.
Therefore, keep the receiver away from the lighting equipment more than 1 meter as possible
1

1.Safety Precautions
Before installation, carefully read this section in order to install it correctly. This manual contains “Danger” . This symbol indicates a hazardous situation which if installed incorrectly
It may result in death or serious injury. Therefore, make sure to observe important message of safety. While checking any abnormality during test run after installation, explain to costumer the correct methods of
Usage and maintenance according to the User’s Manual. Then hand over the Installation Manual and User’s Manual to the costumer.

Danger : Indicates a hazardous situation which,
If not avoided, may result in death or serious injury

Enforcement matters, indicate Instructing behavior of general use.
Indicate prohibited item. Enforcement matters, machine with
a grounding terminal, the user must follow the instruction for groundwork.

About Electrical Works

Assign an authorized dealer to perform the electrical work. Please note that if improperly performed by yourself, it may result in electric shock.
Perform electrical work according to relevant national regulations and the installation manual. Make sure to use the exclusive circuit to avoid electric shock or fire due to insufficient capacity of power or improper work.

Use only specified wires for wiring between units. Incorrect selection of wires also causes fire or electric shock.

Ensure that the wiring terminals are tightened securely with the specified torques. If not, a fire or electrical shock at the terminals

connection part may occur.

Danger Fix the cables securely. External forces on the terminals could lead to a fire.
Installation of an earth leakage breaker (ELB) is necessary. If an ELB is not installed, current leakage may occur.

When Opening the service cover due to need of wiring work or inspection, make sure to completely cut off power before work to avoid electric shock.

Perform grounding according to the grounding work instructions. Incident of electric shock may occur if indoor and outdoor are not grounded. The ground wire must not be connected to gas pipe, water pipe, lighting rod and ground wire of telephone line. If the ground wire is not properly connected, it may result in electric shock.

About Installation

In installation, make sure to follow the instruction manual. If it is not followed, it may result in a water leakage, electric shock or a fire.

Please install the unit in a location that can provide full support of the unit’s weight. Otherwise, the unit may fall and cause injury.

Do not perform installation at locations subject to existence or entry of flammable gas.

Do not climb or put any object on the air conditioner to prevent injury caused by the unit falling.

Danger In the event of refrigerant leakage, immedietly turn off the fire source (e.g stoves), wipe the refrigerant off the floor, open the door
and windows for ventilation and then contact the service personnel or the dealer.

Use the adequate non-flammable refrigerant (R410A) and refrigerant oil (Idemitsu Kosan Co.,Ltd.)(FVC68d) to the outdoor unit in refrigerant cycle. Charging other refrigerant or refrigerant oil, oxygen, acetylene in the refrigerant cycle may result in explosion or fire.

It is strictly forbidden to connect any electrical appliances from indoor and outdoor unit terminal blocks and each contact point.

Operating Temperature Range:

Item Condition Air Inlet Temperature of Outdoor Unit

Cooling

-5 DB 43 DB

DB: Dry Bulb WB: Wet Bulb Air Inlet Temperature of Indoor Unit (Non-room Temperature)
21 DB/15 WB 32 DB/23 WB

2

2. Transportation and Handling

(1) When transporting the outdoor unit, observe the following item. Please transport the unit to the installation

location under packed condition. Hanging Method with Packing
Hang the unit with two ropes.

Hanging Method without Packing: Hang the unit with two ropes.

Thickness of plywood or

cardboard must

be 15mm above.

(2) The following are accessory parts of the outdoor unit. Please confirm it before installation.

Description Connecting Pipe Set Special Washer

Q’ty

Place of use

1 Used to connect gas piping

4 Fixing of Unit Base

Instruction Please refer to page 8 Please refer to page 6

Drain Connector Noise Filter (RAM-200, 250FSPH)

1 Base drainage for water 1 Power Ground Wire

Please refer to page 6 Please refer to page 15

(3) Before Installation

The pressure of refrigerant R410A is 1.4 times higher than conventional refrigerant; it is contaminated easily

by moisture, oxide, oil and other impurities. New refrigerant is adopted; therefore refrigerant oil also need to

be changed. When Installing, make sure to prevent moisture, oxide, oil, refrigerant oil, or other impurities

form getting into the refrigerant cycle.

Measuring instrument or tool which is directly contact to refrigerant must be used only for refrigerant R410A. [Legendfor new and old type refrigerant only for R410A (not for R22) only for R407C (not for R22)

for two type R410A and R407C]

Measuring Instrument and Tools

Interchangeability with R22
R407C R410A

Reason of non-interchangeability and precautions (only for new refrigerant) ( Strictly Required)

Purpose

Pipe Cutter

Cutting and deburring pipe

Flaring Tool
Gasket for pipe expansion

(Not use)

To ensure the high pressure of R410A, if using flaring tube, make the dimension of tube larger for R410A. If you continue to use existing product, shall be used with flaring tube adjustment gasket (1mm). (R410A special flaring tool can be used directly in the R407c)

Flaring for tubes
Dimensional control for extrusion portion of tube after flaring

Pipe Bender

Bending

Refrigerant Pipe

Expanding Tool Torque Wrench

Expanding Tubes

R410A for 12.7, 15.88; spanner size is up 2mm; existing product cannot be used

Connection of

For 6.359.5319.05; spanner size is the same.

Flare Nut

Brazing Tool

Perform correct brazing work.

Brazing for Tubes

Nitrogen Gas

Lubrication Oil

(for flare

surface)

Refrigerant Cylinder

Strict control against contamination. (Blow nitrogen during brazing)

Prevention from oxidation during brazing

Use a synthetic oil (FVC68D) which is equivalent to the oil

used in refrigerant cycle. Do not use R22 with mineral oil, and products must be used
the same synthetic oil.

Applying oil to the flared

Synthetic oil absorbs moisture quickly. Do not place it in the surface

humid environment.

C(hRe4c1k0Arefrpiginerka),n(tRc4y0li7nCderbcroolowrn. )

Refrigerant

Refrigerant must be charge in a state of liquid. (Charging in a state of gas is strictly prohibited.)

Charging

Vacuum Drying

Vacuum Pump
Rectifier for Vacuum Pump (prevent from reverse)

The current ones are applicable. However, it is required to mount a vacuum pump adapter which can prevent from reverse flow when a vacuum pump stops.

Vacuum Pumping

3

Manifold Valve
Charging Hose
Charging Cylinder

Prohibited

No interchangeability is available due to higher pressure when compared with R22. R410A connection diameter1/2 UNF R407C connection diameter7/16 UNF
<Do not use current ones (R22) to the different refrigerant>; if used, mineral oil will flow into the cycle and cause sludge, resulting in clogging or compressor failure.

Vacuum Pumping; Vacuum holding; refrigerant charging and pressure check

Refrigerant Charging

Weight Scale

Measuring instrument for refrigerant charging

Refrigerant gas leakage detector

The current gas leakage detector (R22) is not applicable due Gas leakage

to different detection method.

check

(4) The piping and connection parts, use the following R410A, Flare nut and the front part of pipe flare size also changes,

according to the following specifications used.

Unitmm

Pipe Size d

R407CR22

A

Size

+0 -0.4

R410A

6.35

9.0

9.1

9.53

13.0

13.2

12.7

16.2

16.6

15.88

19.4

19.7

19.05

23.3

Cannot be process

(1/2H material)

Please use the attached flare connecting pipe.

Pipe Thickness Selected

With the design pressure changes, the pipe thickness and material should also be changed.

New Refrigerant Piping Thickness(mm)

Existing Type

New Refrigerant

Pipe Size

R22

R407C

R410A

Thickness

Material

Thickness

Material

Thickness

Material

6.35

0.6

O

0.8

O

0.8

O

9.53

0.8

O

0.8

O

0.8

O

12.7

0.8

O

0.8

O

0.8

O

15.88

1.0

O

1.0

O

1.0

O

19.05

1.0

22.2

1.2

O

1.0

O

1.15

O

1.0

1/2H

1.0

1/2H

25.4

1.2

O

1.0

1/2H

1.0

1/2H

28.6

1.4

O

1.0

1/2H

1.0

1/2H

31.75

1.4

O

1.1

1/2H

1.1

1/2H

38.1

1.65

O

1.15

1/2H

1.35

1/2H

Selection of Joints As the Design pressure changes, the connection pipe (elbow etc.) thickness are also change. When using 1/2H material, the bending and flaring cannot be processed, so please follow the table below to choose the minimum thickness that appropriate to the connecting pipe. Please note that there are several changes in flare nut size.

Connection minimum thickness (mm)

Pipe Size R407CR22

R410A

6.35

0.5

9.53

0.6

12.7

0.7

15.88

0.8

19.05

0.8

Flare nut size B (mm)

Pipe Size
6.35 9.53 12.7

Flare Nut Size B(mm)

R407C R22

R410A

17

22

24

26

Pipe Size
22.2 25.4 28.6 31.75 38.1

R407CR22 0.9 0.95 1.0 1.05 1.25

R410A
0.9 0.95 1.0 1.1 1.35

Flare Nut

Pipe Size
15.88 19.05

Flare Nut Size B(mm)

R407C R22

R410A

27

29

36

Pipe

4

(5) Combination of Indoor Unit and Outdoor Unit

Please refer to the table below to select the quantity and capacity of Outdoor Units and Indoor Units.

Outdoor Unit Model
RAM-200FSPH(D) RAM-250FSPH(D)

Indoor Unit

Combined Capacity Ratio

Maximum quantity of combined units

50~130% (Outdoor unit capacity)

4~12

(6) Cooling Operating Instructions The same refrigerant system of indoor unit, the cooling shall be operated.
(7) Note This unit will not operate in the first 4 hours after power connection. The error code will be “d1-22”. Follow the steps below to deactivate protection if you need to operate the unit within 4 hours after power connection: 1) Connect the power of both the indoor and outdoor units. 2) Wait for 30 seconds. 3) Press the outdoor unit’s arrangement of PSW1 for more than 3 seconds.
3. Installation Procedure
(1) Selection of Installation Location NOTICE

Do not install the outdoor unit where there is a high level of oil mist, salty air or harmful
gases such as Sulphur. (Fault may occur more easily when installing in such
locations/environments. Apply special protection if it is necessary to install the air-
conditioner in this area.) 2) Do not install the outdoor unit where the electromagnetic wave is directly radiated to the
electrical box. 3) Install the outdoor unit as far as at least 3 meters form electromagnetic wave radiator. 4) Do not install the outdoor unit in the indoor unit.

Strong wind direction
Air Outlet

(2) Installation Space Retain maintenance space for the outdoor unit as shown below

Separate Installation

Above open

open on both side and Obstruction in the air outlet

top

side

(Unitmm) Row Installation (two or
more)
Outdoor unit must be spaced more than 100mm

(3) Installation Space 1) Install the outdoor unit where good ventilation is available, and where it is dry. 2) Install the outdoor unit where it is in the shade, or it will not be exposed to direct sunlight or direct radiation from high temperature heat. 3) The sound from the outdoor unit must not disturb your neighbor. The operating sound at the rear sides is 3db. 4) Unit air outlet must not directly flow to the plants or your neighbor’s window. 5) Do not install the heat exchanger in places where dust or scrap paper can enter easily. Add a wind guard (see below) as necessary to deflect wind. 6) Avoid installing the unit in places with headwind (wind directly blowing against the fan). Add a wind guard when installing in places with strong wind. 7) During installation, please note of the following: 1.To prevent the outdoor unit from falling, shaking, and producing noise in a strong wind or an earthquake, install the unit using appropriate methods. Determine the required installation strength by calculating the seismic strength. Do not install the unit at location where strong wing may blow off the roof or wall. Secure the unit with steel wire if necessary. 2. Add rubber cushions to the four legs of the unit stand, please use anti-vibration rubber. 3.The location should be convenient for draining rainwater and condensate form defrosting. For good drainage, the outdoor unit should be installed in places with drainage facilities. (When installing under roofs where condensate drips, this may wet the floor to cause fall in winter.) Also, using central draining pipes is easier. (In frigid zones, condensate from defrosting may freeze in winter, do not use
5

central draining pipes.) 4.Provide a foundation so that the entire footing of the outdoor unit can be mounted on the foundation. The height
of the foundation should be 100mm to 300mm higher than the ground level.

Strong wind blowing directly against the product installation method

Follow the instructions below when installing the unit on the roof with strong winds in the absence of obstruction:

Do not face the unit’s air outlet grill towards the strong winds. This will interfere the air ventilation of the unit and will cause damage to the unit.

· When strong winds blowing directly against the air outlet grille

Note: When strong winds continuously blow toward the air outlet of the outdoor unit, the ventilation fan will rotate in reverse and become damage. When on the roof or open space, the strong winds will damage the unit. Please make steel wire cable and other to fix the unit.
(4) Installation Work

6

4. Refrigerant Piping Works
(1) Piping Work 1)Refrigerant Pipe Selection Please prepare the refrigerant pipe by field supplied. Select clean copper pipes. Make sure there is no dust and moisture inside of the pipes. Cut off the refrigerant piping, use the pipe cutter. Blow the inside of the pipes with nitrogen or dry air, to remove any dust or foreign materials before connecting pipes. (Avoid using a saw or grinding stone tools so easy to produce powder. Caution for refrigerant piping work.
2) Piping Direction The pipe can be connected in four directions
Base Pipe Hole
7

Liquid Piping Connection (A Flare Nut)
Gas Piping Connection (Combine with the connecting Pipe Set)

Connecting Pipe Set (Flare Nut) Gas Side Piping

Rear Piping (Knock Out Hole)

Front Piping (Knock Out Hole)

Connecting Pipe Set (Welding) Gas Pipe Size

Rear Piping (Knock Out Hole)

8

Refrigerant piping length and height difference.
Because the longer pipe, can cause air conditioner cooling reduced capacity, so this factor to be considered for selected piping specifications.

Piping Connection Example:
These figures show examples of 4 indoor units combined with one outdoor unit. The refrigerant pipes are shown as single line in the diagrams. However, liquid line piping and gas line piping are required in the field piping work.

Outdoor

NO.0 Indoor

NO.1 Indoor

NO.2 Indoor

NO.3 Indoor

Actual Length

Maximum Piping Length

Equivalent Length

The Total Length

The outdoor unit is higher than that

Maximum Lift

of indoor unit.

between The outdoor unit is lower than that

Outdoor Unit

of indoor unit.

and Indoor Unit

Between each indoor unit

Maximum Piping Length

Between Each Multi-Kit and Each Indoor Unit
Between Multi-kit “a” And the Farthest Indoor Unit

Multi-kit And Connection
Pipe

The First Multi-Kit Pipe (a) And L1 Connection Pipe
Others Multi-kit Pipe And Connection Pipe

Outdoor Unit Model
RAM-200FSPH(D) RAM-250FSPH(D) Indoor Unit Total
Capacity (kW) 23
15~22.99

15

L1L2l 3150m Below

L1L2l 3190m Below

L1L2l0l1l2l 3300m Below

H 150m Below

H 140m Below

H 215m Below

l 0l 1l 2l 315m Below

l 440m Below
Gas / Liquid Pipe Size ( mm)
25.4 / 9.53 1
25.4 / 12.7 Gas/Liquid Pipe Size
( mm)
25.4 / 9.53

Multi-Kit Pipe Type E-NP452S
Multi-Kit Pipe Type E-NP452S

22.2 / 9.53 19.05 / 9.53

E-NP282S E-N55HT 2

1: RAM-200FSPH(D) piping length (L1l 4) exceed above 70m, the liquid pipe size from9.53 change to12.7
2: E-N55HT (Header Branch), It can be used that each indoor unit distribution and connection.

9

(2) Refrigerant Pipe Diameter Outdoor Unit
Model
RAM-200FSPH(D) RAM-250FSPH(D)

Pipe Diameter(mm)

Gas side 25.4 25.4

Liquid Side 9.53 12.7

Indoor Unit
Horsepower
0.8~6.0HP 22~160 Level

Pipe Diameter(mm)

Gas Side

Liquid Side

Please select according to the indoor model type and grade

The multi-kit pipe, which is connected to the indoor unit, be sure to use an optional part of the multi-kit pipe set, in order to prevent the uneven distribution of the refrigerant and causing the unit’s capacity reduction. Do not connect using connector.
In case of horizontal installation. Please ensure that the length of the straight pipe connected to the outdoor unit side must be at least 0.5m and that the piping on multi-kit pipe is kept on the same level. (The angle of tilt should not exceed 30°)

Ceiling

The tilt angle must be less than 30°

Straight Pipe 0.5m or more

On the same level

Ground

Tilt angle (View A)

For vertical installation Make sure that the length of the straight pipe before the multi-kit pipe is 0.5m or more.
Ceiling

Straight Pipe 0.5m or more

Ground

(3) How to support refrigerant piping
Connect the indoor unit and the outdoor unit with field-supplied refrigerant piping. Suspend the refrigerant piping at certain points and prevent the refrigerant piping form touching the weak part of the building such as wall, ceiling, etc. (If touched, abnormal sound may occur due to the vibration of the piping. Pay special attention in case of short piping length.)

Piping Fixation Interval

Pipe Size

20 20 or Less more

Maximum 1.0M 1.5m
Interval

10

(4) Piping Connection, Installation

1)Check if the stop valve of outdoor unit is closed. 2)Please connect the piping between indoor and outdoor unit. When tightening the joints of piping, in the inside and outside of flare piping, please coated with a layer of refrigerant oil [Field Supplied (Idemitsu Kosan Co., Ltd. Synthetic Oil “FVC68D”)], and in accordance with the provisions of tightening torque with double spanner to tighten. After tightening, please confirm the gas leakage once more. During brazing, please blow nitrogen into the piping. 3)Connect the indoor unit and outdoor unit with field-supplied refrigerant piping. Suspend the refrigerant piping at certain points and prevent the refrigerant piping from touching the weak part of the building such as wall, ceiling, etc. (If touched, abnormal sound may occur due to vibration of the piping. Pay special attention in case of short piping length.) 4)Please perform an air-tight test. Connect a manifold gauge to the check joints of the liquid and gas stop valves in the outdoor unit. Do not open the stop valves. Apply nitrogen gas pressure of 4.15MPaG. 5)The piping joint is covered with thermal insulation material and fixed with tape. In addition, the gaseous side and liquid side of the refrigerant piping also need to be coated with thermal insulation material separately.

Required Torque:

Spindle Valve Torque Nm

Piping Size (mm) and Tightening

Flare Nut

Torque N. m

Gas

Liquid

6.35(1/4″)

14-18

10~16

7~9

9.53(3/8″)

34-42

12.7(1/2″)

49-61

Hexagonal Wrench

15.88(5/8″)

68-82

Gas

Liquid

19.05(3/4″)

100-120

10mm 4mm

After connection piping and before implementation the air-tight test, please remove the liquid and gas stop valve
caps, the spindle valve ensures that be closed with tightening torque N.m. tightening the flare nut do not use more
than the torque marking on the table, too large torque will result in the spindle valve leakage.

After locking work is completed, please implement air leakage test. Note: 1.The work that after use the flare nut to connect pipe and stop valve, will be effective.
2.Because check joints and flare nut cannot connect, so please use the charging hoses. The spindle valve cap of stop valve is removed, due to internal O-ring and thread will be opened, the voices caused by gas emitting, which has nothing to do with leakage. 3.Do not apply an abnormal big force to the spindle valve at the complete opening (5.0N.m or smaller). 6)In order to prevent rainwater from entering the unit, be sure to install the piping cover, and install heat insulating materials in the piping so that there will be no gaps.
(5) Vacuum Work
1)Details of stop valve operation, please refer to the attention of nameplate inside service cover description. 2)Connect a manifold gauge to the check joints at both sides. Continue vacuum pumping work until the pressure reaches –
0.1MPa(-750mmHg) or lower for one to two hours.
3)After vacuum pumping work, stop the manifolds valve, stop the vacuum pump and leave it for one hour. Check to ensure that the pressure in the manifold gauge does not increase.
4)Because check joints and flare nut cannot connect, so please use the charging hoses. After the work, please tighten the flare nut with 16N.m of torque.
5)Check for any gas leakage at the flare nut connections, or brazed parts by gas leakage tester or foaming agent. The ff. is recommended for foam testing fluid [Field supplied (NUNPRO “SNOPP” or Yokogawa & Co., Ltd. “”)], component is not clear which is general household cleaner do not use the liquid as a foam testing.
6)Vacuum drying determination example:

11

Please implement vacuum drying determination, to confirm whether water exist within the system. If moisture is present, please extend the vacuum time or installation the drying filter until no moisture is present within the system. Be sure to do this work, otherwise in the future the unit could easily lead to failure, and difficult to handle.

Note: 1.When remove the spindle calve cap of stop valve, there may be slight refrigerant leakage sound is normal. 2.Use tool and measuring instrument only for the new refrigerant (R410A) which directly touch refrigerant. 3.If vacuum degree of -0.1MPa (-750mmHg) is not available, it is considered that leakage exists. Check for any
gas leakage once again. If no leakage exists, operate the vacuum pump for one to two hours.

(6) Additional Charge of Refrigerant

Outdoor unit has been filled with refrigerant, but still based on the length of pipe filled with an appropriate amount of refrigerant.

The filling amount of refrigerant, please follow the liquid piping length and the capacity of the indoor unit calculation.

Calculation Formula

No. Refrigerant

Content

Total Piping (L1L2l 0l 1l 2l 3) is within 30m

According to the pipe size from the branch pipe to the indoor liquid side (l 0l 1l 2l 3).

Additional charge of refrigerant:

1 W1

Pipe Diameter (l 0l 1l 2l 3)

Piping length Refrigerant amount Additional

(m)

per meter of piping charge(kg)

W11

9.53

m

x0.04

W12

6.35

m

x0.00

Additional Charging Refrigerant Amount (W1 kg) =(W11+W12)

Additional Charge of refrigerant
kg

Total Piping (L1L2l 0l 1l 2l 3) is exceeds 30m

According to the pipe size from the branch pipe to the indoor liquid side (L1L2l 0l 1l 2l 3)

Additional charge of refrigerant:

1

W1

(L1LP2ipel D0iaml 1etelr2l 3)

Piping length (m)

Refrigerant amount Additional per meter of piping charge (kg)

kg

W11

12.7

m

x0.12

W12

9.53

m

x0.07

W13

6.35

m

x0.03

Refrigerant Correction Amount (W0) = 2.0 (kg)

Additional Refrigerant Charging (W1 kg) =(W11+W12+W13) W0

When the number of connected indoor units exceeds 4, please add

refrigerant according to the following amount of refrigerant

Calculation of the connection capacity ratio of indoor units (total capacity

2

W2

of indoor units / capacity of outdoor units Condition

Refrigerant Volume

kg

Indoor Unit Capacity ratio is less than 100%

0.0kg

Indoor Unit Capacity ratio is 100~115%

0.5kg

Indoor Unit Capacity ratio is 116~130%

1.0kg

3

W Total amount of additional refrigerant charged (W kg) = (W1+W2)

kg

Notice

Tolerance for refrigerant charging quantity should be around ±0.1kg. Additional refrigerant too more or less, will result in compressor failure or others
abnormal condition, be sure to charge refrigerant according to calculate values. Filled with R410A refrigerant, the refrigerant must be charged as a liquid.

2)Fully open the gas line stop valve and slightly open the liquid line stop valve. 3)When cooling operation for charging refrigerant, connect the gauge manifold using charging hoses with
a refrigerant charging cylinder to the check joint of the liquid line stop valve.
12

4)Fully open the liquid line stop valve after completing refrigerant charge. 5)Be sure to implement leak detection.

(7) Precaution for Refrigerant Leakage In the room where the air conditioner is installed, in case of refrigerant leakage, the concentration of refrigerant should not exceed the limit This product uses non-flammable, non-toxic safe refrigerant R410A, in case the refrigerant of the indoor unit leaks and fills the whole room, there will be a danger of suffocation. Especially when multiple indoor units and outdoor units are connected by long-distance piping, the amount of refrigerant is more than that of individual air conditioners. Therefore, please confirm that in the room where the indoor unit is installed, even if a refrigerant leak occurs, the refrigerant concentration must be below the limit concentration when emergency measures are taken.
Please calculate limits refrigerant concentration by the following formula:
Total amount of refrigerant within the system(kg) limit(kg / m3) R410A target0.42kg / m3 Room indoor volume where it is installed(m3)
Precaution for new refrigerant R410A products: Since R410A is a non-azeotropic refrigerant, when refrigerant leakage, the refrigerant will result in weight percent composition changes, so cannot directly add refrigerant treatment, must be re-processing system.

(8) Caution for measuring pressure data from the check joints
Read the pressure data from the check joints of the gas line stop valve (right figure A) and the check joint of piping line (right figure B) after you connect. And please read the details in changing high- and lowpressure position of the connection according to the different operation state, please refer to the following description of the table:

Cooling

The check joints of gas line stop valve A

Low Pressure

The check joint of piping line B

High Pressure

The

check

joints

of

liquid

line

stop

valve

C

Specially use for refrigerant charging during vacuuming and maintenance.

(9) Refrigerant Recovery Methods
When the unit must be moved and outdoor refrigerant must recover, please follow these steps to implement the operation: 1)Please close the gas line stop valve, liquid line stop valve and the manifold gauge. 2)Please turn on the power source. 3)Setting to ON of outdoor unit electrical board DSW1-1, please implement cooling operation, then closed the liquid line stop valve, and refrigerant recovered operation will be started. 4)When the low-pressure (gas line stop valve) display -0.01MPa (-75mmHg), quickly run the following actions:
Close the gas line stop valve. Set DSW1-1 to OFF (Unit operation stops) 5)Please turn off the power source.
Caution Make sure that the pressure measured is not below -0.01MPa.
Pressure below -0.01MPa will result in compressor failure.

Figure A

13

5. Electrical Wiring
CAUTIONAll the field wiring and electrical components must comply with local codes.
5.1 Wiring Capacity

The indoor and outdoor unit transmission cable of the connection is a non- polar.
The type of earth leakage breaker required for the ” high-speed type ” (active time less than 0.1 sec.), when to buy, please

pay special attention.

Around the unit installed over current breaker, the manual switch and earth leakage breaker (ELB) should be separated

but need set up it together. 4) Outdoor unit power supply specification for the 3230V / 380V 60Hz

Wiring capacity, please according to the following table.

MODEL

Item

Power Supply 3, 60Hz

ELB (Earth Leakage Circuit Power Switch

Maximum Current (A)

Rated Current
(A)

Breaker) Rated Sensitivit y Current

Rating Current
(A)

Switch Capacity
(A)

Fuse Current
(A)

Power Supply
Size (mm2)

(mA)

1

2

3

Earth Wire (mm2)
4

Transmission Cable Size (mm2)
5

RAM-200FSPH RAM-250FSPH

37 230V
39

3

60

100

40

14

75

100

Twisted Wire

5.5

0.75(mm2) Total Length

1000m below

RAM-200FSPHD RAM-250FSPHD

21 380V
23

4

30

40

30

8

Twisted Wire

3.5

0.75(mm2) Total Length

1000m below

Note: When earth leakage breaker specification selection, please according to above table (Note: The earth leakage breaker of power supply 380V must use 34 wire.

Wiring Example:

5.2 Wiring Essential
The power source cord and transmission cable ,please according to the following essentials to implement. 1) To prevent electric shock accidents, in the electrical wiring, maintenance and other operations before to open the services cover, please turn off power supply completely before implementation. 2) Be sure the indoor unit power supply connects with each indoor unit which are all same outdoor unit. And all indoor unit, please install the inverter corresponding type earth leakage breaker (ELB) and the manual switch. 3) The transmission cable of the connection must be sure to connect the wiring with the same refrigerant cycle system of the unit. (On the outdoor unit, the refrigerant piping is connected to the indoor unit, its transmission cable is also sure to connect the same indoor unit.) Refrigerant piping and the transmission cable if connected with a different refrigeration cycle, there will be abnormal operation occurred. 4) The transmission cable of indoor and outdoor unit and the transmission cable of the connection between indoor units (DC5V), use 2-core shielded twist pair cable (0.75mm2 above). At the same time, the total length must be at 1000m below. 5) The transmission cable of the connection, use 2 core wire. (Do not use more than the 3-core wire.) 6) Does Power supply voltage match the rating voltage within±10% Due to higher or lower voltage, the unit will be damaged. 7) Check the capacity of the electrical wires. If the power source capacity is too low, the system cannot be started due to the voltage drop. 8) Indoor and outdoor unit is not grounded, electric shock and other accidents may be occurred, be sure to implement grounding fortifications. The grounding must use the grounding resistance 100 or less of three kinds of grounding fortification, make construction by qualified electrical personnel. 9) To prevent electric shock accidents, in the electrical wiring, maintenance and other operations before to open the services cover, please turn off power supply completely before implementation.
14

Caution of indoor and outdoor unit connection wiring construction The transmission cable of indoor and outdoor unit and the 220V power source cord, be sure to keep the distance of more than 5 ~ 6cm. Therefore, do not use the coaxial cable. If the transmission cable and power source cord connecting wrong, will cause the PCB of the outdoor unit burning, please pay special attention.
10) Indoor and outdoor unit’s power source cord and connection wiring methods:
11) Wiring Connection Port: After wiring, must be implemented sealing to prevent water invasion inside the metal conduit pipe.
· RAM-200~250FSPH
Pass the power cord through the noise filter (Gray).
Terminal Board (TB2) Terminal Board (TB1) Noise Filter (Gray)
· RAM-200~250FSPHD
Main power wiring
15

6.DSW Dip Switch Setting
TURN OFF all power sources before setting. Without turning OFF, the set value will be considered invalid. ( indicates the position of Dip Switch) (1) Transmission Method Setting
When multiple outdoor units share the same transmission line, need to set refrigerant cycle number and end terminal resistance. Setting of refrigerant cycle number:
Setting of end terminal resistance (PCB of outdoor unit): The unit before leaving the factory, No. 1 pin of DSW 5 is set at the “ON” side. In the case that the outdoor unit’s quantity
in the same H-Link is 2 or more, set No. 1 pin of DSW 5 at the “OFF” side from the 2nd unit. If only one outdoor unit is used, no setting is required. (2) Other Settings: RAM-200~ 250FSPH
RAM-200~250FSPHD
16

7. Test Run
Before Test Run
Before test run, please re-confirm the installation whether there are problems, also confirm the following points. In addition, please confirm it with the outdoor unit attached the installation manual.

Refrigerant piping and the transmission cable if connected with a different refrigeration cycle, there will be abnormal operation occurred.
Please use the 500V electrical resistance tester to confirm the electrical parts between terminals and earth electrical resistance must be 1M more than. If 1M or less, that poor the electrical insulation, please do not operation the unit. (Do not input the power source to the terminal No.1,2 of transmission wiring.)
When power source wiring phase error, the unit cannot be operated, and the remote controller display alarm code 05 . Currently, please refer to the electrical box caution nameplate, check the phase of the first side and replace it. The phase of the replacement work, please process under the power source turn off.
Does the oil heater of the outdoor unit have been powered? (Before using, please input power source more than 12 hours.

Test Run

When installation is completed, perform test run according to the following procedure, and make sure that whether the abnormal operation, then hand over the system to the customer.

Outdoor unit the gas stops valve and the liquid stop valve, make sure full open state. 2) Please implement the test run of the indoor unit in turn, confirm the refrigerant cycle system and the electrical wiring
system is the same. (While more than one indoor unit operation, the system is unable to confirm the consistency.) 3) Please according to the following procedure to test run, and make sure that whether the abnormal operation.
3.1 Depress the “MODE” and the “CHECK” switches together for more than 3 seconds. The “TEST RUN” and the counting number of the connected units are indicated on the remote control switch.
When cooling operation test run, it should be at room temperature DB 21 , WB 15 , outside air temperature DB -5 or more.(Outside air temperature DB -5 below, air conditioner cannot be operated.)
Using a remote controller to operation more than one indoor unit, please confirm whether the number of the units display. If no indication appears or the number of the units indicated is smaller than the actual number of the units, some abnormalities exist, please confirm it again. Depress the “MODE” switch again to set the desired mode of operation. 3.2 Depress “RUN/STOP” switch.
The “TEST RUN” operation will be started. (The 2 hours OFF-TIMER will be set, and the “TEST RUN” operation will be finished after 2 hours unit operation or by depressing the “RUN/STOP” switch again.) 3.3 To end the test run, wait for 2 hours or push “RUN/STOP” switch again.

Number of The Unit

0

1

2

3

4

…

10

11

…

63

Timer Setting Display

Left Two Digit

01

02

03

04

05

…

11

12

…

64

Ref. Cycle NO.

0

1

2

3

4

…

10

11

…

63

Timer Setting Display

Right Two Digit

01

02

03

04

05

…

11

12

…

64

NoteAfter the product stops operation, in order to recover the piping refrigerant to the outdoor unit, the compressor continues to operate a period of time (most about 10 minutes). Also, when the test run, it is not the product failure or abnormal.
When test running, the protection device will be activated for some abnormality, the controller’s operation indicator is still blinking, display “Alarm” (abnormality), while the setting temperature display will show alarm code.
Setting temperature and setting timer display changes:

Setting Timer Display

Setting Temperature Display

Abnormality

Occurred

01

23
Setting Temperature
01

(Display in sequence)

Abnormality Indoor Unit No.
F

Abnormality Indoor Unit Refrigerant Cycle
01

Unit Type (Unit Code)

Content of Abnormality (Alarm Code)
Total Number of Indoor Units Are the Same Refrigerant System with The Abnormal Indoor Unit.

At this time, please refer to page 18 of the alarm code to confirm the leading cause and treatment. If you cannot handle, please contact your contractor for assistance.
17

Alarm Code

Code Distinction

Content of Abnormality

Leading Cause

01 Indoor Unit 02 Outdoor Unit 03 Wiring 04 Inverter 05 Wiring

Indoor Unit Activation of Protection Device (Float Switch) Outdoor Unit Activation of Protection Device Transmission Abnormality between Indoor and Outdoor
Transmission Abnormality between Inverter PCB and Outdoor PCB
Abnormality Power Source Phases

Activation of Float Switch (High water Level Drain Pan, Abnormality of Drainpipe, Float Switch or Drain Pan)
Activation of High Pressure Switch (4.15MPa); Air Conditioner Outdoor Unit Fan Motor Lock.
Incorrect Wiring, Loose Terminals, Disconnect Wire, Blowout of Fuse, Outdoor Unit Power OFF.
Inverter PCB – Outdoor PCB Transmission Failure (Loose Connector, Wire Breaking, Blowout of Fuse), Abnormal fan motor controller transmitted, “04” the lower right will be “Signal flashing”.
Incorrect Power Source Phases, Connection to Reversed Phases, OpenPhases.

06 Voltage

Abnormality Inverter Voltage

Outdoor Voltage Drop, Insufficient Power Capacity.

07

Decrease in Discharge Gas Superheat

Refrigerant Cycle System

08

Increase in Discharge Gas Temperature

Excessive Refrigerant Charge, Failure of Thermistor, Incorrect Wiring, Incorrect Piping Connection, Expansion Valve Locking at Opened Position (Disconnect Connector).
Insufficient Refrigerant Charge, Pipe Clogging, Failure of Thermistor, Incorrect Wiring, Incorrect Piping Connection, Expansion Valve Locking at Closed Position (Disconnect Connector).

11

Abnormality Inlet Air Thermistor (Indoor)

Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit.

12

Abnormality Outlet Air Thermistor (Indoor)

Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit.

13 Indoor Unit Thermistor
14

Abnormality Freeze Protection Thermistor (Indoor)
Abnormality Gas Piping Thermistor (Indoor)

Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit. Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit.

19

Activation of Protection for Indoor Fan Motor

Fan Motor Overheat, Locking.

21

Abnormality High Pressure Thermistor (Outdoor)

22 23 Outdoor Unit
Thermistor 24
29
31 System
35
38 Outdoor Unit
43
44 Pressure
45
47
48 Outdoor Unit 51 53
Inverter 54
55

Abnormality Outdoor Air Thermistor

Abnormality Discharge Pipe Thermistor (Outdoor) Thermistor Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit.
Abnormality Heat Exchanger Liquid Pipe Thermistor (Outdoor)

Abnormality Low Pressure Thermistor (Outdoor)

Incorrect Capacity Setting of Outdoor and Indoor Unit
Incorrect Setting of Indoor Unit No.
Abnormality of Picking Up Circuit for Protection (Outdoor)
Activation of Low Pressure Decrease Protection Device
Activation of Low Pressure Increase Protection Device
Activation of High Pressure Increase Protection Device
Activation of Low Pressure Decrease Protection Device (Vacuum Operation Protection)
Activation of Inverter Overcurrent Protection Device

Incorrect Capacity Code Setting of Combination; Excessive or Insufficient Indoor Unit Total Capacity Code (outside of 80~120%)
Duplication of Indoor Unit No. In Same Ref. Gr., or The Connection Unit Number Exceeds the Maximum Number of Combination.
Failure of Protection Detecting Device (Incorrect Wiring of Outdoor PCB)
Defective Compressor (Failure of Compressor of Inverter, Loose Power Supply Connection) Overload at Cooling, High Temperature at Expansion Valve Locking (Loose Connector)
Overload Operation (Clogging, Short-Pass), Pipe Clogging, Excessive Refrigerant, Inert Gas Mixing. Insufficient Refrigerant, Pipe Clogging, Expansion Valve Locking at Open Position (Loose Connector).
Overload Operation, Compressor Failure.

Abnormality Inverter Current Sensor

Current Sensor Failure.

IPM Protection Activation Activation of Inverter Fin Thermistor Protection

Driver IC Error Signal Detection (Protection for Overcurrent, Low Voltage)
Abnormality Fin Thermistor, Heat Exchanger Clogging, Fan Motor Failure.

Inverter Failure

Inverter PCB Failure

57 Outdoor Unit
EE Compressor
b1 Wiring
b5

Activation of Outdoor Fan Controller Protection
Compressor Protection Alarm Incorrect Outdoor Unit Address Number or Unit Number Setting
Number of Indoor Units Connected Error.

Abnormality Fan Controller Protection (Overcurrent), Fin Overheat Compressor Occurred Three Times of Abnormality within 6 Hour. Over 64 Number Is Set for Address or Refrigerant Cycle. Connection of Non-H-LINK- Indoor Unit More Than 17 Units.

PSRemote control operation indicator flashes once every 2 seconds, the symbol of between the indoor unit and remote control for
the transmission abnormally (connector loss, loose, incorrect wiring, and disconnection). 4) Finally, please deliver the guarantee, operation manual, and installation manual, etc. to the customer to keep it.
DangerBefore the preparation of test running, please do not start running, be sure implementation to confirm the electrical wiring, etc.

18

Test Run and Maintenance Record

MODEL:

SERIAL. No.

CUSTOMER’S NAME AND ADDRESS:

COMPRESSOR MFG. No. DATE:

1. Is the rotation direction of the indoor coil fan correct?

2. Is the rotation direction of the outdoor coil fan correct?

3. Are there any abnormal compressor sounds?

4. Has the unit been operated at least twenty (20) minutes?

5. Check Room Temperature Inlet: No. 1 DB /WB , No. 2 DB /WB , No. 3 DB /WB , No. 4 DB /WB ,

Outlet: