Hitachi RAM-200FSPH User manual

1
Installation Manual
Inverter-Driven
Multi-Split System
Air Conditioning
Models:
INDEX Table of Contents
page
2
Safety Precautions
RAM-200FSPH
3
Transportation and Handling
RAM-200FSPHDC
5
Installation Procedure
7
Refrigerant Piping Works
RAM-250FSPH
14
Electrical Wiring
RAM-250FSPHDC
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.
oPlaces where is filled with mineral oil mist or oil spray (including machinery oil) or vapor is produced.
oPlaces where is filled with sulfurous gas such as hot spring area.
․Do not install the unit in the following places, it may cause corrosion.
oPlaces where strong salty wind blows such as coast regions.
oAn acid or alkaline environment.
o
․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.
oDo not install the unit where the electromagnetic wave is directly radiated to the electrical box, remote
control cable or remote-control switch
o
oTo 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.
o
․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

2
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,
：Enforcement matters, indicate
If not avoided, may result in death or
Instructing behavior of general use.
serious injury
：Indicate prohibited item.
：Enforcement matters, machine with
a grounding terminal, the user must
follow the instruction for groundwork.
About Electrical Works
About Installation
⚠
Danger
․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.
․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:
Condition
Item
Air Inlet Temperature of Outdoor Unit
Air Inlet Temperature of Indoor Unit (Non-room Temperature)
Cooling
-5℃DB ～43℃DB
21℃DB/15℃WB ～32℃DB/23℃WB
⚠
Danger
․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.
․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.
DB: Dry Bulb WB: Wet Bulb

3
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.
(2)The following are accessory parts of the outdoor unit. Please confirm it before installation.
Description
Q’ty
Place of use
Instruction
Connecting Pipe Set
1
Used to connect gas piping
Please refer to page 8
Special Washer
4
Fixing of Unit Base
Please refer to page 6
Drain Connector
1
Base drainage for water
Please refer to page 6
Noise Filter (RAM-200, 250FSPH)
1
Power Ground Wire
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.
[Legend：○for 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
Reason of non-interchangeability and precautions
(only for new refrigerant)
(◎ Strictly Required)
Purpose
R407C
R410A
Refrigerant Pipe
Pipe Cutter
○
○
Cutting and
deburring pipe
Flaring Tool
○
○■
●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
Gasket for pipe
expansion
─
(Not
use)
■
Dimensional control
for extrusion portion
of tube after flaring
Pipe Bender
○
○
Bending
Expanding Tool
○
○
Expanding Tubes
Torque Wrench
○
■
●R410A for Φ12.7, Φ15.88; spanner size is up 2mm; existing
product cannot be used
Connection of
Flare Nut
○
●For Φ6.35、Φ9.53、Φ19.05; spanner size is the same.
Brazing Tool
○
○
●Perform correct brazing work.
Brazing for Tubes
Nitrogen Gas
○
○
●Strict control against contamination. (Blow nitrogen during
brazing)
Prevention from
oxidation during
brazing
Lubrication Oil
(for flare
surface)
●
■
●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.
●Synthetic oil absorbs moisture quickly. Do not place it in the
humid environment.
Applying oil to
the flared
surface
Vacuum Drying
and Refrigerant
Change
Refrigerant
Cylinder
●
■
●Check refrigerant cylinder color.
(R410A：pink), (R407C：brown)
◎Refrigerant must be charge in a state of liquid. (Charging
in a state of gas is strictly prohibited.)
Refrigerant
Charging
Vacuum Pump
○
○
◎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
Rectifier for
Vacuum Pump
(prevent from
reverse)
※●
■
Thickness of
plywood or
cardboard must
be 15mm above.
●Hanging Method without Packing:
Hang the unit with two ropes.

4
New Refrigerant Piping Thickness(mm)
Flare nut size B (mm)
Connection minimum thickness (mm)
Manifold Valve
●
■
No interchangeability is available due to higher pressure when
compared with R22.
R410A connection diameter：1/2 UNF
R407C connection diameter：7/16 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
Charging Hose
●
■
Charging Cylinder
Prohibited
Refrigerant Charging
Weight Scale
○
○
Measuring instrument
for refrigerant charging
Refrigerant gas
leakage detector
※●
■
The current gas leakage detector (R22) is not applicable due
to different detection method.
Gas leakage
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.
Unit：mm
Pipe Size
Φ d
A Size
R407C、R22
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.
Pipe Size
Existing Type
New Refrigerant
R22
R407C
R410A
Thickness
Material
Thickness
Material
Thickness
Material
Φ6.35
0.6
O
0.8
O
0.8
O
Φ9.53
0.8
O
0.8
O
0.8
O
Φ12.7
0.8
O
0.8
O
0.8
O
Φ15.88
1.0
O
1.0
O
1.0
O
Φ19.05
1.0
O
1.0
O
1.0
1/2H
Φ22.2
1.2
O
1.15
O
1.0
1/2H
Φ25.4
1.2
O
1.0
1/2H
1.0
1/2H
Φ28.6
1.4
O
1.0
1/2H
1.0
1/2H
Φ31.75
1.4
O
1.1
1/2H
1.1
1/2H
Φ38.1
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.
Pipe Size
R407C、R22
R410A
Pipe Size
R407C、R22
R410A
Φ6.35
0.5
0.5
Φ22.2
0.9
0.9
Φ9.53
0.6
0.6
Φ25.4
0.95
0.95
Φ12.7
0.7
0.7
Φ28.6
1.0
1.0
Φ15.88
0.8
0.8
Φ31.75
1.05
1.1
Φ19.05
0.8
0.8
Φ38.1
1.25
1.35
Pipe Size
Flare Nut Size B(mm)
Pipe Size
Flare Nut Size B(mm)
R407C、
R22
R410A
R407C、
R22
R410A
Φ6.35
17
17
Φ15.88
27
29
Φ9.53
22
22
Φ19.05
36
36
Φ12.7
24
26
+0
-0.4
Pipe
Flare Nut

5
(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
Indoor Unit
Combined Capacity Ratio
Maximum quantity of combined units
RAM-200FSPH(D)
50~130% (Outdoor unit capacity)
4~12
RAM-250FSPH(D)
(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
(2) Installation Space
Retain maintenance space for the outdoor unit as shown below (Unit：mm)
Separate Installation
Separate Installation
Separate Installation
Row Installation (two or
more)
Above open
open on both side and
top
Obstruction in the air outlet
side
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
1) 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.
NOTICE
Strong wind
direction
Air Outlet

6
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:
●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
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.
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 strong winds blowing directly against the air outlet grille

7
4. Refrigerant Piping Works
(1) Piping Work
1)Refrigerant Pipe Selection
①Please prepare the refrigerant pipe by field supplied.
②Select 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

8
Front Piping
(Knock Out Hole)
Liquid Piping Connection
(ΦA Flare Nut)
Gas Piping Connection
(Combine with the
connecting Pipe Set)
Rear Piping
(Knock Out Hole)
Rear Piping
(Knock Out Hole)
Connecting Pipe Set
(Welding) Gas Pipe Size
Connecting Pipe Set
(Flare Nut) Gas Side
Piping

9
3) 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.
Maximum
Piping Length
Actual Length
L1＋L2＋l 3：150m Below
Equivalent Length
L1＋L2＋l 3：190m Below
The Total Length
L1＋L2＋l0＋l1＋l2＋l 3：300m Below
Maximum Lift
between
Outdoor Unit
and Indoor Unit
The outdoor unit is higher than that
of indoor unit.
H 1：50m Below
The outdoor unit is lower than that
of indoor unit.
H 1：40m Below
Between each indoor unit
H 2：15m Below
Maximum
Piping Length
Between Each Multi-Kit and Each
Indoor Unit
l 0、l 1、l 2、l 3：15m Below
Between Multi-kit "a" And the
Farthest Indoor Unit
l 4：40m Below
Multi-kit And
Connection
Pipe
The First Multi-Kit Pipe (a)
And L1 Connection Pipe
Outdoor Unit Model
Gas / Liquid Pipe Size
(Φ mm)
Multi-Kit Pipe Type
RAM-200FSPH(D)
25.4 / 9.53 ※1
E-NP452S
RAM-250FSPH(D)
25.4 / 12.7
Others Multi-kit Pipe
And Connection Pipe
Indoor Unit Total
Capacity (kW)
Gas/Liquid Pipe Size
(Φ mm)
Multi-Kit Pipe Type
23
25.4 / 9.53
E-NP452S
15~22.99
22.2 / 9.53
E-NP282S
E-N55HT ※2
15
19.05 / 9.53
※1: RAM-200FSPH(D) piping length (L1＋l 4) exceed above 70m, the liquid pipe size fromΦ9.53 change toΦ12.7。
※2: E-N55HT (Header Branch), It can be used that each indoor unit distribution and connection.
Outdoor
NO.0
NO.1
NO.2
NO.3
Indoor
Indoor
Indoor
Indoor

10
(2) Refrigerant Pipe Diameter
Outdoor Unit
Model
Pipe Diameter(mm)
Gas side
Liquid Side
RAM-200FSPH(D)
Φ25.4
Φ9.53
RAM-250FSPH(D)
Φ25.4
Φ12.7
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°)
For vertical installation
Make sure that the length of the straight pipe before the multi-kit pipe is 0.5m or more.
(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
Less
20 or
more
Maximum
Interval
1.0M
1.5m
Indoor Unit
Horsepower
Pipe Diameter(mm)
Gas Side
Liquid Side
0.8~6.0HP
22~160 Level
Please select according to the
indoor model type and grade
The tilt angle must be less than 30°
Tilt angle (View A)
Ceiling
Ground
Straight Pipe
0.5m or more
On the same level
Ceiling
Ground
Straight Pipe
0.5m or more
Straight Pipe
0.5m or more

11
(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.
①After 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.
②After 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. “ｷｭﾎﾟﾌﾚッｸｽ”)],
component is not clear which is general household cleaner do not use the liquid as a foam testing.
6)Vacuum drying determination example:
Required Torque:
Spindle Valve Torque
N．m
Piping Size (mm) and
Flare Nut
Tightening
Torque N. m
Gas
Liquid
Φ6.35(1/4”)
14-18
10~16
7~9
Φ9.53(3/8”)
34-42
Φ12.7(1/2”)
49-61
Hexagonal Wrench
Φ15.88(5/8”)
68-82
Gas
Liquid
Φ19.05(3/4”)
100-120
10mm
4mm

12
※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
1) 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
Additional
Charge of
refrigerant
1
W1
Total Piping (L1＋L2＋l 0＋l 1＋l 2＋l 3) is within 30m
According to the pipe size from the branch pipe to the indoor liquid side
(l 0、l 1、l 2、l 3).
Additional charge of refrigerant:
Pipe Diameter
(l 0、l 1、l 2、l 3)
Piping length
(m)
Refrigerant amount
per meter of piping
Additional
charge(kg)
W11
9.53
m
x0.04
W12
6.35
m
x0.00
Additional Charging Refrigerant Amount (W1 kg) =(W11+W12)
kg
1
W1
Total Piping (L1＋L2＋l 0＋l 1＋l 2＋l 3) is exceeds 30m
According to the pipe size from the branch pipe to the indoor liquid side
(L1、L2、l 0、l 1、l 2、l 3)
Additional charge of refrigerant:
Pipe Diameter
(L1、L2、l 0、l 1、l 2、l 3)
Piping length
(m)
Refrigerant amount
per meter of piping
Additional
charge (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
kg
2
W2
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
of indoor units / capacity of outdoor units
Condition Refrigerant Volume
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
kg
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.
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.

13
≦ limit(kg / m3) ← R410A target0.42kg / m3
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)
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 low-
pressure position of the connection according to the different operation state, please refer to the following
description of the table:
(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.
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.
Figure A

14
5. Electrical Wiring
5.1 Wiring Capacity
1) The indoor and outdoor unit transmission cable
of the connection is a non-polar.
2) 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.
3) 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 3Φ230V / 380V 60Hz。
5) Wiring capacity, please according to the following table.
Item
MODEL
Power
Supply
3Φ, 60Hz
Maximum
Current
(A)
ELB (Earth Leakage Circuit
Breaker)
Power Switch
Power
Supply
Size
(mm2)
Earth
Wire
(mm2)
Transmission
Cable Size
(mm2)
Rated
Current
(A)
Rated
Sensitivit
y Current
(mA)
Rating
Current
(A)
Switch
Capacity
(A)
Fuse
Current
(A)
○
1
○
2
○
2
○
3
○
4
○
5
RAM-200FSPH
230V
37
3
100
60
60
40
14
5.5
Twisted Wire
0.75(mm2)
Total Length
1000m below
RAM-250FSPH
39
75
100
RAM-200FSPHD
380V
21
4
30
40
40
30
8
3.5
Twisted Wire
0.75(mm2)
Total Length
1000m below
RAM-250FSPHD
23
Note: When earth leakage breaker specification selection, please according to above table (Note: The earth leakage breaker of
power supply 380V must use 3Φ4 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 100Ω 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.
CAUTION：All the field wiring and electrical components must comply with local codes.

15
•RAM-200~250FSPH
Pass the power cord through the noise filter (Gray).
•RAM-200~250FSPHD
●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.
Noise Filter (Gray)
Terminal Board (TB2) Terminal Board (TB1)
Main power wiring

16
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

17
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.
1) Refrigerant piping and the transmission cable if connected with a different refrigeration cycle, there will be abnormal
operation occurred.
2) Please use the 500V electrical resistance tester to confirm the electrical parts between terminals and earth electrical
resistance must be 1MΩ more than. If 1MΩ 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.)
3) 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.
4) 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.
1) 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.
●Note：After 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:
●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.
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
Total Number of Indoor Units Are the
Same Refrigerant System with The
Abnormal Indoor Unit.
01 ● 01 01
F ● 01
(Display in sequence)
Unit Type (Unit Code)
Content of Abnormality
(Alarm Code)
Abnormality Indoor
Unit Refrigerant Cycle
Abnormality
Indoor Unit No.
Setting Timer Display
Setting Temperature Display
Abnormality
Occurred
23
Setting Temperature

18
Alarm Code
PS：Remote 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.
Danger：Before the preparation of test running, please do not start running, be sure implementation to confirm the electrical wiring,
etc.
Code
Distinction
Content of Abnormality
Leading Cause
01
Indoor Unit
Indoor Unit Activation of Protection Device (Float
Switch)
Activation of Float Switch (High water Level Drain Pan, Abnormality of
Drainpipe, Float Switch or Drain Pan)
02
Outdoor Unit
Outdoor Unit Activation of Protection Device
Activation of High Pressure Switch (4.15MPa); Air Conditioner Outdoor
Unit Fan Motor Lock.
03
Wiring
Transmission Abnormality between Indoor and
Outdoor
Incorrect Wiring, Loose Terminals, Disconnect Wire, Blowout of Fuse,
Outdoor Unit Power OFF.
04
Inverter
Transmission Abnormality between Inverter PCB
and Outdoor PCB
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”.
05
Wiring
Abnormality Power Source Phases
Incorrect Power Source Phases, Connection to Reversed Phases, Open-
Phases.
06
Voltage
Abnormality Inverter Voltage
Outdoor Voltage Drop, Insufficient Power Capacity.
07
Refrigerant
Cycle System
Decrease in Discharge Gas Superheat
Excessive Refrigerant Charge, Failure of Thermistor, Incorrect Wiring,
Incorrect Piping Connection, Expansion Valve Locking at Opened
Position (Disconnect Connector).
08
Increase in Discharge Gas Temperature
Insufficient Refrigerant Charge, Pipe Clogging, Failure of Thermistor,
Incorrect Wiring, Incorrect Piping Connection, Expansion Valve Locking
at Closed Position (Disconnect Connector).
11
Indoor Unit
Thermistor
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
Abnormality Freeze Protection Thermistor
(Indoor)
Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit.
14
Abnormality Gas Piping Thermistor (Indoor)
Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit.
19
Activation of Protection for Indoor Fan Motor
Fan Motor Overheat, Locking.
21
Outdoor Unit
Thermistor
Abnormality High Pressure Thermistor (Outdoor)
Thermistor Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short
Circuit.
22
Abnormality Outdoor Air Thermistor
23
Abnormality Discharge Pipe Thermistor (Outdoor)
24
Abnormality Heat Exchanger Liquid Pipe
Thermistor (Outdoor)
29
Abnormality Low Pressure Thermistor (Outdoor)
31
System
Incorrect Capacity Setting of Outdoor and Indoor
Unit
Incorrect Capacity Code Setting of Combination; Excessive or Insufficient
Indoor Unit Total Capacity Code (outside of 80~120%)
35
Incorrect Setting of Indoor Unit No.
Duplication of Indoor Unit No. In Same Ref. Gr., or The Connection Unit
Number Exceeds the Maximum Number of Combination.
38
Outdoor Unit
Abnormality of Picking Up Circuit for Protection
(Outdoor)
Failure of Protection Detecting Device (Incorrect Wiring of Outdoor PCB)
43
Pressure
Activation of Low Pressure Decrease Protection
Device
Defective Compressor (Failure of Compressor of Inverter, Loose Power
Supply Connection)
44
Activation of Low Pressure Increase Protection
Device
Overload at Cooling, High Temperature at Expansion Valve Locking
(Loose Connector)
45
Activation of High Pressure Increase Protection
Device
Overload Operation (Clogging, Short-Pass), Pipe Clogging, Excessive
Refrigerant, Inert Gas Mixing.
47
Activation of Low Pressure Decrease Protection
Device (Vacuum Operation Protection)
Insufficient Refrigerant, Pipe Clogging, Expansion Valve Locking at Open
Position (Loose Connector).
48
Outdoor Unit
Activation of Inverter Overcurrent Protection
Device
Overload Operation, Compressor Failure.
51
Inverter
Abnormality Inverter Current Sensor
Current Sensor Failure.
53
IPM Protection Activation
Driver IC Error Signal Detection (Protection for Overcurrent, Low Voltage)
54
Activation of Inverter Fin Thermistor Protection
Abnormality Fin Thermistor, Heat Exchanger Clogging, Fan Motor
Failure.
55
Inverter Failure
Inverter PCB Failure
57
Outdoor Unit
Activation of Outdoor Fan Controller Protection
Abnormality Fan Controller Protection (Overcurrent), Fin Overheat
EE
Compressor
Compressor Protection Alarm
Compressor Occurred Three Times of Abnormality within 6 Hour.
b1
Wiring
Incorrect Outdoor Unit Address Number or Unit
Number Setting
Over 64 Number Is Set for Address or Refrigerant Cycle.
b5
Number of Indoor Units Connected Error.
Connection of Non-H-LINK-ⅡIndoor Unit More Than 17 Units.

19
1- =
Vm
V
Test Run and Maintenance Record
MODEL:
CUSTOMER'S NAME AND ADDRESS:
SERIAL. No.
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: DB /WB ℃ ,
DB /WB ℃,
DB /WB ℃,
DB /WB ℃,
Inlet: No. 5 DB /WB ℃ ,
No. 6 DB /WB ℃,
No. 7 DB /WB ℃,
No. 8 DB /WB ℃,
Outlet: DB /WB ℃ ,
DB /WB ℃,
DB /WB ℃,
DB /WB ℃,
6. Check Outdoor Ambient Temperature
Inlet: DB ℃,
WB ℃
Outlet : DB ℃,
WB ℃
7. Check Refrigerant Temperature: Operating Mode (Cool)
Discharge Gas Temperature:
Td= ℃
Liquid Pipe Temperature:
Te= ℃
8. Check Pressure
Discharge Pressure:
Pd= MPa
Suction Pressure:
Ps= MPa
9. Check Voltage
Rated Voltage:
V
Operating Voltage:
L1-L2V
L1-L3V
L2-L3V
Starting Voltage:
V
Phase Imbalance:
10. Check Compressor Input Running Current
Input:
kW
Running Current: A
A
11. Is the refrigerant charge adequate?
12. Do the operation control devices operate correctly?
13. Do the safety devices operate correctly?
14. Has the unit been checked for refrigerant leakage?
15. Is the unit clean inside and outside?
16. Are all cabinet panels fixed?
17. Are all cabinet panels free from rattles?
18. Is the filter clean?
19. Is the heat exchanger clean?
20. Are the stop valves open?
21. Does the drain water flow smoothly from the drain pipe?

20
66MP1572-A1
Printed in Philippines