Carrier Heat Pump 38VYX110 User Manual

38VYX110/38VYX130  
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INSTALLATION MANUAL  
 
38VYX110/38VYX130  
General information  
Perform installation work properly according to the Installation  
Manual.  
Inappropriate installation may result in water leakage, electric  
shock or fire.  
When the air conditioner is installed in a small room, provide  
appropriate measures to ensure that the concentration of  
refrigerant leakage occurred in the room does not exceed the  
critical level.  
Install the air conditioner securely in a location where the base  
can sustain the weight adequately.  
Perform the specified installation work to guard against an  
earthquake.  
If the air conditioner is not installed correctly, accidents may occur  
due to the falling unit.  
If refrigerant gas has leaked during the installation work, ventilate  
the room immediately.  
Precautions for safety  
The unit must be installed according to the national plant-  
engineering standards.  
Read this PRECAUTIONS FOR SAFETYcarefully before  
Installation.  
The precautions described below include the important items  
regarding safety. Observe them without fail.  
After the installation work, perform a trial operation to check for  
any problem.  
Follow the Owners Manual to explain how to use and maintain the  
unit to the customer.  
Turn off the main power supply switch (or breaker) before the unit  
maintenance.  
Ask the customer to keep the Installation Manual together with the  
Owners Manual.  
If the leaked refrigerant gas comes in contact with fire, noxious  
gas may generate.  
CAUTION:  
This air conditioner adopts the new HFC refrigerant (R410A)  
which does not destroy ozone layer.  
The characteristics of R410A refrigerant are ; easy to absorb  
water, oxidizing membrane or oil, and its pressure is approx. 1.6  
times higher than that of refrigerant R22.  
Accompanied with the new refrigerant, refrigerating oil has also  
been changed.  
Therefore, during installation work, be sure that water, dust,  
former refrigerant, or refrigerating oil does not enter the  
refrigerating cycle.  
After the installation work, confirm that refrigerant gas does not  
leak. If refrigerant gas leaks into the room and flows near a fire  
source, such as a cooking range, noxious gas might generate.  
Electrical work must be performed by a qualified electrician in  
accordance with the Installation Manual.  
Make sure the air conditioner uses an exclusive power supply. An  
insufficient power supply capacity or inappropriate installation may  
cause fire.  
Use the specified cables for wiring and connect them firmly to  
the terminals.  
To prevent charging an incorrect refrigerant and refrigerating oil,  
the sizes of connecting sections of charging port of the main unit  
and installation tools are charged from those for the conventional  
refrigerant. Accordingly the exclusive tools are required for the  
new refrigerant (R410A).  
To prevent external forces applied to the terminals from affecting  
the terminals.  
Be sure to provide grounding. Do not connect ground wires to gas  
pipes, water pipes, lightning rods or ground wires for telephone  
cables.  
Connect indoor and outdoor units with field-supplied copper pipes  
by means of flare connections. Use insulated seamless  
refrigeration grade pipe only, (Cu DHP type according to  
ISO1337), degreased and deoxidized, suitable for operating  
pressures of at least 4200 kPa and for burst pressure of at least  
20700 kPa. Under no circumstances must sanitary type copper  
pipe be used.  
Conform to the regulations of the local electric company when  
wiring the power supply.  
Inappropriate grounding may cause electric shock.  
Do not install the air conditioner in a location subject to a risk of  
exposure to a combustible gas.  
If a combustible gas leaks, and stays around the unit, a fire may  
occur.  
Moreover, do not use the existing piping because there are  
problems with pressure-resistance force and impurity in it.  
Check that the impedance of the mains power supply is in  
conformance with the unit power input indicated in the  
electric data (EN 61000-3-11).  
Required tools for installation work  
This unit complies with low-voltage (EEC/73/23) and electro-  
magnetic compatibility (EEC/89/336) directives.  
This appliance must be connected to the main power supply by  
means of a switch with a contact separation of at least 3 mm.  
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Philips screw driver  
Cutter drill (65 mm)  
Spanner  
Pipe cutter  
Cutter  
Reamer  
Gas leak detector  
Meter  
Thermometer  
Volt-ohm-milliammeter  
Electro circuit tester  
Hexagonal wrench  
Flare tool  
The installation fuse (25A D type  
) must be used for  
the power supply line of this conditioner.  
WARNING:  
Ask an authorized dealer or qualified installation professional to  
install/maintain the air conditioner. Inappropriate installation may  
result in water leakage, electric shock or fire.  
Turn off the main power supply switch or breaker before attempting  
any electrical work. Make sure all power switches are off. Failure  
to do so may cause electric shock.  
Connect the connecting cable correctly. If the connecting cable is  
connected in a wrong way, electric parts may be damaged.  
When moving the air conditioner for the installation into another  
place, be very careful not to enter any gaseous matter other than  
the specified refrigerant into the refrigeration cycle.  
Pipe bender  
Water level  
Metal saw  
R410A (Special requirement)  
If air or any other gas is mixed in the refrigerant, the gas pressure  
in the refrigeration cycle becomes abnormally high and it may  
cause pipe burst and injuries on persons.  
Do not modify this unit by removing any of the safety guards or by  
by-passing any of the safety interlock switches.  
Exposure of unit to water or other moisture before installation may  
cause a short-circuit of electrical parts. Do not store it in a wet  
basement or expose to rain or water.  
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Manometer for pressure measuring  
(Charge hose : R410A special requirement)  
Vacuum pump  
(Charge hose : R410A special requirement)  
Torque wrench:  
1/4 (17 mm) 16 Nm (1,6 kgfm)  
3/8 (22 mm) 42 Nm (4,2 kgfm)  
1/2 (26 mm) 55 Nm (5,5 kgfm)  
5/8 (15,9 mm) 120 Nm (12,0 kgfm)  
Copper pipe gauge adjusting projection margin  
Vacuum pump adapter  
After unpacking the unit, examine it carefully for possible damage  
.
Do not install in a place that might increase the vibration of the unit.  
To avoid personal injury (with sharp edges), be careful when  
handling parts.  
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GB - 2  
 
38VYX110/38VYX130  
Accessory and refrigerant  
E N G L I S H  
Table II: Accessory and Installation Parts  
Outdoor unit  
Drain nipple  
Installation manual x 1  
Waterproof rubber cap  
Use copper pipe with 1.0 mm or more thickness for Ø 15,87 mm.  
Refrigerant Piping  
Flare nut and flare works are also different from those of the  
conventional refrigerant.  
Take out the flare nut attached to the main unit of the air  
conditioner, and use it.  
Piping kit used for the conventional refrigerant cannot be used.  
Use copper pipe with 0.8 mm or more thickness for Ø 9,52  
mm.  
Table III: Length of refrigerant  
Length of refrigerant pipe connected  
to indoor/outdoor units.  
Refrigerant addition  
.
20 m o shorter: for all units  
Do not add refrigerant at installation site  
Add 40 g of refrigerant for every meter of pipe beyond 20 m  
(1)  
from 20 m to 50 m  
NOTES: Caution at addition of refrigerant  
(1)  
When the total length of refrigerant pipe exceeds 20m, add 40g/m. The pipe total maximum length is 50 m. (Max. amount of additional refrigerant is  
1200g.). Charge the refrigerant accurately. Overcharge may cause a serious trouble of compressor..  
Table IV: Operating limits (1)  
Cooling (2)  
outdoor temperature 43°C  
Maximum conditions  
Minimum conditions  
indoor temperature 32°C d.b.; 23°C w.b.  
outdoor temperature -5°C  
indoor temperature 21°C d.b.; 15°C w.b.  
outdoor temperature 24°C d.b.; 18°C w.b.  
indoor temperature 27°C d.b.  
Heating (2)  
Maximum conditions  
Minimum conditions  
outdoor temperature 15°C d.b.  
Mains power supply  
Nominal single-phase voltage  
Operating voltage limits  
220÷240V ~ 50Hz  
min. 198V max. 264V  
WARNING:  
Notes: 1. Data referred to the outdoor unit only.  
During heat pump operation unit will undergo several defrost cycles to  
eliminate ice that might possibly collect on the outdoor unit in very low  
ambient temperatures.  
2. According to prEN14511.  
In these cycles, fan speed will automatically reduce and cannot be  
varied until defrost cycle is completed.  
d.b. - dry bulb;  
w.b. - wet bulb  
Selection of installation  
Air purge  
Electrical cabling  
For air purge, use a vacuum pump.  
Be sure to fix the power cables and indoor/outdoor connecting  
cables with clamps so that they do not contact with the cabinet,  
etc.  
Do not use refrigerant charged in the outdoor unit for air purge.  
(The refrigerant for air purge is not contained in the outdoor unit.)  
GB - 3  
 
38VYX110/38VYX130  
Selection of installation  
Installation Place  
Knockout procedure  
A place which provides a specified space around the outdoor unit.  
A place where the operation noise and discharged air are not  
given to your neighbors.  
A place that is not exposed to a strong wind.  
A place that does not block a passage.  
The indoor/outdoor connecting pipes can be connected to 4  
directions.  
Take off the knockout part of the pipe cover in which pipes or  
wires pass through the base plate.  
As shown in the figure, do not remove the pipe cover from the  
cabinet so that the knockout hole can be easily punched.  
To knock out, punch the 3 connected parts with a screwdriver  
and remove the pipe cover by hand.  
After marking the knockout hole, remove the burr and mount  
the attached protective bush and guard material for pass-through  
part in order to protect pipes and wires.  
When the outdoor unit is installed in an elevated position, be sure  
to secure its feet.  
There must be sufficient space for carrying in the unit.  
A place where the drain water does not make any problem.  
If the unit is installed in areas where heavy snowfalls may occur, it  
is necessary to raise its level at least 200 mm above the usual  
snow level.  
After connecting the pipes, be sure to mount the pipe cover.  
The pipe cover is easily mounted by cutting off the slit at the  
lower part of the cover.  
The support must be suitable for the unit weight.  
CAUTION:  
Install the outdoor unit at a place where discharge air is not blocked.  
When an outdoor unit is installed in a place that is always exposed  
to a strong wind like a coast or on a high storey of a building,  
secure a normal fan operation by using a duct or a wind shield  
When installing the outdoor unit in a place that is constantly  
exposed to a strong wind such as the upper stairs or rooftop of a  
building, apply the windproof measures referring to the following  
examples.  
Install the unit so that its discharge port faces the wall of the  
building. Keep a distance 500 mm or more between the unit and  
the wall surface.  
Supposing the wind direction during the operation season of the  
air conditioner, install the unit so that the discharge port is set at  
right angle to the wind direction.  
Installation in the following places may result in some troubles. Do  
not install the unit in such places below.  
How to remove the front panel  
1. Remove screws of the front panel.  
2. Pull the front panel downward.  
A place full of machine oil.  
A place full of sulphuric gas.  
A place where high-frequency radio waves are likely to be  
generated as from audio equipment, welders, and medical  
equipment.  
Removing the front panel, the electric parts appear at the front side.  
The power supply cables can be inserted into the pipe holes.  
Enlarge the pipe holes if they are too small.  
The power supply cable and the indoor/outdoor connecting cable  
must be fixed by means of the strip on the connection fixing  
bracket so that they are not in contact with the compressor and  
the hot pipes.  
To ensure good tensile strength, the electric cables must be  
fastened using the cable-holder on the plate.  
Strong wind  
Cover knockout for pipe connection  
Strip  
Rear direction  
Pipe cover  
Side direction  
Electric parts box  
Fixing plate  
Piping hole  
Down direction  
Front direction  
Cable-holder for  
electric cables  
Front panel  
GB - 4  
 
38VYX110/38VYX130  
Refrigerant piping  
E N G L I S H  
Align the centres of the connecting pipes and tighten the flare nut  
as strong as possible with your fingers.  
Then fix the nut with a spanner and tighten it with torque wrench as  
shown in the figure.  
Flaring  
1. Cut the pipe with a pipe cutter.  
90˚  
C
D
Obliquity  
Roughness  
Warp  
Half union or packed valve  
Flare nut  
Internally threaded side  
Externally threaded side  
2. Insert a flare nut into the pipe, and flare the pipe.  
C Fix with spanner.  
D Tighten with torque wrench.  
As the flaring sizes of R410A differ from those of refrigerant  
R22, the flare tools newly manufactured for R410A are  
recommended.  
As shown in the figure, use two spanners to unscrew or tighten  
the valve flare nut, at gas side.  
If using a single spanner, the nut cannot be tightened with  
necessary tightening torque.  
On the contrary, use a single spanner to loosen or tighten the  
flare nut of the valve at liquid side.  
TableV: Pipe outer diameter  
Outer dia. of copper pipe  
A +-00,4 mm  
R410A  
13,2  
R22  
13,0  
19,4  
9,52  
15,87  
19,7  
In case of flaring for R410A with the conventional flare tool,  
pull it out approx. 0.5 mm more than that of R22 to adjust to  
the specified flare size.  
F
Cover  
Piping valve  
E
Flare nut  
E Tightened  
F Loosened  
The copper pipe gauge is useful for adjusting projection  
margin size.  
B
REQUIREMENT:  
A
1. Do not put the spanner on the cap. The valve may be broken.  
2. If applying excessive torque, the nut may be broken  
according to some installation conditions.  
After the installation work, be sure to check gas leak of  
connecting part of the pipes with nitrogen.  
Cover  
Pressure of R410A is higher than that of R22 (Approx. 1.6  
times).  
Therefore, using a torque wrench, tighten the flare pipe  
connecting sections which connect the indoor/outdoor units at  
the specified tightening torque.  
Incomplete connections may cause not only a gas leak, but  
also a trouble of the refrigeration cycle.  
Flare at indoor  
unit side  
Flare at outdoor  
IMPORTANT:  
unit side  
Do not apply refrigerating machine oil to the flared surface.  
GB - 5  
 
38VYX110/38VYX130  
Minimum clearances  
Obstacle at rear side  
Upper side is free  
Single unit installation  
Obstacles at both right and left sides.  
150  
300  
or more  
or more  
The height of the obstacle should be lower than the height of the outdoor unit.  
Serial installation of two or more units  
300  
or more  
300  
or more  
150  
or more  
The height of the obstacle should be lower than the height of the outdoor unit.  
300  
or more  
Obstacle at rear side  
Obstacle also at the upper side  
150  
or more  
Obstacle at front side  
Upper side is free  
Single unit installation  
Obstacles at both right and left sides.  
Obstacle at front side  
Obstacle also at the upper side  
1000  
or more  
GB - 6  
 
38VYX110/38VYX130  
Minimum clearances  
E N G L I S H  
Obstacles at both front and rear sides  
Standard installation  
Open the upper side and both right and left sides.  
The height of obstacle at both front and rear side, should be lower than the height of the outdoor unit.  
Serial installation of two or more units  
Single unit installation  
300  
300  
or more  
or more  
Serial installation at front and rear sides  
Standard installation  
Open the upper side and both right and left sides.  
The height of obstacle at both front and rear side, should be lower than the height of the outdoor unit.  
300  
or more  
1000  
or more  
1500  
or more  
2000  
or more  
200  
or more  
Installation  
38 VYX 110-130  
600  
150  
430  
150  
Drain  
hole  
Knockout  
hole  
Drain nipple  
mounting hole  
15 mm or less  
Set the out margin of the anchor bolt to 15mm or less..  
• According to the following base diagram, fix the base firmly with  
the anchor bolts.  
(Anchor bolt, nut: M10 x 2 pairs)  
• Before installation, check strength and horizontality of the base so  
that abnormal sound does not generate.  
GB - 7  
 
38VYX110/38VYX130  
Installation  
A
Knockout hole  
Waterproof rubber cap  
Drain nipple  
Drain nipple  
Waterproof rubber cap  
A
Open  
When there is a possibility of freezing of drain at the cold  
district or a snowfall area, be careful for drainage ability of  
drain.  
In case of draining through the drain hose, attach the following  
drain nipple and the waterproof rubber cap, and use the drain  
hose (Inner diam.: 16mm) sold on the market.  
The drainage ability increases when a knockout hole on the  
base plate is opened. (Open the knockout hole to outside  
using a screwdriver, etc.)  
And also seal the screws securely with silicone material, etc. so  
that water does not drop down. Some conditions may cause  
dewing or dripping of water.  
TableVI: Optional Installation Parts  
(local procure)  
Parts name  
Q’ty  
Refrigerant piping  
Liquid side: ø 6,35 mm o ø 9,52 mm  
Gas side: ø 12,7 mm o ø 15,9 mm  
CAUTION:  
A
Each one  
IMPORTANT FOR POINTS BELOW FOR PIPING WORK  
1. Keep dust and moisture away from inside the connecting  
pipes.  
2. Tightly connect the connection between pipes and the unit.  
3. Evacuate the air in the connecting pipes using VACUUM  
PUMP.  
Pipe insulating material  
(polyethylene foam, 6 mm thick)  
B
C
1
Putty, PVC tapes  
Each one  
4. Check gas leak at connected points.  
Table VII: Piping connection  
Capacity rank  
Liquid piping  
Gas piping  
Outer diameter  
Thickness  
0,8  
Outer diameter  
Thickness  
1,0  
38 VYX 110-130  
ø 9,52  
ø 15,9  
Table VIII: Air Purge  
Max. connecting  
pipe length (m)  
Height difference (m)  
Hexagonal  
wrench size  
Capacity rank  
Outdoor unit higher than indoor unit Outdoor unit lower than indoor unit  
38 VYX 110-130  
50  
30  
15  
4 mm  
- This air conditioner can be installed up to the connecting pipe length and height difference in the following table.  
GB - 8  
 
38VYX110/38VYX130  
Evacuating  
E N G L I S H  
Vacuum pump  
Air Purge  
As shown in the right figure, connect the charge hose after the  
manifold valves are closed completely.  
With respect to the preservation of terrestrial environment,  
adopt Vacuum pumpfor air purge (Evacuate air in the  
connecting pipes) when installing the unit.  
Attach the connecting port of the charge hose with a projection to  
push the valve core (setting pin) to the charge port of the set.  
Open handle Low fully.  
Turn ON the vacuum pump.(*1)  
Do not discharge the refrigerant gas to the atmosphere to  
preserve the terrestrial environment.  
Loosen the flare nut of the packed valve (Gas side) a little to  
check the air passes through.(*2)  
Tighten the flare nut again.  
Use a vacuum pump to discharge the air (nitrogen, etc.)  
remained in the set. If the air remains, the capacity may  
decrease.  
Execute vacuuming until the compound pressure gauge indicates  
101kPa (76cmHg). (*1)  
Close handle Low completely.  
Turn OFF the vacuum pump.  
Leave the vacuum pump as it is for 1 or 2 minutes, and check the  
indicator of the compound pressure gauge does not return.  
Open fully the valve stem or the valve handle.  
(First, at liquid side, then gas side)  
Disconnect the charge hose from the charge port.  
Tighten valve and caps of the charge port surely.  
For the vacuum pump, be sure to use one with backflow  
preventer so that the oil in the pump does not backflow into the  
pipe of the air conditioner when the pump stops.  
(If oil in the vacuum pump is put in an air conditioner including  
R410A, it may cause trouble on the refrigeration cycle.)  
38VYX110 - 38VYX130  
Compound pressure gauge  
Pressure gauge  
Manifold valve  
Handle Hi (Keep fully closed)  
Charge hose (For R410A only)  
Vacuum pump adapter for counter-flow prevention  
(For R410A only)  
Charge hose (For R410A only)  
Packed valve (Gas side)  
Vacuum pump  
Service port (Valve core (Setting pin))  
Handle Lo  
-101kPa (-76cmHg)  
Valve unit  
Flare nut  
Valve rod  
Charge port  
Push in handle.  
Handle  
Pull out the handle and using cutting pliers, etc. turn it  
counterclockwise by 90˚. (Open fully)  
Close  
Open  
Handle position  
Flexible charge pipe  
(only for R410A)  
Vacuum pump adapter for  
counter-flow prevention  
(only for R410A)  
Flexible charge pipe  
(only for R410A)  
CLOSED  
completely  
OPENED  
fully  
*1. Use the vacuum pump, vacuum pump adapters, and gauge manifold referring to the manuals attached to each tool before using them. For the vacuum  
pump, check oil is filled up to the specified line of the oil gauge.  
*2. While the air is purged, check again that the connecting port of charge hose, which has a projection to push the valve core, is firmly connected to the  
charge port.  
GB - 9  
 
38VYX110/38VYX130  
Evacuating  
Open the valve stem or the handle until it strikes the stopper.  
It is unnecessary to apply further force.  
Valve handling precautions  
Size  
ø 9,52  
33 a 42 Nm (3,3 a 4,2 kgfm)  
Securely tighten the cap with a torque wrench.  
Cap tightening torque  
ø 15,87  
20 a 25 Nm (2,0 a 2,5 kgfm)  
14 a 18 Nm (1,4 a 1,8 kgfm)  
Service connection  
Electrical connections  
Make refrigerant connections before electrical  
connections.  
Terminal block  
When disconnecting, disconnect electrical connections before  
refrigerant connections.  
IMPORTANT:  
Make ground connection prior to any other electrical  
connections.  
Model  
38VYX110  
38VYX130  
220÷240 V  
Single phase 50Hz  
Power supply  
Maximum running current  
22 A 22,8A  
Installation  
fuse rating  
25 A (type D  
)
H07 RN-F (245 IEC 57)  
2,5 mm2  
Power cable  
Terminal block power supply  
Power cable  
To the indoor unit  
Earth  
All field electrical connections are the responsibility of the  
installer.  
Connecting cable  
WARNING:  
Wrong wiring may cause a burn-out to some electrical parts.  
Be sure to use the cord clamps attached to the product.  
Do not damage or scratch the conductive core and inner  
insulator of power and inter-connecting cables when peeling  
them.  
Power cable and connecting cable  
Be sure to comply with local regulations of the cable from  
outdoor unit to indoor unit.  
(wire size and cabling method etc.)  
1 2 3  
10  
L
N
10  
10  
Use the power and Inter-connecting cables with specified  
thickness, specified type and protective devices required.  
Connecting  
cable  
Power cable  
Ground  
connector  
40  
30  
30  
1. Connect the connecting cable to the terminal as identified with  
their respective numbers on the terminal block of indoor and  
outdoor unit.  
(mm)  
The indoor - outdoor unit interconnecting wires must be A07 RN-F  
type (245 IEC 57) or higher, with synthetic rubber insulation with  
Neoprene coating, according to EN 60335-2-40 codes.  
The installation fuse (25A D type  
the power supply line of this air conditioner.  
) must be used for  
The mains supply connecting cable for 38VYX units, must be H07 RN-F  
type (245 IEC 57) or higher, with synthetic rubber insulation with  
Neoprene coating, according to EN 60335-2-40 codes.  
Refer to the indoor unit installation manual for sizing of the  
power supply wires.  
Incorrect/incomplete wiring might cause an electrical fire or  
smoke.  
Prepare the exclusive power supply for the air conditioner.  
2. For inter connecting cable, do not use a wire jointed to another  
on the way.  
Ensure that mains supply connection is made through a  
switch that disconnects all poles, with contact gap of a least 3  
mm.  
Use wires long enough to cover the entire length.  
GB - 10  
 
38VYX110/38VYX130  
Final installation checks  
E N G L I S H  
Check gas leakage at the flare nut connections, valve stem  
cap connections and service port cap fittings with a leak  
detector or soap water.  
Check and Test Operation  
For R410A, use the leak detector exclusively manufactured for  
HFC refrigerant (R410A, R134a, etc.).  
Useful Functions  
The conventional leak detector for HCFC refrigerant (R22,  
etc.) cannot be used because its sensitivity for HFC refrigerant  
lowers to approx. 1/40.  
Self-Diagnosis by LED Indication  
Troubles of the outdoor unit can be diagnosed by LED indica-  
tions on the cycle control P.C. board of the outdoor unit. Utilize  
them for various checks.  
For the check by remote controller of the indoor unit, refer to the  
Installation Manual of the outdoor unit.  
Before a check, confirm each bit of the DIP switch is set to OFF  
position.  
Pressure of R410A is approx. 1.6 times higher than that of  
R22.  
If installation work is incompletely finished, a gas leakage may  
occur when pressure rises during operation.  
Therefore, be sure to test the piping connections for leakage.  
LED indication and code checking  
LED indication  
Cycle control  
P.C. board  
Cause  
LED indication  
D800 D801  
D802 D803  
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Heat exchanger sensor (TE) error  
Suction sensor (TS) error  
Hot gas discharge sensor (TD) error  
High-pressure protection error  
Outdoor air temperature sensor error (TO)  
Outdoor motorised fan error DC  
Communication error between IPDU (Abnormal stop)  
High-pressure release operation  
Discharge temp. error: hot gas is too high  
EEPROM error  
D800 O: Red  
D801 O: Yellow  
D802 O: Yellow  
D803 O: Yellow  
«: Flashing  
Ȝ: Off  
Ț: On  
Communication error between IPDU (Normal stop)  
G-Tr short-circuit protection  
Detect circuit error  
Ȝ
«
«
Current sensor error  
Ȝ
«
Ȝ
Ȝ
Comp. lock error  
«
Comp. break down  
GB - 11  
 
38VYX110/38VYX130  
Final installation checks  
diameter of the outdoor unit control valve (3 way valve) has been  
changed. (1/2 UNF 20 threads per inch)  
• In order to increase the pressure resisting strength of the  
refrigerant piping flare processing diameter and size of opposite  
side of flare nuts has been changed. (for copper pipes with  
nominal dimensions 1/2 and 5/8)  
Installation/Servicing Tools  
Changes in the product and components  
In the case of an air conditioner using R410A, in order to prevent  
any other refrigerant from being charged accidentally, service port  
Table: New tools for R410A  
New tools for R410A  
Applicable to R22 model  
Changes  
As pressure is high, it is impossible to measure by means of conventional  
gauge. In order to prevent any other refrigerant from being charged, each  
port diameter is changed.  
Gauge manifold  
x
In order to increase pressure resisting strength,  
Charge hose  
hose materials and port size are changed (to 1/2 UNF 20 threads per  
inch). When purchasing a charge hose, be sure to check the port size.  
As pressure is high and gasification speed is fast, it is difficult  
to read the indicated value by means of charging cylinder, as air bubbles  
occur.  
Electronic balance  
o
for refrigerant charging  
Torque wrench  
(nominal diam. 1/2, 5/8)  
The size of opposite sides of flare nuts have been increased. Incidentally,  
a common wrench is used for nominal diameters 1/4 and 3/8.  
x
o
Flare tool  
By increasing the clamp bar’s receiving hole, strength of spring in the tool  
has been improved.  
(clutch type)  
Gauge for projection  
adjustment  
Used when flare is made with using conventional flare tool.  
-
-
Connected to the conventional vacuum pump. It is necessary to use an  
adapter to prevent vacuum pump oil from flowing back to the charge hose.  
The charge hose connecting part has two ports-one for conventional  
refrigerant (7/16 UNF 20 threads per inch) and one for R410A.  
If the vacuum pump oil (mineral) mixes with R410A a sludge may occur  
and damage the equipment.  
Vacuum pump  
adapter  
o
Gas leakage detector  
x
Exclusive for HFC refrigerant.  
• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the U,S.’s ARI specified rose  
color (ARI color code: PMS 507).  
• Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to the charge hose’s port  
size.  
GB - 12  
 
38VYX 110-130  
Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. 039/3636.1  
The manufacturer reserves the right to change any product specifications without notice.  
November, 2003  
Printed in Japan  
 

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