Installation Manual
EDUS04-906
36
Room Air Conditioners H-Series
Outdoor Unit Installation (2)
*1. If the compound pressure gauge pointer swings back, refrigerant may have water content or a loose pipe
joint may exists. Check all pipe joints and retighten nuts as needed, then repeat steps 2) through 4).
• If using additional refrigerant, perform air purging from the refrigerant
pipes and indoor unit using a vacuum pump, then charge additional
refrigerant.
• Use a hexagonal wrench (3/16 inch (4mm)) to operate the stop valve rod.
• All refrigerant pipe joints should be tightened with a torque wrench at
the specified tightening torque.
5.
Purging air and checking gas leakage.
• When piping work is completed, it is necessary to purge the air and check for gas leakage.
1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3) R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants
may damage the vacuum pump or the unit.
1) Connect projection side of charging hose (which comes from gauge manifold) to gas stop valve’s service port.
2) Fully open gauge manifold’s low-pressure valve (Lo) and completely close its high-pressure valve (Hi).
(High-pressure valve subsequently requires no operation.)
3) Do vacuum pumping and make sure that the compound pressure gauge reads – 29.9inHg (–0.1MPa).
(The vacuum pump should run for at least 10 min.)
4) Close gauge manifold’s low-pressure valve (Lo) and stop vacuum pump.
(Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back.)*1.
5) Remove valve caps from liquid stop valve and gas stop valve.
6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve.
Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods.
After the check is complete, wipe all soapy water off.
7) Disconnect charging hose from gas stop valve’s service port, then fully open liquid and gas stop valves.
(Do not attempt to turn valve rod beyond its stop.)
8) Tighten valve caps and service port cap for the liquid and gas stop valves with a torque wrench at the specified
torques.
WARNING
Compound
pressure gauge
Pressure
meter
High-
pressure
valve
Low-pressure
valve
Vacuum pump
adapter
Vacuum pump
Service port
Gas stop
valve
Valve caps
Liquid stop valve
Charging
hoses
Gauge
manifold
Summary of Contents for Quaternity FTXG09HVJU
Page 1: ...EDUS04 906_a H Series Heat Pump...
Page 44: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 43 Ground terminal...
Page 45: ...Operation Manual EDUS04 906 44 Room Air Conditioners H Series DRY button...
Page 46: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 45...
Page 47: ...Operation Manual EDUS04 906 46 Room Air Conditioners H Series...
Page 48: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 47...
Page 50: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 49...
Page 51: ...Operation Manual EDUS04 906 50 Room Air Conditioners H Series...
Page 52: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 51...
Page 55: ...Operation Manual EDUS04 906 54 Room Air Conditioners H Series...
Page 56: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 55 1 8 F 1 C 3 6 F 2 C...
Page 57: ...Operation Manual EDUS04 906 56 Room Air Conditioners H Series...
Page 58: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 57 COOLING or DRY COOLING mode or...
Page 59: ...Operation Manual EDUS04 906 58 Room Air Conditioners H Series...
Page 60: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 59...
Page 61: ...Operation Manual EDUS04 906 60 Room Air Conditioners H Series...
Page 62: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 61...
Page 63: ...Operation Manual EDUS04 906 62 Room Air Conditioners H Series...
Page 64: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 63...
Page 65: ...Operation Manual EDUS04 906 64 Room Air Conditioners H Series...
Page 66: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 65...
Page 67: ...Operation Manual EDUS04 906 66 Room Air Conditioners H Series...
Page 68: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 67...
Page 69: ...Operation Manual EDUS04 906 68 Room Air Conditioners H Series...
Page 70: ...EDUS04 906 Operation Manual Room Air Conditioners H Series 69 3P226009 1...
Page 79: ...Optional Accessories EDUS04 906 78 Room Air Conditioners H Series...
