![background image](http://html1.mh-extra.com/html/daikin/h-series/h-series_engineering-data_3439235041.webp)
Installation Manual
EDUS04-924A
40
Room Air Conditioners H-Series
Outdoor Unit Installation (3)
*1. Pipe length vs. vacuum pump run time
*2. 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).*1.
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.)*2.
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 caps for the liquid and gas stop valves with a torque wrench at the specified torques.
Pipe length
Up to 49.2ft (15m)
More than 49.2ft (15m)
Run time
Not less than 10 min.
Not less than 15 min.
WARNING
Summary of Contents for H-Series
Page 1: ...EDUS04 924A H Series Cooling Only Heat Pump...
Page 50: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 49...
Page 51: ...Operation Manual Safety Considerations EDUS04 924A 50 Room Air Conditioners H Series...
Page 52: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 51...
Page 53: ...Operation Manual Safety Considerations EDUS04 924A 52 Room Air Conditioners H Series...
Page 54: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 53...
Page 55: ...Operation Manual Safety Considerations EDUS04 924A 54 Room Air Conditioners H Series...
Page 56: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 55...
Page 57: ...Operation Manual Safety Considerations EDUS04 924A 56 Room Air Conditioners H Series...
Page 58: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 57...
Page 59: ...Operation Manual Safety Considerations EDUS04 924A 58 Room Air Conditioners H Series...
Page 60: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 59...
Page 61: ...Operation Manual Safety Considerations EDUS04 924A 60 Room Air Conditioners H Series...
Page 63: ...Operation Manual Safety Considerations EDUS04 924A 62 Room Air Conditioners H Series...
Page 64: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 63...
Page 65: ...Operation Manual Safety Considerations EDUS04 924A 64 Room Air Conditioners H Series...
Page 66: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 65...
Page 67: ...Operation Manual Safety Considerations EDUS04 924A 66 Room Air Conditioners H Series...
Page 68: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 67...
Page 69: ...Operation Manual Safety Considerations EDUS04 924A 68 Room Air Conditioners H Series...
Page 70: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 69...
Page 71: ...Operation Manual Safety Considerations EDUS04 924A 70 Room Air Conditioners H Series...
Page 72: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 71...
Page 73: ...Operation Manual Safety Considerations EDUS04 924A 72 Room Air Conditioners H Series...
Page 74: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 73...
Page 75: ...Operation Manual Safety Considerations EDUS04 924A 74 Room Air Conditioners H Series...
Page 76: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 75...
Page 77: ...Operation Manual Safety Considerations EDUS04 924A 76 Room Air Conditioners H Series...
Page 78: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 77...
Page 79: ...Operation Manual Safety Considerations EDUS04 924A 78 Room Air Conditioners H Series...
Page 80: ...EDUS04 924A Operation Manual Safety Considerations Room Air Conditioners H Series 79...
Page 100: ...EDUS04 924A Optional Accessories Room Air Conditioners H Series 99...
Page 101: ...Optional Accessories EDUS04 924A 100 Room Air Conditioners H Series 3P248024 2...