60
CUTTING AND FLARING THE PIPING
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
12.4.3 EVACUATION OF THE EQUIPMENT
WHEN INSTALLING AN AIR-TO-WATER HEATPUMP, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR
UNIT AND PIPES in the following procedure.
1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
o
Be sure to connect the end of the charging hose with the push pin to the service port.
2 Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and
vacuum pump adaptor.
3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.
4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the
gauge does not move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5 Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6 Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench.
7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4 mm).
8 Mount valve caps onto the 2-way valve and the 3-way valve.
o
Be sure to check for gas leakage.
CAUTION
If gauge needle does not move from 0cmHg (0MPa) to –76cmHg (–0.1MPa), in step above take the following measure:
If the leak stops when the piping connections are tightened further, continue working from step .
If the leak does not stop when the connections are retightened, repair the location of leak.
Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant,
it may cause frostbite.
Summary of Contents for (WH-UD12CE5-A-1
Page 17: ...17 4 Location of Controls and Components 4 1 Indoor Unit 4 1 1 Location of Control ...
Page 18: ...18 ...
Page 19: ...19 ...
Page 20: ...20 4 1 2 Weekly Timer Setting ...
Page 21: ...21 4 1 3 Setting Up The Special Functions ...
Page 22: ...22 4 1 4 Main Components ...
Page 23: ...23 4 2 Outdoor Unit ...
Page 24: ...24 5 Dimensions 5 1 Indoor Unit ...
Page 25: ...25 5 2 Outdoor Unit 5 2 1 WH UD07CE5 A WH UD09CE5 A WH UD07CE5 A 1 WH UD09CE5 A 1 ...
Page 26: ...26 5 2 2 WH UD12CE5 A WH UD14CE5 A WH UD16CE5 A WH UD12CE5 A 1 WH UD14CE5 A 1 WH UD16CE5 A 1 ...
Page 28: ...28 7 Block Diagram 7 1 WH UD07CE5 A WH UD09CE5 A WH UD07CE5 A 1 WH UD09CE5 A 1 ...
Page 29: ...29 7 2 WH UD12CE5 A WH UD14CE5 A WH UD16CE5 A WH UD12CE5 A 1 WH UD14CE5 A 1 WH UD16CE5 A 1 ...
Page 31: ...31 8 1 2 WH SDF12C6E5 WH SDF14C6E5 WH SDF16C6E5 WH SDF12C6E5 1 WH SDF14C6E5 1 WH SDF16C6E5 1 ...
Page 32: ...32 8 2 Outdoor Unit 8 2 1 WH UD07CE5 A WH UD09CE5 A WH UD07CE5 A 1 WH UD09CE5 A 1 ...
Page 33: ...33 8 2 2 WH UD12CE5 A WH UD14CE5 A WH UD16CE5 A WH UD12CE5 A 1 WH UD14CE5 A 1 WH UD16CE5 A 1 ...
Page 35: ...35 9 1 2 WH SDF12C6E5 WH SDF14C6E5 WH SDF16C6E5 WH SDF12C6E5 1 WH SDF14C6E5 1 WH SDF16C6E5 1 ...
Page 36: ...36 9 2 Outdoor Unit 9 2 1 WH UD07CE5 A WH UD09CE5 A WH UD07CE5 A 1 WH UD09CE5 A 1 ...
Page 37: ...37 9 2 2 WH UD12CE5 A WH UD14CE5 A WH UD16CE5 A WH UD12CE5 A 1 WH UD14CE5 A 1 WH UD16CE5 A 1 ...
Page 38: ...38 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Page 39: ...39 10 1 2 Solar Printed Circuit Board Optional ...
Page 41: ...41 10 2 1 2 Capacitor Printed Circuit Board 10 2 1 3 Noise Filter Printed Circuit Board ...
Page 43: ...43 10 2 2 2 Capacitor Printed Circuit Board 10 2 2 3 Noise Filter Printed Circuit Board ...
Page 65: ...65 ...
Page 71: ...71 ...
Page 72: ...72 ...
Page 82: ...82 ...
Page 131: ...131 18 3 To Remove Pressure Gauge 18 4 To Remove Control Panel ...
Page 132: ...132 18 5 To Remove RCCB 18 6 To Remove Transformer and Electronic Controller Board ...
Page 149: ...149 20 2 WH UD07CE5 A WH UD09CE5 A WH UD07CE5 A 1 WH UD09CE5 A 1 ...
Page 150: ...150 ...
Page 154: ...154 20 3 WH UD12CE5 A WH UD14CE5 A WH UD16CE5 A WH UD12CE5 A 1 WH UD14CE5 A 1 WH UD16CE5 A 1 ...
Page 155: ...155 ...