Mitsubishi Electric QAHV-N560YA-HPB, Service Handbook

Page: 168 / 176

[
IX
Troubleshooting ]
- 161 -
HWE1517A GB
(3) Setting up the cleaning water circuit
6
1
4
3
2
Hot water supply port
(to hot water tank)
Heat pump unit
Gas cooler
M
5
Water inlet
Figure 2: Valves to be closed and connections of cleaning water circuit
Figure 2 symbol explanation
1
Connection to cleaning water circuit outlet
2
Connection to cleaning water circuit inlet
3
Hot water supply valve
4
Water inlet valve
5
Flow rate control valve
6
Pump
Set up the cleaning water circuit by removing built-in components from the unit as shown on the next page.
Shut off the power to the unit, close the valves at the hot water supply port
3
and water inlet
4
, and then connect the
cleaning water circuit to the unit.
Cleaning water circuit is connected to the unit at the hot water supply port on the back of Heat pump unit
1
and at the
gas cooler inlet in the front of the Heat pump unit
2
as shown in Figure 2.
Cleaning solution flows through the pipe indicated as
2
, gas cooler, and then the pipe indicated as
1
in Figure 2.
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