Mitsubishi Electric CITY MULTI PQHY-P-ZLMU-A1 Manuel D'installation page 26

6
7
Switch
No.
Operation
Switch
No.
Operation
Switch
No.
Operation
The relay is closed while the compressor is in operation.
The relay is closed when cooling or heating operation
Switch
No. 1 2 3
0 1 0
1 0 1
1 0 1
9. Refrigerant piping installation
branched sections are brazed.
Warning:
Do not use refrigerant other than the type indicated in the manuals
provided with the unit and on the nameplate.
Always use extreme care to prevent the refrigerant gas from leaking while
from any source, such as a gas stove, it breaks down and generates
a poisonous gas which can cause gas poisoning. Never weld in an
unventilated room. Always conduct an inspection for gas leakage after
installation of the refrigerant piping has been completed.
26
5 7 10
1 0 1 0 0 1
0 0 0 0 1 1
0 1 0 0 1 1
8
heat source unit.
1. Power on the pump, motor valve, and unit.
controller.
9
allowable range.
Ensure that circulating water temperature is within the allowable range.
in the system.
[Fig. 8.5.1] (P.4)
A
Heat source unit
C 1
Tuning valve
E
1
Flow switch
G
Power cable
I
Pump interlock
K
Opening command
1
1
1
9.1. Caution
pipe thickness when selecting pipes.
1
system.
2
clean with a dry inert gas.
3
piping during installation.
4
bending radii as big as possible.
5
Indoor twinning pipe kit model
Line branch
Less than 30 in total
Total heat source model
B
1
Motor valve
D 1
F
Water pipe
H
Signal cable
J
Operation ON signal
L
2
Total indoor model
Total heat source model