Pump Interlock; Refrigerant Piping Installation - Mitsubishi Electric City Multi PQHY-P72ZLMU Manuel D'installation

2 Water quality standard
Items
Chloride ion (mg Cl
Standard
items
(mg CaCO
3
Total hardness (mg CaCO
3
Calcium hardness (mg CaCO
3
Ionic silica (mg SiO
2
ence
Ammonium ion (mg NH
items
2
3 Consult with a specialist about water quality control methods and
4 When replacing a previously installed air conditioning device (even when
replacing the unit.

8.4. Pump interlock

circulating through the pipes.
5mA or less to prevent miss detection due to poor connection.

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.
24
Tendency
temperature water system
Recirculating
water Scale
Corrosive
water
30 or less 30 or less
[300 or less] [300 or less]
50 or less 50 or less
50 or less 50 or less
50 or less 50 or less
70 or less 70 or less
50 or less 50 or less
30 or less 30 or less
1.0 or less 0.3 or less
1.0 or less 0.1 or less
not to be not to be
detected detected
0.3 or less 0.1 or less
0.25 or less 0.3 or less
[Fig. 8.4.1] (P.4)
A
[Fig. 8.4.2] (P.4)
circuit pump.
A
Heat source unit
C
X : Relay
FS : Flow switch
MP : Water circuit pump
MCB : Circuit breaker
Terminal
No.
Output Relay contacts output
Operation
is OFF.
The relay closes during compressor operation.
1 2 3 5
1 0 1 0 1
ON.
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
Rated load: 1A
7 10
0 0 1 1 1
Total indoor model
Total heat source model