Mitsubishi Electric CITY MULTI PQHY-P-ZLMU-A1 Manuel D'installation page 25

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.
detection due to poor connection.
[Fig. 8.4.1] (P.4)
A
[Fig. 8.4.2] (P.4)
circuit pump.
A Heat source unit
C
E Pump interlock
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
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
B
D Operation ON signal
Rated load: 1A
Dip switch
7 10
0 0 1 1 1
ON.
1
2
3
without operating the heat source unit.
allowable range.
valve.
2. Power on the pump and motor valve.
supplied to the heat source unit is not less than the lower limit.
supplied to the heat source unit is not less than the lower limit.
Status A
Condition When
When all heat source units
stopped
= ON
10 V 10 V
= OFF
0 V 0 V
= ON
Model
P72~P120 7.5~12.5 HP
15~20 HP
4
5
1. Power on the pump, motor valve, and unit.
ON.
OFF.
controller.
the lower limit.
1. Power on the pump , motor valve, and unit.
ON.
controller.
the lower limit.
4.
C
While
compressor
is in
operation
= OFF
5 V 5~0 V
(Minimum
(Minimum
3.0~7.2 m 3
3
3
25