Mitsubishi Electric CITY MULTI PQHY-P YLM-A Series Installation Manual page 3

8
[Fig. 8.1.1]
C
A
Heat source unit sample installation
System example of water circuit
[Fig. 8.1.2]
F E
P T
D C
F E
P T
D B
Note: The figure above shows a sample water circuit. This circuit is provided only as a reference, and Mitsubishi Electric Corporation shall not be held for any problems arising from
the use of this circuit.
A : Heat source unit
D : Shutoff valve *1
G : Backflow prevention valve
J : 3-way valve
*1 These items are field supplied.
*2 As for flow switch setting, please refer to "8.4 Pump interlock".
B
F
A : Main circulating water pipe
D : Water outlet (upper)
G : Water inlet (lower)
D
E
G
H
J
H
B
G
I
F E
P T
D C
F E
A
P T
D B
B : Strainer *1
E : Temperature gauge *1
H : Pump
K : Cooling tower
8.1
B : Shutoff valve
E : Refrigerant pipes
H : Drain pipe
K
F E
P T
D C
F E
A
P T
D B
C : Flow Switch *1*2
F : Pressure gauge *1
I : Flexible joint
L : Heating tank
C : Shutoff valve
F : Y-type strainer
L
J
F E
P T
D C
F E
A
P T
D B
A
3