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[ II Restrictions ]
[7] Water Pipe Installation
1. Schematic Piping Diagram and Piping System Components
Please build the hot water and heat source fluid circuit
so that it is a closed system.
Do not use hot water directly for showers or other
applications.
Do not allow other heat source liquids to mix with the hot
water and heat source fluid circuit.
Indicates the direction of
the flow.
Heat pump unit
Hot water
side heat
exchanger
Heat source
side heat
exchanger
Union joints/flange joints
1
Thermometer
2
Water pressure gauge
3
V
l a
e v
4
Flexible joint
5
Pump
6
Air vent valve
7
Expansion tank
8
'
Closed expansion tank
8
W
t a
r e
p
p i
e
9
D
a r
n i
v
a
v l
e
10
Strainer
11
Flow switch
12
HWE1312A
Water supply
Heat source side pipe connection is normal condition.
(Heat source fluid inlet is upper and outlet is lower.)
Required to allow for a replacement of equipment.
Required to check the performance and monitor the operation of the units.
Recommended for checking the operation status.
R
e
q
i u
e r
d
o t
a
o l l
w
Recommended to prevent the noise and vibration from the pump from being transmitted.
Use a pump that is large enough to compensate for the total water pressure loss and
supply sufficient water to the unit.
Install air venting valves to the places where air can accumulate.
Automatic air vent valves (such as
Install an expansion tank to accommodate expanded water and to supply water.
Use a closed expansion tank to help manage the concentration of brine.
U
s
e
p
p i
e
s
h t
t a
a
n I
t s
l l a
d
a r
n i
v
a
v l
e
Install a strainer near the unit to keep foreign materials from entering the water-side
head exchanger (supplied).
Required to protect the unit.
Overflowed water
To drain outlet
Minimum upward
gradient of 1/200
f
r o
a
e r
p
a l
c
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m
e
t n
r o
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a
n
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') are effective.
7
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h t
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- 27 -
Hot water:
air conditioning
floor heating
etc
g
f o
h t
e
f
o l
w
a
d
u j
s
e t
. r
p
o r
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a
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s
l u
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. g
Heat source:
geothermal
river water
exhaust heat
etc
GB
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