8
|
Piping installation
Installer reference guide
77
EPRA14~18D + ET23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
M2
a
a
a
M3
M1
M2
a
a
a
M3
M1
b
c
c
c
c
c
c
c
a
Individual room thermostat (optional)
b
Overpressure bypass valve (delivered as accessory)
c
Shut-off valve
Maximum water volume
NOTICE
The maximum water volume depends on whether glycol is added to the water
circuit. For more information on the addition of glycol, refer to
water circuit against freezing"
84].
Use the following graph to determine the maximum water volume for the
calculated pre-pressure.
20
2,4
2,1
1,8
1,5
1,2
0,9
1
0,6
0,3
70
120
175
140
200
255
220
270
A
B
A
Pre-pressure (bar)
B
Maximum water volume (l)
Water
Water + glycol
Example: Maximum water volume and expansion vessel pre-pressure
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