Daikin Altherma 3 H HT - Page 77

8 | Piping installation
Installer reference guide
77
EPRA14~18D + ETVZ16S18+23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
M2
aaa
M3M1
M2
aaa
M3M1
b
c
cc
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 "8.2.6To protect the
water circuit against freezing"[4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