Daikin Altherma 3 H MT F Installer's Reference Manual page 87

EPRA08~12EAV3+W1 + ETVH12SU18+23EA6V
Daikin Altherma 3 H MT F
4P644482-1 – 2021.03
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
Use the following graph to determine the maximum water volume for the
calculated pre-pressure.
A
2.4
2.1
1.8
1.5
1.2
1
0.9
0.6
0.3
20
70
A Pre-pressure (bar)
B Maximum water volume (l)
Water
Water + glycol
Example: Maximum water volume and expansion vessel pre-pressure
Installation
height
(a)
difference
≤7 m No pre-pressure adjustment is
required.
c
c
M1 M2
a a
4
freezing" [ 96].
200 220 270 290
170
120
Water volume
≤190 l
8 Piping installation
|
b
M3
a
"8.2.7 To protect the
320
B
>190 l
Do the following:
▪ Decrease the pre-pressure
according to the required
installation
difference. The pre-pressure
should decrease by 0.1 bar
for each metre below 7 m.
▪ Check if the water volume
does NOT exceed
maximum allowed
volume.
Installer reference guide
height
the
water
87