Daikin EPRA10EAV3 Installer's Reference Manual page 96

8 | Piping installation
Installer reference guide
96
e.1 e.2 B
A
f
a
b
i
a Hose with a non-return valve (1/2") and an external manometer (field supply)
b Fill and drain valve
c Space heating/cooling water OUT
d Space heating/cooling water IN
e.1 Valve motor
e.2 Valve motor latch
f Water tap
g Automatic air purge valve
h Pressure gauge (field supply)
i Pressure vessel (field supply)
j Bypass valve
k Tank valve
2 Prepare for air purging according to the instructions (see
of the unit with the manual air vent
3 Open the water tap.
4 Open fill and drain valve and monitor the manometer.
5 Fill the system with water until the external manometer shows that the
system target pressure is reached (system height +2 m; 1 m water column =
0.1 bar). Make sure that the pressure relief valve does not open.
6 Close the manual air vent valves as soon as water emerges free of bubbles.
7 Close the water tap. Keep the fill and drain valve open in case it is necessary to
repeat the filling procedure after the air purging of the system. See
4
purge function" [ 237].
8 Close the fill and drain valve and remove the hose with non-return valve only
after air purging is performed and the system is completely filled.
j/k
AB
0%
CH
(B)
g
d
c
j
k
50%
h
0%
CH
(A)
4
valves" [
50%
100%
Bypass
(A)
100%
DHW
(B)
"To purge the air out
238]).
EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1B – 2022.07
"11.4.2 Air