Daikin Altherma 3 H HT ETSX16E7, Installer'S Reference Manual

Page: 97 / 312

8 | Piping installation
Installer reference guide
97
EPRA14~18D + ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679467-1B – 2022.09
8.2.5 To fill the heating system
DANGER: RISK OF ELECTROCUTION
During the filling process, water can escape from any leaking point and can cause an
electrical shock if it comes into contact with live parts.
▪
Before the filling process, de-energise the unit.
▪
After the first filling and before switching on the unit with the mains switch, check
whether all electric parts and connection points are dry.
1 Connect a hose with a non-return valve (1/2") and an external manometer
(field supply) to a water tap and the fill and drain valve. Secure the hose
against slipping off.
j/k
e.1
B
AB
A
e.2
50%
(45%)
100% 0%
CH Bypass
(B) (A)
f
a
h
i
c
j
k
d
b
g
50% (67%)
100%
0%
CH
DHW
(A) (B)
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 "To purge the air out
of the unit with the manual air vent valves" [
4
241]).
3 Open the water tap.
4 Open fill and drain valve and monitor the manometer.