Connecting The Gas Piping; To Connect The Gas Pipe - Daikin Altherma EHYKOMB33AA Installations- Und Bedienungsanleitung

DANGER: RISK OF BURNING/SCALDING
In case of high leaving water setpoints for space heating
(either a high fixed setpoint or a high weather-dependent
setpoint at low ambient temperatures), the heat exchanger
of the boiler can be heated up to temperatures higher than
60°C.
In case of a tapping demand, it is possible that a small
volume of water tapping (<0.3 l) has a temperature higher
than 60°C.
To connect the water piping for domestic hot water
(applicable for Switzerland)
For Switzerland, domestic hot water should be made by a domestic
hot water tank. The domestic hot water tank must be installed with a
3-way valve to the space heating piping. See the manual of the
domestic hot water tank for more details.
Flow resistance graph for appliance domestic hot
water circuit
Not applicable for Switzerland
l/min
15
13
11
9
7
5
3
1
0 0.2 0.4 0.6 0.8 1.0 1.2
The minimum flow for domestic hot water operation is 1.5 l/min. The
minimum pressure is 0.1 bar. A low flow (<5 l/min) can reduce
comfort. Make sure to set the setpoint high enough.
To connect the water piping for space heating
Use the straight brass fitting connections (accessory of the heat
pump unit).
1 The space heating piping of the boiler will be connected to the
indoor unit.
2 Install the straight brass fitting connections so that they
perfectly match the connection of both modules.
3 Tighten the straight brass fitting connections.
EHYKOMB33AA
Daikin Altherma hybrid heat pump – gas boiler module
4P353067-1L – 2022.09
bar
1.4 1.6 1.8 2.0
a b
a Outlet space heating
b Inlet space heating
NOTICE
Make sure that the straight brass fitting connections are
tightened thoroughly to prevent leakage. Maximum torque
is 30 N∙m.
To fill the domestic water circuit of the gas boiler
1 Open the main tap to pressurise the hot water section.
2 Vent the exchanger and the pipe system by opening a hot water
tap.
3 Leave the tap open until all air has disappeared from the
system.
4 Check all connections for leaks including internal connections.
10.2

Connecting the gas piping

10.2.1

To connect the gas pipe

1 Connect a gas valve to the 15 mm gas connection of the gas
boiler and connect it to the field pipe according to local
regulations.
2 Install a gas mesh filter in the gas connection if the gas may be
contaminated.
3 Connect the gas boiler to the gas supply.
10 Piping installation
Installation and operation manual
27