7 Installation
Installation and operation manual
17
EHYKOMB33A
Daikin Altherma hybrid heat pump – gas boiler module
4P353067-1H – 2018.10
9 Close the switch box cover of the indoor unit.
10 Close the switch box cover of the gas boiler.
11 Close the gas boiler.
7.6 Connecting the gas piping
7.6.1 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.
4 Check all parts for gas leaks on a pressure of maximum
50 mbar (500 mm H
2
O). There may be no stress on the gas
supply connection.
7.7 Connecting the boiler to the flue
gas system
WARNING
▪ Make sure that the socket connections of the flue and
air supply duct materials are correctly sealed. Improper
fastening of the flue and air supply duct can lead to
hazardous situations or result in personal injury.
▪ Check all flue components for tightness.
▪ Do NOT use screws or parkers to mount the flue
system as leakage can occur.
▪ Sealing rubbers can be negatively affected when
grease is applied, use water instead.
▪ Do NOT mix any components, materials or ways of
coupling from different manufacturers.
The gas boiler is designed ONLY for operation independent of room
air.
The gas boiler is delivered with a 60/100 concentric flue gas/air
intake connection. Fit the concentric pipe thoughtfully in the adapter.
The built-in gaskets ensure there is an air tight seal.
An adapter piece 80/125 concentric connection is also available. Fit
the concentric pipe thoughtfully in the adapter. The built-in gaskets
ensure there is an air tight seal.
INFORMATION
Carefully follow the instructions as described in the adapter
set.
The concentric adapter piece is equipped with a measuring point for
the gas exhaust and one for the air intake.
a Gas exhaust measuring point
b Air intake measuring point
The air supply and the flue pipe can also be connected separately as
a dual pipe connection. An option to change the gas boiler from a
concentric to a dual pipe connection is available.
NOTICE
When installing the gas exhaust take the installation of the
outdoor unit into account. Make sure the exhaust gases
are not sucked into the evaporator.
When installing the gas exhaust and the air intake, take
into account the serviceability of the indoor unit. When the
gas exhaust/air intake goes backwards over the indoor
unit, the expansion vessel cannot be accessed and, if
necessary, will have to be replaced outside the unit.
7.7.1 To change the gas boiler to 80/125
concentric connection
The concentric connection can be changed from Ø60/100 to
Ø80/125 by an adapter set.
1 Remove the concentric pipe from the air supply and combustion
gas pipe at the top of the gas boiler by turning
counterclockwise.
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