Connecting The Gas Piping; To Connect The Gas Pipe; Connecting The Boiler To The Flue Gas System; To Change The Gas Boiler To 80/125 Concentric Connection - Daikin EHYKOMB33AA Installation And Operation Manual

7 Installation
7 Open the switch box cover of the indoor unit.
8 Plug the indoor unit connector into X39A of the indoor unit PCB.
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.
Installation and operation manual
16
4 Check all parts for gas leaks on a pressure of maximum
50 mbar (500 mm H O). There may be no stress on the gas
2
supply connection.
7.7 Connecting the boiler to the flue
gas system
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. An adapter piece 80/125 concentric connection is
also available.
The concentric adapter piece is equipped with a measuring point for
the gas exhaust and one for the air intake.
b
a
a
Gas exhaust measuring point
b Air intake measuring point
The concentric adapter piece is equipped with a measuring point for
the gas exhaust and one for the air intake.
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.
2 Remove the O­ring from the concentric pipe and fit it around the
flange of the concentric adapter Ø80/125.
3 Place the concentric adapter in the top of the appliance and
turn it clockwise so that the measurement nipple points straight
forward.
4 Fit the concentric pipe for the air supply and combustion gas
flue into the adapter. The integral sealing ring ensures an
airtight connection.
5 Check the connection of the internal flue pipe and the
condensate collector. Make sure it is properly connected.
Daikin Altherma hybrid heat pump – gas boiler module
EHYKOMB33AA
4P353067­1A – 2013.10