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5 Piping installation
9 After completing the installation, the installer has to fill out the
warning label on the tank with indelible ink. The warning label
can be found on the unit top plate.
WARNING
The discharge pipes from the pressure relief valves MUST
terminate in a safe and visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Discharge piping, tundish, drain valves, etc. MUST be
positioned away from any electrical components.
▪ The discharge pipe away from the tundish MUST
terminate in a safe, visible position without forming any
risk to persons in the vicinity.
WARNING
▪ Do NOT install any valves between the domestic hot
water tank and relief valves/expansion vessel.
▪ Do NOT install shut-off valves between the expansion
relief valve and the domestic hot water tank.
NOTICE
▪ All pipework and fittings must be flushed free of flux
and debris prior to installing the domestic hot water
tank kit. Failure to do this may cause irreparable
damage to the tank kit controls. Flush the system by
opening the hot water tap.
▪ The tundish pipework must be a 22 mm metal pipe with
a minimal vertical length of 300 mm below the tundish
before any elbows or bends in the pipework. All
pipework must have a continuous fall of 1 in 200
thereafter. Maximum permitted (equivalent) length of
22 mm pipework is 9 m. Each bend or elbow is
equivalent to 0.8 m of pipework.
5.3.3
To connect the recirculation piping
Prerequisite: Only required if you need recirculation in your system.
1 Remove the top panel from the unit, see
unit" [ 4 6].
indoor
2 Cut out the rubber grommet on top of the unit, and remove the
stop. The recirculation connector is located below the space
heating/cooling water outlet pipe.
3 Route the recirculation piping through the grommet and connect
it to the recirculation connector.
Installation manual
14
4 Reattach the top panel.
5.3.4
To fill the space heating circuit, use a field supply filling kit. Make
sure you comply with the applicable legislation.
5.3.5
1 Open every hot water tap in turn to purge air from the system
pipe work.
2 Open the cold water supply valve.
3 Close all water taps after all air is purged.
4 Check for water leaks.
5 Manually operate the field-installed pressure relief valve to
ensure a free water flow through the discharge pipe.
5.3.6
Before insulating the water piping, it is important to detect water
leaks, in particular small leaks. Small leaks can easily be overseen,
but can cause damage to the unit and surroundings over a longer
period of time.
"4.2.1 To open the
5.3.7
The piping in the complete water circuit MUST be insulated to
prevent reduction of the heating capacity.
Consider that the space heating piping can condensate during
cooling operation. Foresee adequate insulation for these pipes.
To fill the space heating circuit
NOTICE
▪ Air in the water circuit can cause malfunctioning of the
backup heater. During filling, it may not be possible to
remove all the air from the circuit. Remaining air will be
removed through the automatic air purge valves during
the initial operating hours of the system. Additional
filling with water afterwards may be required.
▪ To purge the system, use the special function as
described in the chapter
"8
This function should be used to purge the heat
exchanger coil of the domestic hot water tank.
To fill the domestic hot water tank
To check for water leaks
NOTICE
After water piping installation, check all connections for
leaks.
To insulate the water piping
Commissioning" [ 4 37].
EGSAH/X06+10UD
Daikin Altherma 3 GEO
4P598591-1C – 2023.02
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