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Piping installation
Installer reference guide
80
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
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
208]. This function should be used to purge the heat
exchanger coil of the domestic hot water tank.
8.3.6 To fill the domestic hot water tank
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.
8.3.7 To check for water leaks
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.
NOTICE
After water piping installation, check all connections for leaks.
8.3.8 To insulate the water piping
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.
