EKHWE150~3 E300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
Installation manual
3
Safety devices
■
Thermal protector — The booster heater in the domestic hot
water tank is equipped with a thermal protector. The thermal
protector is activated when the temperature becomes too high.
When activated, the protector has to be reset on the domestic
hot water tank by pressing the red button (for access, remove
the electrical box cover).
■
Pressure relief valve — A pressure relief valve (field supply) in
accordance with relevant local and national regulations, and with
an opening pressure of maximum 10 bar must be connected to
the pressure relief valve connection.
Water may drip from the discharge of the pressure relief valve
device.
Outlook diagram
Outlook diagram, see
Installation guidelines
Keep in mind the following guidelines when installing the domestic
hot water tank:
■
The installation location is frost-free.
■
Take care that in the event of a leak, water cannot cause any
damage to the installation space and surroundings.
■
Make sure to make the piping in size 1" or more (and reduce to
3/4" at the inlet of the tank) as to have sufficient water volume in
the piping between indoor unit and domestic hot water tank.
■
Locate the domestic hot water tank in a suitable position to
facilitate ease of maintenance; remember access is required to
the electrical box. Refer to the grey-coloured zones indicated in
■
Provide a connection for the pressure relief valve blow-off and
drain.
■
To avoid back siphonage it is advised to install a non-return
valve on the water inlet of the domestic hot water tank in
accordance with local and national regulations.
Installing the domestic hot water tank
1
Check if all domestic hot water tank accessories (see
2
When floor mounting, place the domestic hot water tank on a
level surface. If required, adjust the legs at the bottom. When
wall mounting (only for EKHWET150A3V3 model), make sure
the wall is sturdy. In both cases, make sure the domestic hot
water tank is mounted level.
3
Make sure to respect the service space as indicated in
Connecting the water circuits
Refer to the chapter "Typical application examples" described in the
installation manual delivered with the indoor unit for details on
connecting the water circuits and the motorised 3-way valve.
Make sure to insulate all water pipes and connections.
Connecting the 3-way valve
1
Refer to
before making the connection.
2
Installation position.
It is advised to connect the 3-way valve as close as possible to
the indoor unit. It can be installed according the following four
configurations.
■
The domestic hot water tank relief valve connections
may not be used for other purpose.
■
Do not install heaters without thermal cut-outs.
The electrical box lid must only be opened by a
licensed electrician.
Switch off the power supply before opening the
electrical box lid.
figure A
figure B
figure C
figure D
1
From
AD
indoor unit
2
To domestic hot water tank
3
To room heating
1
2
3
1
3
2
1
2
3
1
3
2
