Installation manual
10
EKHBH/XE008BA
Indoor unit for air to water heat pump system
4PW56301-1A
Main components
1.
Air purge valve
Remaining air in the water circuit will be automatically removed
via the air purge valve.
2.
Emergency backup heater
The backup heater consists of an electrical heating element in
the backup heater vessel that will provide heating capacity to the
water circuit in case of malfunction of the outdoor unit.
3.
Temperature sensors
Four temperature sensors determine the water and refrigerant
temperature at various points in the water circuit.
4.
Switch box
The switch box contains the main electronic and electrical parts
of the indoor unit.
5.
Heat exchanger
6.
Expansion vessel (10 l)
7.
User interface
The user interface allows the installer and user to set up, use
and maintain the unit.
8.
Refrigerant liquid connection
9.
Refrigerant gas connection
10. Shut-off valves (accessory)
The shut-off valves on the water inlet connection and water
outlet connection allow isolation of the indoor unit water circuit
side from the residential water circuit side. This facilitates
draining and filter replacement of the indoor unit.
11. Water inlet connection
12. Water outlet connection
13. Drain and fill valves
DANGER
■
Do not touch water pipes during and immediately after
operation as the pipes may be hot. Your hand may
suffer burns. To avoid injury, give the piping time to
return to normal temperature or be sure to wear
proper gloves.
■
When service panels are removed, live parts can be
easily touched by accident.
Never leave the unit unattended during installation or
servicing when the service panel is removed.
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