Service
Sacrificial anode replacement
There is a sacrificial anode mounted on an inspection cover
(58) at the top of the water heater. Anode replacement
takes place as follows:
Remove the heat pump’s circuit fuses in the distribu-•
tion cabinet.
Empty the water heater, see the section •
“Commissioning and adjusting” – “Emptying the hot
water heater”.
Dismantle the inspection cover (83).•
Replace the sacrificial anode in the inspection cover.•
Re-assemble in the reverse order.•
Sacrificial anode replacement can be eliminated if a direct
current anode is fitted.
83
Service
Opening the cover on the distribution box
First lift off the upper service cover as described in the sec-
tion “Maintenance routines” – “Cleaning the air filter”.
The cover on the distribution box can then be opened to
the horizontal position by loosening the screws on the top
edge of the cover.
Refrigerant system
Work on the refrigerant system must
be done by authorised personnel in ac-
cordance with the relevant legislation on
refrigerants, supplemented by additional
requirements for flammable gas, for exam-
ple, product knowledge as well as service
instruction on gas systems with flammable gases.
Resetting the miniature circuit breakers
The miniature circuit breaker (7) is accessible in the distri-
bution box behind the upper service cover. See the section
Service – “Opening the cover to the distribution box”.
The normal position on the miniature circuit-breaker (7) is
“1” (left). The above may only be carried out by persons
with the relevant expertise. Note the distribution box con-
tains live parts.
Cleaning the fan
The fan may need cleaning if it becomes noisy. Contact
your installer!
7
Draining the heating system
The heating system is drained through the drain valve (51).
This is located behind the lower service cover.
Emptying the hot water heater
The water heater is emptied through the drain valve (51).
Connect a 3/4" hose that runs into the floor drain and
close the filler valve (46). Open the drain valve’s tap and
arrange an air supply by opening the hot water tap. If this
is not sufficient, loosen a pipe coupling on the hot water
side.
To Next Page
Loading...
