22
When draining the tank, ensure that
there is a large enough air inlet at
the top to avoid any depression in the
tank; failure to do so will invalidate
the warranty.
Maintenance
8 Maintenance
The maintenance of this appliance covers the critical ar-
eas of the Domestic Hot Water Cylinder, the Heat Pump
Module, Air Connections and Electrical Connections.
8.1 DHW Cylinder
After servicing, complete the relevant Service Record
section of the Benchmark Checklist located on the inside
back pages of this document. To meet with warranty re-
quirements, the cylinder must be serviced annually.
Periodically the immersion heater should be removed
drained for internal inspection Check the O-ring seal for
damage and replace if necessary. A torque of 40 Nm is
recommended when tightening up the immersion after it
1. Draw some water from cold water tap and retain
in container.
2. Isolate cold water mains supply from cylinder.
to assure safe discharge and check that valve is
not dripping when closed.
safe discharge and check that valve is not dripping
when closed. The expansion relief valve should be
operated regularly to remove lime deposits and to
verify that it is not blocked.
5. Open hot water tap and release remaining pres-
sure from unit.
6. If the system is drained completely for an inter-
nal inspection, ensure the hot water tap remains
open, connect a hose to the drain valve and en-
sure a safe discharge.
7. Note the set pressure of the pressure reducing
valve. Remove cartridge and clean strainer in wa-
ter provided in container. Re-assemble pressure
reducing valve ensuring the correct pressure is
set.
Figure 17:Immersionheatercleaning
-
prove durability it is advised that an an-
nual maintenance check should be car-
•
before opening it.
• Wait for the fan to come to a complete
stop before starting work on the
appliance.
• Do not get any water on any of the
electrical components.
• The pressure-limiting device should
be activated regularly to eliminate
limescale and to check for blockages.
• The R290 refrigerant is odourless.
• Do not damage the pipes in the
refrigerant circuit.
•
appliance.
• If the refrigerant is leaking, unplug the
appliance, air out the room, and contact
customer service.
• Do not use any mechanical means to
speed up the defrosting process.
• Do not pierce or burn the appliance: in
case of intervention on the refrigerant
circuit, the refrigerant must be
recovered.
- In case of maintenance of the refrigerant cir-
cuit:
1) Secure the area you will be working in,
2) Inform people of the potential danger in-
volved in the work.
-
imised.
5) Check the area with an appropriate leak de-
tector before and during the work.
6) Place a CO dry powder extinguisher near
the work area.
The R290 refrigerant in the heat pump
circuit poses no risk to the environ-
-
mable refrigerant complies with all na-
tional gas regulations.
8. Periodically the immersion heater should be re-
system is drained for internal inspection Check
the O-ring seal for damage and replace if neces-
sary. A torque of 40 Nm is recommended when
tightening up the immersion after it has been re-
9. Check electrical wiring connections and the condi-
tion of the cable of the immersion heater and the
thermostat.
10. The immersion heater boss can also be used for
access to view the internal components of the cyl-
inder.
11. Re-commission unit (see chapter 7.1).
Failure to service this appliance annual-
ly may invalidate the warranty.
All maintenance on this product must be
required.
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