Maintenance; Water Circuit / Condensate Outflow; Air Circuit; Corrosion Protection Anode - Dimplex BWP 30 HLW Montage- Und Gebrauchsanweisung

7
Relay for heat exchanger operation
Relay with a floating contact (HW HP with internal heat ex-
changer only) to control the ancillary devices (pump, solenoid
valve etc.) for operation with a second heat generator. The relay
contact is closed when the "Heat Exchanger" switch is activated
and a hot water request from the HW HP temperature controller
is present.
Sensor pipe for external temperature sensors
A vertical sensor pipe ∅
12mm (opening in the bottom plate
i
sealed with a leading-in tube) for an external heat sensor is fitted
in the rear of the HW HP and a cable feedthrough is available in
the rear panel.
External temperature sensor installation position
(device cover removed)
7

Maintenance

ATTENTION!
Disconnect the power supply before opening the HW HP; observe
possible coasting of ventilator.
General information
The hot water heat pump is virtually maintenance-free. A one-off
visual inspection for possible leakage in the water system or
stopping-up of the condensate outflow should take place a few
days after the maintenance work has been carried out.
Do not carry out any maintenance work on the refrigerating cir-
cuit of the heat pump.
Only use a damp cloth and soap solution for cleaning the HW
HP.
ATTENTION!
Ensure water does not come into contact with the operator controls.
Unplug mains plug/disconnect the power supply before beginning any
cleaning work.
7.1 Water Circuit / Condensate
Outflow
The water circuit check is limited to filters that may have been in-
stalled on-site, and possible leakage. Dirty water filters should be
cleaned and replaced if necessary. Occasionally check the seal
valve in the condensed water hose for contamination; replace if
necessary.
E-8

7.2 Air Circuit

Maintenance work is limited to cleaning the evaporator on a reg-
ular basis, and as needed.
ATTENTION!
Risk of injury caused by sharp-edged fins. Fins must not be deformed or
damaged!
If air filters are used, they should be regularly checked for con-
tamination and cleaned and replaced if necessary.

7.3 Corrosion Protection Anode

The corrosion protection anode installed in the hot water cylinder
should be electrically checked on a regular basis, at least every
two years after start-up, and be replaced if necessary. Electrical
checking is carried out by means of a suitable ammeter, without
draining the tank.
Procedure:
1) Unplug PE cable from protection anode tab.
2) Connect ammeter (0...50mA) between PE cable and tab.
3) Evaluation of protection anode wear:
Measured value > 1 mA ⇒ protection anode is in working
order.
Measured value < 1 mA ⇒ protection anode must be tested
or replaced.
If electrical testing does not provide any clear results, a visual in-
spection of the protection anode by a technician is recom-
mended.
Should replacement of the protection anode [by a technician] be
necessary, the tank must be drained via the valve provided (fitted
during installation - see Appendix).
ATTENTION!
Malfunctioning protection anodes reduce the operating life of the device!
(Reactive anode: electrically insulated magnesium anode with selenium
according to DIN 4753 Part 6)