Owner`s manual

16
AIR TO WATER HEAT PUMP WATER HEATERAIR TO WATER HEAT PUMP WATER HEATER
The specifications of these capacitors are as follows:
· Compressor capacitor: 30 uF, 450 VAC, 50/60 Hz.
· Fan capacitor: 2 uF, 450 VAC, 50/60 Hz.
· Circulating pump capacitor: 2.5 uF, 400 VAC, 50/60 Hz.
7.Routine Service
7.1 Access and removal of Sacrifical Anode
The anode can be accessed via the heat pump section for removal:
1. Turn off power to the unit, , open PTR valve to release
pressure in the system.
2. The anode head can be unscrewed with a suitable socket wrench.
3. Once unscrewed, the anode can be drawn out through the top of the tank.
4. The new anode can then be fitted and the heater reassembled.
7.2 Flushing of Water Tank
As with other hot water heater tanks, dissolved solids in the water or scale may accumulate
in the bottom of the water tank forming sludge. This is generally less a problem with SIDDONS
units as no internal elements or burners are used. If such sludge buildup does occur, the
following procedure can be followed to clean out the tank.
1. Turn off power to the unit.
2. Turn off water supply to the unit.
3. Remove the blanking plug (brass fitting) from the unused inlet (normally on the right hand
side for left hand connected tanks). The inlets are at the bottom of the tank about 300mm up
from the base.
4. Remove the blanking plug from the unused hot water outlet (normally on the right hand
side for left hand connected tanks). The outlets are at the top of the tank.
5. Allow the water to drain from the tank. While the water is draining a non-metalic rod may
be inserted through the open cold water inlet and used to break up any sludge and assist in
its removal.
6. Care should be exercised during this procedure so as not tho damage the glass lining of
the tank. The use of metal rods should be avoided and plastic or wooden rods used instead.
7. Turning the cold water supply back on while the tank is emptying or after the tank has
drained and continuing with the mechanical agitation will further assist with the removal of
the sludge.
7.3 Thermal Overload (Incorporated in Digital Controller)
All models are fitted with a digital controller for heat pump management. One function of the
digital controller is to initiate a shut down and lockout if the compressor reaches a temperature
of 105 deg C. The system will not automatically restart from this. Turning the power off then
back on will also perform a reset.
close the water isolating valve
If the compressor shuts down again shortly afterwards,
you may have a persistent problem with the refrigeration system, call a local refrigeration
mechanic or SIDDONS for service.
8. Operation & Adjustment of the Digital Controller
Caution:
Alteration of the Digital Controller's programming and settings without authorisation from
Siddons may void your warranty.
This following section is provided ONLY for qualified technicians to assist in
installation, repairs or trouble shooting. servicing,