Owner`s manual

15
AIR TO WATER HEAT PUMP WATER HEATERAIR TO WATER HEAT PUMP WATER HEATER
5.2
For glass/enamel models, where the water heater left operating but unused for two weeks
or more, a quantity of hydrogen gas (which is flammable) may accumulate in the top of the
water cylinder. To dissipate this gas safely, it is recommended that a hot tap be turned on
for several minutes at a sink, basin or bath, but not a dishwasher, clothes washer or other
appliance. During this procedure, there must be no smoking, open flame or any other
electrical appliance operating nearby. If hydrogen gas is discharged through the tap, it will
make an unusual sound similar to air escaping.
Water Heater Unused for Long Periods
Caution: The water heater must be filled with water before turning on the electricity.
Caution: Do not drill holes in the outer metal jacket to avoid possible damage to water lines within
the tank.
Caution: The water heater must be filled with water before turning on the electricity.
The SIDDONS water heater is a completely sealed refrigeration system, similar to a
household refrigerator. The maintenance program to be employed is not much different
to that required for the maintenance of a refrigerator. However, the SIDDONS warranty
may be void if any of the following conditions are not met or if the refrigeration lines or
components are damaged or altered in any unauthorised way.
Refer Section 13 Warranty Policy for further information.
6.1 No Puncturing the Water Tank
The water tank must not be drilled or punctured. Drilled holes or punctures, may damage
the water pipes located in the water tank.
6.2 Cleaning the Evaporator Coils
The water heater uses evaporator coils to extract heat from the air. The coil is extremely
efficent in warm humid weather; however, as temperatures drop to 10 deg C or less the coil
will begin to collect ice. The coil has been designed to auto-defrost under such conditions.
The defrost is automatic and is managed by the digital controller. It is important that the air
inlet vents are kept clean. Restriction of air-inlet or air outlet vents may void your warranty
if the system has been damaged because of insufficient airflow.
6. Maintainance & Service Information
6.3 Sacrificial Anode
A sacrificial anode is fitted inside the vitreous enamel lined cylinder. Its purpose is to help
protect the cylinder from the corrosive effects of water. Normally, the sacrificial anode should
be inspected every fifth year and replaced if necessary.
In areas where hard water or poor quality water conditions exist, the sacrificial anode must
be inspected ever y second year. Replacement anodes must meet SIDDONS' quality
specifications and be appropriate for local water conditions. The anode socket in the top of
the tank has a G1/2 /20mm thread and a socket wrench is required to unscrew it.
Before any electrical components are inspected the system MUST be turned off at the
power switch/hot water circuit breaker. Do not touch wiring or any electrical components
without supervision or training to Australian standards.
6.4 Capacitors
Capacitors are fitted to the heat pump to start the compressor, fan and circulating pump.
These will wear over time and cause higher current draw. For preventative maintenance,
we recommend all 3 Capacitors be changed after 4-5 years.