INSTALLATION
38
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting
valve is required and should be fitted as shown in the
on page 42.
Model
270
Temperature pressure relief valve setting
1000 kPa
Expansion control valve setting *
850 kPa
Maximum mains supply pressure
With expansion control valve
680 kPa
Without expansion control valve
800 kPa
* Expansion control valve not supplied with the water heater.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply and a pressure pump system is not installed, then
the bottom of the supply tank must be at least 1 m above the highest point of the hot water plumbing system,
including the water heater. Care must be taken to avoid air locks. The cold water line to the water heater should
be adequately sized and fitted with a full flow gate valve or ball valve.
REDUCING HEAT LOSSES
The cold water line to and the hot water line from the water heater must be insulated in accordance with the
requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed.
ANODE TYPES
The vitreous enamel lined cylinder of the water heater is only covered by the Solahart warranty when the total
dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode
is used. If an incorrect colour coded anode is used in the water heater, any resultant faults will not be covered
by the Solahart warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the
water heater cylinder.
The correct colour coded anode for the water supply being used must be selected and fitted to the water heater
for the Solahart warranty to apply to the water heater cylinder (refer to
on page 30 and the
on page 30). The black anode is typically fitted as standard.
If an incorrect anode is used, there is also the possibility the anode may become overactive and hydrogen gas
could accumulate in the top of the water heater during long periods of no use. In areas where this is likely to
occur, the installer should instruct the householder on how to dissipate the gas safely (refer to
page 31).
SADDLING - PIPE WORK
To prevent damage to the cylinder when attaching pipe clips or saddles to the water heater jacket, we
recommend the use of self-drilling screws with a maximum length of 13 mm. Should pre drilling be required,
extreme caution must be observed when penetrating the jacket of the water heater.
Note: If the cylinder is damaged as a result of attaching pipe clips or saddles to the jacket, any resultant
faults will not be covered by the Solahart warranty.
