INSTALLATION
28
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 35.
Model
971160
9W1160, &
250, 315, 400
Temp press relief valve setting
1400 kPa
1000 kPa
Expansion control valve setting*
1200 kPa
850 kPa
Maximum mains supply pressure
With expansion control valve
960 kPa
680 kPa
Without expansion control valve 1120 kPa
800 kPa
* Expansion control valve not supplied with 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.
ANODE
The vitreous enamel lined cylinder of the water heater is only covered by the
Aquamax 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 Aquamax 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 Aquamax warranty to apply to the
water heater cylinder (refer to
on page 19). 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
on page 20).
