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You must be able to read the information on the rating plate. If possible leave
headroom of one water heater height so the anode can be inspected or replaced.
Remember you may have to take the entire water heater out later for servicing.
The water heater is to be installed at ground or floor level, or in a suitable
cupboard. Alternatively, it may be hung on a wall capable of taking the weight of
the filled water heater using a suitable wall bracket and fixings. It must stand
vertically upright on a stable base as acceptable to local authorities. The base of
the water heater is made of corrosion resistant material, and it may be placed
directly in contact with the supporting surface. It is not necessary to allow for free
air circulation under the base of the water heater.
Note: The water heater should not be placed in direct contact with a concrete
surface that is less than two months old and not fully cured as this may attack
the metal coating of the water heater base. A moisture barrier should be used
between the two surfaces in this instance. The barrier should extend at least
100 mm from the water heater and may be trimmed after two months.
Remember all local authorities have regulations about putting water heaters into
roof spaces.
SAFE TRAY
Where damage to property can occur in the event of the
water heater leaking, the water heater must be installed
in a safe tray. Construction, installation and draining of
a safe tray must comply with AS/NZS 3500.4 and all
local codes and regulatory authority requirements. The
safe tray must also meet the requirements of Clause
G12
of
the
AS/NZS 3500.4 and the NZBC also have particular
requirements when a safe tray must be installed.
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
cold water connection diagram
Model
Temp press relief valve setting
Expansion control valve setting*
Maximum mains supply pressure
With expansion control valve
Without expansion control valve
* Expansion control valve not supplied with water heater
New
Zealand
on page 32.
Building
Code.
312025
1000 kPa
850 kPa
680 kPa
800 kPa
25
INSTALLATION
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