INSTALLATION
Keep the water heater and flue at least 25 mm clear of walls, cupboards, timber or any other combustibles and at least 500 mm clear of curtains and furnishings.
The water heater is to be installed at floor level and must stand vertically upright. There are special requirements in AS 5601 for water heaters installed in a garage, an enclosed space and other locations. Remember all local authorities have regulations about putting water heaters into roof spaces.
If installed in a cupboard, an adequate air supply must be provided. For efficient water heater operation allow a free open space at both the top and bottom of the access door, each of at least:
•15,000 mm2 for a 25 MJ model
•18,000 mm2 for a 30 MJ model
SAFE TRAY
It is a requirement of AS/NZS 3500.4 that for a new installation, a water heater be installed in a safe tray where in the event of a leak, property may otherwise be damaged. Construction, installation and draining of a safe tray must comply with the abovementioned Standard.
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 installation diagram (refer to diagram on page 20).
Model | 130 – 170 |
Relief valve setting | 1400 kPa |
Expansion control valve setting * | 1200 kPa |
Max. mains supply pressure |
|
With expansion control valve | 960 kPa |
Without expansion control valve | 1120 kPa |
|
|
* Expansion control valve not supplied with the water heater.
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