Справочник Пользователя для Rheem 300 series

14 

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 mm

2

 for a 25 MJ model 

• 

18,000 mm

2

 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

)

. 

 

Relief valve setting 

1400 kPa 

Expansion control valve setting * 

1200 kPa 

 

With expansion control valve 

960 kPa 

Without expansion control valve 

1120 kPa 

* Expansion control valve not supplied with the water heater.