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Method 4: Lay-down Option – Under Floor
Diagram 6. Method Clearances
700 mm
Method 3 and Method 4 are not options for SP430UN and SP435UN models. These models may
be installed to Method 1 or Method 2 only.
NOTE
SERVICE CLEARANCES – EXTERNAL
3.4
3.4.1 Installation of Flashing
The flashing must be fitted to ensure the ductwork is adequately weather protected.
To allow the heater to be moved out from the wall such as for servicing, it is important to provide
additional length in the ducting connected to the pops.
NOTE
3.4.2 SP4UN External Clearances
Front: A minimum of 500mm must be provided at the side facing away from the house.
End: A minimum of 300mm must be provided at each end of the heater.
Top: A minimum of 1000mm must be provided above the heater roof. This clearance must be maintained for the
entire surface area of the heater roof.
Diagram 7. External Clearances
Plan View
500 mm min
(Front)
(End)
300 mm
min
3.4.3 BX5 Service Clearances
Front: A minimum of 500mm must be provided at the side facing away from the house.
End: A minimum of 300mm must be provided at each end of the heater.
Top: A minimum of 1000mm must be provided above the heater roof. This clearance must be maintained for the
entire surface area of the heater roof.
Rinnai
Service
Clearance
(Full length of heater)
750 mm
Service Clearance
300 mm
HEATER DIMENSIONS AND CLEARANCES
Lowest part of floor structure
200 mm (
)
refer to AS5601
Concrete Base 50mm
Side View
1000 mm min
(End)
min
13
Ground
Service
Clearance
(Top)
Service
Clearance
(Front)
500 mm
min
Ducted Gas Heater IM
Side View
Flashing
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