Rinnai 11
Ducted Gas Heater IM
2.9 INSTALLATION OF INTERNAL HEATERS
The Classic 2PWN range is designed to be installed in the roof or beneath the floor.
This must be done in accordance with the following guidelines and AS/NZS 5601.
Installing in the Roof Space
• The area under the heater shall be capable of supporting the additional load, without causing deformation of any
part of the building structure.
• The appliance shall be accessible by means of fixed access, a normal ladder or steps.
• A passage of 600mm wide shall be provided between the roof access opening and the heater.
• This passage shall have a suitable walkway of at least 19mm thick particle board or equivalent and be capable
of supporting the weight of a person and their tools.
• A permanent level platform shall be provided beneath the heater and this platform area shall extend 750mm out
from the controls access panel side and fan motor access panel side/s for the entire length of the heater.
• The air gap created between the base of the heater and the platform by the heater's supports must be
maintained.
• Permanent artificial lighting must be provided at the heater, with the switch located at the roof access opening.
Installing Beneath the Floor
• There must be a minimum clearance of 200mm between any part of the appliance and the lowest part of the
floor structure. In addition to this, refer to section "Service Clearances”.
• The heater must be located within 2m of the access opening, or there is to be a minimum clearance of 1.2m
between the lowest part of the floor structure and ground level, maintained from the access opening to the
heater.
• All under floor installations must be on a level concrete base (50mm thick), and provision made to drain any
seepage or ground water away from the heater.
• Permanent artificial lighting must be provided at the heater, with the switch located at the access opening.
• Lateral (horizontal) flues may be installed in accordance with AS/NZS 5601, making sure that the lateral flue
section has a minimum rise of a 20mm per metre of lateral run.
• The flue must be terminated outside the building in accordance with AS/NZS 5601.
2.10 INSTALLATION OF INTERNAL HEATERS IN A ROOM, ENCLOSURE,
RESIDENTIAL GARAGE OR PLANT ROOM
Installation of a gas appliance in a room or enclosure for properties approved for construction
PRIOR TO
March 31
st
2014
a.
Determine if the rating per cubic metre of the space is greater than 3MJ/hr per m³.
Example:
Unit rating (Ur)
= 120MJ/hr
Room volume (Rv) = 1m x 1m x 2.4m = 2.4m
3
Ur/Rv
= 120/2.4 = 50 MJ/hr per m
3
As the result is greater than 3 MJ/hr per cubic metre of the space, additional ventilation is required.
b.
Two permanent openings are required, each equivalent in area to the determined value A. The lower vent shall
be located close to the floor or at burner level. The upper vent shall be located at or above the top of the unit.
The two openings may be combined as long as the above conditions are met.
Determine free ventilation area using A = T x F, where:
A = minimum free ventilation area, mm
2
T = total gas consumption of all gas appliances, MJ/hr. e.g. 1 x 2PW20N =92MJ/hr
F = factor (detailed in the following table)
GENERAL PRODUCT GUIDELINES
