External Installations - Rinnai Brivis StarPro SP623UN Installation Manual

Example:
Unit rating (Ur)
Room volume (Rv) = 1m x 1m x 2.4m = 2.4m
Ur/Rv
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
T = total gas consumption of all gas appliances, MJ/hr. e.g. SP521UN = 90MJ/hr
F = factor (detailed in the table below)
Table 6. Ventilation F Factors
Gas appliance location
Gas appliance in a room or enclosure
Gas appliance in a plant room
Gas appliance in a residential garage
* Directly to outside means through an external wall to outside, into a cavity vented to outside,
into an underfloor space vented to outside, or into a roof space vented to outside.
Properties Approved for Construction after 31st March 2014
c. Determine if the rating per cubic metre of the space is greater than 0.4 MJ/hr.
Example:
Unit rating (Ur)
Room volume (Rv) = 1m x 1m x 2.4m = 2.4m
Ur/Rv
As the result is greater than 0.4 MJ/hr per cubic metre of the space, additional ventilation is required.
Refer to AS/NZS 5601 for natural ventilation requirements.
Note: For New Zealand ventilation requirements and all other applications, e.g. Mechanical Ventilation, refer AS/NZS 5601.
6.4

EXTERNAL INSTALLATIONS

SP4, SP5, SP6 Universal and BX5 models can be installed outside of the house. For an installation under a house
floor, an SP4, SP5 or SP6 Universal model should be chosen.
All heaters that are installed externally on the ground should be installed on a level concrete base or pad, and there
must be provision made to drain away any surface water from the heater and condensate for SP6 models. If the
heater is to be installed in an elevated position or on a roof, the installation shall comply with AS/NZS 5601. It must
be secured to prevent movement and it must have adequate provision for service access.
Note: 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.
Rinnai
= 120MJ/hr
= 120/2.4 = 50 MJ/hr per m
2
Source of Ventilation
Directly to outside*
Via an adjacent room
Directly to outside*
Via an adjacent room
Directly to outside*
= 120MJ/hr
= 120/2.4 = 50 MJ/hr per m
3
3
3
3
24
Factor F
300
600
150
300
300
Ducted Gas Heater IM