Rinnai 26
Ducted Gas Heater IM
8.4 OUTLET CHART INFORMATION
The outlet chart (Table 6) provides recommendations based on the Product Sizing Guide or a system designed using
accepted design principles. The calculations use the typical size of registers and diffusers used on domestic heating
systems (300mm x 100mm floor registers and 150mm round ceiling diffusers) with 150mm ductwork.
For all systems, the minimum number of outlets, the outlet grille and the damper in the duct must all remain fully
open if the heater is to operate properly without overheating. Additionally, to ensure that the air velocity through each
ceiling outlet is sufficient, the maximum number of fully open ceiling outlets should not be exceeded (although the
system will operate efficiently with more ceiling outlets fully open if properly balanced).
There is not a limit/maximum number of floor outlets, so Table 6 lists the
typical
number for each heater model.
'Half' figures, such as 1.5, indicate one outlet fully open and another outlet half open (for example, in a bathroom).
Refer to Section 12.2.
The outlet chart is divided into four columns as follows:
A.
The maximum number of outlets that should remain fully open for a ceiling outlet system.
B.
The typical number of outlets for a floor outlet system.
C.
The minimum number of outlets that should remain fully open for floor/ceiling systems where the system does
not have zone dampers installed or, where there are zone dampers but these zones are not operated from a
networker thermostat (e.g. wall switches).
D.
(Adaptive Zoning Only) The minimum number of outlets that should be fully open for floor/ceiling systems with:
• zone dampers installed,
• zone control via a networker thermostat using on-board zone relays or a Network 516 module, and
• adaptive zoning active (hence minimum outlet number is reduced).
NOTE
•
Refer to Column D only when the networker has been configured for adaptive zoning.
Otherwise, refer to Column C.
•
For ZonePlus configurations, refer to the ZonePlus Installation Manual.
•
Airflow figures are based on a total static pressure of 125Pa for 30 and 35 models and 50Pa for
other models.
DUCTING AND OUTLETS
