Brivis 19
Ducted Gas Heater IM
5. OUTLET CHART INFORMATION
The outlet chart (Table 4) 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 4 lists the
typical
number for each heater model.
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.
Note:
Airflow figures are based on the maximum fan speed setting at total static pressure of 50Pa for 15, 20 & 25 kW models, 125Pa
for the 30kW model.
Table 4. Outlet Register Chart
System Model
Airflow Rate (L/s)
A
B
C
Maximum No.
Ceiling Outlets
Typical No. Floor
Outlets
Minimum No. Floor/
Ceiling Outlets
CC315I V2
540
10
9
5
CC320I V2
540
10
9
5
CC320IXA V2
625
11
10
6
CC325I V2
600
11
10
6
CC325IXA V2
680
12
11
7
CC330I V2
920
13
16
8
CC330IXA V2
980
14
16
8
