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3.4.1.2 Ventilation by Mechanical Evacuation
Ventilation by mechanical evacuation is sufficient if
10m
³
/h of exhaust air peer kW of operating heat input
are ventilated out of the installation room.
The air/products of combustion mixture must be evacuated above the radiant heaters using fan(s).
It shall only be possible to operate the radiant heaters whilst the exhaust airflow is proven.
The maximum horizontal distance between a radiant heater and a fan shall be:
6 (six) times the fan mounting height in the case of
wall
openings
3 (three) times the fan mounting height in the case of
roof
openings
Total minimum proven ventilation airflow in
m
³
/h
will be:
Total installed kW input X 10
Note:
Mechanical exhaust air openings must be positioned such that the burner stability of the nearest
appliance is unaffected.
3.4.1.3 Ventilation by Natural Air Change
Gas-fired radiant heaters may be operated without any special exhaust system if the exhaust gases are
discharged to the outside atmosphere by a sufficient natural air change in the installation room.
Furthermore, no provision for thermal or mechanical ventilation is required in the following particular cases:
Buildings with natural air change greater than 1.5 volumes per hour
Buildings with a density of operating heat input not greater than 5W/m
³
3.4.1.4 Air
Supply
Air supply openings are required to admit air and shall be located below the radiant heaters.
The total area of the unobstructed cross-sections of all the air supply openings shall not be smaller than the
total area of the unobstructed cross-sections of all the exhaust openings.
Slits and gaps of
fixed
cross-section can also be used as air supply openings.
Where the air supply openings can be closed, it shall only be possible to operate the radiant heaters when they
are open.
4.
Assembly
4.1
SRP08/SRP15/SRP22/SRP30 (Direct Burner Spark Ignition).
4.1.1
The appliance should be raised and suspended from chains or drop rods or from brackets fixed to vertical
surfaces which have been previously installed in accordance with section 3.1 - Suspension.
4.1.2
Connect the gas supply in accordance with Section 3.2. - Gas Supply, of these Installation Instructions.
4.1.3
Using twin core and earth flexible supply cable, as specified in Section 3.3.2, suitable for 230V ~ 50Hz 25W
supply, connect the 4 pin electrical socket provided (fitted to junction box, attached to the Control Valve) as
follows:-
Brown
-
to terminal marked 1
Blue
-
to terminal marked 2
Green/Yellow
-
to terminal marked
7
External fuse required - 3 amp.
See section 3.3 for electrical supply requirements.
Содержание SRP 08
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