SKG4-E Gas Fired Humidifier
Installation Instructions and User Manual
Page | - 33 -
Stage 6 - Combustion Air Installation
Combustion and room ventilation air must conform to local codes and regulations.
Any installation work must be carried out by suitably qualified personnel.
Air for combustion must not be contaminated by halogens, ammonia, bromides, chlorides,
fluorides, iodides or dust. Excessive exposure of humidifier to these contaminants will result in
performance related problems. A humidifier that may be operated in toxic environments must
be equipped with ducted combustion air installation.
The operation exhaust of fans such as ventilation fans or other combustion appliances can
create a negative pressure condition on the humidifier. Adequate air supply must be provided
for the ventilation devices, in addition to that required by the humidifier.
Any installation work must be carried out by suitably qualified personnel.
With the exception of ducted combustion air installation, do not locate units in tightly sealed
rooms or small compartments.
Combustion and ventilation air must be supplied through one permanent low-level and one
permanent high-level opening communicating directly with the outside air.
The location of the air intake(s) must be at a sufficient height above ground level to prevent
blocking due to accumulated debris.
The supply air intake vent(s) must be equipped with a weather cap and bird screen, in order
to prevent gusts of wind or water from entering, preventing mold build up or leakage in the
ducts.
The SKG4 humidifier has filtered air openings through the front door. Do not block or obstruct
the humidifier air openings.
The humidifier is factory adjusted for correct performance. Do not alter throttle setting or
restrict blower combustion air inlet.
Combustion Air Specification - Natural Ventilation
Table 10 - Natural Ventilation Installation Openings
Model
Number of
Modules
Natural Ventilation Installation
Minimum Low Level
Opening
– Inlet (cm
2
)
Minimum High Level
Opening
– Outlet (cm
2
)
SKG4-E0501 N/P
1
540
270
SKG4-E0701 N/P
1
558
549
SKG4-E0801 N/P
1
567
554
SKG4-E1001 N/P
1
743
641
SKG4-E1202 N/P
2
770
655
SKG4-E1502 N/P
2
954
747
SKG4-E1702 N/P
2
1031
785
SKG4-E2002 N/P
2
1215
878
SKG4-E2503 N/P
3
1427
983
SKG4-E2703 N/P
3
1503
1022
SKG4-E3003 N/P
3
1688
1114
SKG4-E3504 N/P
4
1899
1220
SKG4-E3704 N/P
4
1976
1258
SKG4-E4004 N/P
4
2160
1350
Note 1: The information contained in the above table is from BS 6644, Specification for the
installation and maintenance of gas-fired hot water boilers of rated inputs between 70 kW
(net) and 1.8 MW (net).
Note 2: These minimum openings section are specified for the combustion air requirement
of the SKG4 Humidifier. If other gas fired appliances are installed in the same room, the
openings will have to be increased to be able to supply adequate combustion air for all of
the appliances.
Note 3: For comparison with minimum flue gas venting spacing, refer to Stage 7.
Summary of Contents for SKG4-E Series
Page 70: ...Notes ...
Page 71: ......
