SKG Gas Fired Humidifier
SKG Start-up check list 180223
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Initial Verification
Initial verification and start-up (commissioning) must be carried out by suitable
qualified personnel.
Clearance
1. Ensure that the humidifier cabinet is installed in a location where the humidifier
can be serviced correctly.
Electrical
2. Check that the power supply (voltage) conforms to the appliance name plate
on the humidifier side.
3. Confirm that 24Vac is present between tab 1&2 of the control terminal, located
on the control connection PCB. Remove the front top cover to get to this PCB.
Water
4. Ensure that water is supplied to the humidifier. A shut-off valve must be outside
the humidifier.
Once the water shut-off valve is turned ON, ensure that there are no apparent
leaks.
5. Confirm that drain piping is properly connected with a pitch of at
least ¼’’
(6.5mm) per foot (300mm) horizontal run.
Steam
6. Check that steam distributors are properly installed into the ventilation duct.
7. Verify that the flexible steam hoses and rigid steam supply pipes are shorter in
total length than 15ft (5m), properly sloped and have condensation P traps
wherever required.
Gas
8. Verify that a proper regulator and gas test point have been installed on the gas
line to the humidifier.
9. Confirm that gas is supplied to the humidifier and that the shut-off valve located
outside the humidifier is closed.
Once the shut-off valve is turned ON, check for leaks, gas, smell or hissing
sounds.
Flue Gases
Venting
10. Verify the flue gases venting as follows:
a) A tee is installed with a drain tee cap for the condensate.
b) Check that all connections are air tight.
c) The total length of the vent equivalent is not longer than 100ft (30m).
d) An approved venting system is used, such as one of the following:
Cheminee Lining HEP, HEPL or HEPL2 rigid venting system, or
Flexmaster Z-Vent Model SVE Series III rigid venting system, or
DuraVent FasNSeal (single-wall) or FasNSeal W2 (double-wall)
venting system, or
Magnaflex’s PV model insulated flexible venting system, or
Selkirk/HeatFab Saf-T Vent Model single-wall or double-wall venting
system, or
Other system, please specify (for reference) __________________
_____________________________________________________
Note:
Aluminum B vent is not acceptable.
Controls
11. Ensure that a high limit duct humidistat is installed, properly connected to the
humidifier and that the setpoint is properly adjusted.
12. Verify that a room or return air duct humidistat is installed, properly connected
to the humidifier and that the setpoint is properly adjusted.
13. Turn the power ON at the disconnect switch.
14. Confirm the control set-up of the humidifier (display #200). The humidifier is
factory set with EXTERNAL control set-up, which means that the humidity
demand is controlled by the room or duct humidistat.
15. Ensure that the type of signal (0-10Vdc, 2-10Vdc or 4-20mA) of the humidistat
corresponds to the type set in the humidifier control set-up menu (display #
201).
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