SKG4-N Gas Fired Humidifier
Start-up Check List
SKG4-N Start-up Check List - 180807
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Start-up Procedure
Initial verification and start-up must be carried out by suitably qualified personnel.
It is strictly recommended to follow this start-up procedure in order to avoid any anomaly resulting from inaccurate
installation of the components.
Initial Verification
Clearance
1. Ensure that the humidifier cabinet is installed in a location in which the humidifier
can be serviced correctly.
Electrical Supply
2. Verify that the power supply (voltage) conforms to the appliance name plate on
the side of the humidifier.
3. Confirm that 24Vac is present between terminals TB4 1&2 on the control
connection PCB. Remove the front top cover to get to this PCB.
Water Supply
4. Ensure that water is supplied to the humidifier and that a shut-off and a non-
return valve are placed outside the humidifier.
5. With the water shutoff valve turned on, check that the drain connections are
connected to the main drain line with sufficient diameter. Ensure that there are
no apparent leaks.
6. Confirm that the drain piping is properly connected with a pitch of at least
¼”
(6.5mm) per foot (300mm) horizontal run.
Steam
7. Verify that the steam distributors are properly installed into the ventilation duct.
8. Verify that the flexible steam hoses and rigid steam supply pipes are shorter than
16ft (5 m) in total, are properly sloped and have condensation
“S” traps wherever
required.
Gas Supply
9. Confirm that a proper regulator and gas test point have been installed on the gas
line to the humidifier.
10. Confirm that gas is supplied to the humidifier and that the shut-off valve located
outside the humidifier is closed. With the shut-off valve is turned on, check for
leaks, gas, smell or hissing sounds.
Flue Gas Venting
11. Verify that the flue gas venting is as follows:
a) Ensure that a tee is installed with a drain trap for the flue gas condensate.
b) Check that all connections are air tight.
c) Ensure that the total length of the flue gas venting pipe is no longer than
100ft (30 meters).
d) An approved venting system is used, such as one of the following:
Chiminee 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 approved system, please specify (for reference) __________
_____________________________________________________
Note: Aluminum B vent is not acceptable
.
Controls
12. Ensure that the Airflow switch is properly installed and connected to the printed
circuit board. If an Airflow switch is not used, verify that a jumper is connected
between terminals TB3 1&2.
13. Ensure that the High limit duct humidistat is properly installed and connected to
the printed circuit board. Verify that the setpoint is properly adjusted. If a High
limit duct humidistat is not used, verify that a jumper is connected between
terminals TB3 1&3.
