TM
EC Pre-Startup Procedure
Pre-Startup Checklist
Before starting the EC PURE Humidifi er Co. Electric
Humidifi er, check the following installation items:
_____ 1. MOUNTING - Verify that the humidifi er
evaporating chamber is securely supported and that the
evaporating chamber is level in both directions. If humidifi er
is installed above equipment or not located near a fl oor drain
than a drain pan should be installed below the humidifi er
steam generator.
_____ 2. INJECTION TUBE - Verify that the humidifier
injection tube is mounted within the duct with the proper pitch
back to the humidifi er (2”/5 cm per foot / 31 cm). NOTE:
If the humidifi er evaporating chamber or the fl exible hose
(optional) is mounted higher than the injection tube, a drain
“tee” is required to drain the condensate out of the injection
tube steam line. If it is an Insty-Pac or Fast Pac refer to the
respective O&M to determine if they are mounted properly
and have the proper p-trap size.
_____ 3. ELECTRICAL - Verify that all wiring connections
have been connected in accordance with the wiring diagram.
CAUTION: Live power may exist in the control cabinet.
Turn off the main power at the disconnect switch before
verifying the electrical connections!
_____ 4. SAFETY CONTROLS – The supply air duct RH
high-limit should be installed at least 10 feet downstream
from the humidifi er tube(s). Any other control sensors should
be at least 10 feet downstream from the humidifi er tube(s).
Smoke detectors should not be installed downstream of the
humidifi er tube(s). If a smoke detector absolutely has to
be installed downstream from the humidifi er tubes then it
should be installed as far from the tubes as possible.
_____ 5. PIPING: Water Supply - Verify that all piping
connections have been completed as recommended and
that water pressure is available to the humidifi er. Verify that
the supply water pressure is 35-95 psi. There should be at
least 5 feet of metal pipe and check valve between the tank
and any plastic pipe.
_____ 6. PIPING: Drain - Make sure a water seal of the
proper height (refer to steam generator O&M for height) is
provided in the drain line.
_____ 7. PIPING: Steam Outlet - Refer to attachment for
proper outlet steam piping from the generator to the tube(s).
Any horizontal to vertical up transition in the outlet
steam pipe requires a water-sealed drip leg! Improper
outlet steam piping will cause steam to leak from the steam
generator. Runs over 20 feet long may require upsizing of
the steam pipe.
Signature:_______________________ Date:_________
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