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Pre-Startup Checklist
Pre-Startup Checklist
Before starting the “EC” PURE Humidifier Co. Electric Humidifier, check the following installation items:
______ 1. MOUNTING - Verify that the humidifier evaporating chamber is securely supported and that the
evaporating chamber is level in both directions.
______ 2. INJECTION TUBE - Verify that the humidifier injection tube is mounted within the duct with the proper
pitch back to the humidifier (2”/5 cm per foot / 31 cm). NOTE: If the humidifier evaporating chamber or
the flexible 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 humidifier tube(s). Any other control sensors should be at least 10 feet
downstream from the humidifier tube(s). Smoke detectors should not be installed downstream of the
humidifier tube(s). If a smoke detector absolutely has to be installed downstream from the humidifier
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 humidifier. Verify that the supply water pressure is 35-60 psi.
There should be at least 5 feet of metal pipe and check valve between the tank and any plastic pipe.
_____ 6. 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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