Installation, Operation and Maintenance Manual
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24
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NOTICE
Condensation formation and frequent humidifier flushing are normal
functions of this equipment. Proper drain connections must be made to ensure
proper removal. Unit will require water connections for condensate removal
and possibly for humidifier makeup water, condenser water, chilled water
and/or hot water. Installation of units above equipment that could sustain
water damage should be avoided.
Do not expose drain line to freezing temperatures. Drain line may contain boiling water therefore use copper or
other suitable material. Drain line must comply with local building codes. It is recommended to install under-floor
leak detection equipment whenever possible.
NOTICE
The condensate drain MUST be connected to an external drain line
(provided by others) before unit start up. It is the responsibility of the installer
to ensure that the equipment is draining correctly and that it meets all local
codes.
Drain lines must be inspected regularly and maintenance must be performed to ensure that drain lines are clear
and condensation runs freely through the drain system. The lines must be clear and free of obstructions and in
good condition with no visible sign of damage or leaks.
Humidifier Piping
The optional humidifier on gPod systems is a steam generator type with disposable cylinder. The humidifier make-
up water should be
brought to the humidifier through the field connection opening using 1/4” copper tubing. A
compression fitting is provided at the humidifier. A field provided shut-off valve should be installed outside the unit
to allow disconnection of service. A field provided in-line water pressure regulator and strainer should be installed.
NOTICE
Do not supply steam generating humidifier with demineralized,
deionized, RO, or distilled water. Electrode steam humidifiers rely on dissolved
salt and mineralized ions to pass current for steam production. Do not use hot
make up water as a source. Supply water is recommended at 30 to 80 PSIG and
150-1200 Microsiemens (Hardness 0-12 GPG).
The humidifier has a drain at the bottom which is factory piped to the main condensate drain line. The dispersion
tube also has a drain line. No additional field piping is required.
Leak Testing
No installation is complete until the entire system has been thoroughly checked for leaks. This includes checking
refrigerant tubing, flare fittings, pressure controls, Schrader fittings and compressor Rotolock type service valves.
Check both field and factory connections.
In addition to the refrigeration system, check all condenser water lines, humidifier make-up lines, condensate lines,
condensate pumps, chilled water lines, centrifugal pumps, and fluid coolers as applicable.
When handling or recovering refrigerant, it is not permissible to release refrigerant into the atmosphere. Many
leak-test methods recommended in the past are no longer possible. Current standard practices must be used.
Pressurize system circuit to 150 PSIG (1034 kPa) by using dry nitrogen with a trace of refrigerant. Check the entire
system for leaks with suitable leak finder (per local code) including but limited to all braze joints, caps, fittings and
