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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.
NOTE: Do not supply steam generating humidifier with softened water. Also,
do not use hot water source.
Dry Steam Humidifier
The optional dry steam humidifier requires a strainer on the inlet steam line. An outlet
connection with field-provided steam trap is also required. Steam pressure is typical 10 to 15
PSI (69 to 103 kPa).
Leak Testing
WARNING: No installation is complete until the entire system has been
thoroughly checked for leaks. This includes checking the refrigerant
tubing, flare fittings, pressure controls, Schrader fittings and compressor
Rotolock service valves. Check both the field and factory connections.
In addition to the refrigeration system, check all condenser water lines, humidifier water
makeup lines, condensate lines, condensate pumps, chilled water lines, centrifugal pumps and
fluid cooler (where 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 the systems circuit(s) to 150 PSIG (1034 kPa) using dry nitrogen with a trace of
refrigerant. Check the entire system for leaks with a suitable leak finder (per local code)
including but not limited to all braze joints, caps, fittings, and flare nuts on both field and factory
furnished components. After completion of leak testing, release test pressure and pull a
vacuum on the system.
WARNING: Tightening of fittings and valves is the responsibility of the
installing contractor.
WARNING: With any fluid connection there is risk of leakage. Water
leakage could result in property damage to mission critical equipment. A
water drain connection is required. Units with optional steam generator
humidifiers will require an external potable water supply. Water leakage
can result from improper installation and/or practices.
Electrical Installation
The field power and control wiring should enter the unit cabinet and electrical control box in the
areas as provided on the unit. If these opening do not work as provided, the electrical
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