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NOTE:
Do not supply steam generating humidifier with softened water.
Also, do not use hot water source.
2.27. 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
leak- age 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.
2.28. 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 contractor
must determine a more appropriate area (in accordance with NEC and/or local code) for these
opening and manually make the opening in the sheet metal cabinet and/or electrical control box.
Connect the electrical facility power to the input terminal block or optional disconnect switch.
The wiring diagram for each unit is located on the inside of the electrical panel door.
All field wiring should be done in a professional manner and in accordance with all governing
codes. Before operating unit, double check all wiring connections, including the factory
terminals. Factory connections can vibrate loose during shipment.