DRI-STEEM XT Series Electrode Steam Humidifier Installation, Operation, and Maintenance Manual • Page 11
Field wiring
Humidifier field wiring
All wiring must be in accordance with all governing codes and
with the unit wiring diagram. The unit wiring diagram is inside the
electrical control cabinet. Power supply wiring must be rated for
105 °C.
When selecting a location for installing the humidifier, avoid
areas close to sources of electromagnetic emissions such as power
distribution transformers.
Do not loop power wiring.
Do not use aluminum wire.
Field wiring connections and requirements
Conduit knockouts are provided on the bottom of the electrical
control cabinet. Control wiring knockouts are on the bottom front;
power wiring knockouts are on the bottom rear.
CAUTION! Adding alternate conduit connections is not
recommended; however, if making holes and knockouts in the
humidifier cabinet, protect all internal components from debris
and vacuum out cabinet when finished. Failure to comply with this
caution can damage sensitive electronic components and void the
DRI-STEEM warranty.
Control component placement
Follow the guidelines on Page 13 for placing humidistats,
transmitters, and airflow proving switches.
More on the next page ▶
d
Notes:
• Control wiring and power wiring must be run
in dedicated or separate earthed metal conduit,
cable trays, or trunking.
• Separate the line voltage wiring from low voltage
control circuit wiring when routing electrical
wiring inside the humidifier cabinet.
• Do not use chassis or safety grounds as current-
carrying commons. Never use a safety ground as a
conductor or neutral to return circuit current.
OM-7363
Fused
disconnect
Power
supply
Figure 11-1:
Field wiring requirements
WARNING!
Only qualified electrical personnel should
perform field wiring installation procedures.
Improper wiring or contact with energized
circuits may cause property damage, severe
personal injury, or death as a result of
electric shock and/or fire.
Humidifier
XT_IOM_Jan_2008.pdf 13 11/19/2009 10:13:34 AM
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