17
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Humidifi er wiring
All wiring must be code approved and in accordance with the unit wiring
diagram. Power supply wiring must be rated for 105 °C. See Figure 17-1
for the humidifi er wiring diagram locations.
When selecting a location for installing the humidifi er:
• Avoid areas close to sources of electromagnetic emissions such as power
distribution transformers.
• Do not loop power wiring.
• Do not use aluminum wire.
CONDUIT KNOCKOUTS
Conduit and control wiring knockouts are provided on the XT Series humidifi er
cabinet. See Figure 5-1.
CONTROL COMPONENT PLACEMENT
Follow the guidelines on Page 19 for placing humidistats, transmitters, and
airfl ow proving switches.
CAUTION
Adding conduit connections not recommended
Adding alternate conduit connections is not recommended. If you must make
additional holes in the humidifi er cabinet, protect all internal components from
debris, and vacuum out the cabinet when fi nished. Failure to follow these precautions
can damage sensitive electronic components and void the DriSteem warranty.
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 humidifi er
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.
• For circuit protection requirements, see
recommended fusing in Table 4-1.
OM-7692
Fused disconnect
Power supply
XT Series humidifi er
Wiring
diagram
inside of
humidifi er
cabinet
WARNING
Electric shock hazard
Only qualifi ed electrical personnel
should perform fi eld 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 fi re.
INSTALLATION
FIGURE 17-1: FIELD WIRING
REQUIREMENTS