CLCH-SVX014B-EN
17
Wiring
Wiring Checklist
•
All field wiring must be in accordance with the National
Electric Code and state and local requirements.
•
All wiring (including low-voltage wiring) must be
copper conductors only with the insulation rated for
600 volts.
•
Refer to the nameplate located on the gas heater
section for the proper Input Voltage, Minimum Circuit
Ampacity (MCA) and Maximum Overcurrent
Protection (MOP) requirements for proper electrical
installation.
•
Input voltage must be /- 10 percent of specified
value.
•
Ground the supply power in the junction box to the
ground lead provided.
•
Do not route any wires through the heat exchanger
section unless the insulation is rated for 600?F or
higher. Radiant heat from the heat exchanger will
damage wire insulation that is unsuitable for high
temperatures.
•
See table in the next section for electrical
specifications.
Note:
Factory wiring routed through the heated part of
the cabinet has insulation rated for 600°F.
High-Voltage Wiring
Wiring Entrance Locations
Indoor air handlers can accept conduit penetrations on
any side of the piping vestibule. For outdoor air handlers,
the recommended conduit entrance into the gas heat
section is through the floor of the piping vestibule.
Terminate conduits on the power junction box or gas
heater control panel as appropriate.
Single-phase 120, 208, 230, 460 or 575 volt power is
required to operate the heater controls or power the
transformer (TRANS1), if provided.
Single-phase power for 208, 230, 460, and 575 voltage is
provided for the gas heat off two legs of the three-phase
supply to the air-handling unit. A transformer in the piping
vestibule is provided to step down the voltage required for
gas heat.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the
power can not be inadvertently energized.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage.Unit terminals are not designed to
accept other types of conductors.
Table 4.
Motor and electrical specifications
Specifications
Gas Heater Input Power
Inducer Motor
(a)
Control Power
(a)
Volts
115
115
Hertz
60
60
60
Phase
1
1
HP
n/a
n/a
FLA/Amps
n/a
6
(a) Powered by a “line to 115 volt” transformer for all gas heaters except 115/60/1 rated units.
Содержание CSA004
Страница 24: ...24 CLCH SVX014B EN Wiring Diagrams Figure 12 Typical wiring diagram for 5 1 turndown heater ...
Страница 25: ...Wiring Diagrams CLCH SVX014B EN 25 Figure 13 Typical wiring diagram for 10 1 turndown heater ...
Страница 26: ...Wiring Diagrams 26 CLCH SVX014B EN Figure 14 Typical wiring diagram for 20 1 turndown heater ...