Heat Controller HBH Series Installation, Operation & Maintenance Manual page 20

IOM Manual
Electrical - Power Wiring
WARNING!
� WARNING! �
!
WARNING! Disconnect electrical power source to prevent
injury or death from electrical shock.
CAUTION!
� CAUTION! �
!
CAUTION! Use only copper conductors for field installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
Electrical - Line Voltage - All field installed wiring,
including electrical ground, must comply with the National
Electrical Code as well as all applicable local codes.
Refer to the unit electrical data for fuse sizes. Consult
wiring diagram for field connections that must be made
by the installing (or electrical) contractor. All final electrical
connections must be made with a length of flexible conduit
to minimize vibration and sound transmission to the
building.
General Line Voltage Wiring - Be sure the available
power is the same voltage and phase shown on the unit
serial plate. Line and low voltage wiring must be done in
accordance with local codes or the National Electric Code,
whichever is applicable.
Power Connection - Line voltage connection is made
by connecting the incoming line voltage wires to the "L"
side of the power block as shown in Figure 11. Consult
electrical data tables for correct fuse size.
Transformer - All 208/230 voltage units are factory wired
for 208 volt. If supply voltage is 230 volt, installer must
rewire transformer. See wire diagram for connections.
HBH SERIES
Figure 11: TCH 072-120 Line Voltage Wiring
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Power
Block
19
Heat Controller, Inc.