Heat Controller HTV Series - Electrical - Power Wiring

Heat Controller, Inc. HTV/HTD/HTH SERIES
24
ELECTRICAL - POWER WIRING
T
WARNING! Disconnect electrical
power source to prevent injury or
death from electrical shock.
⌧ WARNING! ⌧
Figure 9: HTV/HTD Single Phase Line
Voltage Field Wiring
Capacitor
Contactor CC
T
CAUTION! Use only copper
conductors for field installed electrical
wiring. Unit terminals are not
designed to accept other types of
conductors.
Unit Power Supply
See Electrical Table
for Breaker Size
⌧ CAUTION! ⌧
CXM Control
Low Voltage
Connector
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 contactor as shown in
Figure 9. Consult Table 4 for correct fuse
size.
BLOWER SPEED SELECTION
ECM Motor speeds are set via low voltage
controls (see “ECM Blower Control”). Most
Heat Controller units are shipped on the
medium speed tap. Consult Engineering
Design Guide for specific unit airflow tables.
Typical unit design delivers rated airflow at
nominal static (0.15 in. w.g.) on medium
speed and rated airflow at a higher static
(0.4 to 0.5 in. w.g.) on high speed for
applications where higher static is required.
Low speed will deliver approximately 85% of
rated airflow at 0.10 in. w.g.
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Transformer
Electrical - Power Wiring
Consult Engineering Design Guide for
specic unit airow tables.
Figure 9: HTV/HTD/HTH Single
Phase Line Voltage Field Wiring