Document No: HT-IOM
Date: 04/09/2020
HEATED PRODUCTS SUPPLEMENT
Electrically Heated Products
Electrically heated products must be mounted on the
inside of the building. Electrically heated products come
standard with a thermostat (provided and shipped loose,
unless ordered as factory pre-mounted) and is to be field
installed at eye level within 3 feet (1 M) of the unit.
Note:
1. Electrically heated Low Profile, Phantom, Standard2,
High Velocity2 and Extra Power2 units come with
internally mounted controls and comes with 24V
control circuit as standard option (FIG. 1) except the
Low Profile series that is available with an optional
24V controls with line voltage, 115V or 208-240V
controls as typical offering.
2. Wiring connection for the electrically heated Low
Profile units is at the top of the housing which can be
accessed by removing the top cover plate while
internal terminal blocks are provided for electrically
heated Phantom, Standard2, High Velocity2 and
Extra Power2 units.
3. Electrically heated Wind Stopping and WindGuard
units include an electric heater control panel
mounted on the right-hand side, as standard.
Optional motor/unit control panel available, which
includes a remote 24-volt thermostat with On/Off
switch with terminals provided.
The thermostat should be mounted as close to the
product’s discharge air flow as possible in order to best
sense the discharged air temperature around the door
opening. Connect proper voltage to the product per local
and NEC codes.
Thermal overload protection is built into the heater coil
assembly/assemblies. In the event of an overload
condition, electrical power will be disconnected from the
heater coil. Upon diagnosing the problem, electrical
power can be re-instated to the heater coil(s) by
manually resetting the thermal overload lever(s) or
buttons(s) located in the unit or panel.
To operate multiple units mounted side by side, utilizing
a single door switch and single thermostat, a
master/slave configuration is required. (FIG. 2)
For high ampacity units, new holes can be drilled to bring
in electrical wires. Use appropriate bushing for new holes
to protect wire casing. High temperature silicon wires
would be recommended for main supply power.
FIG. 1 (Electrically Heated STD2 unit)
FIG. 2 (Tandem Mounted Master/Slave Units)
NOTE
Before proceeding, refer to the units specific IOM Manual for safety, installation and start information. Verify
proper voltage to the product per local and NEC codes. Ensure proper rotation for units with three phase
motors.
Unobstructed clearance space of 18”-24” must be
provided at the top of air curtain for performance and
service for all heated air curtain.
