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WARNING
Disconnect heater from power supply at fuse box before opening enclosures or servicing heater. Lock the switch in the
"OFF" (open) position and/or tag the switch to prevent unexpected power application.
G E N E R A L
1.
Use only copper conductors and approved explosion-proof wiring
methods during installation. Refer to the “Technical Data” table and
heater data plate for conductor rating.
2.
External overcurrent protection is required. Refer to the “Technical Data”
table and heater data plate for voltage, frequency amperage, and phase
Supply voltage is to be within 10% of the data plate voltage.
3. The heater must be installed by qualified personnel in strict compliance
with the electrical code.
4. All heaters come factory prewired and ready for direct connection to the
power supply leads.
5.
Heater control box may be supplied with two 1"-11.5 NPT conduit entries
for field wiring. All unused openings shall be closed off with supplied
conduit plug.
6.
The heater must be individually fused, preferably with Class J time-delay
fuses for maximum safety. Unless stated otherwise in your local code,
fuse size shall be 125% of the line current or next size larger.
F I E L D W I R I N G
1.
The supply conductors, ground conductor, and room thermostat
conductors (see point 2, page 4) all pass through the 1” NPT opening
(see Figure 4) and are to be wired into the control enclosure (see Figure
5 ).
2.
Heater may be supplied with a factory installed built-in room thermostat
On heaters not supplied with this option, it is recommended that a
remote room thermostat be used. Connect the remote room thermostat
conductors to the printed circuit board terminal block marked “TSTAT”.
Any thermostat used with this heater must:
a. be of an explosion-proof type,
b. be rated 125 V minimum,
c.
have a minimum 2 amp capacity, and
d. open on temperature rise.
ELECTRICAL
F I N A L I N S P E C T I O N
1. Before application of electrical power:
a. Check that all connections are secured and comply with
the applicable wiring diagram (see Figure 7) and code
requirements,
b. Confirm that the power supply is compatible with the data
plate rating of the heater,
c. Remove any foreign objects from the heater,
d. Install all covers and verify that all enclosures are well
secured, and
e. Ensure that the fan rotates freely. See Figure 5 for proper
direction of fan rotation.
FIGURE 6
Do not install conduit below heater (see Figure 5).
FIGURE 7
Summary of Contents for FX4 Series
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