This heater is specifically designed for frost protection. It is approved for use in unclassified locations
in accordance with the National Electrical Code (NEC), ANSI/NFPA 70. It is not approved for
residential heating.
Models FP052TB and FP102TB can be connected to 240 or 208 volts.
Model FP051TB is for 120 volts only. Please don’t assume you have 120 volts because your wires are
black and white.
This heater must be installed by a licensed electrician in accordance with these instructions and all
local codes, or in their absence, in accordance with the latest editions of the International Residential
Code and International Electrical Code. Always disconnect the heater from its power source before
servicing. Ensure that the heater is installed in a location to allow ease of access for repair and
maintenance.
INSTALLATION INSTRUCTIONS
Mount the heater to a rigid, non-combustible surface. There are six holes located on the mounting
surface. Please use any two holes that are as far apart as practical. For a crawl space, mount to the
concrete foundation wall. The heater may be mounted on brick or concrete block. The heater must be
mounted in a space with adequate venting and ground insulation that meets or exceeds local building
codes.
In the absence of a local building code, the heater can only be mounted with the following conditions:
1. Only crawl spaces under 1-story or 2-story portions of dwelling units shall be used.
2.
Enclosing material in crawl spaces shall have a surface flame-spread rating not greater than 150.
3. Combustible ground cover used as enclosing material in Sentence (2) shall be covered with non-
combustible material. Non-combustible material shall,
(a) extend not less than 12 inches (30 cm) beyond the projection of a register opening, and
(b) have turned-up edges.
OVERVIEW
0" minimum
to adjacent
surface
3" (7.6 cm) minimum;
24" (60.9 cm) maximum to floor
12" (30.4 cm) minimum above
0" minimum
to adjacent
surface
Clearances
Do not block the inlet vents on the bottom surface. There must be a minimum of 3 inches (7.6 cm)
below the bottom vents and 12 inches (30.4 cm) above the top vents for proper airflow and heating.
KNOW YOUR VOLTAGE and CHECK YOUR BREAKER!
All heaters require three supply wires. For 120 volt wiring you will have 1 hot, 1 neutral and 1 ground.
For 240 and 208 volt wiring you will have 2 hot wires and 1 ground; no neutral needed.
1. Turn off the electrical power supply. If required, install a new circuit breaker and route electrical
wires to the heater.
2. Remove the cover. Wire connections are made on the left side of the heater.
3. Install all necessary conduit and connectors (not included). Rigid or flexible conduit may be used.
Leave 6 inches (15.2 cm) of available supply wire for connecting to the heater. The field wiring must
include a ground wire connected to the inside of the junction box.
4. Pull supply wires through the conduit leaving 6-inch wire leads.
Connect one supply wire to one of the heater wires with a wire connector (not included).
a. For 240 and 208 volts, it doesn’t matter which heater wire. Both supply wires (black and white)
are hot. Wrap supply (white) wire with black tape to identify it as hot
b. For 120 volts, connect the neutral (white) supply wire to the white heater wire.
5. Connect remaining supply wire to remaining heater wire with a wire connector (not included).
6. Install the cover. Turn power back on at the main disconnect panel.
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