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INSTALLATION INSTRUCTIONS
CAUTION
-
Install the heater according to the minimum clearances in Figure 3, Item C and in Figure 4.
-
This heater must not be installed in an area where the top trench grille may be obstructed by various
objects such as a door, curtains, rugs, towels or furniture.
-
This heater must not be installed in a location where it can be exposed directly to an accumulation of
liquids and/or foreign objects (E.g.: dirt, snow, water, ice melt products).
-
Disconnect all power supplies before working on any circuit.
-
Replace the heater cover and the top trench grille before testing.
INSTALLATION
1- Make sure that the dimensions of the previously fabricated trench meet the minimum dimensions and that
the model of the top trench grille is compatible with the power per linear foot indicated in Table 1 and
Figure 3.
2- This heater must be installed inside a trench under a floor. Figure 3.
3- Unscrew and remove the heater cover.
4- Place the heater on the bottom surface of the trench and position it respecting the minimum clearance
distances from the internal surfaces. Figure 3, Item C and Figure 4.
5- Remove the appropriate knockout from the recess box for the electrical supply.
6- Secure the bottom of the heater using appropriate screws (not supplied). Figure 2, Item A. If the trench is
made with concrete, pre-drill holes before installing the heater.
7- Pull through about 8 in. (204 mm) of supply wire.
8- Connect the heater leads to the supply leads according to local and national codes. Refer to the Wiring
Diagram.
9- Install and screw the heater cover.
10- Install the top trench grille (not supplied) according to the applicable manufacturer's installation
instructions. Make sure that no parts such as grille or grille frame (not supplied) is in contact with the
heater when installed. The compatible top trench grille must cover the entire length of the heater.
11- Make sure that the heater is free of any foreign objects.
12- To test the heater, temporarily set the thermostat at maximum temperature.
Table 1 - Models of compatible top trench grilles
Manufacturer
Grille Model
49-240
49-241
Nailor Industries
49-243
www.nailor.com
49-280
49-281
LBP/LBPH 15B
Price Industries
LBP/LBPH 16B
www.priceindustries.com
LBP/LBPH 25C
Manufacturer
Grille Model
Jaga
BNC/BNA
www.jaga.com
NOTE: Vanes or deflectors options with grille are prohibited.
Trench dimensions - Figure 3
W : 10'' (254 mm) minimum
W : 10'' (254 mm) minimum
D : 6
to
7 15/16'' (153
to
202 mm)
D : 8'' (204 mm) minimum
C : 2 1/2'' (64 mm) minimum
C : 2 1/2'' (64 mm) minimum
Power per linear foot
Power per linear foot
167W/ft.
200W/ft.
250W/ft.
167W/ft.
√
₋
₋
√
√
₋
₋
√
√
₋
₋
√
√
√
₋
√
√
√
₋
√
√
√
₋
√
√
√
₋
√
₋
₋
₋
√
Trench dimensions - Figure 3
W
D
: 11'' (280 mm) minimum
: 5 1/8'' (130 mm) minimum
C
: 3'' (76 mm) minimum
Power per linear foot
167W/ft.
200W/ft.
√
√
Figure 2
Compatible top trench grille
(not supplied)
Grille frame
(not supplied)
Heater cover
Heater
Trench
Figure 3
Trench dimensions
W
C
200W/ft.
250W/ft.
√
₋
√
₋
Wiring Diagram
√
₋
√
√
√
√
L1
√
√
√
√
L2/N
GND
₋
₋
250W/ft.
√
A
A
Figure 4
Minimum clearance distances
from the internal components
D
25.4 mm (1'') min.
C
Manual
Automatic
Hi-limit
Hi-limit
Connection of the power supply on the left side
Manual
Automatic
Hi-limit
Hi-limit
Connection of the power supply on the right side
A
Screws
(not supplied)
25.4 mm (1'') min.
Elements
Elements
L1
L2/N
GND
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