Desa (V)T36NA Model BKT Installation, Plug in blower power cord to duplex outlet

Fireplace

Installation

Continued

9.Check to make sure power cord is completely clear of blower wheel and there are no other foreign objects in blower wheel. Turn blower on and check for operation. Turn blower off by turning knob fully counterclockwise before continuing.

10.Peel off backing paper and stick supplied wiring diagram decal on firebox bottom approximately 12" in front of blower (see Figure 27).

Wiring Diagram

Decal 12" in Front

of Burner

Figure 27 - Location of Wiring Diagram Decal (Model May Vary from Illustration)

Model BKT Installation

Note: When installing BKT thermostatically- controlled blower, you must first secure thermal switch bracket to blower if it has not already been factory installed.

1.Place green ground wire with ring terminal be- tween bottom hole on thermal switch bracket and top ear hole on blower assembly. Insert phillips screw into all three pieces and tighten securely (see Figure 28).

2.Connect wire harness and power cord ter- minals. Connect blue jumper wire to blower motor terminal and right side terminal of thermal switch. Connect black wire to left side of thermal switch and white wire to other remaining blower motor terminal.

Note: Power cord outer insulation sleeve may have to be stripped slightly to allow enough wire length to reach and make all connections. DO NOT trim excessive length away. Just enable enough to make all connections securely.

3.Place blower against lower rear wall of firebox outer wrapper with exhaust port directed up- ward and thermodisc positioned up near fire- place bottom. Thermodisc must be oriented near fireplace bottom as shown in Figure 28 in order to sense temperature and properly operate. Blower will be held in position against back wall by magnets incorporated onto blower housing (see Figure 28).

4.Be certain that all wire terminals are securely attached to terminals on blower motor and thermal switch, and that screw for thermodisc bracket and green ground wire is tight.

5.Mount speed control box against mounting plate provided in lower fireplace cavity by placing plastic control shaft forward through round hole (see Figure 26, page 18).

6.While supporting speed control, secure control shaft with lock nut by pushing and turning lock nut with pliers clockwise until it is tight against mounting plate. Place control knob provided on shaft (see Figure 26, page 18).

7.Check to make sure power cord is completely clear of blower wheel and that no other foreign objects are in blower wheel. Also double check all wire leads and make sure wire rout- ing is not pinched or in a precarious position. Correct accordingly.

8.Turn on power to duplex outlet if previously turned off per warning in column 1, page 18.

9.Plug in blower power cord to duplex outlet.

10.Blower will only run when speed control knob is in ON position and thermal switch senses tem- perature after fireplace begins to heat up. Blower speed can be adjusted by rotating control knob. To turn off, turn knob fully counterclockwise until it clicks off. If blower is ON and has been running with fireplace operating, blower will continue to run for a short time after fireplace has been turned off. As thermal switch cools down, blower shuts down automatically.

Power Cord		White Wire
Thermal		Blue Wire
		Magnetic
Switch
		Strips
Bracket
		Air Flow
		Direction
Black
Wire
Phillips	Thermal	Ring
	Switch	Terminal on
Screw		Green Wire

Air Flow
Direction	Magnets
Thermodisc
Route BKT Blower
Through This Area
Side View Firebox Bottom	Blower

Figure 28 - Blower Model BKT

111250-01E www.desatech.com 19