OPTIONAL BLOWER INSTALLATION
Continued
4.Be certain that all wire terminals are securely attached to ter- minals on blower motor and thermal switch, and that the screw for the thermodisc bracket and green ground wire is tight.
5.Mount the speed control box by placing the plastic control shaft through the opening in switch bracket (see Figure 34, page 18) or the ignition module bracket (see Figure 35, page 18)
6.While supporting speed control, secure control shaft with lock nut by pushing and turning lock nut with pliers clockwise un- til it is tight against mounting plate. Place control knob pro- vided on shaft (see Figure 34 or 35, page 18).
7.Check to make sure that the power cord is completely clear of the blower wheel and that there are no other foreign objects 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 the warning in column 1, page 17.
9.Plug in blower power cord to duplex outlet.
10.The blower will only run when the speed control knob is in the ON position and the thermal switch senses temperature after the fireplace begins to heat up. The blower speed can be adjusted by rotating the control knob. To turn off, turn knob fully counter- clockwise until it clicks off. If the blower is ON and has been running with the fireplace operating, the blower will continue to run for a short time after the fireplace has been turned off. As the thermal switch cools down, the blower shuts down automatically.
11.Peel off the backing paper and stick the supplied wiring dia- gram decal on the firebox bottom approximately 6” in front of the blower (see Figure 36, page 18).
Power Cord | White Wire | |
Thermal | Blue Wire Magnetic | |
Strips | ||
Switch | ||
| ||
Bracket | Air Flow | |
| Direction |
OPTIONAL BLOWER INSTALLATION (Cont.) | 19 |
Models BK and BKT) |
WiIRING DIAGRAMS
Blower Wiring Diagram
Millivolt Ignition Wiring Diagram
Electronic Ignition Wiring Diagram
WIRING DIAGRAMS
CAUTION: label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
Variable | Fan Switch | |
Fan Switch | ||
|
| (N.O.) |
Off 1 | 2 | Black |
| On |
|
110/115 |
| Blue |
V.A.C. Black |
| Blower |
White |
| Motor |
Green
Figure 38 - Blower Wiring Diagram for Thermostatic-Controlled Models
| PILOT |
| MILLIVOLT WIRING SCHEME | ||
| BURNER |
| |||
|
|
|
|
| |
THERMO- |
| THERMOPILE |
| DO NOT | |
|
|
|
| ||
COUPLE |
|
|
|
| |
|
| REPLACE FACTORY WIRING WITH 105°C | CONNECT | ||
|
|
| TO 120V | ||
|
|
| EQUIVALENT OR HIGHER RATING | ||
|
|
|
| ||
|
|
| EXTERNAL WIRING USE ONLY CLASS 2 |
| |
|
|
| THERMOSTAT WIRE 18 GA. RED/WHITE |
| |
TO PILOT |
|
| RED |
|
|
SAFETY | PILOT SAFETY VALVE |
|
|
| |
VALVE | WHITE |
|
| ||
|
|
|
| ||
| LO |
| TH |
|
|
| ON |
|
|
|
|
| I |
| TP |
|
|
| FFO |
|
|
| |
| P |
|
|
|
|
INCOMING |
|
| TH/TP | WALL SWITCH |
|
|
|
|
| ||
MAIN GAS |
|
|
|
|
|
SUPPLY |
|
|
|
|
|
Figure 39 - Millivolt Ignition Wiring Diagram
Pilot
Burner
Black |
|
| |
Wire |
|
| |
Phillips |
|
| |
Screw |
|
| |
Thermal Switch | Ring Terminal |
| |
| on Green Wire | Air Flow Direction | |
|
| ||
|
| Magnets | |
Route BKT |
|
| |
Blower Through | Thermodisc |
| |
This Area |
|
| |
Side View Firebox Bottom | Blower | ||
Location | |||
|
| ||
GAS VALVE
EV1
EV2 
IGNITOR LEAD
ORANGE
RED
BLACK
BLACK
BLACK
BLUE
GREEN
SYNETEKCONTROLS MODELIS1070B | 24VAC |
|
| RED TRANSFORMER | |
|
| WHITE |
|
| BLACK |
INC | BLUE | GROUND |
| ||
|
| |
120 VAC
Figure 37 - Blower Model BKT
Figure 40 - Electronic Ignition Wiring Diagram
www.desatech.com |