Desa CDVBN(A), CDVBP(A) Installing Optional Blower Accessory, Installing GA3750/CDA3620T Blowers

OWNER’S MANUAL

CAST IRON STOVE AND DIRECT-VENT BURNER SYSTEM ASSEMBLY

Continued

INSTALLING OPTIONAL BLOWER ACCESSORY

NOTICE: If installing blower in an existing stove with burner sys- tem with gas connections, shut off gas supply and disconnect burner system from gas supply. Contact a qualified service per- son to do this.

Attaching Thermal Switch to CDA3620T Thermostatically- Controlled Blower

When installing the CDA3620T thermostati- cally-controlled blower accessory, you must first secure the thermal switch to the blower.

1.	Remove the two hex head screws on the
	blower assembly as shown in Figure 15.
2.	Place the green wire between the bot-
	tom hole on the thermal switch bracket
	and the bottom hole on the blower as-
	sembly. Insert one of the hex screws
	into all three pieces and tighten.
3.	Insert the top screw through the ther-
	mal switch bracket and into the blower

Installing GA3750/CDA3620T Blowers

1.Align the holes in the top mounting tabs of blower with holes in wall of rear cover (see Figure 16). Using the 4 screws provided, mount blower and tighten screws securely.

Note: For CDA3620T, make sure the ther- mal switch has been properly installed to fit against the back of the burner system.

2.Make sure all wire connections to ter- minals on blower motor (and thermal switch where applicable) are securely attached and that the screw retaining the green ground wire is tight.

3.Place speed control on back wall inside of rear cover and push the plastic con- trol shaft through opening (see Figure 16).

4.While supporting speed control, secure control shaft with lock nut by pushing and turning lock nut with pliers clockwise until tight against the side of rear cover. Place control knob provided onto shaft (see Figure 16).

5.Plug in blower power cord.

6.Check to make sure that the power cord is completely clear of the blower wheel and that there are no other foreign ob- jects in blower wheel. Turn blower on and check for operation. Turn blower off by rotating knob fully counterclock- wise before continuing.

WARNING: Never touch the blower wheel while in operation.

7.Peel off the backing paper and stick the supplied wiring diagram decal on the inside of rear cover on right side oppo- site control.

WARNING: Failure to position the parts in accordance with sup- plied diagrams or failure to use only parts specifically approved with this stove and burner sys- tem may result in damage or per- sonal injury.

8.Connect or reconnect gas supply to stove and burner system per Connect- ing Stove/Burner System to Gas Sup- ply on page 19 of this manual.

WARNING: A qualified ser- vice person must connect burner system to gas supply. Follow all local codes.

	assembly. Tighten screw.
4.	Connect the blue wire on the blower
	assembly to the right side of the ther-
	mal switch.
5.	Connect the black wire to the left side
	of the thermal switch.

Black	White Wire	Blower
Wire
		Assembly
Thermal	Green
Switch
	Wire
with
	Blue Wire
Bracket
	Hex Head
	Screws

Figure 15 - Attaching Thermal Switch to CDA3620T Thermostatically-Controlled Blower Accessory

Blower	Speed Control
Control Knob	Control Shaft

Lock

Nut

Power Cord

Mounting Screws (Included in Hardware Pack)

Black
White Wire	Wiring
Wire	Diagram
	Decal

Blue	Green	Rear Cover
Wire
		Blower
	Ground Wire
Figure 16 - Installing Optional Blower Accessory (Thermostat Model CDA3610T
Shown)		Continued

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