Desa CHDV34(N/P)(A) Fireplace Installation, Check GAS Type, Installing Optional Blower Accessory

CHDV34(N/P)(A)

DIRECT-VENT FIREPLACE (NATURAL/PROPANE)

FIREPLACE INSTALLATION

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri- mary heating system. Do not in- stall this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circu- late the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.

NOTICE: A qualified service per- son must install fireplace. Follow all local codes.

CAUTION: This fireplace cre- ates warm air currents. These cur- rents move heat to wall surfaces next to fireplace. Installing fire- place next to vinyl or cloth wall coverings or operating fireplace where impurities (such as to- bacco smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in the air exist, may discolor walls.

Note: Your fireplace is designed to be used in zero clearance installations. Wall or fram- ing material can be placed directly against any exterior surface on the rear, sides, or top of your fireplace, except where stand-off spacers are integrally attached. If stand-off spacers are attached to your fireplace, these

CHECK GAS TYPE

Use proper gas type for the fireplace unit you are installing. If you have conflicting gas types, do not install fireplace. See re- tailer where you purchased the fireplace for proper fireplace according to your gas type.

INSTALLING OPTIONAL BLOWER ACCESSORY

NOTICE: If installing blower in an existing fireplace with gas con- nections, shut off gas supply and disconnect heater from gas sup- ply. Contact a qualified service person to do this.

Attaching Thermal Switch to CDA3620T Thermostatically Controlled Blower

When installing the CDA3620T thermo- statically 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 29.

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 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.

Installing GA3750/CDA3620T Blowers

IMPORTANT: For clarity, gas valve assem- bly and grate/burner assembly are not shown in Figures 30 through 33, page 17. They will, however, be in your fireplace when you are installing the blower. Also for clarity the firebox is shown with dotted lines.

1.Open lower louver panel or remove for easier access.

2.Place the blower against the lower rear wall of firebox outer wrapper with the exhaust port directed upward. Align the holes in the top mounting tabs of blower with holes in wall of wrapper (see Figure 30, page 17). Using the two screws provided, mount blower and tighten screws securely.

Note: For CDA3620T, make sure the thermal switch is comfortably between the back of the firebox and the blower as shown in Figure 31, page 17.

3.Be sure to securely attach all wire ter- minals to terminals on blower motor (and thermal switch where applicable) and that the screw retaining the green ground wire is tight.

4.Remove screws securing the switch plate to the bottom of the firebox and set aside.

5.Place speed control against back of this plate and push the plastic control shaft through opening (see Figure 32, page 17).

6.While supporting speed control, secure con- trol shaft with lock nut by pushing and turn- ing lock nut with pliers clockwise until tight against the plate. Place control knob pro- vided onto shaft (see Figure 32, page 17).

7.Replace plate containing the switch and tighten screws securely.

spacers can be placed directly against wall or framing material. See framing details on page 4.

Place the fireplace into position and shim with noncombustible material if needed. Nail the side flanges to the framing to secure the unit in place. There are two floor brack- ets included with each unit. Use these as an alternative method of securing the fireplace.

IMPORTANT: Make sure fireplace is level before securing. If fireplace is not level it will not work properly.

Thermal Switch	White Wire
with Bracket	Blower Assembly

Black Wire

	Green Wire
Hex Head	Blue Wire
Screws

Figure 29 - Attaching Thermal Switch to CDA3620T Thermostatically Controlled Blower Accessory

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