Vermont Casting NV580 First Firing, Vent Safety Switch, Electrical Connection, NV360/580 Series

is not, turn the unit off and check for causes creating the lack of adequate draft.

Do not operate the unit until lack of ad- equate draft has been determined and rectified.

Test for Draft at This Location

	FP1197
Fig. 17	Draft test location.

First Firing

Upon completing the gas line connection, a small amount of air will be trapped in the line. When first lighting the unit with pilot light, it will take a few minutes to purge the trapped air. Once purging is complete, the pilot and burner will light and operate as indicated in the instruction manual. Subsequent lightings of the appli- ance will not require purging.

When lit for the first time, the appliance will emit a slight odor for an hour or two. This is due to paint and lubri- cants used in the manufacturing process. After each lighting, vapor may condense and fog the glass; this moisture disappears in a few minutes of burning.

Vent Safety Switch

This fireplace incorporates the use of a Vent Safety Shut-off Switch. The sensor and wiring are factory installed and should not be removed or altered during installation.

In the event of total flue blockage the system will detect the increased heat buildup and will automatically shut down the main burner assembly.

The sensor is located above the firebox behind the top louvre assembly. It is accessible by removing the top louvre assembly.

NV360/580 Series

CAUTION: The firebox, Vent Safety Switch sensor and surrounding panels become very hot during normal operation. Allow time for the components to cool before carrying out any service or inspection.

If the sensor is activated and shuts off the burner as- sembly, the following procedure should be followed:

•Observe that the pilot flame is still "ON". If the pilot flame has gone out the reason for the fireplace shut down is not the vent safety switch.

•Turn the pilot flame "OFF" and close all controls. Al- low the fireplace to cool.

•Check the flue and venting component for blockage or restrictions.

•Remove the front louvre assembly.

•Locate the sensor.

•Reset the sensor by pressing the reset pin between the two wire terminals. (Fig. 18)

CAUTION: The components may still be hot.

•Light the fireplace and check for downdrafts.

•Operate the fireplace in the normal manner. If the burner assembly shuts down again after a period of operation, DO NOT ATTEMPT TO RESET THE SENSOR AGAIN. Turn off the fireplace and contact your service technician.

Sensor

Wire Terminal Wire Terminal

Reset Pin

FP1160

Fig. 18 Vent safety switch.

Electrical Connection

The sensor is wired in series between the wall mounted "ON/OFF" switch and the Electronic Ignition Module (Fig. 19) or the thermopile and the gas valve (Fig. 20).

20003565 13