NVC Series B-Vent

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.

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. Allow the fireplace to cool.

Check the flue and venting components 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 Ter-

 

minal

Wire Terminal

 

Reset Pin

 

FP1160

Fig. 18 Vent Safety Switch.

14

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)

WHITE

PILOT

HONEYWELL S8600 B IGNITION MODULE

BLACK

MV MVPV PV

GND

 

24V

24V

SENSE

SPARK

 

(BURNER)

GND

 

 

 

 

 

 

WHITE

 

 

 

 

 

 

 

 

 

 

 

WHITE

 

 

 

 

BLACK

 

 

 

 

 

BLACK

WHITE

 

 

 

 

 

 

 

 

 

 

 

BLACK

 

WHITE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

E

 

 

 

 

 

L

O

 

 

 

 

 

 

O

 

 

H

 

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

I

 

 

 

 

 

 

IH

 

 

 

 

 

T

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OLI

 

 

 

 

 

 

NOVA SIT 822 VALVE

 

 

 

 

 

 

 

 

 

BLACK

 

120 VAC RTN

 

 

24 VAC HOT

 

 

BLACK

 

 

 

 

 

 

 

 

WHITE

1

5

BLACK

 

 

WHITE

 

 

 

 

 

 

BLACK

3

4

WHITE

 

 

 

 

 

 

 

 

 

 

 

ON-OFF

120 VAC HOT

 

 

24 VAC RTN

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

GREEN40VA

TRANSFORMER

FP670

Fig. 19 Vent Safety Switch wiring, EN/EP units.

 

Thermopile

OnN/OFF

 

Switch

 

Vent

 

 

Safety

TH

 

Switch

Gas

 

TP

 

Valve

 

TH

 

 

 

TP

 

 

 

FP1161

Fig. 20

RN/RP units using a remote ON/OFF switch.

 

 

20000194

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Vermont Casting NVC39, NVC36, NVC43 warranty Vent Safety Switch, Electrical Connection

NVC39, NVC36, NVC43 specifications

Vermont Castings is known for its commitment to quality and craftsmanship, and its NVC series of gas stoves, including the NVC39, NVC36, and NVC43, exemplify this tradition. These models provide both warmth and aesthetic appeal, making them popular choices for homeowners seeking a blend of efficiency and style in their heating solutions.

The NVC39 is designed for larger spaces, boasting a heating capacity that can warm up to 2,000 square feet, making it suitable for open-concept living areas or larger rooms. It features a generous viewing area, allowing residents to enjoy the mesmerizing flames while creating an inviting atmosphere. With an impressive efficiency rating, the NVC39 ensures that fuel consumption is minimized, resulting in lower heating costs.

Moving to the NVC36, this model offers a slightly more compact design without compromising on power. It is an ideal choice for medium-sized rooms and comes equipped with the same high-efficiency rating as the NVC39. This model is particularly favored for its easy-to-use controls, allowing users to adjust the flame and heat output effortlessly. Its stunning cast iron construction not only provides durability but also enhances the classic aesthetic Vermont Castings is renowned for.

The NVC43 is the largest of the trio, making it perfect for those looking for a powerful heating solution for extensive spaces. With its capable output, it can effectively heat areas over 2,500 square feet. Like its counterparts, the NVC43 integrates modern technology with traditional design. It features an advanced ignition system that ensures reliable starting every time. Furthermore, it is designed with an oxygen depletion sensor, prioritizing safety by automatically turning off the unit if oxygen levels drop to unsafe levels.

All three models come with customizable options, allowing the user to personalize their stove with various finishes and styles. Add-on features like ceramic glass doors and optional blowers enhance their functionality and aesthetics. In addition, they incorporate a burn system that maximizes heat output while minimizing emissions, aligning with Vermont Castings' commitment to environmental stewardship.

Overall, the Vermont Castings NVC series combines advanced technology, character, and efficiency, providing homeowners with versatile options that meet both heating needs and design preferences. They are ideal for anyone seeking the practicality of modern heating with the beauty of classic craftsmanship.