Desa GVC50NA, GVC35NA Determining FRESH-AIR Flow for Heater Location, Draft Hood Spillage Test

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FRESH AIR FOR COMBUSTION AND VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Example 1: Locating Heater in Unconfined (Open) Area

NOTICE

An unconfined area has a minimum air volume of 50 cubic feet for each 1000 BTU/Hr input rating of all appliances in the area (cubic feet equals length x width x height of area). Include adjoining rooms only if there are no doors between the rooms or if you add ventila- tion grills between the rooms (see Ventilating Confined Area, page 17).

In an open area, the air that leaks around doors and windows may provide enough fresh air for combustion and ventilation.

Draft Hood Spillage Test

Follow the steps below to see if enough fresh air is available.

1.Close all windows and doors.

2.If you have a fireplace, start a fire. Build fire until flames are burning strongly.

3.Turn on all exhaust fans. These include exhaust fans for kitchen, bathroom, water heaters (gas or electric), etc.

4.Turn on all vented gas appliances. These include any room heaters, water heaters, clothes dryer, etc.

5.Wait ten minutes for drafts to regulate.

6.Check for draft-hood spillage at each vented gas appliance. Do this by holding a lit match two inches from the draft opening (see Figure 9). If match flame pulls toward the draft hood, there is no spillage. If match flame blows away from the draft hood, there is spillage. This is a hazardous condition. See Draft Hood Spillage, page 16.

Vent Pipe

Draft Hood

Match

Typical

Water

Heater

Vent Pipe

Heater

Match

Draft Hood

Opening

Figure 9 - Checking for Draft Spillage

No Draft Hood Spillage: This shows there is enough fresh air in area for appliances. Turn off all exhaust fans and appliances if desired.

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Contents OWNER’S Operation and Installation Manual For Your SafetyWhat to do if YOU Smell GAS Contents Carbon monoxide poisoning may lead to death Safety InformationSafety Information Product Identification Local Codes Unpacking Product Features Installation ItemsCheck GAS Type Heater Clearances Locating HeaterVenting Heater Do not vent heater in any of the following ways see Figure Venting HeaterVenting Heater Proper Size Vent Connecting Heater to Utility Gas Line Connecting to GAS SupplyGas Connection Checking GAS Connections Pressure Testing Gas Supply Piping SystemFresh AIR for Combustion and Ventilation Draft Hood Spillage Test Determining FRESH-AIR Flow for Heater LocationVentilation Air from Outdoors Example 2 Locating Heater in Confined Closed Area For Your Safety Read Before Lighting Operating HeaterLighting Instructions Viewing Pilot Shutting Off Heater Manual Lighting ProcedureBlower Operation To Turn OFF GAS to ApplianceInspecting Pilot and Burner Flame Pilot Flame PatternBurner Flame Pattern Correct Burner Flame Pattern Cleaning and Maintenance Observed Possible Problem Cause Remedy Trouble ShootingTROUBLE- Shooting Cleaning and MainteLighting Instructions Top Ing statement atRemoving Control Valve and Burner Tube Service ProceduresRemoving Burner Blower Wiring DiagramChanging Burner Orifice Model Technical ServiceService Hints Accessories 35,000 BTU/Hr 50,000 BTU/HrOrdering Replacement Parts Centrals Parts Under WarrantyParts Not Under Warranty Cabinet Assembly Illustrated Parts ListBurner Assembly Parts List Limited Warranty Vanguard Vented Natural GAS Heaters Warranty Information

GVC35NA, GVC50NA, GVC65NA specifications

Desa GVC series heaters, including models GVC35NA, GVC65NA, and GVC50NA, are prominent products in the realm of gas-fired heating solutions. These heaters are designed for residential and light commercial applications, providing a reliable heat source with high efficiency.

The GVC35NA has a heating capacity of 35,000 BTU, making it an excellent choice for smaller spaces. It features a compact design, allowing for easy installation in various settings. The advanced vent-free technology incorporated into the GVC35NA enables it to operate without the need for external venting, maximizing efficiency and eliminating heat loss. Additionally, this model includes an oxygen depletion sensor (ODS), which ensures safety by shutting off the unit if oxygen levels drop below a certain threshold.

Moving on to the GVC50NA, this model provides a mid-range heating capacity of 50,000 BTU. This unit is ideal for medium-sized rooms and offers the same vent-free technology as the GVC35NA. The GVC50NA's unique design also enhances airflow, ensuring a consistent and comfortable temperature throughout the space. Like its counterpart, it is equipped with the ODS for added safety, making it suitable for use in bedrooms and other enclosed areas.

The GVC65NA represents the upper end of the GVC series, boasting a robust heating capacity of 65,000 BTU. Designed for larger spaces, it features multiple heat settings, allowing users to customize their heating experience based on specific needs. The unit’s sleek design not only provides aesthetic value but also incorporates a built-in blower option, enhancing air circulation and ensuring even heat distribution. Safety remains a priority with the GVC65NA, which includes an ODS as well as a built-in thermostat for precise temperature control.

All models in the GVC series come equipped with simple control mechanisms, ensuring ease of use. They also utilize glowing ceramic elements for efficient and effective heating. Furthermore, the stylish exterior and compact design of these heaters make them an attractive addition to any room.

In summary, the Desa GVC35NA, GVC65NA, and GVC50NA heaters provide a comprehensive range of heating solutions, combining efficiency, safety, and ease of use. Their vent-free operation, built-in safety features, and aesthetic designs make them ideal choices for a variety of heating needs. Whether for small, medium, or large spaces, there is a GVC model to meet specific requirements, ensuring comfort and warmth for users.
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