Desa CFS18NRA, VS24NRA, VS18NRA Checking GAS Connections, Pressure Testing Heater Gas Connections

Page 12

DESA INTERNATIONAL

UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

CHECKING GAS

CONNECTIONS

WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 14).

2.Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

3.Check all joints from gas meter to manual shutoff valve (see Figure 15). Apply mix- ture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Open

Pressure Testing Heater Gas Connections

1.Open manual shutoff valve (see Fig- ure 14).

2.Open main gas valve located on or near gas meter.

3.Make sure control knob of heater is in the OFF position.

4.Check all joints from manual shutoff valve to gas control (see Figure 15). Apply mixture of liquid soap and wa- ter to gas joints. Bubbles forming show a leak.

mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

Pressure Testing gas Supply Piping system

Test Pressures In Excess Of 1/2 PSIG

Manual

Shutoff

Valve

Closed

Figure 14 - Manual Shutoff Valve

5.Correct all leaks at once.

6.Light heater (see Operating Heater, pages 14 through 16). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 15).

1.Disconnect heater and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.

2.Cap off open end of gas pipe where manual shutoff valve was connected.

3.Pressurize supply piping system by ei- ther using compressed air or opening main gas valve located on or near gas meter.

4.Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

6.Reconnect heater and manual shutoff valve to gas supply. Check reconnected fittings for leaks.

Manual Shutoff Valve

Gas Meter

Gas Control

Location

Figure 15 - Checking Gas Joints

12

104416

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Contents Desa International What to do if YOU Smell GASSafety Information Desa International Unvented Natural GAS LOG HeaterProduct Identification Features Optional Remote Control AccessoriesLocal Codes UnpackingAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation AIR Ventilation Air From InsideBuilding Ventilation Air From OutdoorsInstallation Installation ClearancesCheck GAS Type Vent-Free Operation OnlyIf Using Mantel Minimum Noncombustible Material ClearancesMantel Clearances Floor ClearancesInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Area of Various Standard Round FluesConnecting to GAS Supply Attaching Flexible Gas Hose to Heater Gas RegulatorPressure Testing Heater Gas Connections Pressure Testing gas Supply Piping systemChecking GAS Connections Installing Logs For Your Safety Read Before Lighting Operating HeaterLighting Instructions Manual Lighting Procedure To Turn OFF GAS To ApplianceShutting Off Heater Shutting Off Burners Only pilot stays litOptional Remote Operation Thermostat Control OperationGhrc Operation Ghrct OperationInspecting Burners Pilot Flame PatternFront Burner Flame Pattern Cleaning and Maintenance Replacement PartsTroubleshooting Observed Problem Possible Cause RemedySee Wiring Diagram, Gas leak. See Warning statement Illustrated Parts BREAKDOWN4 Variable Control CFS18NRA, VS18NRA VS24NRA, VS30NRAParts List VS24NRA VS30NRA Description QTYSpecifications Technical ServiceWiring Diagram Service HintsAccessories Warranty Information International

VS30NRA, VS18NRA, VS24NRA, CFS18NRA specifications

Desa, a well-known manufacturer in the heating and light industry, has developed several innovative products: the VS24NRA, VS30NRA, CFS18NRA, and VS18NRA. Each of these models showcases unique features, advanced technologies, and characteristics designed to cater to diverse consumer needs.

Starting with the VS24NRA, this unit is celebrated for its efficient heating capabilities. It boasts a powerful design, ideal for medium-sized spaces. Featuring an advanced combustion system, it ensures optimal fuel usage, translating to lower running costs and reduced environmental impact. The VS24NRA is equipped with an adjustable thermostat, allowing users to maintain desired temperatures easily. Its sleek and modern design allows it to fit seamlessly into various interior environments.

Next, the VS30NRA takes heating efficiency a step further. With a higher BTU output, it is suitable for larger spaces requiring more substantial heating solutions. This model incorporates cutting-edge heat distribution technology, ensuring even warmth throughout the room. Additionally, the VS30NRA is built with premium materials that enhance its durability, making it a long-term investment for homeowners. Its electronic ignition system contributes to convenience, allowing for quick and hassle-free startups.

The CFS18NRA stands out with its dual functionality by combining both heating and cooking capabilities. This model is ideal for those looking to maximize utility in smaller spaces. It features a contemporary design and compact build, making it an excellent addition to cabins, tiny homes, or other limited areas. The CFS18NRA utilizes infrared heating technology, which warms objects directly rather than relying solely on heating the air, creating a cozy atmosphere with minimal energy consumption.

Finally, the VS18NRA offers a balance between size and efficiency. It is tailored for modest environments, providing consistent warmth without overwhelming the space. The VS18NRA comes equipped with a user-friendly control panel, giving users precise control over settings. Its portability makes it a versatile choice for different rooms in a home or for outdoor gatherings.

In summary, Desa’s range, including the VS24NRA, VS30NRA, CFS18NRA, and VS18NRA, caters to a variety of heating needs. Their use of innovative technologies and emphasis on efficiency showcases Desa’s commitment to quality and customer satisfaction. Each model presents distinct features that make them suitable for a range of applications, ensuring homeowners can find the right solution for their heating needs.
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