Desa CBT30NT, CBT30PT Checking GAS Connections, Test Pressures In Excess Of 1/2 Psig 3.5 kPa

Page 13

INSTALLATION

Continued

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec- tion fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: For propane/LP gas, make sure external regula- tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 11.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.Disconnect appliance with its appliance main gas valve (control valve) and equipment 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 equipment shutoff valve was connected.

3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

4.Check all joints of gas supply piping system. Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fit-

tings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 16).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for

propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

3.Check all joints from gas meter for natural gas or propane/LP supply tank for propane/LP gas, to equipment shutoff valve (see Figure 17 or 18). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

PRESSURE TESTING HEATER GAS CONNECTIONS

1.Open equipment shutoff valve (see Figure 16).

2.For natural gas open main gas valve located on or near gas meter. For propane/LP gas open propane/LP supply tank valve.

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

4.Check all joints from equipment shutoff valve to thermostat gas valve (see Figure 17 or 18). Apply a noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

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

7.Turn off heater (see To Turn Off Gas to Appli- ance, page 15).

8.Replace front panel.

Equipment

Open

 

Shutoff Valve

 

 

Closed

Figure 16 - Equipment Shutoff Valve

 

Thermostat

Gas

Gas Valve

Meter

 

Equipment

Shutoff Valve

Figure 17 - Checking Gas Joints for Natural Gas

Propane/LP

 

Supply Tank

Thermostat

 

Gas Valve

 

Equipment

 

Shutoff Valve

Figure 18 - Checking Gas Joints for

 

Propane/LP Gas

107882-01M

www.desatech.com

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Contents What to do if YOU Smell GAS Table of Contents Safety Information Safety Device Product FeaturesLocal Codes Ignition SystemProviding Adequate Ventilation AIR for Combustion VentilationFollowing are excerpts from National Fuel Unusually Tight ConstructionVentilation AIR Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside BuildingInstallation Items AIR for Combustion Ventilation InstallationCheck GAS Type Ventilation Air From OutdoorsThermostat Sensing Bulb Locating HeaterMounting Bracket Installing Heater to WallRemoving Front Panel Of Heater Marking Screw LocationsAttaching To Wall Stud Method Installing Bottom Mounting ScrewsAttaching To Wall Anchor Method Placing Heater On Mounting BracketMounting Base Feet to Floor Where required by local code Connecting to GAS SupplyMounting Heater to Floor Optional Mounting Base Feet to HeaterBe upstream from heater see Figure Dealer. See Accessories,Appliance Apply pipe joint sealant lightly to male NPT Clogged heater valvesTest Pressures In Excess Of 1/2 Psig 3.5 kPa Checking GAS ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Operating Heater For Your Safety Read Before LightingLighting Instructions Inspecting Heater Manual Lighting ProcedureTo Turn OFF GAS To Appliance Thermostat Control OperationBurner Flame Pattern Soft bristled brush to cleanODS/PILOT and Burner Burner Pilot AIR InletService Hints Cleaning MaintenanceTechnical Service When Gas Pressure Is Too LowObserved Problem Possible Cause Remedy TroubleshootingControl knob is not in pilot position Contact local propane/LP gas companyProblem could be caused by Goes out when control knob is Control knob not pressedAssembly Delayed ignition of burners Manifold pressure is too lowWhen heated, vapors from Turn heater off when using Noise when burner is litSlight smoke or odor during Initial operation Processes Hours of operationGas leak. See Warning Specifications Service Publications Replacement PartsIllustrated Parts Breakdown 111435-01 Electronic Ignitor 097159-04 Piezo Ignitor Parts ListFront Panel 107954-01 107955-01 Equipment Shutoff Valve GA5010 AccessoriesFAN Kits GA3250T Floor Mounting KIT GA4550Parts Central Keep this Warranty Warranty Information

CBT30NT, CBT30PT specifications

The Desa CBT30NT and CBT30PT are high-performance heating solutions designed to deliver efficient warmth for both residential and commercial applications. These units are known for their reliability, innovative features, and easy integration into various spaces. They are particularly suited for those seeking effective heating options without compromising on energy efficiency.

The CBT30NT, or the natural gas version, stands out with its ability to provide consistent warmth through a direct vent system. This allows for safe operation while minimizing the impact on indoor air quality. It effectively draws combustion air from outside, which is essential for spaces with limited ventilation. The CBT30PT, on the other hand, is a propane variant, providing flexibility for users who may not have access to natural gas lines. Both models are designed with user convenience in mind, featuring a simple control system that allows for easy adjustments and temperature settings.

One of the key characteristics of these heaters is their advanced thermostat control, which enables precise temperature management. This feature ensures energy usage is optimized, preventing unnecessary heating and reducing utility costs. The compact and sleek design of the CBT30NT and CBT30PT allows them to fit seamlessly into any room without being an eyesore.

The heaters are equipped with durable materials, providing resilience against the rigors of daily use. They feature safety mechanisms, including flame failure safety devices, ensuring peace of mind for users. Furthermore, both models incorporate a forced air design, which disperses heat efficiently throughout the space, eliminating cold spots and creating a more uniform climate.

In summary, the Desa CBT30NT and CBT30PT are ideal heating solutions that combine safety, efficiency, and aesthetic appeal. Their natural gas and propane options respectively cater to a diverse range of user needs, making them versatile choices for enhanced comfort. With their advanced technology and user-friendly features, these heaters are a worthy investment for anyone in need of reliable heating solutions. Emphasizing energy efficiency and user safety, they represent the next generation of residential and commercial heating systems.
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