Desa CBT30NT, CBT30PT Be upstream from heater see Figure, Clogged heater valves, Min Natural Gas

Page 12

INSTALLATION

Continued

CAUTION: Use only new,

black iron or steel pipe. Inter-

nally-tinned copper tubing may

be used in certain areas. Check

your local codes. Use pipe of

large enough diameter to allow

proper gas volume to heater. If

pipe is too small, undue loss of

volume will occur.

 

Typical Inlet Pipe Diameters

20,000 Btu/Hr Models - 3/8" or greater

30,000 Btu/Hr Models - 1/2" or greater

Installation must include equipment shutoff valve,

union and plugged 1/8" NPT tap. Locate NPT tap

within reach for test gauge hook up. NPT tap must

be upstream from heater (see Figure 14).

IMPORTANT: Install an equipment shutoff valve

in an accessible location. The equipment shutoff

valve is for turning on or shutting off the gas to

the appliance.

 

Apply pipe joint sealant lightly to male NPT

threads. This will prevent excess sealant from

going into pipe. Excess sealant in pipe could result

in clogged heater valves.

 

WARNING: Use pipe joint

sealant that is resistant to liquid

petroleum (LP) gas.

 

Propane/LP

External

Supply Tank

 

Regulator

 

Vent

 

Pointing

 

Down

Figure 14 - External Regulator With Vent

Pointing Down

 

Install sediment trap in supply line as shown in Figure 15. Locate sediment trap where it is within reach for cleaning. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

IMPORTANT: Hold the pressure regulator with wrench when connecting it to gas piping and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could be damaged.

Pressure

Heater

Cabinet

Regulator

 

Connection*

3/8" NPT

 

Pipe Nipple

 

Tee Joint

 

 

 

 

Reducer

Ground Joint

 

Bushing to

Union

Gauge

1/8" NPT

Equipment

 

Valve *

 

1/8" NPT

Shutoff

 

 

Test

Plug Tap

 

 

 

Trap

Tee

3"

Joint

Sediment

Cap

Min Natural Gas

Pressure)

 

Pipe

From Gas Meter

 

Nipple

(4" W.C. to 10.5" W.C.

 

 

 

 

Propane/LP From External

 

 

Regulator (11" W.C. to 14"

 

 

W.C. Pressure)

Figure 15 - Gas Connection

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your

dealer. See Accessories, page 26.

12

www.desatech.com

107882-01M

Page 11 Page 13
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Page 11 Page 13
Contents What to do if YOU Smell GAS Table of Contents Safety Information Product Features Safety DeviceLocal Codes Ignition SystemAIR for Combustion Ventilation Providing Adequate VentilationFollowing are excerpts from National Fuel Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location Ventilation AIRDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside BuildingAIR for Combustion Ventilation Installation Installation ItemsCheck GAS Type Ventilation Air From OutdoorsLocating Heater Thermostat Sensing BulbInstalling Heater to Wall Mounting BracketRemoving Front Panel Of Heater Marking Screw LocationsInstalling Bottom Mounting Screws Attaching To Wall Stud MethodAttaching To Wall Anchor Method Placing Heater On Mounting BracketConnecting to GAS Supply Mounting Base Feet to Floor Where required by local codeMounting Heater to Floor Optional Mounting Base Feet to HeaterDealer. See Accessories, Be upstream from heater see FigureAppliance Apply pipe joint sealant lightly to male NPT Clogged heater valvesChecking GAS Connections Test Pressures In Excess Of 1/2 Psig 3.5 kPaTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa For Your Safety Read Before Lighting Operating HeaterLighting Instructions Manual Lighting Procedure Inspecting HeaterTo Turn OFF GAS To Appliance Thermostat Control OperationSoft bristled brush to clean Burner Flame PatternODS/PILOT and Burner Burner Pilot AIR InletCleaning Maintenance Service HintsTechnical Service When Gas Pressure Is Too LowTroubleshooting Observed Problem Possible Cause RemedyControl knob is not in pilot position Contact local propane/LP gas companyGoes out when control knob is Control knob not pressed Problem could be caused byAssembly Delayed ignition of burners Manifold pressure is too lowNoise when burner is lit When heated, vapors from Turn heater off when usingSlight smoke or odor during Initial operation Processes Hours of operationGas leak. See Warning Specifications Replacement Parts Service PublicationsIllustrated Parts Breakdown Parts List 111435-01 Electronic Ignitor 097159-04 Piezo IgnitorFront Panel 107954-01 107955-01 Accessories Equipment Shutoff Valve GA5010FAN Kits GA3250T Floor Mounting KIT GA4550Parts Central Warranty Information Keep this Warranty

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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