Desa VN20BTA, VP30BTA, VN30BTA, VP20BTA installation manual Operating Heater, Inspecting Heater

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OPERATING HEATER

Continued

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise to the OFF position.

2. Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

Turn control knob clockwise to the PILOT position.

THERMOSTAT

CONTROL OPERATION

The thermostatic control used on these models differs from standard thermostats. Standard ther- mostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between 1 and 5. Selecting the 5 setting will cause the burner to remain fully on without modulating down in most cases.

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation location, room size, open air temperatures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1.Remove front panel (see Figure 4, page 8).

2.Follow steps 1 through 7 under Lighting Instructions, page 14.

3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.

4.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 9, under Light- ing Instructions, page 14.

5.Replace front panel.

Inspecting Heater

Check pilot flame pattern and burner flame pat- tern often.

PILOT FLAME PATTERN

Figure 21 shows a correct pilot flame pattern. Figure 22 shows an incorrect pilot flame pattern. The incor- rect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot flame pattern is incorrect, as shown in Figure 22

•turn heater off (see To Turn Off Gas to Appliance)

•see Troubleshooting, page 17

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Thermocouple

Blue Flame

Pilot Burner

Figure 21 - Correct Pilot Flame Pattern

Thermocouple

Yellow Flame

Pilot Burner

Figure 22 - Incorrect Pilot Flame Pattern

BURNER FLAME PATTERN

WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide.

NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame.

113061-01F

www.desatech.com

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Contents Models VN20BTA, VP20BTA VN30BTA and VP30BTA What to do if YOU Smell GASSafety Information Table of ContentsSafety Information Unpacking Safety InformationProduct Features Local CodesConfined and Unconfined Space Air For Combustion VentilationProviding Adequate Ventilation Unusually Tight ConstructionAIR for Combustion Ventilation Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building InstallationVentilation AIR Check GAS TypeInstallation Installation ItemsLocating Heater Thermostat Sensing Bulb Installing Heater to WallInstalling Bottom Mounting Screws Attaching To Wall Anchor MethodPlacing Heater On Mounting Bracket Mounting Base Feet to Heater Connecting to GAS SupplyMounting Base Feet to Floor Where Required by local code Mounting heater to floorPropane/LP Checking GAS ConnectionsTypical Inlet Pipe Diameters Natural GasTest Pressures Equal To or Less Than Psig 3.5 kPa Pressure Testing Heater Gas ConnectionsIgnitor Button Control Knob For Your Safety Read Before LightingOperating Heater Lighting InstructionsInspecting Heater Operating HeaterCabinet Cleaning MaintenanceODS/PILOT and Burner Burner Pilot Air InletObserved Problem Possible Cause Remedy TroubleshootingTroubleshooting Maintenance, Statement above Gas leak. See WarningService Publications Replacement Parts SpecificationsService Hints Technical ServiceIllustrated Parts Breakdown ModelsVN20BTA, VP20BTA, VN30BTA, VP30BTA NJF 8C Parts listKeep this Warranty Warranty Information

VN20BTA, VN30BTA, VP20BTA, VP30BTA specifications

Desa VN30BTA, VP20BTA, VP30BTA, and VN20BTA are four advanced models from Desa that cater to diverse heating needs, incorporating innovative technologies and features aimed at enhancing performance and user experience.

The VN30BTA is renowned for its robust output and efficient heating capabilities. It features high thermal efficiency, enabling homeowners to enjoy optimal heat without excessive energy consumption. This model is equipped with advanced safety mechanisms, including automatic shut-off systems, ensuring user safety and peace of mind. Additionally, it has a stylish design that fits well in various home aesthetics.

Moving to the VP20BTA, this model is specifically designed for versatility and is capable of heating medium to large spaces efficiently. The VP20BTA has a user-friendly control interface, allowing for easy adjustments to temperature settings. Its compact form factor makes it ideal for those who have limited space but still desire a powerful heating solution. Furthermore, it leverages smart thermostat technology to maintain consistent temperatures while optimizing energy consumption.

The VP30BTA offers the highest heating output among this line, making it suitable for larger homes and commercial applications. This model incorporates cutting-edge infrared technology, which promotes even heat distribution. It also features a durable construction that ensures longevity and stability during operation. The VP30BTA is praised for its low emissions and eco-friendly design, appealing to environmentally conscious consumers.

Lastly, the VN20BTA serves as an entry-level option that combines affordability with reliability. Despite being the most budget-friendly model, it still maintains high standards of safety and efficiency. The VN20BTA is easy to install and operate, making it an excellent choice for those new to heating solutions. Its lightweight design and portability provide flexibility in usage, allowing users to move the unit as needed.

All these models showcase Desa's commitment to innovation, safety, and efficiency, making them solid choices for any heating requirement. Their features, from advanced safety systems to eco-friendly designs, reflect a comprehensive approach to modern heating solutions that meet the demands of various consumers. Whether for residential or commercial use, Desa's VN30BTA, VP20BTA, VP30BTA, and VN20BTA models stand out as reliable and effective heating options.
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