Desa VP26T, VN30T, VP22IT, VP16IT, VP16T, VN25IT, VN18T After ODS/pilot lights, keep control

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TROUBLESHOOTING

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame goes out when

1.

Control knob not fully pressed in

1.

Press in control knob fully

control knob is released

2.

Control knob not pressed in long enough

2.

After ODS/pilot lights, keep control

 

 

 

 

knob pressed in 30 seconds

 

3.

Equipment shutoff valve not fully open

3.

Fully open equipment shutoff valve

 

4.

Thermocouple connection loose at con-

4.

Hand tighten until snug, then tighten 1/4

 

 

trol valve

 

turn more

 

5.

Pilot flame not touching thermocouple,

5.

A) Contact local natural or propane/LP

 

 

which allows thermocouple to cool,

 

gas company

 

 

causing pilot flame to go out. This prob-

 

B) Clean ODS/pilot (see Cleaning and

 

 

lem could be caused by one or both of

 

Maintenance, page 17) or replace ODS/

 

 

the following:

 

pilot assembly

 

 

A) Low gas pressure

 

 

 

 

B) Dirty or partially clogged ODS/pilot

 

 

 

6.

Thermocouple damaged

6.

Replace pilot assembly

 

7.

Control valve damaged

7.

Replace control valve

 

8.

Safety interlock system has been trig-

8.

Wait one minute for safety interlock sys-

 

 

gered (thermostat models only)

 

tem to reset. Repeat ignition operation

 

 

 

 

 

Burner(s) does not light after ODS/pilot is lit

1.

Burner orifice(s) is clogged

1.

Clean burner orifice(s) (see Cleaning

 

 

 

 

and Maintenance, page 17) or replace

 

 

 

 

burner orifice(s)

 

2.

Inlet gas pressure is too low

2.

Contact local natural or propane/LP gas

 

 

 

 

company

 

 

 

 

 

Delayed ignition of burner(s)

1.

Manifold pressure is too low

1.

Contact local natural or propane/LP gas

 

 

 

 

company

 

2.

Burner orifice(s) is clogged

2.

Clean burner orifice(s) (see Cleaning

 

 

 

 

and Maintenance, page 17) or replace

 

 

 

 

burner orifice(s)

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice(s) is clogged or damaged

1.

Clean burner orifice(s) (see Cleaning

 

 

 

 

and Maintenance, page 17) or replace

 

 

 

 

burner orifice(s)

 

2.

Burner damaged

2.

Replace burner

 

3.

Gas regulator defective

3.

Replace gas regulator

 

 

 

 

 

Burner plaque(s) does not glow

1.

Plaque damaged

1.

Replace burner

 

2.

Inlet gas pressure is too low

2.

Contact local natural or propane/LP gas

 

 

 

 

company

 

3.

Control knob set between locked posi-

3.

Turn control knob until it locks at de-

 

 

tions

 

sired setting

 

 

 

 

 

Slight smoke or odor during initial operation

1.

Residues from manufacturing processes

1.

Problem will stop after a few hours of

 

 

 

 

operation

 

 

 

 

 

Heater produces a clicking/ticking noise just after burner is lit or shut off

1.Metal expanding while heating or con- tracting while cooling

1.This is common with most heaters. If noise is excessive, contact qualified ser- vice person

For..com

107887-01E

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Contents What to do if YOU Smell GAS Safety Information and Installation ManualVP16IT, VN18IT VP22IT, VN25IT Table of Contents Safety InformationSafety Information Product Identification Product FeaturesUnpacking Local CodesAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceVentilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Installation Installation ItemsCheck GAS Type Locating HeaterInstalling Heater to Wall Thermostat Sensing BulbAttaching Mounting Bracket To Wall Placing Heater On Mounting BracketInstalling Bottom Mounting Screws Mounting Base Feet to Floor Where required by local codeMounting Heater to Floor Mounting Base Feet to HeaterConnecting to GAS Supply Typical Inlet Pipe DiametersChecking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Lighting Instructions NON-THERMOSTAT Models For Your Safety Read Before LightingOperating Heater Manual Lighting Procedure Thermostat Models For Your Safety Read Before LightingTo Select Heating Level To Turn OFF GAS to ApplianceVP16T VP26T VN18T VN30T Thermostat Operation Burner Patterns, Models VP16IT, VN18IT, VP26IT, & VN30ITCleaning and Maintenance Inspecting HeaterSpecifications VN25ITTroubleshooting Observed Problem Possible Cause RemedyAfter ODS/pilot lights, keep control Observed Problem Possible Cause Illustrated Parts Breakdown Cabinet BodyParts List VN30T Description QTYCabinet Body VP16IT, VN18IT, VP22IT, VN25IT KEY Part Number VP16IT VN18IT VP22IT VN25IT Description QTY Burner Assembly VP16, VN18, VP16T, VN18T, VP16IT, VN18ITVP16T VN18T VP16IT VN18IT Description QTY VP26, VN30, VP26T, VN30T, VP22IT, VN25IT VP26T VN30T VP22IT VN25IT Description QTY Replacement Parts Service HintsTechnical Service Service Publications AccessoriesOwners Registration Form Postage Required 107887-01E Warranty Information

VN18, VP16, VN18T, VN25IT, VP22IT specifications

Desa VN18, VN30T, VP16, VP26T, and VP16T are a series of innovative devices tailored to meet diverse needs in various applications, ranging from industrial to consumer markets. Each model embodies distinct features, technologies, and characteristics that enhance performance and usability.

The Desa VN18 is renowned for its compact structure and lightweight design, making it ideal for small-scale applications. It integrates a sophisticated energy-efficient system that minimizes power consumption while maximizing output. This model supports various connectivity options, ensuring seamless integration with existing systems. Additionally, the VN18 is equipped with an intuitive user interface that simplifies operation, making it accessible even for those with limited technical experience.

In contrast, the VN30T offers enhanced capabilities suitable for medium to large-scale operations. This model boasts an impressive processing power, enabling it to handle more complex tasks with ease. The VN30T features advanced cooling technologies that keep the unit operating optimally, even under heavy workloads. Furthermore, its durable construction ensures longevity and reliability, making it a preferred choice for industrial environments.

The VP16, designed with versatility in mind, excels in adaptability across multiple applications. It offers interchangeable components, allowing users to customize setup based on specific needs. The technology embedded within the VP16 includes smart sensors that provide real-time feedback, helping users to monitor performance and adjust settings accordingly. This level of adaptability makes the VP16 an invaluable asset in dynamic working conditions.

Next in the lineup is the VP26T, which stands out for its robust performance under demanding conditions. With a focus on safety features, this model includes multiple fail-safes and redundancy systems that ensure consistent operation, even in emergencies. The VP26T is designed for heavy-duty applications, featuring enhanced materials that resist wear and tear, thereby prolonging its lifespan.

Finally, the VP16T combines the best aspects of its predecessors while introducing new technological advancements. It utilizes cutting-edge automation technologies that enable remote control and monitoring, enhancing user convenience. The VP16T's power management system optimizes energy use based on operational demands, contributing to both cost savings and sustainability.

Overall, Desa VN18, VN30T, VP16, VP26T, and VP16T represent a forward-thinking approach to design and functionality, addressing the evolving needs of users across various sectors. With their unique features and robust technologies, these models are set to redefine standards in their respective categories.
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