Desa VMH3000TNA Mounting Heater to Optional Mantel, Connecting to GAS Supply, Assembling Mantel

Page 12

®

NATURAL GAS RESIDENTIAL HEATERS

INSTALLATION

Continued

C. MOUNTING HEATER TO

OPTIONAL MANTEL

See Instructions Included

With Mantel Kit.

Assembling Mantel

IMPORTANT: Only use the optional man- tels specified in this manual. See Accesso- ries, page 23 for proper mantel kits. This heater is only approved for use with models GMF800/GMU801 series, GM900F/ GM901U series, GM902F/GM903U series, GM700F/GM701U series, and GM702F/ GM703U series mantel kits. Using any other mantel will void the CSA approval for this heater. Only use models GMF800/GMU801 series, GM900F/GM901U series, GM902F/ GM903U series, GM700F/GM701U series, and GM702F/GM703U series mantels with this heater. Do not use these mantels with any other product.

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 1/2" or greater diameter to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

Installation must include an 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 18).

IMPORTANT: Install an equipment shutoff valve in an accessible location. The equip- ment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

CAUTION: Use pipe joint seal- ant that is resistant to liquid pe- troleum (LP) gas.

We recommend that you install a sediment trap in supply line as shown in Figure 18. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sedi- ment 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 pressure regulator with wrench when connecting it to gas piping and/or fittings.

CONNECTING TO GAS SUPPLY

WARNING: This appliance re- quires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.

WARNING: A qualified service person must connect heater to gas supply. Follow all local codes.

WARNING: Never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

IMPORTANT: Check gas line pressure be- fore connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher,

Pressure

Regulator

3/8" NPT Pipe Nipple

 

 

 

 

 

 

 

 

 

Tee Joint

 

 

 

 

Reducer

Test Gauge

 

 

 

Bushing to

 

 

 

1/8" NPT

Connection *

 

 

 

 

 

1/8" NPT

 

 

 

 

Plug Tap

 

 

 

 

Tee Joint

 

 

 

 

Sediment

 

 

Pipe

 

Trap

Nipple

 

 

 

 

Cap

Note: Burner bracket not shown for clarity

Ground

UnionHeater Cabinet

Joint

Equipment Shutoff

Valve *

From Gas Meter (5" W.C. to 10.5" W.C. Pressure)

3" Minimum

heater regulator damage could occur.

Figure 18 - 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 23.

For more information, visit www.desatech.com

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASSafety Information Local CodesAssembly Product FeaturesProduct Identification UnpackingAttaching Brass Front Trim to Front Panel Assembling and Attaching Brass TrimAIR 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 Inside BuildingVentilation Air From Outdoors Installation Installation ItemsCheck GAS Type Locating HeaterInstallation Options Thermostat Sensing BulbMounting Heater to Wall Installing Bottom Mounting Screws Placing Heater On Mounting BracketMounting Heater on Optional Hearth Base Mounting Heater to Optional Hearth BaseSecuring Hearth Base to Floor Connecting to GAS Supply Mounting Heater to Optional MantelAssembling Mantel Pressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections For Your Safety Read Before Lighting Operating HeaterLighting Instructions To Turn OFF GAS To ApplianceInspecting Burner Pilot Flame PatternBurner Flame Pattern Troubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement at Cleaning and Maintenance Replacement PartsService Hints Illustrated Parts Breakdown VMH3000TNAParts List KEY VMH3000TNA Description QTYSpecifications Technical ServiceAccessories Warranty Information International

VMH3000TNA specifications

The Desa VMH3000TNA is an advanced heating unit designed for residential and commercial use, providing a reliable source of warmth during colder months. This versatile heater offers a blend of efficiency, modern technology, and user-friendly features, making it a popular choice for consumers seeking comfort and practicality.

One of the standout features of the VMH3000TNA is its high heat output capability. With an impressive heating output of up to 30,000 BTUs, this heater can efficiently warm large spaces, ensuring that any room or area is kept at a comfortable temperature. This makes it an ideal choice for homes, workshops, and even smaller commercial settings.

In terms of technology, the Desa VMH3000TNA is equipped with a reliable electronic ignition system, which eliminates the need for manual lighting and improves overall convenience. This feature is especially beneficial during cold weather, as it ensures quick and effortless operation. Additionally, the heater includes adjustable thermostatic controls, allowing users to set their desired temperature and maintain it with precision.

The heating unit operates using either natural gas or propane, providing flexibility depending on the availability of fuel sources. This adaptability is particularly advantageous for users in remote areas where one fuel type may be more accessible than the other. Furthermore, the VMH3000TNA boasts an energy-efficient design, which helps to reduce operational costs while minimizing environmental impact.

Safety is a critical aspect of the Desa VMH3000TNA's design. It incorporates an automatic shut-off feature, which activates in the event of a malfunction or airflow blockage. This ensures user safety and peace of mind, making it suitable for use in various settings, from homes to commercial spaces. Moreover, the heater is equipped with a durable casing and high-quality components, ensuring longevity and reliability.

Another notable characteristic of this unit is its sleek and contemporary design. The VMH3000TNA features a stylish appearance that can seamlessly fit into a range of interior decors, making it not just a functional appliance but also an aesthetic addition to any room.

In summary, the Desa VMH3000TNA stands out as a powerful, efficient, and user-friendly heating solution. With its high output, modern technologies, versatile fuel options, and safety features, it provides an excellent choice for those seeking dependable heating for their spaces. Whether for a home or a commercial setting, this heater promises to deliver warmth and comfort throughout the cold seasons.
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