Desa VTD-24N-BTB, VTD-18P-PDG Checking GAS Connections, Pressure Testing gas Supply Piping system

Page 9

INSTALLATION Connnecting to Gas Supply (cont.)

Checking Gas Connections Pressure Testing Gas Supply Piping System

9

INSTALLATION

Continued

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 appliance (see Figure 9).

IMPORTANT: Install 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 appliance valves.

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

We recommend that you install a sediment trap in supply line as shown in Figure 9, depending on your model. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and appliance. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps mois- ture and contaminants. This keeps them from going into appliance controls. If sediment trap is not installed or is installed wrong, ap- pliance may not run properly.

CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings.

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 appliance (see Figure 9).

IMPORTANT: Install 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 appliance valves.

CSA Design-Certified Equipment

PROPANE/LP

Shutoff Valve With 1/8" NPT Tap*

- From External

 

Approved Flexible

Regulator

Gas Hose (if allowed

(11" W.C.**

by local codes)

to 14" W.C.

 

Pressure)

3" Minimum

NATURAL

 

- From Gas

 

Meter

 

(5" W.C.**

 

to 10.5" W.C.

Gas Control

Pressure)

 

Pipe Cap

Tee

Nipple

Joint

Sediment Trap

Figure 9 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 22.

**Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections 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 detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure external regulator has been installed between propane/LP supply and appliance. See guidelines under Connecting to Gas Supply, page 8.

External Regulator

Propane/LP

Supply Tank

Vent Pointing Down

Figure 8 - External Regulator With Vent Pointing Down

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 appliance 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.

For more information, visit www.desatech.com

111826-02C

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Contents GAS LOG Vented Decorative Appliance What to do if YOU Smell GASAnsi Z21.60a-2000 CSA 2.26a-2000 Safety Information Table of ContentsProduct Identification Local CodesProduct Features Optional Remote Control AccessoriesUnpacking AIR for Combustion and VentilationVentilation AIR Determining FRESH-AIR Flow for Appliance LocationVentilation Air from Outdoors Installation Installing Appliance Assembly Connecting to GAS SupplyInstallation Items Needed Checking GAS Connections Pressure Testing gas Supply Piping systemValve Pressure Testing Appliance Gas ConnectionsFor Your Safety Read Before Lighting Operating ApplianceLighting Instructions Manual Lighting Procedure Remote Control OperationTo Turn OFF GAS to Appliance Operating Appliance Inspecting Burner Cleaning and MaintenancePilot Flame Pattern Burner Flame PatternObserved Problem Possible Cause Remedy TroubleshootingRefer to Air for Combustion and Venti Observed Problem Possible Cause VTD-18N-PDG/VTD-18N-BTB SpecificationsReplacement Parts Wiring DiagramService Hints Technical ServiceThis page Intentionally Left Blank Illustrated Parts Breakdown Illustrated Parts BreakdownParts List Accessories Owners Registration Form Postage Required 111826-02C Warranty Information

VTD-18P-PDG, VTD-24N-PDG, VTD-24N-BTB specifications

The Desa VTD-24N-BTB, VTD-24N-PDG, and VTD-18P-PDG are advanced heating solutions that reflect the latest innovations in consumer comfort technology. Designed for residential and commercial applications, these units are recognized for their efficiency, performance, and user-friendly features.

The Desa VTD-24N-BTB model is a powerful heater that operates on a 24,000 BTU output. It features a sleek, modern design that allows it to integrate seamlessly into various room aesthetics. One of its standout characteristics is its variable flame height control, enabling users to adjust the heat output according to their needs. This function contributes not only to comfort but also to energy efficiency, reducing unnecessary fuel consumption. Built with high-quality materials, the VTD-24N-BTB is designed for durability and longevity, making it a reliable heating choice for years to come.

Similarly, the VTD-24N-PDG model shares several common features with the BTB version but focuses on a different aesthetic and design philosophy. It is equipped with a programmable thermostat that enhances user convenience, allowing homeowners to set schedules according to their lifestyle. This model also includes a high-efficiency fan system that circulates warm air more effectively throughout the space, ensuring even temperature distribution. The VTD-24N-PDG is an excellent choice for consumers looking for a balance between modern styling and advanced heating technology.

The VTD-18P-PDG model, while slightly smaller with an 18,000 BTU output, does not compromise on performance. It remains equipped with a plethora of features, including an easy-to-read LCD display that provides real-time information about temperature settings and system performance. This model is particularly appealing to those with limited space, offering a compact design without sacrificing heating capacity. The VTD-18P-PDG also includes safety features such as an automatic shut-off system, ensuring peace of mind for users.

All three models leverage advanced heating technologies, such as electronic ignition systems and adjustable flame technology, to maximize efficiency and comfort. With a commitment to environmentally-friendly solutions, these units utilize a low-emission combustion system, contributing to a reduced carbon footprint.

In summary, the Desa VTD-24N-BTB, VTD-24N-PDG, and VTD-18P-PDG heaters represent a blend of functionality, safety, and style. With their innovative features and efficiency-driven designs, they cater to diverse heating needs, making them an ideal investment for any modern living or working space.
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