Desa HFVMR24, HFVMR18 Installing Damper Clamp, Checking GAS Connections, Connecting to GAS Supply

Page 5

OWNER’S MANUAL

INSTALLATION

Continued

INSTALLING DAMPER

CLAMP

Secure the damper stop clamp provided to the leading edge of the damper as shown in Figure 3. If for any reason this clamp doesn't work on your fireplace, another suitable clamp or permanent stop must be installed, or the damper blade must be cut or removed.

Damper Clamp

Damper Damper

Masonry Fireplace

Manufactured

 

Fireplace

Damper

Clamp

Damper

Figure 3 - Attaching Damper Clamp

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" diameter or greater to allow proper gas volume to log set. 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 log set (see Figure 4).

IMPORTANT: Install 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 a clogged burner injector.

Approved

Gas Hose

CSA Design-Certified

Equipment Shutoff

Valve With 1/8" NPT

Tap*

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 4. 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 log set controls. If sediment trap is not installed or is installed wrong, log set may not run properly.

CHECKING GAS

CONNECTIONS

WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water toalljoints.Bubblesformingshow a leak. Correct all leaks at once.

Pressure Testing Gas Supply Piping System

CONNECTING TO GAS SUPPLY

WARNING: A qualified ser- vice person must connect log set to gas supply. Follow all local codes.

3" Minimum

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

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.

Disconnect appliance with its appliance

 

main gas valve (control valve) and equip-

 

ment shutoff valve from gas supply pip-

 

ing system. Pressures in excess of 1/2 psig

 

will damage heater regulator.

2.

Cap off open end of gas pipe where

Installation Items Needed

Before installing log set, make sure you have the items listed below.

piping (check local codes)

sealant (resistant to propane/LP gas)

equipment shutoff valve

test gauge connection

adjustable (crescent) wrench or pliers

sediment trap

tee joint

pipe wrench

Cap Pipe Nipple Tee Joint

Sediment Trap

Figure 4 - Gas Connection

*Purchase the optional CSA design-certi- fied equipment shutoff valve from your dealer. See Accessories, page 13.

**Minimum inlet pressure for purpose of input adjustment.

 

equipment shutoff valve was connected.

3.

Pressurize supply piping system by either

 

using compressed air or opening main gas

 

valve located on or near gas meter.

4.

Check all joints of gas supply piping

 

system. Apply mixture of liquid soap

 

and water to gas joints. Bubbles form-

 

ing show a leak.

5.

Correct all leaks at once.

6.

Reconnect log set and equipment

 

shutoff valve to gas supply. Check re-

 

connected fittings for leaks.

Continued

901915

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualVented Natural GAS Logs Safety InformationON/OFF Safety VALVE/ Pilot KIT and PROPANE/LP Conversion Local Codes Unpacking Optional Product FeaturesRemote Control Ready Millivolt Safety VALVE/ Pilot KIT Remote Control AccessoriesFlue Opening Specifications InstallationVenting Specifications for Installation AIR for Combustion and VentilationConnecting to GAS Supply Installing Damper ClampPressure Testing Gas Supply Piping System Installation Items NeededTesting Burner for Leaks Hearth KIT Assembly and InstallationKit Assembly Installation and Gas ConnectionOperating Appliance Cleaning and MaintenanceObserved Problem Possible Cause Remedy TroubleshootingGas leak. See Warning statement at HFVMR18 HFVMR24 Illustrated Parts BreakdownKEY Part Number for HFVMR18 HFVMR24 Description QTY Parts ListKEY Part Number for Description QTY LOG SETAccessories Replacement PartsParts Dealers 901915 International Warranty Information