VANGUARD

UNVENTED PROPANE/LP GAS LOG HEATER

INSTALLATION

Installation must include an equipment

 

 

Continued

 

shutoff valve, union, and plugged 1/8" NPT

 

tap. Locate NPT tap within reach for test

 

 

 

 

gauge hook up. NPT tap must be upstream

WARNING: Never connect

from heater (see Figure 15).

heater to private (non-utility) gas

IMPORTANT: Install an equipment shutoff

wells. This gas is commonly

valve in an accessible location. The equip-

known as wellhead gas.

ment shutoff valve is for turning on or

 

 

 

 

shutting off the gas to the appliance.

CAUTION: Use only new,

Apply pipe joint sealant lightly to male

black iron or steel pipe. Inter-

threads. This will prevent excess sealant

nally-tinned copper tubing may

from going into pipe. Excess sealant in pipe

be used in certain areas. Check

could result in clogged heater valves.

your local codes. Use pipe of 1/2"

 

diameter

or greater to allow

CAUTION: Use pipe joint seal-

proper gas volume to heater. If

ant that is resistant to liquid pe-

pipe is too small, undue loss of

troleum (LP) gas.

pressure will occur.

 

Propane/LP

External Regulator

We recommend that you install a sediment

trap in supply line as shown in Figure 15.

Supply

 

Locate sediment trap where it is within

Tank

 

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.

 

 

CAUTION: Avoid damage to

 

Vent Pointing Down

control. Hold fitting with wrench

 

when connecting it to gas piping

Figure 14 - External Regulator With Vent

and/or fittings.

Pointing Down

 

CSA/AGA Design-Certified Equipment

 

Shutoff Valve With 1/8" NPT Tap*

 

Approved Flexible Gas Hose

From External

(if allowed by local codes)

Regulator (11"

 

 

Gas Control

 

W.C.** to 14"

 

W.C. Pressure)

 

 

Tee Joint

 

3" Minimum

Sediment

 

Pipe Nipple Trap

 

 

 

 

Cap

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 to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure exter- nal regulator has been installed between propane/LP supply and heater. See guidelines under Con- necting to Gas Supply, pages 11 and 12.

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 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 equipment shutoff valve was con- nected.

3.Pressurize supply piping system by ei- ther using compressed air or opening propane/LP supply tank valve.

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 heater and equipment shutoff valve to gas supply. Check re- connected fittings for leaks.

Figure 15 - Gas Connection

*Purchase the optional CSA/AGA design-certified equipment shutoff valve from your dealer. See Accessories, page 24.

**Minimum inlet pressure for purpose of input adjustment.

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Vanguard Managed Solutions VYS30PWA, VYS24PWA Checking GAS Connections, Pressure Testing Gas Supply Piping System

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