Vanguard Managed Solutions VYS30PWA, VYS24PWA Checking Gas Connections, Installation, Continued

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.

12 105190