Williams 2903511, 2903512 installation instructions Some Points to Remember, Technical Data

Some Points to Remember

•Learn to recognize the odor of LP Gas. Your local LP Gas Dealer can give you a ”Scratch and Sniff” pamphlet. Use it to find out what the propane odor smells like. If you suspect that your LP Gas has a weak or abnormal odor, call your LP Gas Dealer.

•If you are not qualified, do not light pilot lights, perform service, or make adjustments to furnaces on the LP Gas system. If you are qualified, consciously think about the odor of LP Gas prior to and while lighting pilot lights or performing service or making adjustments.

•Sometimes a basement or a closed–up house has a musty smell that can cover up the LP Gas odor. Do not try to

light pilot lights, perform service or make adjustments in an area where the conditions are such that you may not detect the odor if there has been a leak of LP Gas.

•Odor fade, due to oxidation by rust or absorption on walls of new cylinders and tanks, is possible. Therefore, people should be particularly alert and careful when new tanks or cylinders are placed in service. Odor fade can occur in new tanks or reinstalled old tanks if they are filled and allowed to set too long before refilling. Cylinders and tanks which have been out of service for a time may develop internal rust which will cause odor fade. If such conditions are suspected to exist, a periodic sniff test of the gas is advisable. If you have any question about the gas odor, call your LP Gas dealer. A periodic sniff test of the LP Gas is a good safety measure under any condition.

•If, at any time, you do not smell the LP–Gas odorant, and you should, assume you have a leak. Then take

the same immediate action recommended above for the occasion when you do smell the odorized LP Gas.

•If you experience a complete ”gas out” (the container is under no vapor pressure), turn the tank valve off immediately. If the container valve is left on, the container may draw in some air through openings such as pilot light orifices.

If this occurs, some new internal rusting could occur. If the valve is left open, then treat the container as a new tank. Always be sure your container is under vapor pressure by turning it off at the container before it goes completely empty or having it refilled before it is completely empty.

Technical Data

OUTPUT HEATING CAPACITY	kW	6.98
	kBTU/hr	23,817
INPUT RATING (High Input)	kW	8.5
	kBTU/hr	29,000
MINIMUM INPUT RATING	kW	5.89
(Low Input)	kBTU/hr	20,100
THERMAL EFFICENCY	%	82
LENGTH	mm	1006
	in	39-5/8”
HEIGHT	mm	715
	in	28-1/8”
DEPTH	mm	208
	in	8-1/4”
WEIGHT	kg	42
	lbs.	93
GAS CONNECTION	NPT	½”
		FEMALE
WALL HOLE DIAMETER	mm	50
	in	2”
AIR INLET DIAMETER	mm	49
	in	1-7/8”
EXHAUST PIPE DIAMETER	mm	35
	in	1-3/8”
MAX WALL THICKNESS	mm	500
	in	19-5/8”
MIN WALL THICKNESS	mm	150
	in	5-7/8”

PRESSURE			NATURAL	mbar	8.0
		MAX	GAS	in W.C.	3.2
			LP	mbar	26.5
				in W.C.	10.6
MANIFOLD			NATURAL	mbar	4.6
		MIN	GAS	in W.C.	1.8
			LP	mbar	16.2
				in W.C.	6.5
			NATURAL	m3/h	.9
		MAX	GAS	ft3/h	30.1
RATE			LP	m3/h	.3
				ft3/h	11.6
			NATURAL	m3/h	.6
GAS			GAS
				ft3/h	21.3
		MIN		m3/h	.2
			LP	ft3/h	8.7
			NATURAL	mbar	17.4
MINIMUM INLET			GAS	in W.C.	7.0
	PRESSURE		LP	mbar	27.4
				in W.C.	11.0
AIR FLOW				m³/h	450
				cfm	265
MINIMUM AIR FLOW				m³/h	330
				cfm	194

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