GSW 61009 REV. C (09-03) manual Venting, A - Installation Components, Vent Location Limitations

EXPANSION

TANK

HOT WATER

OUTLET

UPPER AIR

INLET BOX

REAR AIR

TUBE

GAS SUPPLY

MANUAL

SHUT-OFF

VALVE

GROUND-JOINT

UNION

SEDIMENT		in.)
TRAP	(6
152mm

LOWER AIR

INLET BOX

Figure 2A - Installation Components.

COLD WATER

INLET

TEMPERATURE

&PRESSURE RELIEF VALVE

GAS CONTROL

DRAIN PAN

FLOOR DRAIN

Figure 2B shows the location of a pressure relief and/or expansion tank if a check valve or pressure-reducing valve is in the cold water supply to the house.

Use OPTION 1 or 2 whichever is more convenient. If pres- sure relief valve is used, select one with a setting 172 kPa (25 psi) below the T&P valve rating at tank.

Venting

Make certain to observe the vent location limitations com- plying with the "Natural Gas and Propane Installation Code" CAN/CSA-B149.1or "National Fuel Gas Code" ANSI Z223.1 (NFPA 54) and/or local codes. There is some important information shown in Figure 3.

457mmleastat	cornerbuilding					Vent Terminal must be located at
						least 305mm (12 in.) from
						Windows, Doors, or any other
						Opening through		which	flue
						gases could enter the building.
locatedbemustTerminalVent	overhanganyfromin.)(18or irregularity.otheror			above grade. Higher in			Vent terminal		must
							be located at		least
							915mm	(36	in.)
							above any Forced Air
		457mm (18 in.)					Inlet into the building
			Min.			305mm	within 3m (10		ft.) of
						(12 in.)
							the Vent Terminal
						Min.
								915mm
								(36 in.)
					Within 1.8m (6 ft.)			Min.
				305mm	(12 in.) Min.
				Areas of Heavy Snowfall
							Any Forced Air Inlet
							into the building

Figure 3 - Vent Location Limitations

For a second or more direct vent unit, the distance between vent terminals must have a minimum of 305mm (12 in.). INSPECT SHIPMENT –– There may be hidden damage caused by transit. Check to be certain all parts of the vent- ing system, as shown in Figures 3A through 3M, are pres- ent. Inspect the upper and lower air inlet boxes, rear air tube and all parts of the venting system (see Figure 2A).

CAUTION

WATER SUPPLY TO HOME

FLOOR DRAIN

OPTION 2

EXPANSION TANK

OPTION 1

P R E S S U R E

RELIEF VALVE

WATER METER

WITH BACKFLOW

PREVENTER

OVERFLOW

WATER SUPPLY

TO METER

If there are any damaged parts, DO NOT install this water heater. Report any shortage to your distributor and damage to your carrier.

Note: The four fasteners that are required to secure the vent terminal to the exterior wall are not provided. These should be screw type (not nails) chosen for the type of con- struction and obtained locally.

CAUTION

Cut edges of corrugated (flex) pipe are extremely sharp. Wear gloves when handling.

Figure 2B - Installation Options.

– 6 –