GSW 5065 manual Water Supply, Piping Installation

4.Tighten the upper gear clamp to ensure the vent pipe is firmly secured and gas tight.

5.Check that the lower gear clamp is firmly seated, secured and gas tight.

6.As a final check, the vent pipe should be gently moved side to side and vertically. There should be no slippage or movement of the vent pipe within the coupling.

7.Seal around the termination assembly where it passes through the wall, inside and out, with silicone sealant.

WATER	SUFFIX	VENT PIPE	PRESSURE	* VENT	MAXIMUM EQUIVALENT	MINIMUM EQUIVALENT
HEATER			SWITCH	MATERIAL
MODEL		SIZE	SETTING	(SCHEDULE 40)	VENT LENGTH	VENT LENGTH
G/JW40,	NVH,	50mm (2 in.)	- 0.15 in. w.c.	ABS, PVC**,	15.2m (50 ft.) +	0.76m (2.5 ft.) + one 90°
	PVH		(-0.037 kPa)	CPVC	termination elbow	elbow + termination elbow
50	NVH,	76mm (3 in.)	- 0.15 in. w.c.	ABS, PVC**,	24.4m (80 ft.) +	15.2m (50 ft.) +
	PVH		(-0.037 kPa)	CPVC	termination elbow	termination elbow
G/JW5065	SNV,	76mm (3 in.)	- 0.55 in. w.c.	ABS, PVC,	15.2m (50 ft.) +	0.91m (3 ft.) + one 90°
	SPV		(-.137 kPa)	CPVC	termination elbow	elbow + termination elbow
G/JW5065	LNV	76mm (3 in.)	- 0.50 in. w.c.	ABS, PVC,	19.8m (65 ft.) +	6.9m (20 ft.) + termination
			(-.124 kPa)	CPVC	termination elbow	elbow

Notes:

1. Each 50mm (2 in.), 90° long radius elbow is equivalent to 1.5m (5 ft.) of vent length.

2. Each 76mm (3 in.), 90° long radius elbow is equivalent to 2.1m (7 ft.) of vent length.

3. Each 50mm (2 in.), 45° long-radius elbow is equivalent to 0.9m (3 ft.) of vent length.

4. Each 76mm (3 in.), 45° long radius elbow is equivalent to 1.2m (4 ft.) of vent length.

5. Minimum distance between elbows is 150mm (6 in.).

6. Do not mismatch venting materials. *Check local codes to determine which materials are allowed in your area.

7. **Pipe assembly adaptor must be used with PVC venting material (see Figure 14). Table 2 Allowable Vent Lengths and Materials (Vert. and Horiz.).

Water Supply

lations where the water pressure is high. The pressure-

Piping Installation

reducing valve should be located on the supply to the entire

Piping, fittings, and valves should be installed according to

house in order to maintain equal hot and cold water pres-

the installation drawing (Figure 17). A pressure-reducing

sure.

valve and/or an expansion tank may be required for instal-

Important:

• Do not apply heat to the water fittings on the heater as

IN A CLOSED SYSTEM USE EITHER: 1.THERMAL EXPANSION TANK

OR

they may contain nonmetallic parts. If solder connections

2.PRESSURE RELIEF VALVE.

are used, solder the pipe to an adaptor before attaching

HOT

the adaptor to the hot and cold water fittings.

• Some models may contain energy saving heat traps to

WATER

OUTLET

NOTE: BLOWER

prevent the circulation of hot water within the pipes. Do

ASSEMBLY NOT

SHOWN FOR

not remove the inserts within the heat traps.

PRESSURE

UNION

CLARITY.

REDUCING

• Always use a proper grade of joint compound and be

VALVE

WITH

certain that all fittings are drawn up tight.

BYPASS

1.

Install the water piping and fittings as shown in Figure

COLD WATER

COLD WATER

17. Connect the cold water supply to the fitting (3/4”

INLET VALVE

INLET

NPT) marked “COLD” (or “C”). Connect the hot water

supply to the fitting (3/4” NPT) marked “HOT” (or “H”).

TEMPERATURE AND

PRESSURE RELIEF VALVE

2.

The installation of unions in both the hot and cold water

supply lines is recommended.

DISCHARGE LINE 300mm

3.

(12 in.) max (CANADA) OR

The manufacturer of this water heater recommends

150mm (6 in.) max (U.S.)

installing a tempering valve in the domestic hot water

ABOVE DRAIN

line as shown in Figure 18. These valves reduce the

MASSACHUSETTS: INSTALL A

point-of-use water temperature by mixing cold and hot

VACUUM RELIEF IN COLD WATER

water. Contact a licensed plumber or the local plumbing

LINE PER SECTION 19MGL 142

authority.

4.

If installing the water heater in a closed water system,

DRAIN PAN CONNECT TO

PROPERLY OPERATING

install an expansion tank in the cold water line as spec-

FLOOR DRAIN.

ified under “Closed System/Thermal Expansion”.

Figure 17 Water Piping Installation

–

15 –