PVI Industries PV500-12 manual Venting Products of Combustion

TURBOPOWER 99 WATER HEATER

8VENTING PRODUCTS OF COMBUSTION

The TURBOPOWER® 99 is designed for operation with a "positive pressure vent system" constructed of locally obtained 4” or 5" (or larger) schedule 40 or 80 solid PVC or CPVC pipe. Do not use PVC or CPVC pipe with cell/foam type construction (such as “CellCore”) or other non-solid PVC plastic pipe. Larger solid PVC pipe may be substituted; however, a PVC increaser to the larger size must be used. Do not insulate the plastic vent pipe. Stainless steel venting listed by a nationally recognized testing laboratory for category IV positive pressure gas appliance venting may be used instead of plastic pipe venting.

WARNING: Do not vent this water heater into an existing or traditional gas vent or chimney or combine the vent with any other appliance. Such venting could result in failure of the venting system and/or exposure to carbon monoxide which can result in property damage, personal injury or death.

CAUTION: DO NOT use ABS pipe in the venting system. ABS can emit toxic fumes in the event of a building fire.

8.1Vent System Design

These water heater can be vented either vertically, through a ceiling or roof, or horizontally through a wall in any direction except down. The vent must be installed and supported to slope downward toward the water heater vent connection with at least ¼ inch drop per linear foot of horizontal vent run, to allow proper drainage of condensation.

8.2Venting of Multiple Units

Multiple heaters must not be vented into a common duct or breeching. Each unit must be independently vented in accordance with the instructions for either horizontal or vertical venting included above.

8.3Maximum Allowed Vent Length (Equivalent Length)

Maximum equivalent length of vent must not exceed the length identified in the table below (consult factory for longer equivalent lengths):

Water Heater		W/Remote Air	100 equivalent feet,	225 equivalent feet,
Prefix	Input, Btu/h	Input, Btu/h	vent diameter:	vent diameter:
742	500,000	500,000	4”	6”
1485	999,000	950,000	4”	6”
2228	1,500,000	1,500,000	5”	8”
2971	1,950,000	1,850,000	5”	8”

VENT PIPE FITTINGS EQUIVALENT (in feet)

90º Elbow	14 feet
90º Long Radius Elbow	12 feet
45º Elbow	6 feet

8.4Vent Construction and Assembly

1.Clean and deburr all solid PVC, or solid CPVC pipe ends and the joint area and trial assemble (dry-fit) the vent before joining with PVC cement following the cement manufacturer’s instructions for making sound air and water tight joints.

2.If category IV stainless steel venting listed by a nationally recognized testing laboratory is used, follow the manufacturer’s instructions and assure all joints provide a water and gas tight assembly.

3.Vent support – The vent system should be supported at intervals no greater than four feet, to prevent sagging and distortion.

4.Testing for leaks. After the vent is assembled, close the end of the vent. With the gas supply turned off, energize the combustion blower to apply air pressure to the vent system. Spray each joint and vent connection with commercially available leak detection liquid to confirm no air is escaping from any point. Repair any leaks and retest. After testing is complete, REMOVE the temporary vent closure.

5.Attach the PVI vent termination cap supplied with the appliance. This termination is required for proper operation and no substitution is allowed.

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