Vertical and Horizontal Remote AIR | PVI Industries PV500-12

TURBOPOWER 99 WATER HEATER

7VERTICAL AND HORIZONTAL REMOTE AIR

7.1 Vertical or Horizontal Remote Air Option

The vertical or horizontal remote air system requires a factory or site installed remote combustion air inlet option package. If your water heater does not include this optional equipment, contact your PVI sales representative to purchase the Remote Air Kit. The air inlet termination cap supplied with combustion air inlet option must be installed. Do not fabricate this from locally available parts as it may cause unsafe operation. Combustion air supplied from outdoors must be free of contaminants.

7.2Remote Air Piping Design

The water heater can obtain remote air either vertically, through a ceiling or roof, or horizontally through a wall. Locally obtained solid PVC pipe must be attached to the remote air inlet. Larger solid PVC pipe may be substituted; however a PVC increaser must be used.

When the remote combustion air inlet and flue gas outlet are located on the same roof top surface, the cap must terminate at least 3 feet lower than the flue gas outlet, if located within a 10 foot radius.

Locate the remote combustion air inlet and the flue gas vent outlet in a wall or roof with similar wind pressure. Install the inlet cap at least one foot above the rooftop or at least 18" above grade and at least one foot above normal snow levels.

WARNING: Locate the termination of the combustion air inlet outdoors to minimize flue gas recirculation and to minimize the opportunity for products of combustion to enter the building. Recirculation of flue gas (products of combustion drawn from the flue gas outlet into the combustion air inlet) can cause operational problems, premature unwarranted product failure or unsafe operation producing carbon monoxide. Exposure to carbon monoxide can result in property damage, personal injury or death.

7.3Maximum Allowed Combustion Air Vent Length (Equivalent Length)

Water		W/Remote	100 equivalent	225 equivalent
Heater	Input, Btu/h	Air	feet, vent	feet, vent
Prefix		Input, Btu/h	diameter:	diameter:
742	500,000	500,000	6”	10”
1485	999,000	950,000	6”	10”
2228	1,500,000	1,500,000	8”	12”
2971	1,950,000	1,850,000	8”	12”

VENT PIPE FITTINGS EQUIVALENT (in feet)

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

For maxim allowed remote air lengths (equivalent length) longer than those shown above, contact the factory.

7.4Remote Air Piping of Multiple Units

Each unit must have a dedicated remote combustion air duct. Combining multiple-unit combustion air ducts into a common duct or breeching is not allowed.

9	PV500-12 08/12

PV500-12 specifications

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