Troubleshooting guide

Power VT

Plus WATER HEATER

PV500-44 12/13

8.5 Vertical or Horizontal Vent Termination:

1. The vent terminal must have a minimum clearance of 4 feet (1.22 m) horizontally from, and in no case be

located above or below, unless a 4 foot (1.22 m) horizontal distance is maintained from electric meters, gas

meters, regulators and relief equipment.

2. The vent cap must terminate at least 3 feet (0.91 m) above any forced air inlet within 10 feet (3.05 m).

3. The vent shall terminate at least 4 feet (1.22 m) below, 4 feet (1.22 m) horizontally from or 1 foot (0.3 m) above

any door, window or building air inlet to the building.

4. The vent system shall terminate at least 1 foot (0.3 m) above grade and at least 1 foot (0.3m) above possible

snow accumulation levels and shall terminate at least 7 feet (2.13 m) above grade when located adjacent to

public walkways or gathering areas.

5. To avoid a blocked flue condition, keep the vent cap clear of snow, ice, leaves, debris, etc.

6. The vent must not exit over a public walkway, near soffit vents or crawl space vents or other areas where

condensate or vapor could create a nuisance or hazard or cause property or could be detrimental to the

operation of regulators, relief valves or other equipment.

7. A horizontal vent must extend one foot beyond the wall.

8. A horizontal vent terminal must not be installed closer than 3 feet (0.91m) from an inside corner of an L-shaped

structure.

9. A vertical vent must exhaust outside the building at least 3 feet (0.91m) above the point of the exit and at least 2

feet (0.61 m) above the highest point of the roof within a 10-foot (3.05 m) radius of the termination.

10. A vertical termination less than 10 feet (0.91 m) from a parapet wall must be a minimum of 2 feet (0.61 m)

higher than the parapet wall.

8.6 Combining Category IV Vents

Combined Power VT Plus Category IV gas vent systems must incorporate an Exhausto or Tjernlund variable speed,

modulating, mechanical draft inducer capable of maintaining the appropriate negative draft at the end of the common

flue, to assure that all water heaters in the combined vent system operate with a negative draft. Do not exceed

negative 0.25” W.C. See “Combining Vents with a Draft Inducer” illustration below.

WARNING: Do not connect multiple water heaters vents into a single unpowered or fixed speed powered

vent. This could cause unsafe operation and the potential for poisonous carbon monoxide to enter occupied

areas. Such improper installation can cause property damage, personal injury, exposure to hazardous

materials or loss of life.

Conventional Venting Through the Wall Venting Combining Vents with a Draft Inducer