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PV500-44U 06/12
Vertical Remote Air Horizontal Remote Air
8.5 Remote Air Consideration for Combined Remote Air Ducting
Each water heater MUST have separate intake piping. Consult factory for common air intake pipe sizing.
9 VENTING
9.1 Venting the Power VT Plus “SANI” models:
Power VT Plus models with “SANI” in the model number are designed for operation only with stainless steel venting
listed by UL, ULC, ETL or CSA for Category IV, positive pressure, gas appliance venting. Installation requires a field
supplied stainless steel adapter from the 6-5/8 female economizer outlet to the specific size (six inch minimum) and
model vent used. Follow the vent manufacturer’s instructions for installation, sealing, supporting and terminating their
vent system. Do not use plastic venting of any type on models with SANI in the model number. Do not use a
barometric damper with the Power VT Plus positive pressure vent.
WARNING: On Power VT Plus models with “SANI” in the model number, use only stainless steel venting
listed by a nationally recognized testing laboratory for Category IV, positive pressure, gas appliance venting.
Use of plastic pipe of any type or use of venting materials other than specified in these instructions can
result in failure of the venting system and/or exposure to carbon monoxide which can result in property
damage, personal injury or death.
9.2 Venting the Power VT Plus:
The Power VT Plus (except models with “SANI” in the model number, see above) is designed for operation with a
"positive pressure vent system" constructed of locally obtained 6" or larger schedule 40 or 80 solid CPVC pipe. Do
not use CPVC pipe with cell/foam type construction (such as “CellCore”) or other non-solid CPVC plastic pipe. Larger
solid CPVC pipe may be substituted, however a solid CPVC increaser from 6” to the larger size must be used for
connection to the stainless steel 6-5/8” female flue outlet from the water heater economizer. Do not insulate the
plastic vent pipe. Stainless steel venting listed by UL, ULC, ETL or CSA for Category IV positive pressure gas
appliance venting may be used instead of CPVC plastic pipe venting. If such stainless steel venting is used, follow
the vent manufacturer’s instructions for installation, sealing, supporting and terminating their vent system. Do not use
a barometric damper with the Power VT Plus positive pressure vent.
WARNING: On Power VT Plus, (except models with “SANI” in the model number, see above) use only solid
CPVC pipe or stainless steel venting listed by a nationally recognized testing laboratory for Category IV
positive pressure gas appliance venting. Use of ABS pipe, CPVC pipe, pipe with cell/foam type construction,
plastic vent pipe other than solid CPVC or use of venting materials other than specified in these instructions
can result in failure of the venting system and/or exposure to carbon monoxide which can result in property
damage, personal injury or death.