Lochinvar Power-Fin PF 1500, Designer'S Manual

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8 L o c h i n v a r
D E S I G N E R
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S G U I D E P O W E R
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F I N W A T E R H E A T E R
6 1 5 - 8 8 9 - 8 9 0 0
VENTING OVERVIEW
CATEGORY I DOUBLE-WALL B-VENT
(ON/OFF - ONLY)
Conventional Vertical Negative Draft
Venting with a vertical rooftop termination
and combustion air supplied from the
equipment room.
Vertical DirectAire Venting
uses a vertical
negative draft flue with a rooftop termination
for flue products and a combustion air pipe
from the sidewall or rooftop.
CATEGORY IV VENT MATERIAL
(ALL MODELS)
Vertical Negative Draft Venting with a vertical
rooftop termination and combustion air
supplied from the equipment room. (Note:
B-Vent may be used with ON/OFF models)
Vertical Positive Pressure Venting with a
vertical rooftop termination and combustion
air supplied from the equipment room.
Sidewall Venting
uses the unit's internal fan to
exhaust the flue products out to a sidewall
vent termination with combustion air supplied
from the equipment room.
Vertical DirectAire Venting (Sidewall Inlet) with
a vertical rooftop termination for flue products
and a combustion air pipe from the sidewall.
(Note: B-Vent may be used with ON/OFF
models)
Horizontal DirectAire Venting uses the unit's
internal fan to exhaust the flue products out a
sidewall vent termination with a combustion
air pipe from the rooftop or from a sidewall
other than where the flue terminates.
Horizontal or Vertical Direct Venting
uses the
unit's internal fan to exhaust the flue products
out to a sidewall or rooftop vent termination
with a separate sealed combustion air pipe to
the outdoors. This system terminates both the
flue and combustion air inlet on the same
surface and in the same pressure zone.
Lochinvar
CAUTION!
Vent connectors
serving appliances
vented by natural
draft must not be
connected into any
portion of mechanical
draft systems
operating under a
positive pressure.
(TABLE B) POWER-FIN VENTING CONFIGURATIONS
VERTICAL VERTICAL
FIRING VERTICAL VERTICAL DirectAire DirectAire
BTU/HR CODE FIRING NEGATIVE POSITIVE w/ ROOFTOP w/ SIDEWALL HORIZONTAL VERTICAL HORIZONTAL
INPUT PREFIX CONTROLS DRAFT PRESSURE AIR INLET AIR INLET DirectAire SIDEWALL DIRECT VENT DIRECT VENT
500,000 F ON/OFF CAT. I --- CAT. I CAT. I CAT. IV CAT. IV CAT. IV CAT. IV
500,000 M MODULATING CAT. II --- --- CAT. II CAT. IV CAT. IV CAT. IV CAT. IV
750,000 F ON/OFF CAT. I --- CAT. I CAT. I CAT. IV CAT. IV CAT. IV CAT. IV
750,000 M MODULATING CAT. II --- --- CAT. II CAT. IV CAT. IV CAT. IV CAT. IV
1,000,000 F ON/OFF CAT. I --- CAT. I CAT. I CAT. IV CAT. IV CAT. IV CAT. IV
1,000,000 M MODULATING CAT. II --- --- CAT. II CAT. IV CAT. IV CAT. IV CAT. IV
1,300,000 F ON/OFF CAT. I --- CAT. I CAT. I CAT. IV CAT. IV CAT. IV CAT. IV
1,300,000 M MODULATING CAT. II --- --- CAT. II CAT. IV CAT. IV CAT. IV CAT. IV
1,500,000 M MODULATING --- CAT. IV --- CAT. IV CAT. IV CAT. IV CAT. IV CAT. IV
1,700,000 M MODULATING --- CAT. IV --- CAT. IV CAT. IV CAT. IV CAT. IV CAT. IV
2,000,000 M MODULATING --- CAT. IV --- CAT. IV CAT. IV CAT. IV CAT. IV CAT. IV
NOTE: Category II venting configurations must be installed with corrosion resistant vent material.