Lochinvar Power-Fin Designer's Manual page 12

Designer's Guide / Power-fin Water Heater
CATEGORY IV VENTING – "M9" FIRING CODE
VERTICAL VENT WITH COMBUSTION AIR FROM THE ROOFTOP.
The flue outlet terminates on the rooftop. The combustion air is ducted to
the appliance from outdoors through the rooftop. This is true Direct Vent
with the flue termination and the air inlet port in the same pressure zone.
The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing
Code will be factory trimmed for Category IV vent and air inlet connections in the following
dimensions.
MODEL
PFN0502PM-M9
PFN0752PM-M9
PFN1002PM-M9
PFN1302PM-M9
PFN1501PM-M9
PFN1701PM-M9
PFN2001PM-M9
THIS CONFIGURATION MAY BE INSTALLED AS CATEGORY II. SEE PAGE 17 FOR DETAILS.
CAT IV VENT CONNECTION
4"
5"
6"
8"
6"
7"
8"
Tip
BULLET POINTS
Category IV vent material is required, such as
AL29-4C.
All vent joints and seams must be sealed gastight
and may not be common vented.
The vent must have a condensate drain with
provisions to properly collect and dispose of any
condensate that may occur in the vent pipe.
All other vent material for this configuration
Including vent termination will be obtained locally.
The air is delivered to the appliance via a separate
duct. The air intake material can be galvanized
pipe, PVC, CPVC or ABS and must be sealed
airtight.
Maximum distance – 50 equivalent feet of vent.
Maximum distance – 50 equivalent feet of air intake.
AIR INLET CONNECTION
12
LOCHINVAR CORPORATION
300 MADDOX SIMPSON PKWY
LEBANON, TN 37090
www.lochinvar.com
5"
5"
6"
6"
6"
7"
8"