Direct Venting - Slant/Fin Prodigy 21 KC-50 Installation And Operating Instructions Manual

APPROVED VENTING APPLICATIONS
This Prodigy 21 boiler is approved to be vented
using Direct vent or Category IV applications.
These applications are differentiated as follows:
Direct vent — The air for combustion is piped directly
to the air intake of the boiler from outdoors. The vent
piping may be run horizontally or vertically to the out-
doors, to a common terminal with the combustion air
intake or separate from the combustion air intake
means.
Category IV— The air for combustion is taken from
the ambient air surrounding the boiler. The vent piping
may be run horizontally or vertically to the outdoors.
The vent pressure is typically positive in this
application.
The following venting installation requirements are
divided into 2 sections, each pertaining to the 2 differ-
ent applications described above. Once the appropri-
ate venting application has been selected, follow only
the requirements specified under that section for vent-
ing the boiler. These requirements must be carefully
read and followed in order to avoid any hazardous
conditions due to improper installation of the flue
gas venting system.
DIRECT VENTING REQUIREMENTS
VENT LOCATION
Vent installations shall be in accordance with Part 7,
Venting of Equipment, of the National Fuel Gas Code,
ANSI Z223.1, or CAN/CGA B149.1 - M95 or latest edi-
tion for natural gas, and CAN/CGA B149.2 - M95 or
latest edition for propane.or applicable provisions of
local building codes.
Vent termination must meet the following clearances:
Minimum of 305 mm (12") above grade and normal
snow line to vent terminal bottom; minimum of 305 mm
(12") from any building opening; minimum of 914 mm
(3 feet) above any forced air intake located within
3048 mm (10 feet); minimum of 1219 mm (4 feet) hori-
zontally from, and in no case above or below, unless
1219 mm (4-foot) horizontal distance is maintained,
from electric or gas meters, regulators and relief
equipment.
Vent termination must not be located over any public
walkway, in any confined space (i.e. window wells,
alcoves, narrow alleys) or under any overhang or deck.
Vent termination should not allow flue gas discharge
towards neighbor's windows or where personal injury
or property damage can occur.
DO NOT install the vent into a common venting system.
DO NOT install a vent damper or similar device in vent
tubing or on the boiler.
VENT MATERIAL
A. DO NOT use galvanized or plastic vent system mate-
rials. The vent system for direct vent applications must
be CUL listed 76 mm (3") diameter corrosion resistant
stainless steel. The following manufacturers' systems
are approved for use within a specified minimum and
maximum equivalent vent length for each model of
boiler. Refer to Slant/Fin Parts List.
APPROVED VENT MANUFACTURERS' SYSTEMS
76 mm (3") diameter vent system restrictions:
Manufacturer
Heat Fab Saf-T Vent
Protech Fas-N Seal
Flex-L Star 34
1. The maximum equivalent length for both models is
30.5 m (100 feet) (includes elbows).
2. The minimum quantity of venting for both models is
one elbow plus the length required to pass through
back wall to the termination.
3. Up to (5) 90° elbows may be used over the length
of the vent system, provided the proper pitch is
maintained in the vent system to prevent conden-
sate accumulation.
B. When joining the various components of the above
listed vent systems, the manufacturers' instructions
should be closely followed to insure proper sealing.
Use GE-RTV106 or Dow-Corning 732 sealant for
sealing of pipe and fittings. See Figure 4 for proper
application of vent pipe sealant.
C. All vent connections must be liquid and
pressure tight.
Figure 4. Vent sealing instructions
(Consult vent manufacturer's instructions.)
VENT SEALING INSTRUCTIONS FOR HEAT-FAB 29-4C STAIN-
LESS STEEL VENTING MATERIALS
RING
DO NOT APPLY ADHESIVE INSIDE
OF FEMALE FITTINGS IN ORDER TO PRE-
VENT BLOCKAGE OF INSIDE OF FITTINGS
AND TUBING. IF ANY ADHESIVE SHOULD
GET INSIDE, BE SURE TO WIPE IT OUT
BEFORE ASSEMBLING
Equivalent length of
each 90° elbow
914 mm (3 ft.)
1829 mm (6 ft.)
1829 mm (6 ft.)
APPLY ADHESIVE BEAD (6mm [1/4"] DIA. MINI-
MUM) AROUND OUTSIDE OF MALE END ONLY,
BETWEEN 6mm (1/4") AND 9mm (3/8") FROM THE
EDGE OF THE MALE END.
CARE MUST BE TAKEN TO ASSURE THAT ADHE-
SIVE DOES NOT BLOCK INSIDE OF PIPE
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