Napoleon Ascent BHD4PFCNA Installation And Operation Manual Download Page 11

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W415-4020 / 08.09.21

minimum venting requirements

7.2.2A

When using Wolf Steel venting components, use only approved Wolf Steel rigid / fl exible components with the following

termination kits: wall terminal kit

GD422R-2

ST58U-1

, or 1/12 to 7/12 pitch roof terminal kit

GD410

, 8/12 to 12/12 roof

terminal kit

GD411

, fl at roof terminal kit

GD412

or periscope kit

GD401

(for wall penetration below grade). With fl exible

venting, in conjunction with the various terminations, use either the 5 foot (1.5m) vent kit

GD420

or the 10 foot (3.1m) vent kit

GD430

FOR 4” / 7” VENTING (USE REDUCER KIT A4758AK TO TRANSITION FROM 5” / 8” TO 4” /7” VENTING)

When using Wolf Steel 4"/7" venting components, use only approved Wolf Steel rigid / flexible components with the following termination

kits: wall terminal kit

GD222R

, or 1/12 to 7/12 pitch roof terminal kit

GD110

, 8/12 to 12/12 roof terminal kit

GD111

, flat roof terminal kit

GD112

or periscope kit

GD201

(for wall penetration below grade). With flexible venting, in conjunction with the various terminations, use

either the 5 foot (1.5m) vent kit

GD220

or the 10 foot (3.1m) vent kit

GD330

When using Wolf Steel 5"/8" venting components, use only approved Wolf Steel rigid / flexible components with the following

termination kits: wall terminal kit

GD422-1

GD422R-1

, or 1/12 to 7/12 pitch roof terminal kit

GD410

, 8/12 to 12/12 roof terminal kit

GD411

, flat roof terminal kit

GD412

or periscope kit

GD401

(for wall penetration below grade). With flexible venting, in conjunction

with the various terminations, use either the 5 foot (1.5m) vent kit

GD420

or the 10 foot (3.1m) vent kit

GD430

WARNING

• Risk of fi re. Maintain specifi ed air space clearances to vent pipe and appliance.

• The vent system must be supported every 3’(0.9m) for both vertical and horizontal runs. Use support ring assembly

W010-0067 or equivalent non-combustible strapping to maintain the minimum clearance to combustibles for both

vertical and horizontal runs. Spacers are attached to the inner pipe at predetermined intervals to maintain an even air

gap to the outer pipe. This gap is required for safe operation. A spacer is required at the start, middle, and end of each

elbow to ensure this gap is maintained. These spaces must not be removed.

This appliance uses a 5” (127mm) exhaust / 8” (203.2mm) air intake vent pipe system. Refer to the section

applicable to your installation.

For safe and proper operation of the appliance follow the venting instructions exactly. Deviation from the minimum vertical

vent length can create diffi culty in burner start-up and/or carboning. Under extreme vent confi gurations, allow several

minutes (5-15) for the fl ame to stabilize after ignition. Although not a requirement, it is recommended for vent lengths that

pass through unheated spaces (attics, garages, crawl spaces) be insulated with the insulation wrapped in a protective sleeve

to minimize condensation. Provide a means for visually checking the vent connection to the appliance after the appliance is

installed. Use a fi restop, vent pipe shield or attic insulation shield when penetrating interior walls, fl oor or ceiling.

The vent terminal may be painted with a high temperature paint to match exterior colours. Use an outdoor paint suitable for

400°F (200°C). Application and performance of paint is the consumer’s responsibility. Spot testing is recommended.

Connections made by means of an adaptor at the appliance, as well as the connection at the vent terminal must be sealed.

RTV sealant may be used on both the inner exhaust and outer intake vent pipe joints of all other approved vent systems, ex-

cept for the exhaust vent pipe connection to the appliance fl ue collar which must be sealed using the black high temperature

sealant Mill Pac.
For all vent systems is strongly recommend for all installations but required when power venting the appliance, that the outer

air intake joints are sealed using either high temperature silicone (RTV) or a suitable aluminum tape that covers each joint in

the vent system entirely around its circumference. This will ensure the best performance in every application and avoids per-

formance or condensation concerns that may occur in “tightly” constructed homes, particularly those in cold climates.

For optimum fl ame appearance and appliance performance, keep the vent length and number of elbows to a minimum.
The air terminal must remain unobstructed at all times. Examine the air terminal at least once a year to verify that

it is unobstructed and undamaged.
Rigid and fl exible venting systems must not be combined. Different venting manufacturer components must not

be combined.

These vent kits allow for either horizontal or vertical venting of the appliance. The maximum allowable horizontal run is 20

feet (6.1m). The maximum allowable vertical vent length is 40 feet (12.2m). The maximum number of vent connections is two

horizontally or three vertically (excluding the appliance and the air terminal connections) when using fl exible venting.
Horizontal runs may have a 0” (0mm) rise per foot/meter however for optimum performance it is recommended that all

horizontal runs have a minimum 1/4” (21mm) rise per foot/meter using fl exible venting. For safe and proper operation of the

appliance, follow the venting instructions exactly.
A terminal shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwell-

ings and serves both dwellings. Local codes or regulations may require different clearances.
Do not allow the inside liner to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight. A 1¼” (31.8mm) air

gap all around between the inner liner and outer liner is required for safe operation.

Use only Wolf Steel, Metal-Fab, BDM, Simpson Dura-Vent, or Selkirk Direct Temp venting components. Minimum and

maximum vent lengths, for both horizontal and vertical installations, clearances from vent pipes to combustibles and air

terminal locations as set out in this manual apply to all vent systems and must be adhered to. For Metal-Fab, BDM, Simpson

Dura-Vent, or Selkirk Direct Temp, follow the installation procedure provided with the venting components or on the website

for your venting supplier.

A starter adaptor must be used with the following vent systems and may be purchased through Wolf Steel or from the

corresponding supplier listed below:

If for any reason the vent air intake system is disassembled; reinstall per the instructions provided for the initial

installation.

This appliance must be installed with a continuous connection of exhaust and air intake vent pipes. Utilizing alternate

constructions, such as a chimney as part of the vent system, is not permitted.