International comfort products F9MVE, Installation Instructions Manual

INSTALLATION INSTRUCTIONS

Gas Furnace: (F/G)9MVE

440 01 4400 03

39

Specifications subject to change without notice.

Locating the Vent Termination

General

NOTE

:  

Termination Requirements for the Provinces of

Alberta and Saskatchewan are located at the end of this
section.

Combustion

−

air inlet pipe (Direct Vent/2

−

Pipe system only) and

vent pipe must terminate outside structure, either through

sidewall or roof.
For vent termination clearance, references to National codes

are shown in 

Figure 59

for Direct Vent/2

−

Pipe system and

Figure 60

 for Ventilated Combustion Air/Non

−

direct

Vent/1

−

Pipe system. For exterior termination arrangements,

refer to 

Figure 59

for Direct Vent/2

−

Pipe system and 

Figure 60

for Ventilated Combustion Air/Non

−

 Direct/1

−

Pipe system.

Contact Local code authorities for other requirements to and/or

exemptions from the National codes shown in the figures.
Roof termination is often preferred since it is less susceptible to

damage or contamination, is usually located away from

adjacent structures, is less prone to icing conditions, and often

has less visible vent vapors. Sidewall terminations may require

sealing or shielding of building surfaces with a corrosive

resistance material due to the corrosive properties of

combustion products from the vent system, as well as

protection of adjacent structures.

NOTICE

RECOMMENDED SUPPORT FOR VENT

TERMINATIONS

It is recommended that side-wall vent terminations in

excess of 24 inches (0.6 M) or rooftop terminations in

excess of 36 inches (1.0 M) in vertical length be sup-

ported by EITHER the Direct Vent Termination Kit

shown in  

Table 12

 or by field-supplied brackets or

supports fastened to the structure.

When determining appropriate location for termination, consider

the following guidelines:

1. Comply with all clearance requirements stated in

Figure 59

 or 

Figure 60

 per application.

2. Termination or termination kit should be positioned where

vent vapors will not damage plants/shrubs or air

conditioning equipment.

3. Termination or termination kit should be positioned so

that it will not be affected by wind eddy, such as inside

building corners, nor by recirculation of flue gases,

airborne leaves, or light snow.

4. Termination or termination kit should be positioned where

it will not be damaged by or subjected to foreign objects

such as stones, balls, etc.

5. Termination or termination kit should be positioned where

vent vapors are not objectionable.

Direct Vent / 2

−

Pipe System

Direct vent (2

−

pipe) vent and combustion air pipes must

terminate outside the structure. See 

Figure 59

 for references to

vent clearances required by National code authorities.

Allowable vent and combustion air terminations are shown in

Figure 47

.

!

WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow the instructions outlined in Locating

the Vent Termination for each appliance being placed

into operation could result in carbon monoxide

poisoning or death.
For all venting configurations for this appliance and

other gas appliances placed into operation for the

structure, provisions for adequate combustion,

ventilation, and dilution air must be provided in

accordance with:

U.S.A. Installations:

 Section 9.3 NFPA 54/ANSI

Z223.1 1

−

2012, Air for Combustion and Ventilation and

applicable provisions of the local building codes.

Canadian Installations:

 Part 8 of

CAN/CSA

−

B149.1

−

10. Venting Systems and Air

Supply for Appliances and all authorities having

jurisdiction.

Ventilated Combustion Air

The vent pipe for a Ventilated Combustion Air System must

terminate outdoors. See 

Figure 59

 for references to vent

clearances required by National code authorities. Allowable

vent terminations are shown in 

Figure 48

. The combustion air

pipe terminates in a well

−

ventilated attic or crawl space. Follow

the clearances as shown in 

Figure 57

 and 

Figure 58

.

The combustion air pipe cannot terminate in attics or crawl

spaces that use ventilation fans designed to operate in the

heating season. If ventilation fans are present in these areas,

the combustion air pipe must terminate outdoors as a Direct

Vent System.

Non

−

Direct Vent / 1

−

Pipe System

The vent pipe for a Non Direct Vent (1

−

pipe) system must

terminate outdoors. See 

Figure 60 

for references to vent

clearances required by National code authorities. Allowable

vent terminations are shown in 

Figure 48

.

A combustion air inlet pipe to the outdoors is not required for a

Non

−

Direct Vent System. A 12

−

in. long section of pipe with a

tight radius 2

−

in. (51 mm) 90 degree elbow is required to be

attached to the furnace. See

 Figure 44

 and 

Figure 46

. This

short inlet air pipe helps to ensure inlet air pipe away from

occupants. An extra elbow and/or five fee (1.5 M) of pipe may

be used to accomplish the sound attenuation function.

Termination Requirements for the

Provinces of Alberta and Saskatchewan

The Provinces of Alberta and Saskatchewan require a

minimum unobstructed distance of 4 ft. (1.2m) from the

foundation to the property line of the adjacent lot for vent

termination of any appliance with an input over 35,000 btuh. If

there is less than 4 ft. (1.2m) of unobstructed distance to the

property line of the adjacent lot, no type of vent termination is

permitted for appliances with inputs greater than 35,000 btuh.
There are no additional restrictions on unobstructed distances

greater than 8 ft. (2.4m). All single, two-pipe and concentric

vents may be used, providing all other Code and

manufacturer’s requirements in these instructions are adhered

to. Refer to the appropriate 

Vent Termination

 section above for

locating the vent termination .
If the unobstructed distance from the foundation to the property

line of the adjacent lot is no less than 4 ft. (1.2m) and no

greater than 8 ft. (2.4m), it will be necessary to re-direct the flue

gas plume. In this situation, a concentric vent kit cannot be

used. A 2-pipe termination (or single pipe termination when

permitted) that re-directs the flue gas away by use of an elbow