J962V Installation Manual

ManualsBrandsOxbox ManualsFurnacesJ962V - 100k BTU - Two-Stage Gas Furnace - 96% AFUE

the equivalent of 2.5 feet of linear run. A 90 degree tee

is worth 7 ft.

The equivalent lengths of tees and various elbows are

listed in Table 1 . Measure the linear length of the vent run

and then add in the equivalent length of each ﬁtting. The

total length, including the equivalent ﬁtting lengths, must

be less than the maximum length speciﬁed in Table 1.

Vent Pipe Installation

CAUTION:

Combustion air must not be drawn from a

corrosive atmosphere.

This furnace has been certiﬁed for installation with zero

clearance between vent piping and combustible surfaces.

However, it is good practice to allow space for convenience

in installation and service.

• In the absence of local codes, the location of any

combustion air inlet relative to any vent terminal must

be at least 8 inches. This includes installations involving

more than one furnace.

• The quality of outdoor air must also be considered. Be

sure that the combustion air intake is not located near

a source of solvent fumes or other chemicals which

can cause corrosion of the furnace combustion system.

(See list of substances on page 5).

• Route piping as direct as possible between the furnace

and the outdoors. Horizontal piping from inducer to

the ﬂue pipe must be sloped 1/4” per foot to ensure

condensate ﬂows towards the drain tee or PVC trap.

Longer vent runs require larger pipe diameters. Refer

to the Inducer & Venting Options section on page 15

for additional information.

• If a Direct Vent (2-pipe) system is used, the combustion

air intake and the vent exhaust must be located in the

same atmospheric pressure zone. This means both

pipes must exit the building through the same portion

of exterior wall or roof as shown in Figure 7, Figure 8,

Figure 9

, & Figure 10 (page 12).

• Piping must be mechanically supported so that its weight

does not bear on the furnace. Pipe supports must be

installed a minimum of every 5 feet along the vent run

to ensure no displacement after installation. Supports

may be at shorter intervals if necessary to ensure that

there are no sagging sections that can trap condensate.

See Figure 28 (page 34). It is recommended to install

couplings along the vent pipe, on either side of the

exterior wall. These couplings may be required by local

code.

• If breakable connections are required in the combustion

air inlet pipe (if present) and exhaust vent piping, then

straight neoprene couplings for 2” or 3” piping with

hose clamps can be used. These couplings can be

ordered through your local furnace distributor. To install

a coupling:

1. Slide the rubber coupling over the end of the pipe that

is attached to the furnace and secure it with one of the

hose clamps.

2. Slide the other end of the rubber coupling onto the other

pipe from the vent.

3. Secure the coupling with the second hose clamp,

ensuring that the connection is tight and leak free.

Outdoor Terminations - Horizontal Venting

• Vent and combustion air intake terminations shall

be installed as depicted in Figure 7 & Figure 8 and in

accordance with these instructions:

• Vent termination clearances must be consistent with the

NFGC, ANSI 2223.1/NFPA 54 and/or the CSA B149.1,

Natural Gas and Propane Installation Code. Table 12

(page 32)

lists the necessary distances from the vent

termination to windows and building air intakes.

• Vent and combustion air intake terminations must

be located to ensure proper furnace operation and

conformance to applicable codes. A vent terminal

must be located at least 3 feet above any forced air

inlet located within 10 feet. This does not apply to the

combustion air inlet of a direct vent (two pipe) appliance.

In Canada, CSA B149.1, takes precedence over these

instructions. See Table 12.

• All minimum clearances must be maintained to protect

building materials from degradation by ﬂue gases. See

Figure 7.

• For optimal performance, vent the furnace through a

wall that experiences the least exposure to winter winds.

• The vent termination shall be located at least 3 ft.

horizontally from any electric meter, gas meter, regulator

and any relief equipment. These distances apply ONLY

Table 1. Vent Pipe Lengths

FURNACE

MODELS

(BTU)

SINGLE VENT PIPE LENGTH (FT.)

WITH 1 LONG RADIUS ELBOW*

DUAL VENT PIPE LENGTH (FT.)

WITH 1 LONG RADIUS ELBOW ON EACH PIPE*

OUTLET

2” DIAMETER

OUTLET

3” DIAMETER

INLET / OUTLET

2” DIAMETER

INLET / OUTLET

3” DIAMETER

60,000 60 90 60 90

80,000 30 90 30 90

100,000 30 90 25 90

115,000 N/A 90 N/A 90

*NOTES:

1. Subtract 2.5 ft. for each additional 2 inch long radius elbow, 5 ft. for each additional 2 inch short radius elbow, 3.5 ft. for each additional 3 inch

long radius elbow, and 7 ft. for each additional 3 inch short radius elbow. Subtract 5 ft for each 2” tee and 8 ft for each 3” tee. Two 45 degree

elbows are equivalent to one 90 degree elbow.

2. This table applies for elevations from sea level to 2,000 ft. For higher elevations, decrease pipe lengths by 8% per 1,000 ft of altitude.