International comfort products R80ESL Installation, Start-Up, Operating And Service And Maintenance Instructions page 23

R80ESN/R80ESL(Series A): Installation, Start–Up, Operating and Service and Maintenance Instructions
An accessory Vent Guard Kit is REQUIRED for downflow applications
where the vent exits through the lower portion of the furnace casing. See
Fig. 34 and Specification Sheet for accessory listing. Refer to the Vent
Guard Kit Instructions for complete details.
The horizontal portion of the venting system shall slope upwards not less
than 1/4-in. per linear ft. (21 mm/M) from the furnace to the vent and
shall be rigidly supported every 5 ft. (2 M) or less with metal hangers or
straps to ensure there is no movement after installation.
Caution!! For the following applications, use the minimum vertical vent heights as specified below.
FURNACE
ORIENTATION
Downflow
Horizontal Left
Horizontal Left
Horizontal Left
Downflow
Downflow
NOTE: All vent configurations must also meet National Fuel Gas Code venting requirements NFGC
*4 in. (102 mm) inside casing or vent guard
**Including 4 in. (102 mm) vent section(s)
Fig. 31 – Downflow Application-Vent Elbow Up then Left
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
For all other applications, follow exclusively the National Fuel Gas Code.
VENT ORIENTATION
Vent elbow left, then up Fig. 34
Vent elbow right, then up Fig. 43
Vent Elbow up Fig. 41
Vent elbow right Fig. 40
Vent elbow up then left Fig. 31
Vent elbow up, then right Fig. 37
SEE NOTES:1,2,3,4,5,7,8,9
on the page following
these figures
SIDEWALL VENTING
This furnace is not approved for direct sidewall horizontal venting.
Per section 12.4.3 of the current edition of NFPA54/ANSI Z223.1, any
listed mechanical venter may be used, when approved by the authority
having jurisdiction.
Select the listed mechanical venter to match the Btuh input of the
furnace being vented.
requirements for venting and termination included with the listed
mechanical venter.
FURNACE INPUT
(BTUH/HR)
154,000 132,000 110,000
154,000 132,000
154,000 132,000
154,000
110,000
110,000
SEE NOTES: 1,2,3,4,7,8,9
on the pages following
these figures
A03210
Fig. 32 – Upflow Application-Vent Elbow Right
23
Follow all manufacturer's
MIN. VENT
DIAMETER MIN. VERTICAL VENT HEIGHT
IN. (mm)* FT. (M)**
5 (127) 12 (3.6)
5 (127) 7 (2.1)
5 (127) 7 (2.1)
5 (127) 7 (2.1)
5 (127) 10 (3.0)
5 (127) 10 (3.0)
installation
A03209