Payne C Series Installation, Start-Up, Operating, Service And Maintenance Instructions page 31

1. For common vent, vent connector sizing and vent material:
United States--use the NFGC
Canada--use the NSCNGPIC
2. Immediately increase to 5-inch or 6-inch vent connector outside furnace casing when 5-inch vent connector is required, refer to Note 1 above.
3. Side outlet vent for upflow and downflow installations must use Type B vent immediately after exiting the furnace, except when
KGAVG0101DFG, Downflow Vent Guard Kit, is used in the downflow position.
4. Type-B vent where required, refer to Note 1 above.
5. Four-inch single-wall (26 ga. min.) vent must be used inside furnace casing and when the KGAVG0101DFG Downflow Vent Guard Kit is
used external to the furnace.
6. Accessory Downflow Vent Guard Kit, KGAVG0101DFG required in downflow installations with lower vent configuration.
7. Chimney Adapter Kit may be required for exterior masonry chimney applications. Refer to Chimney Adapter Kit, KGACA02014FC or
KGACA02015FC, for sizing and complete application details.
8. Secure vent connector to furnace elbow with (2) corrosion-resistant sheet metal screws, spaced approximately 180° apart.
9. Secure all other single wall vent connector joints with (3) corrosion resistant screws spaced approximately 120° apart. Secure Type-B vent
connectors per vent connector manufacturer's recommendations.
10. The total height of the vent and connector shall be at least seven feet for the 154,000 Btuh gas input rate model when installed in a downflow
application with furnace elbow turned to left side with the connector elbow outside furnace casing pointing upward. (See Fig. 36.)
Caution!! For the following applications, use the minimum vertical vent heights as specified below.
For all other applications, follow exclusively the National Fuel Gas Code.
FURNACE ORIENTATION VENT ORIENTATION
Vent elbow left, then up
Downflow
Horizontal Left
Horizontal Left
Horizontal Left
Vent elbow up then left
Downflow
Vent elbow up, then right
Downflow
NOTE: All vent configurations must also meet National Fuel Gas Code venting requirements NFGC
*4 in. inside casing or vent guard
**Including 4 in. vent section(s)
Fig. 44—Horizontal Right Application-Vent Elbow Left
Venting Notes for Figures 32-44
FURNACE INPUT(BTU/HR)
Fig. 36
110,000(036/-12 only)
Vent elbow right,
then up
Fig. 39
Vent Elbow up
Fig. 40
Vent elbow right
Fig. 41
Fig. 34 (036/-12 only)
Fig. 37 (036/-12 only)
SEE NOTES: 1,2,4,5,7,8,9
MINIMUM
VENT DIAMETER (IN.)*
154,000
132,000 5
154,000
5
132,000
154,000
5
132,000
154,000 5
110,000
5
110,000
5
30
MINIMUM VERTICAL VENT HEIGHT (FT)**
12
7
7
7
10
10
A02068