syncFURNACE OD Instruction & Installation Manual – Rev 09 Pg. 18 of 81
ACCEPTABLE VENT CONFIGURATIONS:
1. Direct Vent, Two-pipe systems consisting of the following termination types;
a. Horizontal air intake and exhaust vent pipes
b. Vertical air intake and exhaust vent pipes
c. Horizontal air intake and vertical exhaust pipes
Installer must follow the instructions of this manual and install in accordance with the National Fuel
Gas Code, ANSI Z223.1 (U.S.) or CSA B149.1 (Canada) and local codes.
2. Direct Exhaust, room dependent combustion air supply;
a. Horizontal exhaust termination
b. Vertical exhaust termination
Installer must follow the instructions of this manual and install in accordance with the National Fuel
Gas Code, ANSI Z223.1 (U.S.) or CSA B149.1 (Canada) and local codes.
ACCEPTABLE VENT MATERIALS EQUIVALENT LENGTHS:
Acceptable Material Canada United States
PVC ULC-S 636 ANSI/ASTM D1785
CPVC ULC-S 635 ANSI/ASTM F441
Stainless Steel, AL-29-4C (SS) ULC-S 636 UL-1738
Polypropylene (PP) ULC-S 636 -
PVC ULC-S 636 ANSI/ASTM D2564
CPVC ULC-S 636 ANSI/ASTM F493
Primer PVC / CPVC ULC-S 636 ANSI/ASTM F656
- If allowed by local codes, combustion-air / air-inlet venting does not require use of high-temperature materials -
ABS is acceptable. It is the responsibility of the installation contractor to check and confirm with local codes /
jurisdiction of authority.
- See Max Equivalent Lengths table (on following page) for allowable flue gas and combustion air material sizes
and lengths.
Required Venting System Standards
Flue Gas (Exhaust) /
Combustion Air (Intake)
Venting System
Vent and Air-Inlet are to be piped separately. This product cannot share a common vent or air-
inlet with multiple water heaters. Failure to comply will result in serious injury or death.
If the above criteria is not properly observed and syncFURNACE OD damage results - any warranty coverage on
syncFURNACE OD and its related components will be null and void.
DO NOT locate product in
areas where high levels of
dust or humidity are present
DO NOT install / operate
syncFURNACE OD during
construction - will cause heavy
suiting of burner and heat
exchanger fouling.
DO NOT operate product in
an area that is under
construction or renovation.