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SUF SERVICE HANDBOOK
INSTALLATION
State Water Heaters Technical Training Department
Ashland City, Tennessee © 2004
5 STC-077
VENTING CONFIGURATIONS
VENTING MATERIALS
This unit can be vented using only PVC (Class 160, ASTM D-2241; Schedule 40, ASTM D-1785; or
Cellular Core Schedule 40 DWV, ASTM F-891), Schedule 40 CPVC (ATSM F-411), or ABS (ASTM
D-2661) pipe. The fittings, other than the TERMINATIONS should be equivalent to PVC-DWV fit-
tings meeting ASTM D-2665 (Use CPVC fittings, ASTM F-438 for CPVC pipe and ABS fittings,
ASTM D-2661/3311 for ABS pipe. If CPVC or ABS pipe and fittings are used, then the proper
cement must be used for all joints, including joining the pipe to the Termination Tee (PVC Material).
PVC Materials should use ASTM D-2564 Grade Cement; CPVC Material should use ASTM F-493
Grade Cement and; ABS Materials should use ASTM D-2235 Grade Cement.
For water heaters in locations with high ambient temperatures (above 100°F) and/or insufficient
dilution air, it is recommended that CPVC or ABS pipe and fittings (MUST USE SUPPLIED VENT
TERMINAL) be used.
SEALED DIRECT
VENT VERTICAL
SEALED DIRECT
VENT SIDEWALL
INDOOR CONVENTIONAL
VERTICAL
INDOOR CONVENTIONAL
SIDEWALL
SEALED DIRECT VENT
HORIZONTAL INTAKE
VERTICAL EXHAUST
SEALED DIRECT VENT
VERTICAL INTAKE
HORIZONTAL EXHAUST
SEALED DIRECT VENT
W/ CONCENTRIC VENT
VERTICAL TERMINA-
SEALED DIRECT VENT
W/ CONCENTRIC VENT
HORIZONTAL TERMINATION