Installation / Operation Instruction Manual

11
Venting continued-
Venting System Condensation
Condensate formation does not occur in all installations of power vented water
heaters, but should be protected against on installations where condensation
can form in the venting system.
Formation of condensation in the venting system of Power Vented water
heaters is dependent upon installation conditions including, but not limited to:
ambient temperature and humidity of installation location;
ambient temperature and humidity of venting space;
vent distance and slope;
and product usage.
In order to effectively control condensate from adversely affecting the
mechanical components of the water heater several methods may be
employed:
1. For horizontal installations the vent pipe can be installed with a downward slope
(not less than 1/8" (3 cm)) and away from the blower.
Approved Venting Materials
For installations in the US
only
 PVC DWV (ASTM D-2665)
 PVC Sch. 40, 80, 120 (ASTM-
D1785)
 CPVC Sch. 40, 80 (ASTM-
F441)
 CPVC (ASTM D2846)
 ABS Sch. 40 DWV (ASTM
D2661)
For installations in CANADA
 ULC S636 approved PVC for
flue gas venting rated Class II,
65°C
 ULC S636 approved CPVC for
flue gas venting rated Class II,
65°C
Approved Primers and Cements
For installations in the US
only
 PVC and CPVC Primer (ASTM-
F656)
 PVC Cement (ASTM D-2564)
 CPVC Cement (ASTM F493)
 ABS Primer and Cement
(ASTM D-2235)
For installations in CANADA
 ULC S636 approved Primer
and Cement for flue gas
venting rated Class II, 65°C
NOTICE
Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel
®
(polyphenosulfone) in non-metallic venting systems is prohibited, and
covering non-metallic venting with thermal insulation is prohibited.