Reznor APD Manual

Figure 18. Heat Exchanger Condensate Drain Trap
Vent Condensate Drain Installation
NOTE: In Canada, all PVC vent pipe must be approved to ULC S636.
• A 4-inch PVC cleanout cap that is drilled and tapped for a 1/2-inch NPT fitting is furnished with the heater for the
vent drain. All other material must be field-supplied.
• Instructions for installing a condensate drain connection with a vertical vent (US INSTALLATIONS ONLY) using
the factory-provided 4-inch PVC cap are shown in Figure 19.
• Instructions for installing a condensate drain connection with a vertical vent (US OR CANADIAN INSTALLATIONS)
using field-supplied vent and drain components are shown in Figure 20.
• Instructions for installing a condensate drain connection with a vertical or horizontal vent (US INSTALLATIONS
ONLY) in a horizontal vent run using the factory-provided 4-inch PVC cap are shown in Figure 21.
• Instructions for installing a condensate drain connection with a vertical or horizontal vent (US OR CANADIAN
INSTALLATIONS) using field-supplied vent and drain components are shown in Figure 22.
• Ensure that the drain trap is in accordance with Figure 17.
UNIT
Minimum Dimensions for Secondary
Heat Exchanger Condensate Drain Trap
A = 3 inches (76 mm) minimum
B = A + at least 5 inches (127 mm)
Use 1/2-inch PVC pipe or larger for
condensate drain
Drain Trap
Continue into sanitary drain
A
B
NOTE: Bottom of fan guard
is removed for better view.
29
I-UEZ (04-21) 1034347-0

Reznor APD Specifications

General

Brand	Reznor
Model	APD
Category	Gas Heater
Language	English