INSTALLATION—CONTINUED
Condensate Drain Installation—Continued
Figure 21. Heat Exchanger Condensate Drain Trap
Vent Condensate Drain Installation (Unit Sizes 055–110)
NOTE: In Canada, all PVC vent pipe must be approved to ULC S636.
Install the vent condensate drain on unit sizes 055–110 using the PVC cleanout cap provided with the heater as
follows (see Figure 22):
1. Connect field-supplied PVC tee to 4-inch vent outlet on back of heater.
2. Connect 4-inch PVC cleanout cap to tee. Cap is drilled and tapped for 1/2-inch NPT drain connection.
3. Connect field-supplied condensate drain to cap.
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.
32
UEZ-IOM (07-23) 1034347-I
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