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87%-Efficiency Boilers –
Special Instructions
Water Piping
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Venting
Appliance Categories
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NOTE: !DG 699>I>DC6A >C;DGB6I>DC DC 6EEA>6C8:
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8D9:H
10°F T 20°F T 30°F T Min. Flow Max Flow
Model
No.
gpm
P (ft) gpm P (ft) gpm P (ft) gpm P (ft) T gpm P (ft) T
302BE
52 3.3 26 <1.0 N/A N/A 20 <1.0 26 90 9.8 6
402BE 69 5.8 35 1.5 23 <1.0 20 <1.0 35 90 10.0 8
502BE 87 9.1 44 2.5 29 1.1 22 <1.0 40 90 10.4 10
652BE N/A N/A 57 4.4 38 2.0 28 1.1 40 90 10.8 13
752BE N/A N/A 65 6.1 44 2.8 33 1.6 40 90 11.3 15
902BE N/A N/A 78 8.9 52 4.1 39 2.3 40 90 11.7 17
Combustion
Air Supply
Exhaust
Configuration
Heater Venting
Category
Certified
Materials
Combustion Air
Inlet Material
Vertical Natural Draft
Venting
II
Stainless Steel
(Gas Tight)
From Inside Building
(Non-Direct Venting)
Horizontal Through-
the-Wall Venting
IV AL29-4C
Vertical Natural Draft
Venting
II
Stainless Steel
(Gas Tight)
Galvanized Steel
PVC
From Outside Building
(Direct Venting)
Horizontal Through-
the-Wall Venting
IV AL29-4C
ABS
CPVC
Table S: Heater Rate of Flow and Pressure Drop
Table T: Category Determination for Venting Purpose and Venting Arrangement
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