2
Table of Contents
I.
Dimensions and Ratings.
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.
.
.
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.
.
3 – 4
II.
Safety Rules and Precautions. .
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.
.
.
.
.
5
III.
Installation Requirements.
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.
.
.
.
.
.
6 – 7
a. Direction of Airflow.
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.
.
.
.
.
6
b. Application Guidelines.
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.
.
.
.
.
7
IV.
Duct Installation.
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.
.
.
.
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.
.
7 – 8
V.
Combustion Air Supply.
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.
.
.
.
.
.
9
VI.
Venting – General.
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.
.
9 – 10
a. Outdoor Installations.
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.
.
10 – 11
b. Indoor Installations.
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.
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.
.
11 – 16
c. Separated Combustion – Indoor. .
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.
.
16 – 20
VII.
Condensate Drains – General. .
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.
.
.
.
.
20
a. Outdoor Installations.
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.
.
21 – 23
b. Common Condensate Manifold. .
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.
.
.
23
c. Indoor Installations.
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.
.
.
.
.
23 – 25
VIII.
Condensate Neutralization. .
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.
.
.
.
.
25
IX.
Gas Supply Piping and Connections. .
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.
.
.
.
26 - 27
X.
Electrical Supply and Ratings. .
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.
.
.
.
.
28
XI.
Airflow Proving Switch.
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.
.
.
.
.
.
29
XII.
Operation and Safety. .
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.
.
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.
.
29 – 31
XIII.
Operating and Safety Controls.
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.
.
.
.
.
31 – 32
XIV.
Periodic Seasonal Maintenance and Inspection.
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.
.
.
32
XV. Annual Maintenance and Inspection. .
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.
.
.
.
33
