Reznor UDAP-CV with option AV6 Option - Installation - Common Vent - Manual (Page 2)

Form I-UD-V-CV, P/N195677R5, Page 2
1.0 Venting Requirements for Model UDAP-CV
Venting must be in accordance with these instructions, the National Fuel Gas Code Z223.1 or CSA B149.1
and B149.2, Installation Code for Gas Burning Appliances and Equipment, and all local codes. Local require-
ments supersede national requirements.
When an existing appliance is removed or replaced in a venting system, the venting system may not be prop-
erly sized to vent the attached appliances. An improperly sized venting system may result in the formation of
condensate, leakage, and/or spillage.
Model UDAP-CV heaters require a vertical vent. Common vertical venting is permitted when installed accord-
ing to the instructions in SECTION 2. Venting instructions are divided into two sections. Select and follow the
instructions in SECTION I or 2.
SECTION 1 Venting a Model UDAP-CV heater with a dedicated vent systems a single
Category I appliance ......................................... Begin below (Paragraph 2)
SECTION 2 Venting a Model UDAP-CV heater in a common vent with other Category I
appliance(s) ....................................................... Go to Page 5 (Paragraph 3)
2.0 SECTION 1 -
Requirements
and Instruc-
tions for Vent-
ing a Single
Category I
Model UDAP-
CV
Comply with these requirements to vent a Model UDAP-CV as a Category I
appliance into a dedicated vertical vent.
2.1 SECTION 1 - Type of Pipe
Vertical Vent Pipe - Use Type B double-wall pipe for all installations.
Horizontal Vent Connector Pipe - Sizes 30 and 45 require Type B double-
wall pipe for all installations.
Depending on the installation (Refer to
TABLE 1A or 1B), Sizes 60, 75, and
100 may use either Type B double-wall vent pipe or 26-gauge or heavier gal-
vanized single-wall vent pipe.
WARNING: Use only the venting instruction section that applies to the installation.
Do not combine any requirements. Use these venting instructions only with Model
UDAP heaters with -CV in the Model No. Failure to comply could result in severe
personal injury of death and/or property damage.
WARNING: Installation should be done by a qualified agency in accordance with
these instructions. The qualified service agency installing this heater is responsible
for the installation.
General ..............................................................1
1.0 Venting Requirements for
Model UDAP-CV ......................................... 2
2.0 SECTION 1 - Requirements and Instruc-
tions for Venting a Single Category I
Model UDAP-CV ......................................2-4
2.1 SECTION 1 - Type of Pipe ............................ 2
2.2 SECTION 1 - Vent Diameter and Length ...... 3
2.4 SECTION 1 - Condensation .......................... 4
2.5 SECTION 1 - Vent System Support ............. 4
2.6 SECTION 1 - Vent Terminal ......................... 4
2.7 SECTION 1 - Clearance to Combustibles ..... 4
2.3 SECTION 1 - Vent System Joints/Sealing ... 4
3.0 SECTION 2 - Requirements and Instruc-
tions for Category I Common Venting
of a Model UDAP-CV ..............................5-8
3.1 SECTION 2 - Model UDAP-CV Category I
Common Venting Instructions ....................... 6
3.2 SECTION 2 - Vent System Joints/Sealing ... 7
3.4 SECTION 2 - Vent System Support ............. 7
3.3 SECTION 2 - Condensation .......................... 7
3.5 SECTION 2 - Vent Terminal .......................... 8
3.6 SECTION 2 - Clearance to Combustibles ..... 8
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