Reznor X - Appendix; Converting Model X Duct Furnace for Lower Temperature Rise and Higher CFM Application

Form I-X, P/N 150491 R7, Page 28
Converting Model X Duct Furnace for Lower Temperature
Rise and Higher CFM Application
WARNING: This conversion shall be done by a qualied service agency in accordance
with the manufacturer’s instructions and all applicable codes and requirements
of the authority having jurisdiction. If the information in these instructions is not
followed exactly, a re, explosion or production of carbon monoxide may result
causing property damage, personal injury or loss of life. The qualied service agency
performing this work assumes responsibility for the conversion of this appliance to
provide for higher CFM.
WARNING: The instructions in this sheet are designed to prepare a Reznor duct
furnace for increased air throughput conversion prior to installation. If your duct
furnace is installed, for your safety, turn off the gas and the electric before servicing.
NOTE: If airow is being
reversed or other eld-
installed options apply, refer
to the other information
in Paragraph 3.2 before
performing this conversion.
FIGURE 27 - Fill in the
Information on the
Conversion Label
Description/Application
2. Remove the Heat Exchanger Bafes - Refer to FIGURE 27 and identify the air bafes
to be removed. Remove the screws from the support brackets and slide the entire
bafe assembly out of the heat exchanger. Reinstall the screws to plug the holes.
This Reznor duct furnace was factory assembled with the air throughput range listed
on the rating plate. The conversion in these instructions will change the air throughput
range as specied in the table below.
Model and
Size
High Air Throughput (CFM)
MAXIMUM MINIMUM
X 75 2765 735
X 100 3685 980
X 125 4605 1225
X 150 5530 1475
X 175 6450 1720
X 200 7370 1965
X 225 8295 2210
X 250 9215 2455
X 300 11060 2945
X 350 12900 3440
X 400 14745 3930
Verify the size on the heater rating plate. After conrming that the conversion is appro-
priate for the unit, follow the instructions.
1. Fill in the Field Conversion Label - Remove the conversion label, P/N 263310,
from the literature bag. Complete the information.
(date)
(name & address of company making this conversion)
263308
APPENDIX