Appendix – Reznor HRPD (Outdoor Duct Furnaces) Unit Installation Manual User Manual
Page 29
Form I-RP/HRPD, P/N 132210 R14, Page 29
Converting Model RP Duct Furnace for Lower Temperature
Rise and Higher CFM Application
WARNING
This conversion shall be done by a qualified 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
fire, explosion or production of carbon monoxide may result causing property damage,
personal injury or loss of life. The qualified 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 airflow is being
reversed or other field-
installed options apply,
refer to the information
in Paragraph 3.2 before
performing this conversion.
FIGURE 22 - Fill in the
Information on the
Conversion Label
Description/Application
2. Remove the Heat Exchanger Baffles - Refer to FIGURE 23 and identify the air baffles
to be removed. Remove the screws from the support brackets and slide the entire
baffle 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 specified in the table below.
Model and
Size
High Air Throughput (CFM)
MAXIMUM
MINIMUM
RP 125
4605
1225
RP 150
5530
1475
RP 175
6450
1720
RP 200
7370
1965
RP 225
8295
2210
RP 250
9215
2455
RP 300
11060
2945
RP 350
12900
3440
RP 400
14745
3930
Verify the size on the heater rating plate. After confirming 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
Instructions