Installation and Service Manual

WARNING
This conversion kit shall be installed 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 or explosion may
result causing property damage, personal
injury or loss of life. The qualified service
agency performing this work assumes
responsibility for the proper conversion of
this furnace with this kit.
AVERTISSEMENT
Cet ensemble de conversion ne doit etre
installé que par le représentant d'un
orgasnisme qualifié et conformément
aux instructions du fabricant et à tous
les codes et exigences applicables de
l’autorité compétente. Quiconque ne
respecte pas à la lettre les instructions
dans le présent manuel risque de
déclencher un incendie ou une explosion
entrainent des dommages matériels,
des lésions corporelles ou la perte de
vies humaines. L’organisme qualifié qui
effectue les travaux est responsable de la
conversion correcte de ce générateur d’air
chaud à l’aide de cet ensemble.
THIS MANUAL IS THE PROPERTY OF THE OWNER. PLEASE BE SURE TO LEAVE IT WITH HIM WHEN YOU LEAVE THE JOB.
The natural gas kits appearing in this bulletin are for use with
units which are going to be installed between 0 and 2000
ft. elevation. If a unit is to be installed at higher elevations, a
special “high altitude” natural gas orifice kit must be ordered
in addition to the natural gas conversion kits shown here. See
Modine Bulletin
75-537 for selection of “high altitude” orifice kits.
When converting units to propane at elevations over 2000 ft.,
the main burner orifices in the natural conversion kit must be
replaced with the orifices from the “high altitude” orifice kit.
The remaining components of the natural gas kit, those other
than the main burner orifices, are still required to complete the
conversion to natural gas, regardless of the elevation at which
the unit is installed.
Identifying the Model, Control Code and
Date of Manufacture
Figure 2.1 on the next page explains Modine HD/HDS unit heater
model number designations and serial number designations.
Markings pertinent to verifying correct application of the conversion
kit are identified and explained in detail. All prerequisites must
be satisfied before the unit is deemed convertible.
1. The first two characters in the model number are letters.
These letters identify the style of unit heater. These first three
characters must be HD or HDS for it to be convertible.
2. The control code for the unit to be converted must be 74.
3. Finally, the serial number shown in Figure 2.2 calls out the
date the unit was built. Any unit manufactured after the 12th
week of 1998, is acceptable for conversion.
SELECTION AND INSTALLATION INSTRUCTIONS
conversion from propane gas to natural gas for
models HD, HDS
(For hot surface ignition, control code 74)
75-514.2
5H079446
May, 2007