Reznor RDH with 1-stage gas control or 2-stage gas control Gas Conversion Kit Instructions - Manual (Page 2)

Form CP-PREEVA-GC, P/N 212063 R7, Page 2
Gas Conversion
Instructions
1. Check kit contents for agreement with the parts list and the size of heater being
serviced. (See the parts lists and application for each kit on page 7.)
Conversion of a unit using these kits will not alter the input rate. Refer to the rating
plate on the heater for input rate and other appropriate information.
( NOTE: If adjusted for high altitude operation, input rate will be affected; for high
altitude input ratings and capacities refer to TABLE 3A or 3B, page 8.)
2. Turn off the gas supply at a shutoff valve outside of the heater and turn off
the electrical supply. Open the burner section door.
3. Select and Install the Regulator Spring Kit (valve manufacturer’s conversion
kit)
All conversion kits include one or two regulator spring kits for a single-stage
valve and one for a two-stage valve. Check the package carefully and choose
the regulator spring kit that corresponds with the valve on the heater. NOTE: The
other regulator spring kits will not be used.
WARNING
Regulator spring kits are not interchangeable. Each spring kit
must be used only in the model and type of valve for which the kit
is designated. Verify compatibility before installing the spring kit.
To install the spring regulator conversion kit, follow the valve manufacturer’s
installation instructions that are included with the spring kit. After a new regulator
spring kit is installed, it is necessary to adjust the spring for the correct manifold
pressure. This adjustment can only be made after the heater is in operation;
instructions are included in Step No. 6.
Application and Kit
Selection
General and Warnings (cont’d)
The gas conversion kits in these instructions are for Model PDH, Model SDH, and
Model RDH PREEVA ® Series packaged heaters equipped with gas control Option AG1,
AG2, AG3, AG15, or AG16. Conversion kits include one or two spring kits for a single-
stage valve and one for a two-stage valve. All conversion kits include burner orifices
for multiple sizes. See page 7 for conversion kit P/N’s, application, and components.
NOTE: These kits DO NOT APPLY to units with Control Option AG40, AG60, AG61,
AG62, DG1, DG2, DG5, DG6, D12B, D12C, D12F, or D12G). If converting a unit with
any of these control options, contact the factory.
DANGER
The gas burner in this gas-fired equipment is designed to provide safe, complete combustion.
However, if the installation does not permit the burner to receive the proper supply of combustion
air, complete combustion may not occur. The result is incomplete combustion which produces
carbon monoxide, a poisonous gas that can cause death.
Safe operation of indirect-fired gas burning equipment requires a properly operating vent system
which vents all flue products to the outside atmosphere. FAILURE TO PROVIDE PROPER VENT-
ING WILL RESULT IN A HEALTH HAZARD WHICH COULD CAUSE SERIOUS PERSONAL INJURY
OR DEATH.
On separated combustion Model SDH heaters, install either the horizontal or vertical combustion
air/vent system illustrated in the heater venting manual, using the concentric adapter supplied.
For all heater installations, always comply with the combustion air requirements in the installation
codes and instructions. Model PDH units installed in a confined space must be supplied with
air for combustion as required by Code and in the heater installation manual. Combustion air at
the burner should be regulated only by manufacturer-provided equipment. NEVER RESTRICT OR
OTHERWISE ALTER THE SUPPLY OF COMBUSTION AIR TO ANY HEATER. MAINTAIN THE VENT
OR VENT/COMBUSTION AIR SYSTEM IN STRUCTURALLY SOUND AND PROPER OPERATING
CONDITION.