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All installations and services must be performed by qualified service personnel.
III. GENERAL INSTALLATION
Install this furnace only in a location and position as specified in Section III of these instructions.
This furnace may be installed in an Upflow, Downflow or Horizontal configuration. However it is
critically important to make the prescribed changes for each configuration as detailed in this manual for
safe and proper operation.
This furnace is equipped with orifices size for operation with natural gas. For conversion to Propane Gas
see instruction in Gas Conversion Section of this manual.
These Category Type IV furnaces are shipped completely assembled and wired (internally). See the
Dealer Receiving and Freight Claim Procedure Section of the price guide for parts shortage or damage.
The furnace and duct system must be adjusted to obtain a temperature rise of 45°F to 75°F through the
furnace after installation. The recommended minimum return air temperature is 55°F. Always install
furnace to operate within the furnace's intended temperature rise range with a duct system which has an
external static pressure within the allowable range, as specified in Section III of these instructions. See
furnace rating plate. The installation must conform with local codes, or in the absence of local codes,
with the National Fuel Gas Codes (ANSI Z223.1 or latest edition), and these instructions.
: This furnace is not to be used for temporary heating of buildings or structures under
construction.
Many of the chemicals used during construction, when burned, form acid bearing condensate that can
substantially reduce the life of the heat exchanger.
It is recommended that a commercially available CO alarm be installed in conjunction with any fossil fuel
burning appliance. The CO alarm shall be installed according to the alarm manufacturer's installation
instructions and be listed in accordance with the latest edition of the UL Standard for Single and Multiple
Station Carbon Monoxide Alarms, UL 2034, or the CSA International Standard, Residential Carbon
Monoxide Alarming Devises, CSA 6.19.
NOTICE: The Thermo Pride emblem is shipped loose with the Installation and Operation manual. The
installer should affix the emblem to the burner door as shown in Figure-101.
A. CODES AND CLEARANCES
The following items must be considered when choosing the size and location of the furnace.
1. All local codes and/or regulations take precedence over the instructions in this manual and should be
followed accordingly. In the absence of local codes, installation must conform with these instructions,
regulations of the National Fire Protection Association, provisions of National Electrical Code
(ANSI/NFPA70 or latest edition), and the National Fuel Gas Code (ANSI Z223.1 or latest edition).
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