Installation Location; Closet And Alcove Installation - Thermo Pride MHA1-50N Installation And Service Manual

All installations and services must be performed by qualified service personnel.
B. Installation Location
• These furnaces are designed for indoor installation only.
• These furnaces are NOT to be used as construction heaters.
• The return air duct of the furnace must be sealed air tight to
prevent starvation of the combustion air, especially if the furnace
is located in a closet or confined area.
For best performance locate the furnace so that it is centralized with respect to
the duct system.
Place the unit so that proper venting can be achieved, with a minimum number
of elbows, in accord with the instructions in this manual. The furnace should be
located as close to the chimney (vertical venting) or to the outside vent wall
(horizontal venting) as practical.
The furnace must be located on a level, dry surface in an area, which is free
from and protected from excessive drafts. The furnace must be installed so that
the electrical components are protected from water. If the area becomes wet or
damp at times, the furnace should be raised above the floor using a concrete
base, bricks, patio blocks, etc.
When installing this furnace, provisions must be made to insure the supply of
adequate combustion and ventilation air in accordance with the air for
combustion and ventilation section of the National Fuel Gas Code, NFPA
54/ANSI Z223.1-2002, or latest edition, or applicable provisions of the local
building code. See Section II, E, of this manual
A furnace installed in a residential garage must be installed so the burners and
ignition source are located 18 inches or higher above the floor. Also, the furnace
must be located or protected to avoid physical damage by vehicles.
If this furnace is to be installed horizontally, see Section II, F, of this manual.
C. Closet and Alcove Installation
All furnace models may be installed in a closet or alcove on combustible flooring
with specified (standard) clearances to combustible construction. The furnace
shall not be installed directly on carpeting, tile or other combustible material other
than wood flooring. The MDA1-50, 75, 100, and 125, horizontal / counterflow
furnace, models requires an optional combustible surface-mounting base
for counterflow installation directly on combustible materials. The
combustible floor base model numbers are as follows: 50DA-BASE for MDA1-50
:
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