Onsiderations - Goodman *MH8 Installation Instructions Manual

with "ASHRAE Guide" or "Manual J-Load Calculations" published by
the Air Conditioning Contractors of America.
In the USA, this furnace MUST be installed in accordance with the
latest edition of the ANSI Z223.1 booklet entitled "National Fuel
Gas Code" (NFPA 54), and the requirements or codes of the local
utility or other authority having jurisdiction. In Canada, this furnace
must be installed in accordance with the current CAN/CGA-B149.1
& 2 Gas Installation Codes, local plumbing or waste water codes and
other applicable codes. Additional helpful publications available
from the NFPA are, NFPA 90A - Installation of Air Conditioning and
Ventilating System and NFPA 90B - Warm Air Heating and Air Condi-
tioning System.
All venting shall be in accordance with PART 7, Venting of Equip-
ment, of the National Fuel Gas Code, ANSI Z223.1, or applicable
local building and/or air conditioning codes. These publications are
available from:
National Fire Protection Association, Inc.
Batterymarch Park, Quincy, MA 02269
NOTE: Furnaces with NOx screens meet the California NOx emis- NOTE: NOTE: NOTE: NOTE:
sion standards and California seasonal efficiency standards. ANNUAL
inspections of the furnace and its vent system is strongly recom-
mended.
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O C O C O CA A A A A TION TION TION EQUIREMENTS S S S S A N D EQUIREMENT EQUIREMENT
O C O C TION TION EQUIREMENT EQUIREMENT
Your unit model type determines which installation procedures must
be used. For *MH8, *MS8, and GHS8 models, you must follow in-
structions for Horizontal Left, Horizontal Right or Upflow installa-
tions only. These furnaces are not approved for Downflow installa-
tions.
GD(H,S) ARE NOT APPROVED FOR HORIZON- GD(H,S) ARE NOT APPROVED FOR HORIZON-
Downflow models GD(H,S) ARE NOT APPROVED FOR HORIZON- GD(H,S) ARE NOT APPROVED FOR HORIZON- GD(H,S) ARE NOT APPROVED FOR HORIZON-
T T T T T AL OR UPFL AL OR UPFL AL OR UPFL AL OR UPFL AL OR UPFLOW INST OW INST OW INST OW INSTALLA OW INST ALLATIONS ALLA ALLA ALLA
instructions for downflow installation only.
T
O PREVENT POSSIBLE EQUIPMENT
PERSONAL INJURY OR DEATH
OBSERVED WHEN INSTALLING
Follow the instructions listed below when selecting a furnace loca-
tion. Refer also to the guidelines provided in Section V, Combustion
and Ventilation Air Requirements.
• Centrally locate the furnace with respect to the proposed
or existing air distribution system.
• Ensure the temperature of the return air entering the
furnace is between 55°F and 100°F when the furnace is
heating.
• Provisions must be made for venting combustion products
outdoors through a proper venting system. The length of
flue pipe could be a limiting factor in locating the furnace.
• Ensure adequate combustion air is available for the furnace.
Improper or insufficient combustion air can expose
building occupants to gas combustion products that could
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A N D A N D ONSIDERA A A A A TIONS ONSIDER ONSIDER
A N D A N D ONSIDER ONSIDER
TIONS TIONS TIONS. For these models, use only the TIONS
WARNING
,
DAMAGE PROPERTY DAMAGE
,
THE FOLLOWING BULLET POINTS
.
THIS UNIT
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O CA A A A A T I O N O C O C O C O C T I O N T I O N T I O N T I O N E Q U I R E M E N T E Q U I R E M E N T E Q U I R E M E N T E Q U I R E M E N TS S S S S A N D E Q U I R E M E N T
include carbon monoxide. Refer to Section V, Combustion
and Ventilation Air Requirements.
• The furnace must be level. If the furnace is to be set on a
floor that may become wet or damp at times, the furnace
should be supported above the floor on a concrete base
sized approximately 1-1/2" larger than the base of the
furnace.
• Ensure upflow or horizontal furnaces are not installed
directly on carpeting, or any other combustible material.
The only combustible material allowed is wood.
• Exposure to contaminated combustion air will result in
safety and performance-related problems. Do not install
the furnace where the combustion air is exposed to the
following substances:
chlorine-based swimming pool chemicals
cleaning solutions (such as perchloroethylene)
TIONS TIONS
TIONS TIONS
antistatic fabric softeners for clothes dryers
• If the furnace is used in connection with a cooling unit,
install the furnace upstream or in parallel with the cooling
unit coil. Premature heat exchanger failure will result if
the cooling unit coil is placed ahead of the furnace.
• If the furnace is installed in a residential garage, position
the furnace so that the burners and ignition source are
located not less than 18 inches (457 mm) above the floor.
Protect the furnace from physical damage by vehicles.
• If the furnace is installed horizontally, the furnace access
doors must be vertical so that the burners fire horizontally
,
into the heat exchanger. Do not install the unit with the
access doors on the "up/top" or "down/bottom" side of the
MUST BE
furnace.
• Do not connect this furnace to a chimney flue that serves
a separate appliance designed to burn solid fuel.
• For counterflow installations, the air conditioning coil must
be downstream from the heat exchanger of the furnace.
• Counterflow installation over a noncombustible floor.
Before setting the furnace over the plenum opening,
ensure the surface around the opening is smooth and
level. A tight seal should be made between the furnace
base and floor by using a silicon rubber caulking compound
or cement grout.
• Counterflow installation over a combustible floor. If
installation over a combustible floor becomes necessary,
use an accessory subbase (see Specification Sheet
applicable to your model for details). A special accessory
subbase must be used for upright counterflow unit
installations over any combustible material including
7
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A N D A N D A N D A N D
chlorinated waxes or cleaners
water softening chemicals
deicing salts or chemicals
carbon tetrachloride
halogen type refrigerants
printing inks
paint removers
varnishes
hydrochloric acid
cements and glues
and masonry acid washing materials
O N S I D E R O N S I D E R O N S I D E RA A A A A T I O N S O N S I D E R O N S I D E R T I O N S T I O N S T I O N S T I O N S