3
WARNING:
Improper installation, service, adjustment, or
maintenance may cause explosion, fire, electrical
shock or other hazardous conditions which may
result in personal injury or property damage.
Unless otherwise noted in these instructions,
only factory authorized kits or accessories may
be used with this product.
WARNING:
Do not install this furnace if any part has been
submerged under water. A flood damaged furnace
is extremely dangerous. Attempts to use the
furnace may result in fire or explosion. A qualified
service agency should be contacted to inspect the
furnace and to replace any electrical or control
system parts that have been wet or under water.
• To minimize equipment failure or personal injury, it is
essential that only qualified individuals install, service, or
maintain this equipment. If you do not posses mechanical
skills or tools, call your local dealer for assistance.
• Follow all precautions in the literature, on tags, and on
labels provided with the equipment. Read and thoroughly
understand the instructions provided with the equipment
prior to performing the installation and operational
checkout of the equipment.
• Use caution when handling this appliance or removing
components. Personal injury can occur from sharp metal
edges present in all sheet metal constructed equipment.
• Do not store any of the following on, or in contact with,
the unit: Rags, brooms, vacuum cleaners, or other
cleaning tools, spray or aerosol cans, soap powders,
bleaches, waxes, cleaning compounds, plastics or plastic
containers, paper bags or other paper products, gasoline,
kerosene, cigarette lighter fluid, dry cleaning fluids, paint
thinners, or other volatile fluids.
• The installer should become familiar with the units
wiring and ladder diagram before making any electrical
connections to the unit. See
,
• Always reinstall the doors on the furnace after
servicing. Do not operate the furnace without all doors
and covers in place.
REQUIREMENTS & CODES
WARNING:
The information listed below must be followed
during the installation, service, and operation
of this furnace. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious personal
injury or death.
• This furnace must be installed in accordance with these
instructions, all applicable local building codes and the
FIGURES & TABLES ......................................................31
Figure 23. *SD Cabinet Dimensions ............................. 31
Table 7. *SD 050U-23EA Blower Data
(Heating Airflow) ............................................ 32
Table 8. *SD 050U-23EA Blower Data
(Cooling Airflow) ............................................. 33
Table 9. *SD 100U-35EC Blower Data
(Heating Airflow) ............................................ 34
Table 10. *SD 100U-35EC Blower Data
(Cooling Airflow) ........................................... 35
Figure 24. *SD Wiring Diagram .................................... 36
Figure 25. *SD Ladder Diagram ................................... 37
Table 11. Gas Flow Rates ............................................ 38
Table 12. Gas Pipe Capacities ..................................... 38
Table 13. Natural Gas Heating Values ......................... 38
Table 14. Vent Termination Clearances ....................... 39
Figure 26. Horizontal & Vertical Venting ...................... 40
Figure 27. Venting Options for Upflow Installations ..... 41
Figure 28. Venting Options for 1 Pipe
Horizontal Installations ................................ 42
Figure 29. Venting Options for 2-Pipe
Horizontal Installations ................................ 43
Figure 30. *SD 050U-23EA Pressure Switch
Tube Locations ........................................... 44
Figure 31. *SD 100U-35EC Pressure Switch
Tube Locations ........................................... 45
INSTALLATION CHECKLIST .........................................48
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special notes highlighted in the manual. Safety
markings are used frequently throughout this manual to
designate a degree or level of seriousness and should not
be ignored.
WARNING
- Indicates a potentially hazardous
situation that if not avoided, could result in personal injury or
death.
CAUTION
- Indicates a potentially hazardous situation
that if not avoided, may result in minor or moderate injury or
property damage.
WARNING:
The safety information listed in this manual must
be followed during the installation, service, and
operation of this unit. Unqualified individuals
should not attempt to interpret these instructions
or install this equipment. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious personal
injury or death.
WARNING:
Unless otherwise noted in these instructions,
only factory authorized kits or accessories may
be used with or when modifying this product.
