Installation Instructions & Homeowner’s Information
Approved for use in manufactured homes.
NOTE: Read the entire instruction manual before starting the 
installation.
Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
LOCATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
POSITION UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Line Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Thermostat Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Thermostat Wiring Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Transformer Information
(applicable to on-site HVAC contractor) . . . . . . . . . . . . . . . . . . . . 4
Ground Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Filtered Grille Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Minimum CFM and Motor Speed Selection
(applicable to on-site HVAC contractor) . . . . . . . . . . . . . . . . . . . . 5
Sequence of operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Continuous Fan (Whole House Ventilation) . . . . . . . . . . . . . . . . . 5
Electric Heat or Emergency Heat Mode  . . . . . . . . . . . . . . . . . . . . 5
HOMEOWNER’S INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . 11
THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Heating Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cooling Mode  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Temperature Control  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fan Control (Whole House Ventilation) . . . . . . . . . . . . . . . . . . . 11
WHAT TO DO IF YOUR SYSTEM DOES NOT WORK . . . . . . . 11
Before Requesting a Service Call: . . . . . . . . . . . . . . . . . . . . . . . . 11
REGULAR MAINTENANCE REQUIREMENTS . . . . . . . . . . . . . 11
Indoor Unit Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Condensate Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Outdoor Unit Coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Painted Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SAFETY CONSIDERATIONS
Improper  installation,  adjustment,  alteration,  service,  maintenance,  or
use can cause explosion, fire, electrical shock or other conditions which
may  cause  death,  personal  injury  or  property  damage.  Consult  a
qualified  installer,  service  agency,  or  your  distributor  or  branch  for
information  or  assistance.  The  qualified  installer  or  agency  must  use
factory-authorized  kits  or  accessories  when  modifying  this  product.
Refer to the individual instructions packaged with the kits or accessories
when installing.
Follow  all  safety  codes.  Wear  safety  glasses,  protective  clothing  and
work  gloves.  Use  quenching  cloths  for  brazing  operations.  Have  fire
extinguisher available. Read these instructions thoroughly and follow all
warnings or cautions attached to the unit. Consult local building codes
and  the  applicable  editions  of  the  National  Electrical  Codes  (NEC)
NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical Code
CSA C22.1.
Recognize safety information. This is the safety-alert symbol  . When
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury.
Understand  the  signal  words  DANGER,  WARNING  and  CAUTION.
These words are used with the safety-alert symbol. DANGER identifies
the most serious hazards which will result in  severe personal injury or
death.  WARNING  signifies  hazards  which  could  result  in  personal
injury or death.  CAUTION is used to  identify unsafe  practices, which
may  result  in  minor  personal  injury  or  product  and  property  damage.
NOTE  is  used  to  highlight  suggestions  which  will  result  in  enhanced
installation, reliability, or operation.
INTRODUCTION
Model  FED  has been designed  for downflow applications. Models  are
available for electric heat sizes 10 kW – 20 kW. All models use an ECM
motor.
FED models contain a factory supplied replaceable air filter. 
LOCATION
Select the best position which suits the installation site conditions. The
location should provide adequate structural support, space in the front of
the  unit  for  service  access,  clearance  for  return  air  and  supply  duct
connections,  space  for  refrigerant  piping  connections  and  condensate
drain line connections.
NOTE: Internal filter can be accessed from a separate filter door.
FED “B” Series
Downflow Electric Furnace
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying or servicing system, always turn off main
power to system. There may be more than one disconnect switch. Lock
out and tag switch with a suitable warning label.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet  metal  parts may have  sharp  edges  or  burrs.  Use  care  and  wear
appropriate protective clothing and gloves when handling parts.