Lennox Allied Air EFV Series Installation Instructions Manual
Lennox Allied Air EFV Series Installation Instructions Manual

Lennox Allied Air EFV Series Installation Instructions Manual

Warm air unit

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This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
Improper
installation,
maintenance can cause injury or property damage.
Refer to this manual. For assistance or additional
information, consult a qualified installer or service
agency.
The information contained in this manual is intended
for use by qualified service technicians familiar with
safety procedures and equipped with the proper tools
and test instruments. Failure to carefully read and follow
all instructions in this manual can result in equipment
malfunction, property damage, personal injury, and/or
death.
Disconnect all power supplies to both the indoor
blower section and outdoor section before making any
electrical connections or servicing the system. More
than one disconnect switch may be required to de-
energize the equipment. Hazardous voltage can cause
severe personal injury or death.
Manufactured By
Allied Air Enterprises LLC
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
0650329-56 / 506265-03
INSTALLATION INSTRUCTIONS
EFV Electric Furnace
This manual must be left with the homeowner for future reference.
WARNING
adjustment,
service,
WARNING
WARNING
Save these instructions for future reference
Warm Air Unit
Installation ...................................................................2
or
Condensate Drain Connection ....................................4
Electrical Wiring ...........................................................5
Setup ...........................................................................6
Sequence of Operation................................................8
System Check .............................................................9
Replacement Parts ....................................................10
Maintenance ..............................................................10
Airflow Configurations................................................11
Inspection of Shipment
Upon receipt of equipment, carefully inspect it for possible
shipping damage. If damage is found, it should be noted
on the carrier's freight bill. Take special care to examine
the unit inside the carton if the carton is damaged. Any
concealed damage discovered should be reported to the
last carrier immediately, preferably in writing, and should
include a request for inspection by the carrier's agent.
If any damages are discovered and reported to the carrier
DO NOT INSTALL THE UNIT, as claim may be denied.
Check the unit rating plate to confirm specifications are as
ordered.
Issue 1924

Table of Contents

*P506265-03*
(P) 506265-03
Page 1 of 13

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Summary of Contents for Lennox Allied Air EFV Series

  • Page 1: Table Of Contents

    Hazardous voltage can cause severe personal injury or death. Manufactured By *P506265-03* Allied Air Enterprises LLC A Lennox International, Inc. Company 215 Metropolitan Drive (P) 506265-03 West Columbia, SC 29170 Save these instructions for future reference 0650329-56 / 506265-03...
  • Page 2: Installation

    These electric furnaces are completely factory assembled Installation and all components are performance tested. Each unit consists of a blower assembly, optional refrigerant coil, and controls, in an insulated galvanized factory finished This EF electric furnace is designed for ease of installation enclosure, and may also include electric heat as specified.
  • Page 3 Maintain all required clearances to combustible surfaces Supply plenum should be the same size as the flanged as stated on the unit rating plate. opening provided around the blower outlet and should be installed as recommended in ASHRAE or ACCA Manual D. Supply and return ductwork must be adequately sized to meet the system’s air requirements and static pressure The plenum forms an extension of the blower housing and...
  • Page 4: Condensate Drain Connection

    • Auxiliary drain (if used) should be run to a place Condensate Drain Connection where it would be noticeable if it becomes operational. Occupant should be warned that a problem exists if Do not operate unit without a drain trap. The condensate water should begin running from the auxiliary drain drain is on the negative pressure side of the blower;...
  • Page 5: Electrical Wiring

    Electrical Wiring IMPORTANT The variable speed motor in the EFV electric furnace contains DC filter capacitors that will cause a surge or WARNING inrush of current when power is applied. Power is to Turn off electric power at the fuse box or service panel remain applied to the motor except during servicing.
  • Page 6: Setup

    This model is designed for use with heat pumps as Setup well as air conditioning systems. The motor control board needs to sense a signal on the “O” thermostat For proper system operation, the airflow through the indoor wire in order to use cooling delay timing. For a straight air conditioning system, connect the “O”...
  • Page 7 Control Board Taps Thermostat Cool Heat Model Mode Cont. Blower Cooling 1000 EFV08BCP Heating 1000 Aux. Heat 1000 Emer. Heat 1000 Cont. Blower Cooling 1200 1000 EFV12BCP Heating 1200 1000 Aux. Heat 1200 1100* 1100* 1100* Emer. Heat 1200 1100* 1100* 1100* Cont.
  • Page 8: Sequence Of Operation

    Heating (heat pump) Sequence of Operation When the thermostat calls for heat, the circuits between R and Y and R and G are completed. Circuit R-Y energizes the contactor starting the outdoor fan motor and the Cooling (cooling only or heat pump) compressor.
  • Page 9: System Check

    Airflow System Check For proper system operation, the airflow through the indoor coil should be between 350 – 450 CFM per ton of cooling capacity. Each electric furnace is shipped configured Pre-start Check to provide the correct airflow for the maximum tonnage •...
  • Page 10: Replacement Parts

    Replacement Parts Maintenance Use only original equipment service parts when repairing Air Filters these products. These parts include but are not limited to: circuit breakers, heater controls, heater limit controls, heater elements, motor, blower relay, control transformer, IMPORTANT blower wheel, indoor coil, and sheet metal parts. Do not operate system without a filter.
  • Page 11: Airflow Configurations

    Airflow Configurations Counterflow Upflow Left to Right Airflow Right to Left Airflow Horizontal Figure 3. Airflow Configurations 0650329-56 / 506265-03 Issue 1924 Page 11 of 13...
  • Page 12 Figure 4. Wiring Diagram Variable Speed Blower Page 12 of 13 Issue 1924 0650329-56 / 506265-03...
  • Page 13 Heat Pump with Electric Heat Electric Thermostat Furnace Heat Pump Only for 2-Stage Electric Heat Y/Y2 2-Stage System only; for single-stage systems, jumper Y1 to Y2 Air Conditioning with or without Electric Heat Electric Connect O to R for proper Thermostat Furnace cooling blower delay...

Table of Contents