Lennox 16B27, Manuallines

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©
2017 Lennox Industries Inc.
Dallas, Texas, USA
CONTROLS
KITS AND ACCESSORIES
506461-03
11/2017
Supersedes 506461-02
AIR HANDLER CONTROL FIELD
REPLACEMENT KIT
Guidelines for Air Handler Control Field Replacement (16B27)
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
WARNING
Electric Shock Hazard! – Disconnect all
power supplies before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
WARNING
ELECTROSTATIC
DISCHARGE
(ESD)
Precautions and
Procedures
Electrostatic discharge can affect
electronic components. Take care
during unit installation and service to
protect the unit’s electronic controls.
Precautions will help to avoid control
exposure to electrostatic discharge
by putting the unit, the control and the
technician at the same electrostatic
potential. Touch hand and all tools
on an unpainted unit surface before
performing any service procedure to
neutralize electrostatic charge.
Table of Contents
Shipping and Packing List ..............................2
General .............................................................2
Air Handler Control Removal and
Installation ........................................................2
For All Applications ............................................................ 2
For Non-Communicating Applications Only ....................... 2
Field Control Wiring ........................................5
Control and Sensor Connection Requirements ................. 7
Discharge Sensor (DAT) .................................................... 7
Outdoor Air Sensor (OAS) ................................................. 7
Indoor Blower Signal 6-Pin Connector (P7)....................... 7
Air Handler Control 9-Pin Connector (P8) ......................... 7
Air Handler Control Button and Display ........8
Push Button ....................................................................... 8
Seven-Segment Display .................................................... 8
Air Handler Jumpers .....................................11
Delay Profile 1 ................................................................ 12
Delay Profile 2 ................................................................. 12
Delay Profile 3 ................................................................. 12
Delay Profile 4 ................................................................. 12
Seven-Segment Display .................................................. 12
Target CFM Tables .........................................13
Unit Operating Sequences ............................17
Configuring Unit ............................................19
Checkout ......................................................................... 19
Unit Size Code................................................................. 20
Electric Heat ....................................................................
21
EvenHeat Operation ........................................................ 22