Lennox Harmony III User Manual

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5.3.6. Installation Setup Worksheets
5.3.6.1. DualFuel-IndoorUnitHoneywell2-StageIFCControlandHeat
Pump
Job Name:
Indoor Unit Model:
Outdoor Unit Model:
Miscellaneous Items:
9 Install Pressure Switch in the outdoor unit per this instructions (27W13 for R410A or 21J18 for
R22)
9 Install Balance Point Sensor (10Z23) as per this installation instruction. Set to desired outdoor
lock out temperature for HP
9 Install Optional Defrost Tempering Sensor 67M41 (if used) per installation instructions. NOTE:
MUST be located in coil delta plate between furnace and coil
9 Install Discharge Air Sensor per installation instructions. The location of the sensor is CRITICAL
for proper system operation
Indoor Unit Setup:
9 Cut on-board link W914 DEHUM OR HARMONY (R to DS) on furnace IFC control (if not cut,
fuse will blow in zone control board)
9 Cut and tape wires from pin # 2 and pin #13 on plug J46 of the VSM wiring harness routed from
the motor to the Furnace Integrated control.
9 Furnace IFC Control DIP switch settings (ON or OFF):
DIPSwitch ON or OFF Condition
1 OFF
DIP switch 1 must be set to OFF for two stage heating
operation
2 OFF
DIP switch 2 determines second stage heat time delay
and is ignored by Harmony III zoning system
3 ON
DIP switches 3 and 4 determines heating blower off
delay, recommended is 180 sec
4 ON
5
DIP switches 5 and 6 determines second stage cooling
blower speed or maximum system air vol.
6
7
DIP switches 7 and 8 determine blower “adjust” setting
for maximum system air volume
8
9 OFF DIP switches 9 and 10 determines cooling blower
rampingproleandisignoredbyHarmonyIIIzoning
system
10 OFF
11 OFF
DIP switches 11 and 12 determines heating blower
speed and is ignored by Harmony III zoning system
12 ON
Panel Setup:
√Heatingstagingjumper Circle one: 85 90 100
110 120 130
Recommended 120 deg-F
√Zone1PIAB140FDAS
jumper in place
Circle one: Yes No See “1.10.4. Zone 1 PIAB Jumpers –
140ºF DAS” on page 10.
√Coolingstagingjumper Circle one: 50 55 60 Select desired discharge air temp
during cooling
√Cont.AirReductionjumper Circle one: 0 25 50
75
Percentageairowreductionfor
continuous fan operation
√HeatingAirReductionjumper Circle one: 0 20 40 Percentageairowreductionfor
heating mode
√SystemConguration
jumpers
Circle one: HP GAS Set to GAS
√Stages Circle one: 2COOL
1COOL
Set to match condenser, 1 or 2 stage
√Stages Circle one: 2HP 1HP Ignored for gas heat, non-heat pump
application
√E-HEATStages Circle one: DF 1 2 3 Ignored for gas heat, non-heat pump
application
√DesiredtotalsystemCFM
with all zones calling:
Total system CFM per
tables:
Minimum CFM:
√Zone1 Name: Desired CFM: PIAB Setting: Actual CFM:
√Zone2 Name: Desired CFM: PIAB Setting: Actual CFM:
√Zone3 Name: Desired CFM: PIAB Setting: Actual CFM:
√Zone4 Name: Desired CFM: PIAB Setting: Actual CFM:
NOTE: All of the above are recommended starting positions for furnace DIP switches and Harmony
III jumpers. Slight variations may be required during system start up and operation checks.
Field Wiring Checklist
√ Indoor Unit Wiring Completed:
DS on Harmony III to DS on indoor unit connected
C on indoor unit connected to Harmony III transformer C
No connection to Y1 or Y2 on indoor unit.
√ Outdoor Unit Wiring Completed
√ Thermostat and Damper Wiring Completed
√ Discharge Sensor wired to Harmony III zoning system
√ Heat Pump Pressure Switch wired to Harmony III zoning system

Lennox Harmony III Specifications

General

Brand	Lennox
Model	Harmony III
Category	Control Systems
Language	English