Lennox Harmony III User Manual

58
5.3.6.3. Dual Fuel - Variable Speed SL280V, EL296V, SL297NV and Heat
Pump
Job Name:
Indoor Unit Model:
Outdoor Unit Model:
Miscellaneous Items:
9 Install Pressure Switch in the outdoor unit per Harmony III installation instructions (27W13 for
R410A or 27W12 for R22)
9 Install Balance Point Sensor (10Z23) as per installation instructions. 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:
√Cuton-boardlinkW914DEHUMORHARMONY(R to DS) on furnace IFC control (if not cut, fuse
will blow in Harmony III zone control board)
√DIPswitchsettings(ONorOFF):
DIP
Switch
ON or OFF Condition
1 OFF DIP switch 1 – leave at factory setting – ignored by Harmony III
2 OFF DIP switch 2 – leave at factory setting – ignored by Harmony III
3 ON
DIP switches 3 and 4 – Blower off delay switch settings, set DIP
switches 3 and 4 to ON (180 seconds)
4 ON
DIP switches 4 and 5 – Determines heating blower “off” delay –
recommended 180 seconds
5 OFF
DIP switches 5 and 6 – Cooling bode blower speed, set DIP switches
5 and 6 to OFF (High - Factory)
6 OFF
7 OFF
DIP Switches 7 and 8 – Cooling blower speed adjustment, set DIP
switches 7 and 8 to OFF (Factory Default)
8 OFF
9 OFF
DIP Switches 9 and 10 – Cooling mode blower Speed ramping, set
DIP switches 9 and 10 to OFF (A - Factory)
10 OFF
11 OFF
DIP Switches 11, 12 and 13 – Heating mode blower speed, set DIP
switches 11, 12 and 13 to OFF (Factory Default)
12 OFF
13 OFF
14 OFF
DIP Switches 14 and 15 – Continuous blower speed, set DIP switches
14 and 15 to OFF (38% of High Cool Speed - Factory Default)
15 OFF
Panel Setup:
9 Heating staging jumper Circle one: 85 90 100 110
120 130
Recommended 120 deg-F
9 Zone 1 PIAB 140F DAS
jumper in place
Circle one: Yes No See Harmony III install
instructions for info
9 Cooling staging jumper Circle one: 50 55 60 Select desired discharge air
temp during cooling
9 Cont. Air Reduction jumper Circle one: 0 25 50 75 Percentageairowreduction
for continuous fan operation
9 Heating Air Reduction
jumper
Circle one: 0 20 40 Percentageairowreduction
for heating mode
9 SystemConguration
jumpers
Circle one: HP GAS Set to GAS
9 Stages Circle one: 2COOL 1COOL Set to match condenser, 1 or
2 stage
9 Stages Circle one: 2HP 1HP Ignored for gas heat, non-heat
pump application
9 E-HEAT Stages Circle one: DF 1 2 3 Ignored for gas heat, non-heat
pump application
9 Desired total system CFM
with all zones calling:
Total system CFM per tables: Minimum CFM:
9 Zone 1 Name: Desired CFM: PIAB Setting: Actual CFM:
9 Zone 2 Name: Desired CFM: PIAB Setting: Actual CFM:
9 Zone 3 Name: Desired CFM: PIAB Setting: Actual CFM:
9 Zone 4 Name: Desired CFM: PIAB Setting: Actual CFM:
NOTE: All of the above are recommended “starting” positions for the 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

Lennox Harmony III Specifications

General

Brand	Lennox
Model	Harmony III
Category	Control Systems
Language	English