Lennox Harmony III Installation Instructions

DUAL FUEL
Page 53
HARMONY IIIT ZONE CONTROL SYSTEM
Harmony IIIt Installation Setup Worksheets (continued)
G71MPP, SLP98, SL280V, EL296VDual Fuel (Heat Pump Applications)
Job Name: Indoor Unit Model: Outdoor Unit Model:
Miscellaneous Items:
- Install Pressure Switch in the outdoor unit per Harmony III installation instructions (27W13 for R410A or 21J18 for R22)
- Install Balance Point Sensor (56A87) as per installation instructions. Set to desired outdoor lock out temperature for HP
- Install Optional Defrost Tempering Sensor 67M41 (if used) per installation instructions. NOTE: MUST be located in coil delta plate between furnace and
coil
- 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)
- W2 connection from Harmony III to SLP98 or G71MPP is optional – see Harmony III / furnace installation instructions for details
- DIP switch settings (ON or OFF):
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 OFF (DIP switch 3 – leave at factory setting – ignored by Harmony III)
4 ON (DIP switches 4 & 5 determine heating blower off" delay – recommended 180 seconds)
5 ON I
6 OFF (DIP switches 6 & 7 – continuous indoor blower speed – ignored by Harmony III)
7 OFF I
8 (DIP switches 8 & 9 – cooling blower speed – determines maximum system cfm – see furnace blower tables)
9 I
10 (DIP switches 10 & 11–cooling blower adjust–determines maximum system cfm – see furnace blower tables)
11 I
12 OFF (DIP switches 12 & 13 – cooling mode blower ramping – ignored by Harmony III)
13 OFF I
14 OFF (DIP switches 14,15,&16 – sets low fire, minimum capacity, firing rate − DEFAULT SETTING SHOWN & IS
RECOMMNEDED STARTING POINT– see Harmony III/furnace install instruction)
15 OFF I
16 OFF I
17 OFF (DIP switches 17,18,&19 – sets high fire, 100% capacity, firing rate − DEFAULT SETTING SHOWN & IS
RECOMMNEDED STARTING POINT– see Harmony III/furnace install instruction)
18 OFF I
19 OFF I
Harmony IIIt Panel setup:
- Heating staging jumper (circle one): 85 90 100 110 120 130 (Recommended 90 deg−F)
- Zone 1 PIAB 140F DAS jumper in place (circle one): Yes No (see Harmony III install instructions for info)
- Cooling staging jumper (circle one): 50 55 60 (select desired discharge air temp during cooling – Recommended 50 deg−F)
- Cont. Air Reduction jumper (circle one): 0 25 50 75 (% airflow reduction for continuous fan operation)
- Heating Air Reduction jumper (circle one): 0 20 40 (Must be set to 0 for heat pump applications)
- System Configuration jumpers (circle one): HP GAS (Set to HP)
- Stages (circle one): 2COOL 1COOL (Set to match type of heat pump, 1 or 2 stage compressor)
- Stages (circle one): 2HP 1HP (Set to match type of heat pump, 1 or 2 stage compressor)
- E−HEAT Stages (circle one): DF 1 2 3 (Must be set to DF for dual fuel 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 the SLP98 or G71MPP 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.
- Heat Pump Pressure Switch wired to Harmony III.

Lennox Harmony III Specifications

General

Brand	Lennox
Model	Harmony III
Category	Control Systems
Language	English