Lennox Harmony III User Manual

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furnace looks at air volume and determines proper ring rate based on DIP
switch 14-19 settings. See SLP98 Installation Instructions for adjustment
options.
3.3.2. Integrated Furnace Control W2 terminal to Harmony III
zoning system Control
SincethefurnaceautomaticallyadjustsringratetomatchCFMtoachieveatarget
temperature rise, connection of Harmony III zoning system control to W2 terminal
on the integrated control is not required.
With W2connected,lowerringratescanbeusedforW1 demand usually resulting
in greater comfort levels per zone. If temperature cannot be maintained, then W2
willquicklyincreaseringratestosatisfydemand.
If discharge air temperature is too low, the integrated control W2 can be connected
toHarmonyIIIzoningsystemcontroltocausethefurnacetoincreaseringrate.
Every two minutes, the integrated control looks at W2. If W2isON,theringrate
increasesby5%.This5%increaseisaddedtothedesiredringrateasdetermined
bythePWM.Therefore,ifa50%dutycyclecorrespondstoa70%ringrate,after
2 minutes of W2,thatsame50%dutycyclewillcorrespondtoa75%ringrate.
This will last for the remainder of the heat cycle.
When W2goesfromONtoOFF,theintegratedcontroldecreasestheringrate
by 5%.
3.3.3. Installation Setup Worksheets
3.3.3.1. SLP98V — Cooling/Heating (Non-Heat Pump Applications)
Job Name:
Indoor Unit Model:
Outdoor Unit Model:
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 zoning system control board)
√W2connectionfromHarmonyIIIzoningsystemtoSLP98isoptional–seeHarmonyIIIzoning
system / furnace installation instructions for details
√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 zoning system
2 OFF
DIP switch 2 – leave at factory setting – ignored by Harmony
III zoning system
3 OFF
DIP switch 3 – leave at factory setting – ignored by Harmony
III zoning system
4 ON
DIP switches 4 and 5 determine heating blower “off” delay –
recommended 180 seconds
5 ON
Job Name:
Indoor Unit Model:
Outdoor Unit Model:
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 zoning system control board)
√W2connectionfromHarmonyIIIzoningsystemtoSLP98isoptional–seeHarmonyIIIzoning
system / furnace installation instructions for details
√DIPswitchsettings(ONorOFF):
6 OFF
DIP switches 6 and 7 – leave at factory setting – ignored by
Harmony III zoning system
7 OFF
8
DIP switches 8 and 9 – cooling blower speed – determines
maximum system CFM – see G71MPP blower tables)
9
10
DIP switches 10 and 11–cooling blower adjust–determines
maximum system CFM – see G71MPP blower tables
11
12 OFF
DIP switches 12 and 13 – leave at factory setting – ignored
by Harmony III zoning system
13 OFF
14 OFF DIPswitches14,15,and16–setslowre,minimumcapacity,
ringrate-DEFAULTSETTINGSHOWNandIS
RECOMMENDED STARTING POINT– see Harmony III
zoning system/furnace install instruction
15 OFF
16 OFF
17 OFF
DIPswitches17,18and19–setshighre,100%
capacity,ringrate-DEFAULTSETTINGSHOWNandIS
RECOMMENDED STARTING POINT– see Harmony III
zoning system/furnace install instruction
18 OFF
19 OFF

Lennox Harmony III Specifications

General

Brand	Lennox
Model	Harmony III
Category	Control Systems
Language	English