Lennox Harmony III Manual

Harmony III Zoning System / Page 2
FEATURES
ZONE CONTROL PANEL (continued)
Low Voltage Control Terminals
• Four zone thermostats (W, C, Y, G, R)
• Discharge air sensor
• Balance point sensor
• Pressure switch (heat pump systems only)
• Setup Jumpers
• HEATING STAGE TEMP (85, 90, 100, 110, 120, 130)
• COOLING STAGE TEMP (50, 55, 60)
• CONT. AIR REDUCTION (0%, 25%, 50%, 75%)
• HEATING AIR REDUCTION (0%, 20%, 40%)
• ZONE 1, 2, 3, 4 PIAB (0 to 100%)
• SYSTEM CONFIGURATION (HP, GAS, 2COOL,
1COOL, 2HP, 1HP)
• E-HEAT STAGES (DF, 1, 2, 3)
Display LED’s
• Damper 1, 2, 3, 4 (LED’s lit when zone dampers are
closed)
• E-Heat Mode (LED lit in emergency heat mode)
• Central Mode (LED lit in vacation mode)
• Fan On (LED lit when fan is operating)
• Cooling (LED lit when cooling equipment is operating)
• Heating (LED lit when heating equipment is
operating)
• Electric Heating (LED lit when electric heat is operating)
• Status (power, ashing)
Additional Control Board LED’s
• Y1, Y2, O, W1 Def., W1, W2, W3 (LED’s lit showing
heating/cooling equipment operation)
• Thermostat LEDs: one set for each zone, green -
cooling call, red - heating call, and amber - blower
call
Timer Delay Override Button (TDO)
• Speeds up onboard timer by a factor of 60 for system
checkout.
ZONE CONTROL PANEL JUMPER SETTINGS
See Installation Instructions for detailed information on
conguration.
Heating Staging Temperature Jumper
Used to set the discharge air temperature that will be
maintained by staging the equipment.
Selectable between 85°F and 140°F with a built-in
differential of 20°F.
Recommended settings: 90°F for heat pumps, and
110°F for gas furnaces.
In heat pump applications, the electric heat will be
staged to maintain the discharge air temperature set by
the heating stage jumper position.
Cooling Staging Temperature Jumper
Used to set the discharge air temperature that will be
maintained by staging the equipment.
Selectable between 50°, 55°, and 60°F. with a built-in
differential of 7°F.
Continuous Air Reduction
During continuous fan mode with no heating or cooling
demand, the blower runs at the CFM calculated from
the jumper settings of the zones calling for continuous
fan and is reduced by the percentage selected on this
bank of jumpers.
Selections are 0%, 25%, 50% and 75%.
Heating Air Reduction
The heating air reduction jumper enables the blower
speed, during heating, to be reduced by a percentage of
the cooling blower speed.
Selections are 0%, 20% and 40%.
Heat pump applications, always set the jumper on 0%.
High head pressures may result if air is reduced during
heating mode.
Zone PIAB (Percent Into Adjustment Band)
The adjustment band is the difference between the
minimum and maximum CFM rating of the air handler.
Setting allows an appropriate percentage of air volume
to each zone. Volume settings must be selected for
zone 1 and at least one other zone.
Selections are: 0 to 100% in increments of 10%. See
Installation Instructions for more information.
System Conguration
Selects the type of cooling and heating system that has
been installed.
Select the number of equipment stages by placing the
jumper to the appropriate side (HP or GAS, 1COOL or
2COOL, and 1HP or 2HP).
E-Heat Stages
Selects number of electric heat stages that are
available.
Jumper must be set to DF for dual fuel operation.
Selections are DF, 1, 2, and 3.

Lennox Harmony III Specifications

General

Brand	Lennox
Model	Harmony III
Category	Control Systems
Language	English