Lennox International Inc Marine Sanitation System Harmony III User Manual

HOMEOWNER’S  
MANUAL  
E2006 Lennox Industries Inc.  
Dallas, Texas, USA  
Harmony IIIt Zone Control  
System  
CONTROLS  
505,024M  
05/06  
Litho U.S.A.  
Supersedes 01/06  
IMPORTANT: Read this instruction manual  
completely! Retain for future reference.  
Contents  
Page  
What Is the Harmony IIIt Zone Control System? . .  
What does the system consist of? . . . . . . . . . . . . . . .  
How do I set the control center switches? . . . . . . . . .  
How do I use the thermostat controls? . . . . . . . . . . .  
What does the service light indicate? . . . . . . . . . . . . .  
How do I use the central (Vacation) mode? . . . . . . .  
How do I use the zone mode? . . . . . . . . . . . . . . . . . . .  
How are zones determined? . . . . . . . . . . . . . . . . . . . .  
Thermostat replacement and maintenance . . . . . . . .  
Homeowner’s Zone Information Record . . . . . . . . . .  
05/06  
505,024M  
*2P0506*  
*P505024M*  
 
2. Emergency Heat switchꢁWhen the Harmony IIIt  
control center is used with a heat pump and the Emer-  
gency Heat switch is turned ON, the unit will satisfy all  
heating demands with electric backup heat. When the  
Emergency Heat switch is OFF, the heat pump is used  
to satisfy heating demands. (This switch has no effect  
on operation in a non-heat pump system, for example,  
Option 1, described on page 2.)  
NOTE − Usually, Emergency Heat is more expensive  
to operate than Heat Pump heating. If so equipped,  
use Emergency Heat only when necessary.  
To turn off the system, either: A − Turn each thermostat to  
OFF, or B − Turn the master thermostat OFF and turn the  
control center to central (Vacation ON) mode.  
Damper LEDs come on to indicate  
the damper to zone # is CLOSED  
(No air being permitted to LIT zone)  
Vacation OFF for individual zone control.  
ON indicates only Zone 1  
thermostat is functional and  
controlling air to ALL zones.  
Vacation ON for all zones to be conditioned  
at the same time.  
Comes on when  
Emergency Heat  
switch set to ON  
Emergency Heat OFF to allow Heat Pump  
to provide heat.  
Emergency Heat ON to force auxiliary  
(backup) heat to provide all heating  
(disallows heat pump from providing any  
heat).  
LEDs come on to indicate the current operating mode  
Page 3  
 
How do I use the thermostat controls?  
What does the service light indicate?  
On heat pump systems only, the service light, located on  
the master thermostat, indicates that the outdoor unit re-  
quires service. The service lights on zone 2, 3 and 4 ther-  
mostats are not functional. Call your Lennox service tech-  
nician if the service light on the zone 1 thermostat is lit.  
Whether in central mode (where only zone 1 thermostat is  
functional) or in the zone mode (where all thermostats are  
functional), thermostats function as in a traditional, non−  
zoned, system. That is:  
S
S
S
HEAT setting tells the control center that it should pro-  
vide heat to the zone(s) when it is needed.  
How do I use the central (Vacation) mode?  
When you choose central (Vacation ON) mode, heating  
and cooling will affect all zones.  
COOL setting tells the control center to provide cool air  
to the zone(s) when there is a need.  
1. Move the Vacation switch on the control center to ON.  
2. Choose either HEAT or COOL or AUTO on the master  
(zone 1) thermostat.  
AUTO setting allows either heating or cooling to occur,  
depending on the need. This selection is best in spring  
or autumn, when the temperature is cool in the morn-  
ing but still warms in the afternoon. By placing the ther-  
mostats in AUTO, heating would come on in the morn-  
ing and cooling in the afternoon, if needed.  
3. Choose either FAN AUTO or FAN ON on the master  
thermostat.  
4. Set master thermostat to desired room temperature.  
How do I use the zone mode?  
When you choose zone (Vacation OFF) mode, heating  
and cooling is controlled by specific zone thermostats.  
1. Move the Vacation switch on the control center to OFF.  
S
FAN AUTO or FAN ON tells the control center how the  
blower should operate. Select one or the other. FAN  
AUTO allows the blower to turn on and turn off with the  
heating or cooling needs. FAN ON tells the blower to  
run continuously. Zone-controlled dampers in the sys-  
tem make it possible to have some zones call for con-  
tinuous fan (FAN ON) while other zones are set to FAN  
AUTO.  
2. Choose either HEAT or COOL or AUTO on each ther-  
mostat (thermostats need not be set alike).  
3. Choose either FAN AUTO or FAN ON on each thermo-  
stat (these may be set differently in each zone).  
4. Set thermostats to desired room temperature.  
Page 4  
 
 
time are zoned together. Bedrooms which are general-  
ly used at night, should not zoned with a living room  
that is used only during the day or evening.  
How are zones determined?  
Your Lennox dealer has sectioned the rooms of your home  
or building into zones using the following considerations:  
1. Structural and Architectural ConsiderationsꢁIn multi-  
level houses using regular HVAC systems, heated air  
rises to the upper floor(s) causing those rooms be-  
come too hot. Zoning will remedy this situation by split-  
ting the conditioned space into two specific zones (first  
and second floors). The second floor temperature is  
now controlled by its own thermostat, not that of the  
first floor.  
OWNER REMINDER! Be sure the system installer has re-  
corded the zoning information in Table 1 on page 6 and  
has identified a contact person and phone number in case  
of problems.  
Thermostat replacement  
In the event a thermostat should fail and require replace-  
ment, be aware that not all thermostats will work for all sys-  
tems. Certain types of thermostats, known as power-rob-  
bing thermostats, have no ꢀC" (common) wire connection  
terminal; these can cause unintended system operation  
and therefore must not be used. Call your Lennox dealer to  
help you identify and install an appropriate thermostat with  
a ꢀC" terminal.  
2. Climate ConsiderationsꢁExposure from the sun and  
weather can produce cold and hot spots in homes that  
are conditioned with the use of one thermostat. Zoning  
lessens this by grouping rooms with the same expo-  
sure into one zone. Therefore, a room with a northern  
exposure and a room with a southern exposure should  
not be zoned together. In the winter, the northern room  
may be too cool while the southern room may be too  
hot. In order to keep a balance of conditioned air, the  
zone must contain rooms with the same weather expo-  
sure.  
Maintenance  
Once your Lennox Harmony IIIt Zone Control System is  
properly installed, no maintenance is required for the con-  
trol panel’s components. Only standard heating and cool-  
ing equipment (HVAC) maintenance is required.  
3. Occupancy ConsiderationsꢁA single structure con-  
tains different types of living spaces. Without zoning,  
it is difficult to condition all areas so that everyone will  
be comfortable. Zoning a home or office allows the  
owner to control the zones which need to be condi-  
tioned. Rooms that are used or occupied at the same  
If you experience problems turning the system on to either  
heat or cool, the problem may simply be a programmed  
time delay, which, in most cases, would expire within 5 to  
20 minutes. Such delays are normal and are built-in to as-  
sure proper equipment operation.  
Page 5  
 
 
Table 1. Homeowner’s Zone Information Record  
Zone number Record which rooms are zoned together and controlled by thermostat #  
1
2
3
4
Lennox Dealer:  
Contact:  
Telephone Number:  
Installation Date:  
Page 6  
 
 

Lanier Printer LP 036c User Manual
Lasko Fan 5566 User Manual
Leica Camera Accessories BP DC1 User Manual
Lochinvar Boiler CB CW 495 745 User Manual
Logitech Video Game Controller 941000020 User Manual
Magnat Audio TV Cables Neo Flex 130 User Manual
Marantz Music Pedal RC2001 User Manual
Maytag Trash Compactor MTUC7000AWS User Manual
Maytag Washer 40136001 User Manual
McCulloch Lawn Mower 96141014103 User Manual