Honeywell Heat Pump TZ 3 User Manual

TZ-3 TotalZone® Zone Control Panel  
PRODUCT DATA  
FEATURES  
Up to three stages heat and two stages cooling can be  
controlled by thermostat or built-in timer, based on the  
number of zones calling.  
Controls up to three zones and can be expanded with  
TotalZone Add-A-Zone zone Control Panel for up to 30  
zones.  
Uses virtually any Honeywell four-wire, single-stage,  
multi-stage, or Trol-A-Temp heat pump thermostat.  
Zone-A-Lone central setback feature.  
Purge timer protects equipment between calls for heat  
or cool with choice of continually on or equipment  
controlled fan.  
System and zone damper LEDs indicate system and  
damper status.  
Individual zone fan control.  
Optional Discharge Air Temperature Sensor for  
capacity control with adjustable high and low limits.  
Thermal circuit breaker protects panel and transformer  
from damage if miswired.  
APPLICATION  
The TZ-3 TotalZone Zone Control Panel controls single-stage,  
multi-stage, conventional or heat pump heat/cool equipment.  
It controls 2 or 3 zones, and is expandable up to 30 zones with  
optional TotalZone® Add-A-Zone™ Zone Control Panel.  
For technical support, call 1-800-TAT-Temp (1-800-828-8367).  
Contents  
Application.........................................................................1  
Features ............................................................................1  
Specifications ....................................................................2  
Installation .........................................................................4  
Startup and Checkout........................................................9  
Operation...........................................................................10  
Troubleshooting.................................................................13  
® U.S. Registered Trademark  
Copyright © 2001 Honeywell • All Rights Reserved  
68- 0223-2  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
Table 2. Recommended Dampers.  
Round  
Honeywell Damper Type  
Power-open/power-closed  
Rectangular  
MARD  
IOBD  
AOBD  
AOBD-BM  
CDO-51  
Spring-open/power-closed  
ARD  
ZDB  
ZDS  
Table 3. Required Accessories (Not Supplied With Panel).  
Description  
Bypass Rating  
(cfm)  
Accessory  
40 VA transformer  
AT140D1046 (PMT-40)  
Capacity protector  
ZMS, DATS (C7735A1000)  
Round static pressure regulator  
damper  
7 SPRD  
8 SPRD  
9 SPRD  
10 SPRD  
12 SPRD  
14 SPRD  
16 SPRD  
18 SPRD  
300  
400  
600  
750  
1200  
1800  
2400  
3200  
Rectangular static pressure regulator  
damper  
12 x 8 SPRD  
12 x 10 SPRD  
12 x 12 SPRD  
20 x 8 SPRD  
20 x 10 SPRD  
20 x 12 SPRD  
1000  
1200  
1400  
1600  
2000  
3000  
3
68-0223-2  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
INSTALLATION  
Mounting  
CAUTION  
Do not mount TZ-3 inside HVAC equipment  
RETURN  
AIR  
Equipment Damage Hazard.  
Mount only on wall or on cold air return  
T2-3  
OPTIONAL  
LOCATION  
1.  
Mount the thermostats in each zone of the living space  
using the installation instructions provided with each  
thermostat.  
T2-3  
EL  
EC  
TR  
ON  
IC  
AI  
R
CL  
EA  
NE  
R
2.  
3.  
4.  
Mount the dampers in the ductwork using the installa-  
tion instructions provided with each damper.  
Mount the TZ-3 zone panel near the HVAC equipment;  
locate it on a wall or on the cold-air return. See Fig. 2.  
Level the TZ-3 for appearance only.  
WATER  
HEATER  
FURNACE  
OR BOILER  
HIGH  
EFFICIENCY  
AIR CLEANER  
M19063  
Wiring  
Fig. 2. TZ-3 mounting location.  
Wiring Diagrams (Fig. 3-17)  
CAUTION  
Can cause electrical shock or equipment damage.  
Disconnect power before continuing installation.  
Voltage Hazard.  
Conventional Thermostats  
The C (common) terminal is used only on thermostats that  
require a common (for example:T8601). See Fig. 3. Wire the  
W2 terminal on a multi-stage thermostat (for example: T8624)  
to the W2 on the panel for second stage control from the  
thermostat. If the thermostat has a Y2 terminal, do not  
connect it to the panel.  
Wiring must comply with applicable codes, ordinances, and  
regulations.  
1.  
2.  
3.  
Connect thermostats as shown in Fig. 3-5.  
Connect dampers as shown in Fig. 6-10.  
Connect the Discharge Air Temperature Sensor (not  
supplied) to the TL terminals.The wires are not polar-  
ized. See Fig.12.  
ZONE CONNECTIONS ON PANEL  
4.  
Connect Add-A-Zone panels (if used) to the AZ1 and  
AZ2 terminals. The AZ1 terminal on the TZ-3 must be  
wired to the AZ1 terminal on the TAZ panel. Similarly,  
the AZ2 terminal must be wired on the TZ-3 to the AZ2  
on the TAZ. See Fig. 13.  
THERMOSTAT  
G Y R  
MOTOR  
M6 M4 M1  
W2  
L
W
5.  
6.  
Connect the HVAC equipment to the EQUIP terminals  
on the panel. See Fig. 14-17.  
Connect a 40 VA, 24 volt transformer to TR1 (hot) and  
TR2 (common). This must be a dedicated transformer  
and any additional TAZ boards also each require a  
transformer. See Fig. 11.  
G
Y
R
W
C
ZONE THERMOSTAT  
M19064  
Fig. 3. Typical single-stage thermostat wiring.  
Heat Pump Thermostats  
Select a heat pump thermostat from Table 1. If the thermostat  
selected has a separate Y1 and W1, see Fig. 4. When using  
the thermostat to control the second stage of heat (W2), set  
DIP switch 5 to On, and DIP switch 1 to Off. Set both DIP  
switches 6 and 7 to Off.  
68-0223-2  
4
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
ZONE CONNECTIONS ON PANEL  
MOTOR TERMINALS  
M6 M4 M1  
THERMOSTAT  
MOTOR  
W2  
L
G
Y
R
W
M6 M4 M1  
4
1
5
2
6
3
Z
X
FIELD JUMPER  
E
W2  
L
G
Y1  
R
W1 C/X  
ZONE THERMOSTAT  
M19065  
M19067  
DAMPER MOTOR  
Fig. 4. Heat pump thermostat with separate Y1 and W1  
terminals and multi-stage thermostat wiring.  
Fig. 6. AOBD single damper wiring.  
If the thermostat selected has a single Y terminal, see Fig. 5.  
Select a single Y thermostat for each zone. See Table 1.  
MOTOR TERMINALS  
M6 M4 M1  
FIELD JUMPER  
Set DIP switch 6 or 7 (not both) to the On position. Set switch  
6 to On when B on the thermostat is wired to W on the panel.  
Set switch 7 to On when 0 on the thermostat is wired to W on  
the panel.  
4
1
5
2
6
3
Z
X
4
1
5
2
6
3
Z
X
When using the zone thermostat to control the second stage  
of heat (W2), set DIP switch 5 to On, and DIP switch 1 to Off.  
DAMPER MOTORS  
ZONE CONNECTIONS ON PANEL  
M19068  
THERMOSTAT  
G Y R  
MOTOR  
M6 M4 M1  
W2  
L
W
Fig. 7. AOBD multiple damper wiring.  
ARD or ZD Dampers  
Wire the ARD or ZD Damper to the panel as shown in Fig. 8.  
Multiple dampers can be wired in parallel. When ARD or ZD  
damper is used, the zone LEDs switch directly from red to  
green (never amber).  
E
W2  
L
G
Y
R
O
C/X  
HEAT PUMP ZONE THERMOSTAT  
M19066  
DAMPER TERMINALS  
ON PANEL  
Fig. 5. Heat pump thermostat with single Y thermostat  
wiring.  
M6 M4  
M1  
AOBD Dampers  
Wire the AOBD, AOBD-BM and IOBD Dampers to the panel  
as shown in Fig. 6. See Fig. 7 when using two dampers on  
one zone. When three or more dampers are controlled on  
one zone, a slave damper control relay (SDCR) is required.  
POWER CLOSE  
SPRING OPEN  
MODEL ARD, ZDS, ZDB  
M19037A  
Fig. 8. ARD or ZD Damper wiring.  
MARD or CDO-51 Dampers  
Wire the MARD or CDO-51 Damper to the panel as shown in  
Fig. 9. These are floating control modulating dampers, but are  
controlled as two-position dampers on the TZ-3 panel.Two  
dampers can be wired in parallel.  
5
68-0223-2  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
ZONE CONTROL PANEL  
DAMPER TERMINALS  
M6  
M4  
M1  
ZMS  
SENSOR  
TL  
TL  
MARD OR CDO-51  
COM / M1  
M19072  
CL / M6  
OP / M4  
Fig. 12. Discharge Air Temperature Sensor (C7735A or  
ZMS) wiring.  
M19069  
Add-A-Zone Panel  
Wire the Add-A-Zone (TAZ) Panel to the TotalZone (TZ-3)  
Panel as shown in Fig. 13. Up to nine TAZ Panels can be  
wired to one TZ-3 panel. See Fig. 13.  
Fig. 9. MARD and CDO-51 Damper wiring.  
ML6161 Motor Actuator  
When the ML6161 Motor Actuator is used, wire as shown in  
Fig. 10. Wire the R8222 relay to prevent the damper LED from  
constantly lighting amber.  
Use 18-gauge thermostat wire for runs up to a maximum of  
500 feet. Keep these wires at least 12 in. from line voltage  
wiring and equipment; otherwise, use shielded cable wiring.  
IMPORTANT:  
When multiple panels are used, it is important that  
the transformers be in-phase. Check the phasing by  
measuring for 24V across the TR2 transformer termi-  
nals on each panel. There should be 0 Vac. If not,  
reverse the TR1and TR2 transformer wires on one of  
the panels and recheck.  
ZONE CONTROL PANEL  
DAMPER TERMINALS  
ZONE  
THERMOSTAT  
TERMINAL  
M6  
M4  
M1  
R
ML6161  
COM / M1  
R8222 RELAY  
CL / M6  
OP / M4  
AZ1  
TZ-3  
AZ2  
M19070  
AZ1  
TAZ  
AZ2  
Fig. 10. ML6161 Damper Motor Actuator wiring.  
Transformer  
Wire the transformer to the panel as shown in Fig. 11.  
AZ1  
TAZ  
AZ2  
NOTE: If the installation includes an Add-A-Zone panel, see  
the TotalZone Add-A-Zone Panels section.  
TO ADDITIONAL  
TAZ PANELS  
M19073  
Fig. 13. TotalZone Add-A-Zone wiring.  
24 VOLT  
TRANSFORMER  
TR2  
TR1  
Conventional Equipment  
Wire the heating and cooling equipment to the equipment  
terminals on the TZ-3 Panel as shown in Fig. 14.  
Electric Furnaces: Set DIP switch 8 to On to energize the fan  
with a call for heat.  
24V, 40 VA  
TRANSFORMER  
C
R
MODEL AT140D1046  
M19071  
Hydro-Air: Wire the zone valve or circulator relay to the W1  
equipment terminal. (If the circulator relay has powered  
terminals, use an isolation relay.) Set DIP switch 8 to On to  
energize the fan with a call for heat.  
Fig. 11. Transformer wiring.  
Discharge Air Temperature Sensor  
Wire the C7735A or the ZMS to the panel as shown in Fig. 12.  
Oil Heat: Wire an isolation relay on the W equipment wire to  
isolate the oil primary from the panel.  
68-0223-2  
6
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
Multi-Stage: Wire the equipment as shown in Fig. 14 using the  
W2 terminal for second stage of heat and the W3 terminal for  
third stage of heat. Wire the Y2 for second stage of cooling.  
REMOTE OCCUPIED/  
UNOCCUPIED CONTROL  
(CLOSE IN UNOCCUPIED)  
HEAT  
COOL  
PURGE  
FAN  
EM.HT  
ZONE 1  
ZONE 2  
ZONE 3  
TM  
ZoneMAX  
TEMPERATURE  
SENSOR  
ON  
ZoneMAXTM  
TL  
TL  
BOOT  
OFF  
TO TERMINAL AZ2 ON TAZ (IF USED)  
TO TERMINAL AZ1 ON TAZ (IF USED)  
AZ2  
AZ1  
OCCUP  
REMOTE  
130  
F
140  
F
15 MINUTES  
10 MINUTES  
20 MINUTES  
25 MINUTES  
30 MINUTES  
120  
110  
F
F
150  
160  
F
F
5
MINUTES  
Add-A-Zone  
OVERRIDE  
PURGE  
MAXIMUM  
TEMPERATURE  
STAGE TIMER  
OUTDOOR CONDENSING UNIT  
ON  
UNOCCUP  
Y2  
Y1  
O
Y2  
1
2
3
4
5
6
7
8
Y
OC  
C
R
OC  
24V TRANSFORMER  
R
G
TR2  
TR1  
B
FAN RELAY  
G
W1  
E
HEAT RELAY  
W
W2  
W3  
ZONE 1  
MOTOR  
M1  
ZONE 2  
ZONE 3  
MOTOR  
M1  
W2  
THERMOSTAT  
THERMOSTAT  
MOTOR  
M1  
THERMOSTAT  
2 STAGE  
EM HEAT  
W2  
L
G
Y
R
W
M6 M4  
W2  
L
G
Y
R
W
M6 M4  
W2  
L
G
Y
R
W
M6 M4  
HVAC CONTROLS  
MODEL TZ-3  
C
G
Y
R
W
C
G
Y
R
W
C
G
Y
R
W
ZONE 1  
THERMOSTAT  
ZONE 2  
THERMOSTAT  
ZONE 3  
THERMOSTAT  
C
R
24V, 40 VA  
TRANSFORMER  
4
1
5
2
6
3
Z
X
4
1
5
6
3
Z
X
2
MODEL ARD OR  
ZD DAMPERS  
OPPOSED BLADE DAMPER MOTORS  
M19074  
Fig. 14. Heating and cooling equipment.  
Two-speed Compressor: Wire the second stage compressor  
to both Y2 and W2. Wire the auxiliary heat to W3. Remove the  
two-stage emergency heat jumper and install a jumper from  
W3 to E.  
Heat Pump Equipment  
Wire the heat pump to the equipment terminals on the panel  
as shown in Fig. 15. Refer to manufacturer’s instructions for  
additional wiring instructions and substitute the TZ-3  
equipment terminals for the thermostat terminals shown.  
Fossil Fuel Kits with Heat Pumps: Wire these systems like  
Fig.15 but use the manufacturer’s fossil fuel kit. Wire the  
Trane XL 1800 and the TAYPLUS 103 as shown in Fig. 16.  
The recommended thermostat is theT8611G2051.  
IMPORTANT  
Some heat pump manufacturers (such as York and  
Trane) use the B terminal as the transformer com-  
mon. Do not connect the common from the equip-  
ment to the zone control panel.  
7
68-0223-2  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
OUTDOOR CONDENSING UNIT  
TZ-3  
PANEL  
COMPRESSOR  
RELAY  
Y
Y2  
Y1  
O
REVERSING  
VALVE (COOL)  
O
C
R
24V TRANSFORMER  
FAN RELAY  
R
G
G
B
W1  
E
EMERGENCY  
HEATING RELAY  
E
W2  
W3  
2 STAGE  
HEATING RELAY  
W2  
EQUIP  
M19075  
HEAT PUMP CONTROLS  
Fig. 15. Heat pump with auxiliary heat wiring.  
.
HEAT  
COOL  
PURGE  
FAN  
EM.HT  
ZONE 1  
TAYPLUS 103  
ZoneMAXTM  
W3  
Y2  
X2  
Y3  
Y1  
X3  
B
G3  
G1  
W1  
TL  
TL  
AZ2  
AZ1  
130  
F
140  
F
15 MINUTES  
10 MINUTES  
20 MINUTES  
25 MINUTES  
30 MINUTES  
120  
110  
F
F
150  
160  
F
F
5
MINUTES  
Add-A-Zone  
OVERRIDE  
PURGE  
MAXIMUM  
TEMPERATURE  
STAGE TIMER  
ON  
Y2  
Y1  
O
1
2
3
4
5
6
7
8
R
G
G
W2  
W1  
B
B
T
W1  
E
F
Y2  
R
W2  
W3  
ZONE 1  
MOTOR  
M1  
ZONE 2  
O
THERMOSTAT  
W2 L  
THERMOSTAT  
MOTOR  
M1  
M6 M4  
Y
B
2 STAGE  
EM HEAT  
G
Y
R
W
M6 M4  
W2 L  
G
Y
R
W
YLO  
BK  
R
Y1  
O
MODEL TZ-3  
ODT  
1
X2  
2
3
W2  
L
G
Y
E
R
O/B C  
VARIABLE  
SPEED  
GAS  
TRANE XL1800  
CONDENSING  
UNIT  
T8611G2051  
FURNACE  
1
3
5
NOTES:  
1. DIP SWITCHES 6 OFF AND 7 ON.  
2. DIP SWITCHES 1 OFF AND 5 ON.  
K2  
3. T8011R OR T8411R MAY ALSO BE USED.  
4. REMOVE THE 2 STAGE EM HEAT JUMPER.  
4
M19076  
Fig. 16. Trane XL 1800 with TAYPLUS 103 in restricted mode wiring.  
Fig. 17. Turn DIP switch number 8 to On for fan on in heat.  
Remove the two-stage emergency heat jumper.  
Water Source Heat Pumps  
Wire the equipment, as applicable, to the TZ-3 as shown in  
68-0223-2  
8
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
Waterfurnace: Wire this system to the panel as shown in Fig.  
17 except use two isolation relays on compressor wires W1,  
Y1 and W2, Y2.  
R
Y2  
Y1  
O
C
1ST STAGE COMPRESSOR  
R
Y1  
G
2ND STAGE COMPRESSOR  
AUXILIARY HEAT  
B
Y2  
W
W1  
E
W2  
W3  
O
G
2 STAGE  
EM. HT.  
M19077  
Fig. 17. Water source heat pump wiring.  
panel, the Idle LED flashes seven times before entering  
STARTUP AND CHECKOUT  
the Purge mode.) Then the Idle LED turns red and each  
damper LED turns green.  
5. Set zone one thermostat to heat and raise the setpoint  
to call for heat. Verify that the heat LED is red and zone  
one damper remains green while the other damper LED  
turns red.  
6. Raise zone two setpoint to call for heat. Lower zone one  
setpoint to stop the call for heat to that zone. Verify that  
zone one LED turns red (it may be amber while moving)  
and zone two LED turns green.  
After the installation is complete, verify correct operation as  
follows:  
1. Place the Em Heat switch in the Off (down) position.  
2. Place the Zone-A-Lone switch in the Occup/Remote  
(up) position.  
3. Verify that the DIP switches are set correctly. See  
Sequence of Operation section and Table 6 for correct  
configuration.  
4. Power up the TZ-3 and set the thermostats so no zones  
are calling. The board then enters the Purge mode  
where all dampers open and the fan operates for two or  
three and one-half minutes (configurable). (If there is  
no Discharge Air Temperature Sensor connected to the  
7. Repeat for zone three.  
8. Alternately, lower the setpoint to call for cooling.Verify  
that the green cool LED illuminates.  
9
68-0223-2  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
OPERATION  
Sequence of Operation  
Single and Multi-Stage Operation  
On a call for heating or cooling, the zone damper stays open  
to the calling zone, and the dampers close to the zones that  
are not calling. The TZ-3 panel brings on the heating or  
cooling and conditioned air is delivered to the calling zone  
until that zone is satisfied. When the call is satisfied, the  
system enters the Purge mode. This holds open the damper  
of the last zone calling and purges into that zone. The purge  
time can be set to three and one-half or two minutes. After  
purge, all dampers return to the Open position.  
The panel can control up to three stages of heating and two  
stages of cooling. The first stage is energized by the  
thermostat. The second stage of heating is brought on by the  
thermostat, timer, or number of zones calling. The third stage  
of heating is brought on by the timer or number of zones  
calling. The second stage of cooling is brought on by the timer  
or number of zones calling.  
The following instructions show how to configure the panel for  
stage control.  
Any zone thermostat can call for heating or cooling. If there  
are co-existing calls for heat and cool, the panel first accepts  
the first call. Once that call is satisfied, or a maximum of 20  
minutes has elapsed, the panel switches to allow the opposite  
call.  
If the equipment is single stage, set the DIP switches as  
follows:  
DIP Switch Number  
Status  
Off  
On a call for heating or cooling, the heat LED illuminates red  
or the cool LED illuminates green. The zone damper LED  
turns green for the zone calling, and the dampers in the zones  
not calling close and turn red. As AOBD dampers move, the  
LEDs turn amber.  
1
5
Off  
1st Stage by Thermostat, 2nd and 3rd Stages by  
Timer (Fig. 18)  
The thermostat controls the first stage of heat or cool. If the  
call is not satisfied by the first stage within the time set on the  
timer, the panel energizes the second stage. If the call for heat  
is not satisfied by the second stage within the time set on the  
timer, the panel brings on the third stage.  
Purge Mode  
At the end of every call for heat or cool, the panel enters a  
Purge mode that holds open the calling zone damper for three  
and one-half or two minutes. During this time, the panel or the  
HVAC equipment can operate the fan. Purge also serves as a  
time delay to prevent short cycling of the heating and cooling  
equipment after each call. Purge LED lights to signal that the  
system is in the Purge mode. Pressing the purge override  
button for two seconds overrides the Purge mode. Unless  
there is a new call for heat or cool during the Purge mode, all  
dampers are moved to the Open position at the end of purge.  
Set the DIP switches as follows:  
DIP Switch Number  
Status  
Off  
DIP Switch  
1
5
Number  
Status  
Off  
Purge Time  
3.5 minutes  
2 minutes  
Off  
3
3
On  
15 MINUTES  
10 MINUTES  
5 MINUTES  
20 MINUTES  
25 MINUTES  
30 MINUTES  
DIP Switch  
Number  
Status  
Fan Control  
STAGE TIMER  
M19078  
4
Off  
Panel control of fan  
in purge  
Fig. 18. Stage timer.  
4
On  
HVAC control of fan  
in purge  
1st Stage by Thermostat, 2nd Stage Heat by  
Thermostat  
The thermostat controls the first stage of heat or cool and the  
second stage of heat. The timer controls the second stage of  
cool and third stage of heat. If the first and second stages  
combined do not satisfy the heat call within the time specified  
on the timer, the panel brings on the third stage of heat.  
Individual Zone Fan Control  
When all zones are satisfied, the Fan switch of each  
thermostat controls the fan operation for that zone. When the  
Fan switch is in the On position, the fan is energized, and the  
dampers close to zones where the Fan switch is in the Auto  
position. If there is a call for heat or cool during this time, the  
circulation mode ceases, and the heat or cool call is honored.  
When the zone calling is satisfied, the circulation call  
resumes.  
Set the DIP switches as follows:  
68-0223-2  
10  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
.
stage heat using a 5-30 minute panel, or staging can be  
controlled by the percentage of zones calling. The O and B  
equipment terminals are energized for changeover use with  
heat pumps.  
DIP Switch Number  
Status  
Off  
1
5
On  
Heat Pump Thermostats  
HEAT PUMP THERMOSTATS WITH SINGLE Y OUTPUT  
Stages Based On Number of Zones Calling  
Heat pump thermostats can be used if thermostat control of  
nd  
The thermostat controls the first stage of heat or cool. The  
second stage of heat and cool and the third stage of heat are  
energized by the percentage of zones calling. See Table 4.  
Set the DIP switches as follows:  
2
stage is desired. Thermostats that have a single Y  
terminal for first stage heat and cool can be used. When  
selected, all thermostats must be similar.  
If the thermostat energizes O on a call for cool, DIP switch 7  
must be set to On and the O thermostat wire connected to W  
on the thermostat connections for that zone. If the thermostat  
energizes B on a call for heat, DIP switch 6 must be set to On  
and the B wire connected to W on the panel. In either case,  
the O is always energized to the equipment in cooling, and the  
B is always energized to the equipment in heating.  
DIP Switch Number  
Status  
On  
1
5
Off  
IMPORTANT  
Be sure DIP switches 6 and 7 are never both in the  
On position.  
See Table 4 to determine the number of zones required to  
activate stages of equipment based on the number of zones in  
the system. Staging is based on the zones available in the  
system, not the number of zones used for the particular  
application. As zones satisfy, stages 2 and 3 drop out.  
HEAT PUMP THERMOSTATS WITH SEPARATE Y1 AND W1  
TERMINALS  
Use heat pump thermostats with separate Y1 and W1  
terminals for first stage heat and cool. Keep DIP switches 6  
and 7 in the Off position when thermostat O or B wire is not  
used.  
Table 4. Staging by Percentage of Zones Calling.  
Number of Zones Required  
Number of  
Emergency Heat Control  
Emergency heat is defined as using an auxiliary heat source  
without using the heat pump. When the Em Heat switch or a  
thermostat puts the panel in the emergency heat mode, the  
heat pump is locked out and calls for heat are sent to the E  
terminal.  
Zones in  
System  
2nd Stage  
Heat  
3rd Stage  
Heat  
2ndStage  
Cool  
3
4
2
2
2
3
3
3
4
4
4
5
3
3
4
5
5
6
7
7
8
9
2
3
3
4
4
5
5
6
6
7
A heat pump thermostat can also control emergency heat  
from the thermostat system switch. An L terminal energized  
during the emergency heat mode is required. The  
recommended heat pump thermostats all have hot L  
terminals. See Table 1.  
5
6
7
The two stage Em heat jumper connects W2 and E. Jumper  
both pins to energize the W2 equipment on a call for  
emergency heat. When E is a different source of heat than  
W2, remove the jumper (for example, two-stage heat pump  
with electric heat strip auxiliary heat ). The jumper is located  
below the equipment terminals on the lower-left corner of the  
panel.  
8
9
10  
11  
12  
Multi-Stage Thermostats  
Use multi-stage thermostats to control two stages of heat via  
W1 and W2 thermostat terminals. Control the third stage of  
heat through the stage timer built into the panel. Control the  
second stage of cooling with the timer.  
Thermostat Operation  
Conventional Thermostats  
Manual and Automatic Changeover Thermostats  
Automatic changeover thermostats provide automatic  
changeover by zone. Manual changeover thermostats heat or  
cool based on the mode of each zone thermostat.  
Conventional (R,W,Y,G) heat/cool thermostats can be used  
with the TZ-3 to control single or multi-stage gas, electric or oil  
systems and heat pumps with auxiliary heat. The panel can  
be configured to control second stage heat and cool and third  
11  
68-0223-2  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
Rebooting Microprocessor  
Zone-A-Lone Switch  
Certain conditions can hang up the microprocessor. To reset  
it, press and release the Boot button. The system reboots and  
enters the Purge mode.  
When the Zone-A-Lone switch is in the occupied position and  
the OC/OC terminals are not used, the system functions as a  
normal zone control system. When switched to the  
unoccupied position, all dampers are opened and all requests  
for heat, cool, or fan, except from zone one, are not honored.  
The zone one thermostat becomes the controlling thermostat  
for the entire system. During long unoccupied periods, one  
thermostat can be set back instead of adjusting each zone  
thermostat in the building.  
Discharge Air Temperature Sensor  
The Discharge Air Temperature Sensor (not included) is a  
supply-duct-mounted temperature probe used to control  
capacity and prevent over-heating or coil-icing. The sensor  
attaches to the TL terminals on the panel.  
The T8601D2027 and T8611G2051 include two OC terminals.  
When wired to the TZ-3 OC terminals, and with the Zone-A-  
Lone switch in the occupied position, the board enters the  
unoccupied mode during the Leave and Sleep programs. This  
feature requires two extra wires to the Zone 1 thermostat.  
Set the high limit temperature on the maximum temperature  
dial on the panel, located left of the stage timer. See. Fig. 19.  
Set the temperature from 110 °F to 160°F in ten-degree  
increments. The recommended setting for fossil fuel/ electric  
systems is 160°F (default factory setting). For heat pump  
systems, the recommended setting is 120F.  
Circuit Breaker Protection  
The cooling temperature limit can be set at 40°F or 48°F.  
A built-in thermal circuit breaker protects the TotalZone panel.  
This circuit breaker protects the panel against shorts in the  
thermostat and damper wiring and the remote occupied/  
unoccupied switch. It does not protect against shorts in the  
wiring of the HVAC equipment into the panel.  
130 F  
140 F  
120 F  
110 F  
150 F  
160 F  
When the circuit breaker is tripped, none of the LEDs  
illuminate and the yellow rectangular component located to  
the left of the TR1 and TR2 terminals is hot to the touch.  
Remove power to the panel for at least ten seconds to allow  
the circuit breaker to cool off and reset. To eliminate the short,  
verify the dampers and thermostat wiring.  
MAXIMUM  
TEMPERATURE  
M19079  
Fig. 19. Maximum temperature dial.  
IMPORTANT  
Be sure the Discharge Air Temperature Sensor wir-  
ing does not run parallel with line voltage wiring  
unless more than 12 in. of separation exists or  
shielded cable is used.  
Fan On In Heat  
The system blower can be set to come on with a call for heat  
as required for hydro-air, heat pump, or electric heat systems.  
Set the blower using DIP switch 8.  
Use DIP switch 2 to change cooling limit settings.  
DIP Switch 8  
Fan Control  
HVAC system  
Fan on in heat  
Cooling  
Off  
On  
Temperature  
Dip Switch  
Status  
Off  
Limit  
40°F  
48°F  
2
2
TotalZone Add-A-Zone Panels  
On  
Using TotalZone Add-A-Zone Panels, the system can be  
expanded to up to 30 zones. There are three models: TAZ-1,  
one zone; TAZ-2, two zone; and TAZ-3, three zone. Two wires  
are required to connect the TAZ to the TZ-3.  
If the system trips due to exceeding a high or low temperature  
limit, the heating or cooling system shuts down and the fan  
continues running to purge the conditioned air from the  
plenum.  
IMPORTANT:  
When multiple panels are used, it is important that  
the transformers be in-phase. Check the phasing by  
measuring for 24V across the TR2 transformer termi-  
nals on each panel. There should be 0 Vac. If not,  
reverse the TR1and TR2 transformer wires on one of  
the panels and recheck.  
When the low limit is tripped, the Cool LED flashes until it  
resets. When the high limit is tripped, the Heat LED flashes  
until it resets.  
Once the temperature recovers by ten degrees, the  
equipment run resumes.  
See Fig. 13 and the TAZ installation instructions for more  
information.  
68-0223-2  
12  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
TROUBLESHOOTING  
Table 5. Troubleshooting.  
Possible Cause  
Symptom  
Action  
No LEDs are Illuminated  
No power to the board.  
Shorted wire.  
Check for 24 Vac ( 10%) across TR1 and TR2  
Check fuse. If hot, a short exists in thermostat, damper,  
or Zone-A-Lone wiring.  
Damper LEDs on, but no  
other LEDs illuminated.  
Insufficient voltage.  
Check for 24 Vac ( 10%) across TR1 and TR2.  
Incorrect configuration.  
Check jumpers and DIP switches for correct  
configuration.  
Erratic Operation  
Emergency Heat switch on.  
Zone-A-Lone Feature on.  
Incorrectly wired.  
Turn off (down) Emergency Heat switch.  
Turn off (up) Zone-A-Lone.  
Heat pump operates  
Verify that W1 and Y1 equipment terminals are jumped.  
incorrectly or not at all.  
Incorrectly configured.  
Verify DIP switches 6 and 7 are correctly set for the type  
of thermostat used.  
Heat LED flashing.  
Cool LED flashing.  
High limit reached.  
Low limit reached.  
LED stops flashing with ten-degree fall.  
LED stops flashing with ten-degree rise.  
Idle LED flashes five times  
on bootup.  
ZMS problem or not  
connected.  
Verify that ZMS (if any) is connected, and wired  
correctly.  
Idle LED flashes  
continuously  
ZMS failure.  
Check for dc voltage across TL terminals:  
If 0 volt = short.  
If 1 volt = open.  
If .2 to .8 volt = normal.  
Add-A-Zone not operating.  
Incorrectly configured.  
Incorrectly wired.  
Verify DIP switch settings on the TAZ panels.  
Check AZ1and AZ2 for correct wiring.  
Be sure that AZ1 and AZ2 are at least 12 in. from line  
voltage wiring.  
Be sure the transformers are in-phase.  
13  
 
68-0223-2  
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
Table 6. DIP Switch Settings and Functions.  
DIP Switch  
Function  
Off (default)  
On  
1
Staging by number of zones  
calling.  
Stages timer or thermostat  
controlled.  
Stages controlled by number of zones  
calling.  
2
3
4
5
6
ZMS low limit.  
40°F  
48°F  
Purge mode timing.  
Fan control during purge.  
Control of W2 outpu.t  
Three and one-half minutes.  
Controlled by panel.  
Timer controlled.  
Two minutes.  
HVAC equipment controlled  
Controlled by W2 from thermostat,  
Using B on single Y thermostat.  
Cool changeover from  
thermostat.  
Not using B on single Y  
thermostats; or using  
conventional thermostats.  
7
8
Heat changeover from  
thermostat.  
Not using O on single Y  
thermostats; or using  
conventional thermostats.  
Using O on single Y thermostat.  
Fan control in heat.  
Fan controlled by panel in cool  
and HVAC equipment in heat.  
Panel in heat and cool controlling fan.  
Table 7. LED Indicators.  
Not Illuminated  
LED  
Heat  
Color  
Red  
Illuminated  
Heat call  
Flashing  
High limit reached  
Low limit reached  
ZMS failure  
No heat calls.  
Cool  
Green  
Amber  
Red  
Cool call  
No cool calls.  
Purge  
Idle  
Purge mode  
No calls  
Not in Purge mode.  
Call for heat, cool, or fan.  
Initial powerup without ZMS  
wired  
Fan  
Green  
Red  
Fan only call  
No fan only call.  
EM Heat  
Zone 1,2,3  
Emergency Heat mode  
Not in emergency Heat mode.  
Zone  
1,2,3  
Green—open  
Red—closed  
Amber—moving (some  
dampers)  
68-0223-2  
14  
 
TZ-3 TOTALZONE® ZONE CONTROL PANEL  
See Fig. 20 for TZ-TotalZone Zone Control Panel.  
SYSTEM STATUS  
LED INDICATIORS  
ZoneMAX™  
TERMINALS  
TEST JUMPERS  
(NOT USED)  
ZONE DAMPER  
LED INDICATORS  
BOOT  
BUTTON  
ZoneMAX™  
TEMP  
SETTING  
EMERGENCY  
HEAT SWITCH  
ADD-A-  
ZONE™  
TERMINALS  
STAGE  
TIMER  
ZONE-A-  
LONE™  
SWITCH  
HVAC  
EQUIPMENT  
TERMINALS  
REMOTE  
ZONE-A-LONE™  
CONTROL  
TERMINALS  
TRANSFORMER  
TERMINALS  
2 STAGE  
EM HEAT  
JUMPER  
RESETTABLE  
FUSE  
ZONE, THERMOSTAT & DAMPER  
MOTOR TERMINALS  
DIP SWITCHES FOR  
SYSTEM CONFIGURATION  
M13421  
Fig. 20. TZ-3 TotalZone Zone Control Panel.  
15  
68-0223-2  
 
Home and Building Control Home and Building Control  
Honeywell  
1985 Douglas Drive North  
Golden Valley, MN 55422  
Honeywell Limited-Honeywell Limitée  
35 Dynamic Drive  
Scarborough, Ontario  
M1V 4Z9  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
68-0223-2 G.H. Rev. 9-01  
 

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