Honeywell Thermostat TZ 4 User Manual

TZ-4 TotalZone® Zone Control Panel  
PRODUCT DATA  
FEATURES  
Up to three stages heat and two stages cooling can be  
controlled by thermostat, built-in timer, or based on  
the percentage of zones calling.  
Controls single-stage, multi-stage, conventional, heat  
pump or dual-fuel equipment.  
Controls up to four zones and can be expanded up to  
32 zones with Add-A-Zone Control Panels.  
Uses Honeywell four-wire, single-stage, multi-stage, or  
select heat pump thermostats.  
Zone-A-Lone central setback feature.  
Purge timer protects equipment between calls for heat  
or cool with choice of panel or HVAC equipment  
controlled fan.  
System and zone damper LEDs indicate system and  
damper status.  
Individual zone fan control.  
Discharge Air Temperature Sensor for capacity control  
with adjustable high and low limits.  
APPLICATION  
Thermal circuit breaker protects panel and transformer  
from damage if miswired.  
The TZ-4 TotalZone Zone Control Panel controls single-stage,  
multi-stage, conventional or heat pump heat/cool equipment.  
It controls 2, 3 or 4 zones, and is expandable up to 32 zones  
with optional TotalZone® Add-A-Zone™ Four Zone Control  
Panel.  
For Internet access:  
For technical support, call 1-800-828-8367.  
Contents  
Application.........................................................................  
Features ............................................................................  
Specifications ....................................................................  
Installation .........................................................................  
1
1
2
4
Startup and Checkout........................................................ 12  
Operation........................................................................... 12  
Troubleshooting................................................................. 17  
® U.S. Registered Trademark  
Copyright © 2002 Honeywell • All Rights Reserved  
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Table 1. Recommended Thermostats.  
Non-Programmable  
T87F1859/Q539A1014  
System  
Programmable  
Single Stage  
T8601D2027  
T8600D2069  
T8600D2028  
T8601D2019  
T8602D2018  
T8602D2000  
T8000C1002  
T8000C1010  
T8001C1019  
T87F4010/Q539A4026  
T8501D1046  
T8400C1016  
T8400C1040  
T8400C1099  
PC8900/W8900A/C  
b
Heat Pump  
a,c,d  
T8611G2051  
Y594R1243  
a,e  
T8011R1006  
T8011R1014  
Y594G1252  
T8411R1002  
T8411R1028  
b
Multi-Stage  
f
Y594D1347  
T8624D2004  
T8624D2012  
T8524D1015  
a
b
Heat pump thermostat with single Y first-stage terminals. See Heat Pump Thermostats section and Fig. 6.  
Multi-stage and heat pump thermostats are not required to control multi-stage and heat pump systems with TotalZone. They are  
used only when second stage or emergency heat control from the zone thermostat is needed.  
c
The Y594R1243 must be wired to the panel using the B terminal for changeover.  
d
Cut thermostat second-stage variable heating anticipator wire (gray).  
e
f
Cut thermostat first-stage fixed heating anticipator wire (bare) and second-stage variable heating anticipator wire (gray).  
Cut thermostat second-stage cooling anticipator wire (lowest bare wire).  
Recommended Dampers (See Table 2):  
Ten ZD or ARD dampers maximum connected to each panel  
and a maximum of five dampers per zone when using two  
40 VA transformers.  
Table 2. Recommended Dampers.  
Use SDCR and 40 VA transformer for additional dampers  
required on one zone.  
Honeywell Damper Type  
Round  
Rectangular  
Dampers are connected to M1 Common, M4 Open, and M6  
Closed (see Fig. 7-10 for hookups).  
Power-open/power-closed (for  
systems > 2000 cfm)  
MARD  
D643 using  
ML6161  
Motor  
Actuator  
Motor Terminal  
Common/M1  
Damper Action  
Common  
Spring-open/power-closed (for  
systems </= 2000 cfm)  
ARD  
ZD  
Open/M4  
Power Open  
Power Close  
Accessories: For required accessories, see Table 3.  
Closed/M6  
3
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
3. Mount the TZ-4 zone panel near the HVAC equipment;  
(on a wall or on the cold-air return). See Fig. 2.  
4. Level the TZ-4 for appearance only.  
Table 3. Required Accessories (Not Supplied).  
Accessory  
Description  
Bypass Rating  
(cfm)  
Wiring  
40 VA  
transformers  
AT140D1046  
(PMT-40)  
CAUTION  
Voltage Hazard.  
Capacity  
protector  
C7735A1000  
Can cause electrical shock or equipment damage.  
Disconnect power before continuing installation.  
Outdoor  
C7089B1000  
Wiring must comply with applicable codes, ordinances, and  
regulations.  
Temperature  
Sensor  
(Required for  
dual-fuel  
applications)  
1. Connect thermostats as shown in Fig. 3-6.  
2. Connect dampers as shown in Fig. 7-10.  
3. Connect C7735A Discharge Air Temperature Sensor  
(not supplied) to the DATS terminals. The wires are not  
polarized. See Fig. 13.  
4. Connect Add-A-Zone panels (if used) to the AZ1 and  
AZ2 terminals.  
Round static  
pressure  
regulator  
damper  
SPRD7  
SPRD8  
SPRD9  
SPRD10  
SPRD12  
SPRD14  
SPRD16  
300  
400  
600  
750  
1200  
1800  
2400  
5. Connect the HVAC equipment to the EQUIP terminals  
on the panel. See Fig. 15-21.  
6. Connect a 40 VA, 24 volt transformer to R (hot) and C  
(common). This must be a dedicated transformer and  
each TAZ-4 board also requires a transformer. See Fig.  
12.  
7. The auxiliary 40 VA 24-volt transformer can be con-  
nected to T1 and T2 if additional power for dampers is  
required. This second transformer is not required; how-  
ever, total power consumption of panel and damper is  
limited to 40VA without it.  
Rectangular  
static pressure  
regulator  
SPRD12x8  
SPRD12x10  
SPRD12x12  
SPRD20x8  
SPRD20x10  
SPRD20x12  
1000  
1200  
1400  
1600  
2000  
3000  
damper  
INSTALLATION  
Mounting  
RETURN  
AIR  
CAUTION  
Equipment Damage Hazard.  
Do not mount TZ-4 inside HVAC equipment  
Mount only on wall or on cold air return.  
TZ-4  
OPTIONAL  
LOCATION  
TZ-4  
Identifying DIP Switches  
EL  
EC  
TR  
O
NI  
C
A
IR  
C
LE  
AN  
ER  
WATER  
HEATER  
FURNACE  
OR BOILER  
This panel has two banks of DIP switches, DIP switch 4 (S4)  
and DIP switch 5 (S5), see Fig 15. Each bank has eight  
individual switches that are identified by two numbers; the first  
number is the bank number (4 or 5) and the second number  
identifies the individual switch. For example, DIP 5-1 is bank  
5, switch 1.  
HIGH  
EFFICIENCY  
AIR CLEANER  
M20517  
1. Mount the thermostats in each zone of the living space  
using the installation instructions provided with each  
thermostat.  
Fig. 2. TZ-4 mounting location.  
2. Mount the dampers in the ductwork using the installa-  
tion instructions provided with each damper.  
68-0259-1  
4
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Wiring Diagrams (Fig. 3 and 4)  
Conventional Thermostats  
Conventional (RWYG) thermostats can be used to control  
conventional, multi-stage, and heat pump equipment. If the  
thermostat has a common terminal, it is wired to C on the  
panel, see Fig. 3. A multi-stage thermostat is wired with the  
second and third stage of heat to W2 and W3 on the panel  
thermostat connections, and with the second stage of cooling  
to Y2. Leave the zone O/B thermostat jumper on the TZ-4  
disconnected. See Single and Multi-Stage Operation in the  
Operation section for instructions on staging the TZ-4.  
3
The PC8900 with the W8900A or W8900C can be used as a  
zone thermostat. See Fig. 4 for hookup. This thermostat can  
be used to control up to 2 heat and 2 cool stages of  
conventional equipment. When used to control heat pump  
equipment, the W8900A is recommended.  
TZ-4 THERMOSTAT  
CONNECTORS  
2
G
Connect a jumper on the W8900 from Rc to Rh as shown in  
Fig. 4. Wire terminals R and C to a transformer. If the system  
current draw is within specifications, the R and C on the  
W8900 could alternately be connected to R and C on the  
TZ-4. The PC8900/W8900 draws 5 VA.  
C
R
1
W
Y
TYPICAL SINGLE STAGE  
THERMOSTAT WIRING  
COMMON (C) TERMINAL IS USED ONLY BY THERMOSTATS  
THAT REQUIRE A COMMON WIRE.  
1
2
MULI-STAGE THERMOSTATS ARE WIRED SIMILARLY BUT WITH  
Y2 AND W2 USED FOR SECOND STAGE COOL AND HEAT.  
THIRD STAGE OF HEAT (W3) CAN BE WIRED TO W3/AUX.  
3
LEAVE O/B JUMPER ON TZ-4 DISCONNECTED.  
M20509B  
Fig. 3. Typical single-stage thermostat wiring.  
5
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
2
TZ-4 THERMOSTAT  
CONNECTORS  
CO2  
S1  
S
T1  
T
OUT  
OUT  
1
2
3
4
LED  
GND  
C
R
RH  
RC  
HUM  
HUM  
VNT  
VNT  
G
Y2  
Y1  
24 VAC  
W1  
W2  
120 VAC  
1
2
3
4
PC8900  
1
W8900A,C  
W8900A/C IS RECOMMEDED FOR CONVENTIONAL AND HEAT PUMP APPLICATIONS. THE W8900B CANNOT  
SWITCH THE PANEL TO EMERGENCY HEAT.  
1
2
M20508B  
LEAVE O/B JUMPER ON TZ-4 DISCONNECTED.  
Fig. 4. PC8900 with W8900A,C Thermostat wiring.  
If the PC8900/W8900 /Thermostat is used in a heat pump  
application, use the W8900A, not the W8900B, and wire as  
shown in Fig. 4.  
Heat Pump Thermostats  
Select a heat pump thermostat from Table 1. If the thermostat  
selected has a separate Y1 and W1 wire, as shown in Fig. 5,  
leave the zone O/B thermostat type jumper on the TZ-4  
disconnected, and wire as shown in Fig. 5.  
68-0259-1  
6
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
.
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. Use these dampers  
on systems up to 2000 cfm.  
AOBD Dampers  
Wire the AOBD dampers to the panel as shown in Fig. 9. Two  
AOBD can be wired in tandem as shown in Fig. 10. More than  
two AOBD dampers require the Slave Damper Control Relay  
(SDCR).  
3
TZ-4 THERMOSTAT  
CONNECTORS  
3
G
L
C
R
1
W2  
E
2
TZ-4 THERMOSTAT  
CONNECTORS  
W1  
Y
B
O
HEAT PUMP THERMOSTAT WITH  
SEPARATE Y1 AND W1  
THERMOSTAT WIRING  
G
L
COMMON (C) TERMINAL IS USED ONLY BY THERMOSTATS  
THAT REQUIRE A COMMON WIRE.  
1
C
1
2
3
JUMP E TERMINAL TO W1 FOR EMERGENCY HEAT.  
LEAVE O/B JUMPER ON TZ-4 DISCONNETED.  
W2  
R
E
M20506B  
2
W1  
B
Y1  
Fig. 5. Heat pump thermostat with separate Y1 and W1  
terminals and multi-stage thermostat wiring.  
O
HEAT PUMP THERMOSTAT WITH  
SINGLE Y THERMOSTAT WIRING  
If the thermostat selected from Table 1 has a single Y terminal  
for first stage heat and cool, wire as shown in Fig. 6. Wire  
either O or B (not both) from the thermostat to the O/B  
terminal on the panel. Locate the O/B thermostat jumper on  
the TZ-4 near each zone thermostat wiring terminal. Connect  
the jumper if O was used or leave disconnected if B was used.  
Connect second stage, auxiliary heat to W2.  
COMMON (C) TERMINAL IS USED ONLY BY THERMOSTATS  
THAT REQUIRE A COMMON WIRE.  
1
2
NORMALLY, CONNECT E ON THERMOSTAT TO W1 ON PANEL.  
ALTERNATIVELY, INSTALL JUMPER FROM E TO Y1 ON  
THERMOSTAT.  
3
CONNECT O/B TERMOSTAT JUMPER ON TZ-4 PANEL IF  
USING O FROM THERMOSTAT; DISCONNECT IF USING B.  
M20507B  
When using two- or three-stage heat pump thermostats with  
single Y first-stage hookup, place a jumper from W2 to Y2 on  
the TZ-4 thermostat connections. See Fig. 7.  
Fig. 6. Heat pump thermostat with single Y thermostat  
wiring.  
See Single and Multi-Stage Operation in the Operation  
section for instructions on staging the TZ-4.  
7
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
MOTOR TERMINALS  
M6 M4 M1  
3
4
1
5
2
6
3
Z
X
FIELD JUMPER  
M19067  
DAMPER MOTOR  
TZ-4  
THERMOSTAT  
CONNECTORS  
Fig. 9. Wiring AOBD damper to panel.  
1
4
MOTOR TERMINALS  
M6 M4 M1  
G
L
FIELD JUMPER  
C
R
W3  
E
2
Y2  
Y1  
B
4
1
5
2
6
3
Z
X
4
1
5
2
6
3
Z
X
O
HEAT PUMP THERMOSTAT WITH  
SINGLE Y THERMOSTAT WIRING  
DAMPER MOTORS  
M19068  
COMMON (C) TERMINAL IS USED ONLY ON THERMOSTATS  
THAT REQUIRE A COMMON WIRE.  
1
2
ALTERNATIVELY, JUMPER E THERMOSTAT TERMINAL TO Y1 FOR  
EMERGENCY HEAT.  
Fig. 10. Wiring two AOBD dampers in parallel.  
3
4
CONNECT O/B JUMPER ON TZ-4 WHEN USING O OR DISCONNECT  
WHEN USING B FOR CHANGEOVER.  
MARD Dampers or Dampers Using an ML6161 Motor  
Actuator  
Wire the MARD Damper or ML6161 Actuator to the panel as  
shown in Fig. 11. These are floating control actuators, but are  
controlled as two-position devices on the TZ-4 panel. Multiple  
dampers can be wired in parallel.  
FIELD INSTALLED JUMPER FROM Y2 TO W2 ON PANEL  
THERMOSTAT CONNECTIONS.  
M20891  
Fig. 7. Heat pump thermostat with 3-stage heat, 2-stage  
cool single Y thermostat wiring.  
The ML6161 Motor causes the damper LED to illuminate  
green constantly. WIre a relay as shown in Fig. 12 to restore  
damper position indication.  
Use the MARD or D643 with the ML6161 on systems above  
2000 cfm.  
ZONE PANEL  
CONNECTIONS  
M1  
M4  
M6  
MARD  
CW  
COM  
CCW  
Fig. 8. Wiring ARD or ZD damper to panel.  
M20136A  
Fig. 11. Wiring MARD Damper or ML6161 Actuator to  
panel.  
68-0259-1  
8
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
ZONE CONTROL PANEL  
DAMPER TERMINALS  
R
C
M6  
M4  
M1  
ML6161  
24 VAC, 40 VA  
Transformer  
COM  
CCW  
CW  
PANEL  
XFRM  
R8222 RELAY  
R
R
C
C
T1  
T2  
DAMPER  
XFRM  
C
R
M20548A  
24 VAC, 40 VA  
Transformer  
(Required if  
more than  
Fig. 12. MARD or ML6161 Damper Motor Actuator using  
R8222 Relay wiring.  
four dampers)  
M20518  
Transformer  
Fig. 13. Wiring transformer(s) to panel.  
1. Wire the transformers to the panel as shown in Fig. 13.  
One 40 VA, 24 Vac transformer controls up to five ARD  
or ZD dampers.  
Discharge Air and Outdoor Temperature Sensors  
Wire the C7735A Discharge Air Temperature Sensor (DATS)  
to the panel as shown in Fig. 14. The Purge LED (yellow)  
flashes in all modes except purge if no DATS is connected to  
the TZ-4 or if there is a problem with the DATS or the wiring.  
For dual fuel applications, connect the C7089 Outdoor  
Temperature Sensor as shown in Fig. 14.  
2. Connect the transformer to terminals R and C.  
3. Add the auxiliary transformer if six to ten ARD or ZD  
dampers are used.  
a. Wire auxiliary transformer to terminals T1 and T2.  
b. It is important that these two transformers be wired  
in phase. If they are wired out of phase, the internal  
circuit breaker trips and the board de-powers. If this  
occurs, remove power, correct the wiring and  
restore power to the board.  
OT  
Sensor  
OT  
IMPORTANT  
OT  
If more than five dampers are required for one zone  
or if more than ten dampers are used for the TZ-4,  
use the Slave Damper Control Relay (SDCR).  
DATS  
DATS  
DATS  
M20519  
Fig. 14. Wiring C7735A Discharge Air Temperature Sensor  
(DATS) to panel.  
Add-A-Zone Panel  
Remove power from TZ-4 before connecting AZ-1 and AZ-2.  
Wire the Add-A-Zone (TAZ-4) Panel to the TotalZone (TZ-4)  
Panel as shown in Fig.15. Up to seven TAZ-4 Panels can be  
wired to one TZ-4 panel to control up to 32 zones.  
9
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Conventional Equipment  
Wire the heating and cooling equipment to the equipment  
terminals on the TZ-4 Panel as shown in Fig. 16.  
AZ1  
AZ2  
Conventional Equipment: Set DIP switch 5-1 to on.  
Electric Furnaces: Set DIP switch 5-6 to off to energize the fan  
with a call for heat.  
Hydro-Air: Wire the zone valve or circulator relay to the Rh  
and W1 equipment terminals. (If the circulator relay has  
powered terminals, remove the Rh Rc jumper.) Set DIP switch  
5-6 to off to energize the fan with a call for heat.  
TotalZone Panel  
DIP-SWITCHES  
Oil Heat: Wire the oil primary T, T terminals to the Rh and W  
equipment terminals. (If the oil primary has powered  
terminals, remove the Rh Rc jumper.)  
O
N
5
4
3
2
1
AZ1  
AZ2  
Multi-Stage: Wire the equipment as shown in Fig. 16 using the  
W2 and W3 terminals for second and third stages of heat.  
Wire Y2 for second stage of cooling.  
AZ1  
AZ2  
TO NEXT  
ADD-A-ZONE  
PANEL  
See Single and Multi-Stage Operation in the Operation  
section to configure DIP switches 4-1, 4-2, 4-3, and 4-4.  
TotalZone  
Add-A-Zone Panel  
M20362  
Fig. 15. TotalZone Add-A-Zone wiring.  
68-0259-1  
10  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
HEAT  
COOL  
PURGE  
130 F  
FAN EM. HEAT ZONE 1 ZONE 2 ZONE 3 ZONE 4  
H
C
ZONE LEDs  
ON Damper open or opening  
OFF Damper closed or closing  
(factory installed).  
30 F  
ON  
140 F  
25 F  
35 F  
LED STATES:  
Heat LED  
Heating Mode  
Flashing Heat LED High Limit  
Cooling Mode  
Flashing Cool LED Low Limit  
Purge Mode  
Flashing Purge LED Sensor Failure  
EM  
Heat  
120 F  
110 F  
150 F  
160 F  
20 F  
15 F  
40 F  
45 F  
HVAC Equipment  
Heating Transformer  
Cooling Transformer  
First Stage Heating  
PURGE  
OVERRIDE  
Cool LED  
OFF  
Occup  
Zone-  
BOOT  
R
R
24 VAC  
Equip.  
H
C
MAX. DUCT TEMP. DUAL FUEL OT SETTING  
Purge LED  
A-Lone  
W /E  
1
Fan LED  
EM Heat LED  
Fan Mode  
EM Heat Mode  
MOMENTARY PUSH BUTTONS  
Boot – Clears microprocessor  
Purge Overide – Bypass Purge Mode  
Unoccup  
Second Stage Heating Relay  
Third Stage Heating  
W
2
W /AUX  
3
DIP SWITCH S4 SETTINGS  
First Stage Cooling Relay  
Second Stage Cooling Relay  
Fan Relay  
Y
1
DIP SWITCH S4  
DIP SWITCH S5  
1
2
3
4
5
6
7
8
2ND STAGE OPERATION: TABLE 1  
2ND STAGE OPERATION: TABLE 1  
3RD STAGE OPERATION: TABLE 1  
3RD STAGE OPERATION: TABLE 1  
STAGE TIMER: TABLE 2  
STAGE TIMER: TABLE 2  
STAGE TIMER: TABLE 2  
UNUSED  
AZ1  
Add-A-Zone  
Panel(s)  
O
N
O
N
Y
2
AZ2  
OC  
OC  
G
1 2 3 4 5 6 7 8  
1 2 3 4 5 6 7 8  
Remote  
Zone-A-Lone  
O/B  
TABLE 1  
#1/#3 #2/#4 OPERATION  
TABLE 2  
#5 #6 #7 TIME  
1
1
0
0
1
0
1
0
STAT  
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
5 MIN  
OT  
Sensor  
OT  
OT  
ON  
1
CONV  
40F  
2.0 MIN 3.5 MIN  
HVAC PANEL  
NO CHG OPEN  
HVAC PANEL  
COOL HEAT  
DISABLEDENABLED  
OFF  
0
HP  
48F  
TIMER  
% ZONES  
OFF  
0 10 MIN  
1 15 MIN  
0 20 MIN  
1 30 MIN  
0 40 MIN  
1 50 MIN  
0 60 MIN  
DIP SWITCH S5 SETTINGS  
24VAC, 40VA  
Transformer  
1
2
3
4
5
6
7
8
SYSTEM TYPE  
DATS LOW LIMIT  
PURGE TIME  
PURGE FAN  
PURGE DAMPER  
HEAT FAN  
DATS  
DATS  
PANEL  
XFRM  
DATS  
R
C
R
C
T1  
T2  
O/B ENERGIZED  
DUAL FUEL  
DAMPER  
XFRM  
ZONE 1  
Thermostat  
ZONE 2  
Thermostat  
ZONE 3  
ZONE 4  
Thermostat  
2
2
Damper  
W3/  
2
2
L
1
2
“C” terminal connection  
is not required on battery  
powered, power stealing,  
or some electromechanical  
thermostats.  
C
R
Damper  
Thermostat  
Damper  
W3/  
Y1 G O/BY2 W2AUX M6 M4 M1  
L
Damper  
W1/  
E
W3/  
W1/  
E
W1/  
W1/  
W3/  
Y1 G O/BY2 W2AUX  
24VAC, 40VA  
Transformer  
(Required if  
more than  
C
R
Y1 G O/BY2 W2AUX  
M6 M4 M1  
C
R
Y1 G O/BY2 W2AUX  
M6 M4 M1  
C
R
E
C
R
E
M6 M4 M1  
L
L
1
1
1
1
Leave jumper disconnected  
for conventional thermostats.  
four dampers)  
C
R
W1 Y1 G O/B Y2 W2W3/  
AUX  
L
C
R
W1 Y1 G O/B Y2 W2W3/  
AUX  
L
C
R
W1 Y1 G O/B Y2 W2W3/  
AUX  
L
C
R
W1 Y1 G O/B Y2 W2W3/  
AUX  
L
Zone 1 Thermostat  
Zone 2 Thermostat  
Zone 3 Thermostat  
Zone 4 Thermostat  
This diagram shows the typical  
three-stage equipment, thermostat,  
and damper motor connections.  
For specific wiring for other  
thermostats, damper motors, and  
HVAC Equipment, refer to the  
nstallation Instructions.  
4
1
5
2
6
3
Z
X
Power-closed  
Spring-open  
(Model ZD)  
Power-closed  
Spring-open  
(Model ARD)  
Power-closed  
Spring-open  
(Model ARD)  
Power-open  
Power-closed  
(Opposed Blade  
Damper Motors)  
ZONE DAMPER MOTORS  
M1 - common  
M4 - power open  
M20520B  
M6 - power closed  
Fig. 16. Wiring conventional heating and cooling equipment to TZ-4 panel.  
Single-Speed Compressor: Wire the compressor to the Y1  
terminal.  
Heat Pump Equipment  
See Fig. 17-22 for heat pump wiring. Refer to manufacturer  
instructions for additional wiring details and substitute the  
TZ-4 equipment terminals for the thermostat terminals shown.  
— Connect the changeover relay to O/B equipment terminal.  
— Set switch number 5-7 to on for O (cool) changeover, or to  
off for B (heat) changeover.  
If the same heat source is used for auxiliary heat and  
emergency heat:  
— Wire a jumper from W2 (auxiliary heat) to W1/E  
(emergency heat).  
— Do not connect W3/AUX. See Fig. 17.  
— Set switch number 5-1 to off for heat pump equipment.  
— Set DIP switches 4-1, 4-2, 4-3, and 4-4. See Single Stage  
and Multi-Stage Operation in the Operation section.  
If auxiliary heat is separate from emergency heat:  
— Connect the auxiliary heat to W2 jumped to W3/AUX.  
— Connect the emergency heat to W1/E. See Fig. 18.  
IMPORTANT  
Some heat pump manufacturers (such as York and  
Trane) use the B terminal as the transformer  
common. Do not connect the common from the  
equipment to the zone control panel.  
11  
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
H
C
H
C
(factory installed).  
(factory installed).  
HVAC Equipment  
Heating Transformer  
Cooling Transformer  
HVAC Equipment  
Heating Transformer  
Cooling Transformer  
R
R
24 VAC  
Equip.  
H
C
R
R
24 VAC  
Equip.  
H
C
Auxiliary Heat  
1
W /E  
1
Auxiliary Heat  
1
W /E  
1
W
2
W
2
W /AUX  
3
W /AUX  
3
Compressor  
Y
1
First Stage Compressor  
Second Stage Compressor  
Fan Relay  
Y
1
Y
2
Y
2
Fan Relay  
G
G
Reversing Valve  
O/B  
Reversing Valve  
O/B  
1
FIELD INSTALLED JUMPER.  
M20521B  
1
FIELD INSTALLED JUMPER.  
M20523B  
Fig. 17. Wiring single-stage heat pump with auxiliary heat.  
Fig. 19. Wiring two-stage heat pump with auxiliary heat.  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
H
C
(factory installed).  
H
C
(factory installed).  
HVAC Equipment  
HVAC Equipment  
Heating Transformer  
Cooling Transformer  
Emergency Heat  
Auxiliary Heat  
1
R
R
24 VAC  
Equip.  
H
C
Heating Transformer  
Cooling Transformer  
Emergency Heat  
R
R
24 VAC  
Equip.  
H
C
W /E  
1
W
2
W /E  
1
W /AUX  
3
W
2
Compressor  
Auxiliary Heat  
Y
1
W /AUX  
3
First Stage Compressor  
Second Stage Compressor  
Fan Relay  
Y
2
Y
1
Fan Relay  
G
Y
2
Reversing Valve  
O/B  
G
Reversing Valve  
O/B  
1
FIELD INSTALLED JUMPER.  
M20522B  
M20524A  
Fig. 18. Wiring single-stage heat pump with separate  
auxiliary and emergency heat.  
Fig. 20. Wiring two-stage heat pump with separate  
auxiliary and emergency heat.  
Two-speed Compressor: Wire the first stage compressor to  
Y1 and the second stage compressor to Y2.  
Dual Fuel Heat Pumps: Install C7089B1000 Outdoor  
Temperature Sensor to terminals OT and OT.  
— Set outdoor sensor setting to:  
If the same heat source is used for auxiliary heat and  
emergency heat:  
— Wire a jumper from W3/AUX (auxiliary heat) to W1/E  
(emergency heat), see Fig. 19.  
Balance point temperature of heat pump or  
Outdoor temperature above which the heat pump is to  
be used and below which the fossil fuel is to be used.  
— Set DIP switch number 5-8 to off for dual fuel operation.  
— Connect compressor to Y1. See Fig. 21.  
— Connect fossil fuel heat to W1/E.  
If auxiliary heat is separate from emergency heat:  
— Wire the auxiliary heat to W3/AUX.  
— Wire emergency heat to W1/E, see Fig.20.  
Connect second stage of fossil fuel to W3/AUX.  
Connect second stage of compressor to Y2. See  
Fig. 22.  
68-0259-1  
12  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
STARTUP AND CHECKOUT  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
After the installation is complete, verify correct operation:  
1. Place the Em Heat switch in the Off (down) position.  
2. Place the Zone-A-Lone switch in the Occup/Remote  
(up) position.  
H
C
(factory installed).  
3. Verify that DIP switches are set correctly. See  
Sequence of Operation section and Table 8 for correct  
configuration.  
HVAC Equipment  
Heating Transformer  
Cooling Transformer  
R
R
24 VAC  
Equip.  
H
C
4. Power up the TZ-4 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  
panel, the purge LED flashes in all modes other than  
purge.) The damper LEDs are green to indicate the  
dampers are open. Press Purge Override button on  
panel to exit Purge mode.  
First Stage Fossil Fuel  
W /E  
1
W
2
W /AUX  
3
First Stage Compressor  
Y
1
Y
2
Fan Relay  
G
Reversing Valve  
O/B  
M20525A  
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  
LEDs turn off.  
Fig. 21. Dual Fuel with single-stage heat pump and single-  
stage fossil fuel.  
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 off and zone two LED turns green.  
7. Repeat for zones three and four.  
Single Transformer Heating/Cooling  
systems require a jumper to be installed  
connecting R and R  
8. Alternately, lower the setpoint to call for cooling. Verify  
that the green cool LED illuminates.  
H
C
(factory installed).  
HVAC Equipment  
Heating Transformer  
Cooling Transformer  
OPERATION  
R
R
24 VAC  
Equip.  
H
C
First Stage Fossil Fuel  
W /E  
1
Identifying DIP Switches  
W
2
This panel has two banks of DIP switches, DIP switch 4 (S4)  
and DIP switch 5 (S5). Each bank has eight individual  
switches that are identified by two numbers; the first number  
is the bank number (4 or 5) and the second number identifies  
the individual switch. For example, DIP 5-1 is bank 5,  
switch 1.  
Second Stage Fossil Fuel  
First Stage Compressor  
Second Stage Compressor  
Fan Relay  
W /AUX  
3
Y
1
Y
2
G
Reversing Valve  
O/B  
M20526A  
Sequence of Operation  
Fig. 22. Dual fuel with two-stage heat pump and  
one- or two-stage fossil fuel.  
When there is no call for heat, cool or fan, the board is in  
idle mode, no system LEDs are illuminated and the green  
damper LEDs indicate open.  
On a call for heat, cool, or fan, the calling zone damper  
stays open, and other zone dampers close:  
Water Source Heat Pumps  
Wire the equipment, as applicable, to the TZ-4 as shown in  
Fig. 17-19. Refer to manufacturer instructions for additional  
wiring instructions and substitute the TZ-4 equipment  
terminals for the thermostat terminals shown.  
— Wire first stage compressor to Y1, second stage  
compressor to Y2.  
TZ-4 panel energizes the HVAC equipment and condi-  
tioned air is delivered to the calling zone.  
Heat LED (red), cool LED (green), or fan LED (green)  
illuminates to indicate equipment operation.  
Fan LED illuminates only on a call for circulation; it  
does not illuminate during a call for heat or cool.  
When the call is satisfied, the system enters the Purge  
mode. After purge, all dampers return to the Open  
position, depending on the setting of DIP switch S5-5.  
— Connect auxiliary heat to W3/AUX and emergency heat to  
W1/E.  
— If auxiliary heat and emergency heat are the same, wire a  
jumper from W1/E to W3/AUX.  
— Connect changeover relay to O/B equipment terminal.  
— Set DIP switch 5-7 to on for O (cool) changeover, or to off  
for B (heat) changeover.  
Any zone thermostat can call for heating or cooling. If there  
are co-existing calls for heat and cool, the panel 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 after  
completing Purge mode.  
— Set DIP switch 5-1 to off for heat pump equipment.  
13  
 
68-0259-1  
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
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 two  
(default) or three and one-half minutes.  
DIP Switch bank 4, switches 1-4, are used to configure the  
staging method:  
— Switches 1 and 2 configure second stage control. See  
Table 4.  
During this time, the panel or the HVAC equipment can be  
configured to operate the fan. The Purge LED lights to signal  
that the system is in the Purge mode. Pressing the purge  
override button overrides the Purge mode.  
— Switches 3 and 4 configure third stage control. See Table.  
5.  
— When stage two or three is not used, disable that stage by  
turning off the corresponding switches.  
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.  
Single Stage  
If equipment is single stage, set bank 4, DIP switches 1-4 Off:  
The panel can be configured to open all dampers during the  
purge mode.  
DIP Switch  
Number  
Stage  
Stage  
Status  
nd  
nd  
rd  
4-1  
4-2  
4-3  
4-4  
Off  
Off  
Off  
Off  
2
2
3
3
DIP Switch  
Number  
Status  
Off  
Purge Operation  
3.5 minutes  
Stage  
Stage  
Stage  
5-3  
5-3  
On  
2 minutes  
5-4  
Off  
Panel control of fan in  
purge  
rd  
5-4  
5-5  
5-5  
On  
Off  
On  
HVAC control of fan  
in purge  
THERMOSTAT-CONTROLLED STAGES  
Use a thermostat that energizes W2 and Y2 for second stage  
of heat and cool, and W3 for third stage of heat. Configure for  
thermostat as shown in Tables 4 and 5.  
All dampers open  
during purge  
TIMER-CONTROLLED STAGES  
Damper positions  
unchanged during  
purge  
— The Timer energizes second stage of heat or cool after the  
first stage begins calling for the set amount of time.  
— The third stage of heat is energized once the second stage  
of heat is calling for the set amount of time.  
— Second and third stages remain energized until the call for  
heat or cool is satisfied.  
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 dampers close to zones where fan switch is  
in Auto position.  
See Table 6 for stage timer configuration of DIP switch bank 4,  
switches 5, 6, and 7.  
— During a call for heat or cool at this time, the circulation  
mode ceases, and the heat or cool call is honored.  
— When the zone calling is satisfied, the circulation call  
resumes.  
PERCENTAGE OF ZONES CALLING—CONTROLLED STAGES  
Percentage of zones calling energizes second or third stage  
based on the percentage of zones called for heat or cool on  
the TZ-4 and TAZ-4.  
The percentage of zones necessary to turn stages two and  
three on and off:  
Single and Multi-Stage Operation  
The panel can control up to three stages of heating and two  
stages of cooling:  
— First stage is energized by the thermostat.  
Stage  
Stage 2 Heat  
Stage 2 Cool  
Stage 3 Heat  
On  
Off  
— Second stage of heating or cooling and third stage of  
heating can be energized by the thermostat, timer, or the  
percentage of zones calling. (For instance, first and second  
stage of heat and cool can be thermostat energized and  
third stage heat can be configured for timer energizing.)  
— See Tables 5 and 6 for second and third stage  
configuration. Note that second and third stage can be  
controlled differently. Set stages not used to Off.  
>33%  
>33%  
>66%  
</=25%  
</=25%  
</=56%  
68-0259-1  
14  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
HEAT PUMP OPERATION  
The panel can control single- or two-stage heat pumps with or  
without auxiliary heat. Set DIP switch 5-1 to Off for heat pump  
control. This energizes equipment terminal Y1 on a call for  
first stage heat or cool. If second stage is configured to  
operate with DIP switch 4-1 and 4-2, Y2 energizes to call for  
second stage compressor. When in heat pump mode, the  
panel energizes the fan with a call for heat and a call for cool.  
Configure DIP switch 5-7 for correct changeover valve control.  
See Table 7.  
Table 5. DIP Switch Bank 4, Stage 3 Configuration.  
Operation  
Thermostat  
Switch 4-3  
On  
Switch 4-4  
On  
Off  
On  
Off  
Timer  
On  
Off  
Off  
% of zones calling  
Off  
DUAL FUEL OPERATION  
The panel can control a heat pump and a fossil fuel furnace in  
a dual-fuel application. A C7089B1000 Outdoor Temperature  
Sensor is wired to the OT and OT terminals on the TZ-4 to  
switch the panel from heat pump to fossil fuel operation. DIP  
switch 5-8 is set to Off to enable dual-fuel operation.  
Table 6. DIP Switch Bank 4, Stage Timer Configuration.  
The dual-fuel OT setting (see Fig. 16 for location) is set to the  
outdoor temperature that locks out the heat pump and uses  
the fossil fuel mode. The fan is energized by the panel for two  
minutes after the changeover and the Em Ht LED illuminates  
when in the fossil fuel mode.  
DIP Switch  
4-5  
DIP Switch  
4-6  
DIP Switch  
4-7  
Time  
5 minutes  
On  
On  
On  
On  
Off  
Off  
Off  
Off  
On  
On  
Off  
Off  
On  
On  
Off  
Off  
On  
Off  
On  
Off  
On  
Off  
On  
Off  
10  
15  
20  
30  
40  
50  
60  
IMPORTANT  
A C7089B1000 Outdoor Temperature Sensor and a  
C7735A1000 Discharge Air Temperature Sensor are  
required for dual fuel operation.  
Table 4. DIP Switch Bank 4, Stage 2 Configuration.  
Operation  
Thermostat  
Timer  
Switch 4-1  
Switch 4-2  
On  
On  
Off  
Off  
On  
Off  
On  
Off  
% of Zones  
Off  
Table 7. DIP Switch Bank 5 Settings and Functions.  
DIP Switch  
Function  
On (Default)  
Conventional  
Off  
5-1  
5-2  
5-3  
5-4  
5-5  
5-6  
System Type  
Heat Pump  
48°F  
DATS low limit.  
40°F  
Purge mode timing.  
Fan control during purge.  
Damper control during purge  
Fan control in heat.  
Two minutes.  
Three and one-half minutes.  
Panel controlled.  
HVAC controlled.  
Last zone(s) calling open.  
All dampers open.  
Fan controlled by panel in cool  
and HVAC equipment in heat.  
Panel in heat and cool controlling  
fan.  
5-7  
5-8  
Operation of O/B heat pump  
changeover equipment terminal.  
O/B equipment terminal is  
energized in cool (O).  
O/B equipment terminal is  
energized in heat (B).  
Dual fuel operation.  
Disabled.  
Enabled.  
15  
 
68-0259-1  
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Multi-Stage Thermostats  
Thermostat Operation  
Use multi-stage thermostats to control up to three stages of  
heat and two stages cool with the W1/E,W2, W3/AUX, Y1,  
and Y2 thermostat terminals.  
Conventional Thermostats  
Conventional (R,W,Y,G) heat/cool thermostats can be used  
with the TZ-4 to control single or multi-stage gas, electric or oil  
systems and heat pumps with auxiliary heat.  
Manual and Automatic Changeover Thermostats  
Manual or automatic changeover thermostats can be used.  
The panel determines the call for heat or cool based on which  
was called for first. Subsequent calls for heat or cool are  
honored when the initial call is satisfied, or 20 minutes has  
elapsed.  
The panel can be configured to control second stage heat and  
cool and third stage heat using a 5-60 minute timer, or staging  
can be controlled by the percentage of zones calling.  
When using conventional thermostats on heat pump  
applications, set DIP switch 5-1 to Off for heat pump  
equipment. Set DIP switch 5-7 for correct reversing valve  
operation. See Table 7.  
Rebooting Microprocessor  
To reset the panel, press and release the Boot button.The  
system reboots and enters the Purge mode.  
Heat Pump Thermostats  
Discharge Air Temperature Sensor  
The C7735A1000 Discharge Air Temperature Sensor (not  
included) is a supply-duct-mounted temperature probe used  
to control capacity and prevent high limit or coil-icing. The  
sensor attaches to the two DATS terminals on the panel.  
When a high or low limit is reached, the panel shuts off the  
equipment and keeps the fan operating for 2-1/2 minutes.  
After this time, it re-energizes the equipment after the  
discharge air recovers by 10 degrees. When the DATS  
exceeds the high or low limit, the Heat (red) or Cool (green)  
LED flashes.  
HEAT PUMP THERMOSTATS WITH SINGLE Y OUTPUT  
Thermostats that have a single Y terminal for first stage heat  
and cool and those with separate Y1 and W1 can be used.  
Thermostats of either wiring type can be used on any zone.  
For thermostats with a single Y, the reversing valve wire must  
be connected to O/B:  
— Connect the thermostat Y terminal to Y1 on the panel.  
— If the thermostat energizes O on a call for cool, connect the  
O/B jumper located near the thermostat wiring terminals.  
— If the thermostat energizes B on a call for heat, leave the  
O/B jumper disconnected.  
Set the temperature from 110°F to 160°F. See Fig. 23. The  
recommended setting for fossil fuel/ electric systems is 160°F  
(default factory setting). For heat pump systems, the  
recommended setting is 120°F. When using a heat pump  
with dual fuel activated (DIP 5-8), the high limit will auto-  
matically be set for 120 degrees when the outputs call for  
compressor only operation. When the outputs call for non-  
heat pump operation, the high limit will be set to the adjustable  
110° to160°F setting.  
HEAT PUMP THERMOSTATS WITH SEPARATE Y1 AND W1  
TERMINALS  
Heat pump thermostats with separate Y1 and W1 terminals for  
first stage heat and cool are wired to Y1 and W1/E. Leave the  
O/B jumper, located near the thermostat wiring terminals,  
disconnected.  
Emergency Heat Control  
The cooling temperature limit can be set at 40°F or 48°F.  
Emergency heat is defined as using an auxiliary heat source  
without using the heat pump. When the Em Heat switch is in  
the emergency heat position, the heat pump is locked out and  
calls for heat are sent to the W1/E equipment terminal for  
fixed stage emergency heat. Second stage emergency heat  
energizes equipment terminals W3/Aux. Second stage  
emergency heat is configured with DIP switch S41 and 2.  
When the panel is in the heat pump mode, W1/E is energized  
only in emergency heat.  
130 F  
140 F  
120 F  
110 F  
150 F  
160 F  
MAX DUCT  
TEMP  
M19079A  
Fig. 23. DATS high-limit temperature dial.  
IMPORTANT  
A recommended heat pump thermostat can also control  
emergency heat from the thermostat system switch. See  
Table 1.  
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.  
68-0259-1  
16  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Use DIP switch 5-2 to change cooling limit settings:  
When the circuit breaker is tripped, none of the LEDs  
illuminate and the yellow rectangular component located left  
of the R and C terminals is hot to touch. Remove power to the  
panel for at least five minutes to allow the circuit breaker to  
cool off and reset. To eliminate the short, verify the dampers  
and thermostat wiring.  
Cooling Temperature  
Limit  
Dip Switch  
5-2  
Status  
On  
40°F  
48°F  
5-2  
Off  
Fan On In Heat  
The system blower can be set to come on with a call for heat  
as required for hydro-air or electric heat systems. Set the  
blower function using DIP switch 5-6.  
Zone-A-Lone Switch  
When the Zone-A-Lone switch is in the occupied (up) position  
and the OC/OC terminals are not used, the system functions  
as a zone control system.  
When DIP switch 5-1 is set to Off for heat pump control, the  
panel brings the fan on with a call for heat and a call for cool.  
When switched to the unoccupied (down) position, all  
dampers are opened and all requests for heat, cool, or fan,  
except from zone one, are not honored.  
DIP Switch 5-6  
Fan Control  
HVAC system  
Fan on in heat  
On  
Off  
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.  
TotalZone Add-A-Zone Panels  
The T8601D2027 and T8611G2051 include two OC terminals.  
When wired to the TZ-4 OC terminals, and with the Zone-A-  
Lone switch in the occupied (up) position, the board enters the  
unoccupied mode during the Leave and Sleep programs. This  
feature requires two extra wires to the Zone 1 thermostat.  
Using TotalZone Add-A-Zone Panels, the system can be  
expanded to up to 32 zones using TAZ-4 Add-A-Zone panels.  
Two wires connect the AZ1 and AZ2 terminals on the TZ-4 to  
the matching terminals on the TAZ board(s).  
See Fig. 15 and the TAZ installation instructions for more  
information.  
Circuit Breaker Protection  
A built-in thermal circuit breaker protects the TotalZone panel.  
This circuit breaker protects the panel against shorts in the  
thermostat and damper wiring. It does not protect against  
shorts in the wiring of the HVAC equipment into the panel.  
17  
68-0259-1  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
TROUBLESHOOTING  
Table 8. Troubleshooting.  
Possible Cause  
Symptom  
Action  
No LEDs are Illuminated  
No power to the board.  
Transformers out of phase  
Shorted wire.  
Check for 24 Vac (±10%) across R and C.  
If 48 Vac across R and T1, reverse T1 and T2 wires.  
Check thermal circuit breaker. If hot, a short exists in  
thermostat or damper wiring.  
Damper LEDs on, but no  
other LEDs illuminated.  
Insufficient voltage.  
Incorrect configuration.  
Incorrectly wired.  
Check for 24 Vac (±10%) across R and C.  
Check jumpers and DIP switches for correct configuration.  
Verify equipment and thermostat terminal wiring.  
Heat pump operates  
incorrectly or not at all.  
Incorrectly configured.  
Verify DIP switch configuration.  
Verify position of O/B thermostat type jumper.  
Erratic Operation  
Emergency Heat switch  
on.  
Turn off (down) Emergency Heat switch.  
Zone-A-Lone Feature on.  
High limit reached.  
Turn off (up) Zone-A-Lone.  
Heat LED flashing.  
Cool LED flashing.  
LED stops flashing with ten-degree fall and 2-1/2 minute  
delay.  
Low limit reached.  
LED stops flashing with ten-degree rise and 2-1/2 minute  
delay.  
Purge LED flashes  
continuously.  
DATS or OT problem or not  
connected.  
Verify that DATS and OT (if any) are connected and wired  
correctly.  
Add-A-Zone not operating.  
Incorrectly configured.  
Incorrectly wired.  
Verify DIP switch settings on the TAZ panels.  
Check AZ1and AZ2 for correct wiring.  
Verify that a separate transformer is used for each TAZ-4  
panel.  
Be sure that AZ1 and AZ2 are at least 12 in. from line voltage  
wiring.  
68-0259-1  
18  
 
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Table 9. LED Indicators.  
LED  
Heat  
Color  
Red  
Illuminated  
Heat call.  
Not Illuminated  
Flashing  
High limit reached.  
Low limit reached.  
No heat calls.  
Cool  
Green  
Amber  
Cool call.  
No cool calls.  
Purge  
Purge mode.  
Not in Purge mode.  
DATS failure: slow flash.  
OT failure: fast flash.  
DATS and OT failure:  
alternating fast and slow flash.  
Fan  
Green  
Red  
Fan only call.  
No fan only call.  
EM Heat  
Emergency Heat mode or  
dual-fuel mode.  
Not in emergency Heat mode or  
dual-fuel mode.  
Zones  
Green  
Damper is open or  
opening.  
Damper is closed or closing.  
1,2,3.4  
19  
 
68-0259-1  
TZ-4 TOTALZONE® ZONE CONTROL PANEL  
Automation and Control Solutions  
Honeywell  
Honeywell Limited-Honeywell Limitée  
1985 Douglas Drive North  
Golden Valley, MN 55422  
35 Dynamic Drive  
Scarborough, Ontario  
M1V 4Z9  
68-0259-1 G.H. Rev. 12-02  
 

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