Honeywell MABS EZ-2, MABS EZ-4 Product Data
Mastertrol® Automatic Balancing System™
(MABS®) EZ Zone (EZ-2 and EZ-4)
Control Panels
PRODUCT DATA
FEATURES
• MABS EZ-2 controls two zones and MABS EZ-4 control
four zones. For systems requiring five or more zones,
the TotalZone series of control panels is used.
• Uses standard four-wire (R,W,Y,G) thermostats.
• Any zone thermostat changeover is based on first call.
• Bank of eight DIP switches provides easy system
configuration.
• Adjustable purge timing of two minutes or three and
one-half minutes.
• Adjustable heating and cooling limit with optional
ZoneMAX Sensor.
APPLICATION
The MABS EZ-2 and EZ-4 are microprocessor-based forced
air zone control panels that provide automatic or manual
changeover control of single- and two-stage heating and
cooling and heat pumps with or without auxiliary heat.
• Stage control allows built-in timer to control heating
and cooling stages.
• Use any four-wire thermostat.
For Internet access: www.trolatemp.com or
www.honeywell.com/yourhome/zoning/zoning_home.htm
For technical support, call 1-800-TAT-Temp (1-800-828-8367).
To download Zoning literature: http://hbctechlit.honeywell.com
Contents
Application ........................................................................ 1
Features ............................................................................ 1
Specifications .................................................................... 2
Ordering Information ......................................................... 2
Installation ......................................................................... 3
Startup and Checkout........................................................ 8
Operation........................................................................... 9
Troubleshooting................................................................. 12
® U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
69- 1360- 2
MASTERTROL® AUTOMATIC BALANCING SYSTEM™ (MABS®) EZ ZONE (EZ-2 AND EZ-4) CONTROL PANELS
SPECIFICATIONS
Electrical: 24 Vac, 60 Hz.
Dimensions: 9-3/8 in. high x 7-5/8 in. wide x 1-5/8 in. deep.
Mounting: Mount with screws (supplied) through holes in
cabinet back.
Wiring: 18-gauge wire for all equipment and system connec-
tions
Wiring Connections:
Thermostat: L, G, Y, R, W.
Dampers: M6 (Closed); M4 (Open); M1 (Common) Zone-
MAX TL, TL
Transformer: TR1 (Common), TR2 (Hot)
Equipment: Y2, Y1, O, R, G, B, W1, E, W2
Table 1. Recommended Thermostats.
Trol-A-Temp Logo Honeywell Logo
System
Manual
Changeover
Auto
Changeover
Mechanical Programmable Non-Programmable Programmable
T87F3715/Q539A1436
T87F3707/Q539A1428
T8131C1020 T87F1859/Q539A1014
T8601D2027 Y594D1347 T8600D2069
Thermostats (See Table 1):
Conventional four-wire (R,W,Y,G) thermostats.
Manual or automatic changeover switching subbase for
each zone thermostat.
MABS EZ second-stage timer and emergency heat switch
replace multi-stage or heat pump thermostat.
MABS EZ with heat pump thermostat controls Emergency
Heat mode from thermostat and MABS EZ panel switch.
• Requires separate W1 and Y1 outputs for the heat
and cool calls.
• Requires L terminal energized when Emergency
Heat switch is on.
• W2 thermostat terminal is not used.
• MABS EZ panel timer turns on auxiliary heat when
not in Emergency Heat mode.
Q87F4010/Q539A4026
T8400R
T8000C1002
T8000C1010
T8600D2028
T8601D2019
T8602D2018
T8602D2000
Heat Pump T8011R1006
T8011R1014
T8411R1002
T8411R1028
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Home and Building Control Sales Office (check white pages of your phone directory).
2. Home and Building Control Customer Relations
Honeywell, 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
69-1360–2 2
MASTERTROL® AUTOMATIC BALANCING SYSTEM™ (MABS®) EZ ZONE (EZ-2 AND EZ-4) CONTROL PANELS
Dampers: See Fig. 3-7 for hookup drawings. See Table 2 for
recommended dampers.
Table 2. Recommended Dampers.
Honeywell
Damper Types Round Rectangular
Power-open/
power-closed
Spring-open/
power-closed
40 VA Transformer AT140D1046 (PMT-40) _
Capacity Protector ZMS/C7735 _
Round Static Pressure Regulator
Damper (SPRD)
MARD AOBD
AOBD-BM
CDO-51
ARD ZDB
ZDS
Table 3. Required Accessories (Not Supplied With Panel).
Accessory Description
7 SPRD
8 SPRD
9 SPRD
10 SPRD
12 SPRD
14 SPRD
16 SPRD
18 SPRD
Accessories:
For required accessories, see Table 3.
Bypass Rated Capacity
(cfm)
300
400
600
750
1200
1800
2400
3200
Rectangular Static Pressure Regulator
Damper (SPRD)
12 x 8 SPRD
12 x 10 SPRD
12 x 12 SPRD
20 x 8 SPRD
20 x 10 SPRD
20 x 12 SPRD
INSTALLATION
Mounting
CAUTION
Equipment Damage Hazard.
Do not mount MABS EZ inside HVAC equipment.
Mount only on wall or on cold air return
1. Mount the thermostats in each zone of the living space
using the installation instructions provided with each
thermostat.
2. Mount the dampers in the ductwork using the installation instructions provided with each damper.
3. Mount the MABS EZ Zone Panel near the HVAC equipment; locate it on a wall or on the cold-air return.
4. Level the MABS EZ for appearance only.
1000
1200
1400
1600
2000
3000
Wiring
CAUTION
Vol tage H a zard.
Can cause electrical shock or equipment damage.
Disconnect power before continuing installation.
Wiring must comply with applicable codes, ordinances, and
regulations.
1. Connect thermostats as shown in Fig. 1 and 2.
2. Connect dampers as shown in Fig. 3-7.
3. Connect the ZMS (not supplied) to the TL terminals.The
wires are not polarized. See Fig. 9.
4. Connect the HVAC equipment to the equipment terminals on the left side of the panel. See Figures 10-13.
5. Connect a 40 VA, 24 volt transformer (not supplied) to
TR1 (common) and TR2 (hot). This must be a dedicated
transformer. See Fig. 8.
3 69-1360–2
MASTERTROL® AUTOMATIC BALANCING SYSTEM™ (MABS®) EZ ZONE (EZ-2 AND EZ-4) CONTROL PANELS
Wiring Diagrams
See Table 1 for recommended thermostats. See Fig. 1-15 for
wiring appropriate wiring diagrams.
NOTE: The common wire (C to M1) is used only on thermo-
stats that require it.
ZONE CONNECTIONS ON PANEL
THERMOSTAT
L G Y R W M6
GYR WC
ZONE THERMOSTAT
Fig. 1. Typical single-stage thermostat hookup diagram.
ZONE CONNECTIONS ON PANEL
THERMOSTAT
LGYR W M6
MOTOR
M4 M1
M19033
MOTOR
M4 M1
NOTE: Wiring is the same for AOBD, AOBD-BM and IOBD
Dampers.
MOTOR TERMINALS
M6 M4 M1
4
5 6
123
M19036
FIELD
JUMPER
4 5 6
123
DAMPER MOTORS
Fig. 4. AOBD Damper wiring (multiple).
NOTE: For three or more AOBD dampers on one zone, a
Slave Damper Control Relay (SDCR) is required.
DAMPER TERMINALS
ON PANEL
M6 M4 M1
E W2 L G Y1 R W1 C/X
ZONE THERMOSTAT
M19034
Fig. 2. Heat pump thermostats with separate heat and
cool outputs.
Use only thermostats listed in Table 1.
MOTOR TERMINALS
M6 M4 M1
4
5 6
123
FIELD JUMPER
DAMPER MOTOR
M19035
Fig. 3. AOBD damper wiring (single).
POWER CLOSE
SPRING OPEN
C MODEL ARD, ZDS, ZDB
M19037
Fig. 5. ARD or ZD Damper wiring diagram.
NOTE: Multiple dampers can be wired in parallel, with up to
five dampers wired to each panel.
DAMPER TERMINALS
ON PANEL
M6 M4 M1
COM/M1
CL/M6
OP/M4
M19038
Fig. 6. MARD and CDO-51 Damper wiring diagram.
69-1360–2 4
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