MASTERTROL® AUTOMATIC BALANCING SYSTEM™ (MABS®) EZ ZONE (EZ-2 AND EZ-4) CONTROL PANELS
5 69-1360–2
Fig. 7. ML6161 Damper Motor Actuator wiring diagram.
NOTE: The R8222 relay is not required for operation, but if it
is not used, the zone damper LED will be constantly
green.
Fig. 8. Transformer wiring diagram.
NOTE: A dedicated 40 VA, 24 Vac transformer must be
used.
Fig. 9. ZoneMAX or C7735 Sensor wiring diagram.
Fig. 10. Single-stage heating and cooling equipment
wiring diagram.
NOTES:
— Electric Furnace: Set DIP switch 8 to On to ener-
gize the fan with a call for heat.
— Oil Furnace: See Fig. 11 for hookup.
— Hydro-Air: Wired similarly except the zone valve
or circulator relay is connected to the W1. (If the
circulator relay has powered terminals, an isola-
tion relay may be needed. See Fig. 11.) DIP
switch 8 must be set to On to energize the fan
with a call for heat.
Fig. 11. Oil furnace and air conditioning wiring diagram.
NOTE: The isolation relay is required to isolate the cooling
transformer from the heating transformer.
R8222
24V SPDT RELAY
ML6161A
MOTOR
CW
COM
CCW
M6
M4
M1
M19039
1
2
CONTROL PANEL CONNECTIONS
CR
TR1
TR2
24V, 40 VA
TRANSFORMER
MODEL PMT-40
M19040
TL
TL
ZMS
SENSOR
or C7735
M19041A
W2
M19042
E
W1
B
G
R
24V TRANSFORMER
FAN RELAY
HEAT RELAY
HVAC CONTROLS
MABS EZ
PANEL
OUTDOOR CONDENSING UNIT
COMPRESSOR RELAY
R
C
Y
G
W
O
Y1
Y2
W2
M19043
E
W1
B
G
R
24V TRANSFORMER
FAN RELAY
COOLING RELAY
HVAC CONTROLS
OIL
PRIMARY
R8222 24V
ISOLATION
RELAY
MABS EZ
PANEL
R
C
Y1
G
T
T
O
Y1
Y2
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