Honeywell TrolaTemp MABS EZ-2 Product Data page 6

MASTERTROL® AUTOMATIC BALANCING SYSTEM™ (MABS®) EZ ZONE (EZ-2 AND EZ-4) CONTROL PANELS
HVAC CONTROLS
SECOND STAGE
COOLING RELAY
FIRST STAGE
COOLING RELAY
C
24V TRANSFORMER
FAN RELAY
FIRST STAGE
HEATING RELAY
SECOND STAGE
HEATING RELAY
Fig. 12. Two-stage heating and cooling wiring diagram.
NOTE: The stage timer energizes the second stage equip-
ment.
69-1360–2
MABS EZ
PANEL
Y2
Y2
Y1
Y1
O
R
R
G
B
G
W1
E
W1
W2
W2
M19044
OUTDOOR CONDENSING UNIT
COMPRESSOR RELAY
COMPRESSOR
RELAY
REVERSING
VALVE
C
24V TRANSFORMER
FAN RELAY
FIRST STAGE
HEATING RELAY
SECOND STAGE
HEATING RELAY
HEAT PUMP CONTROLS
Fig. 13. Heat pump wiring diagram.
IMPORTANT
Y1 must be jumped to W1 for compressor control.
Set DIP switch 8 to On to energize the fan with a call
for heat.
NOTES:
— Fossil Fuel Kits with Heat Pumps: The wiring for
these heat pumps is similar but the manufac-
turer's fossil fuel control must be used. The EZ
equipment terminals are wired using the thermo-
stat terminals shown on the heat pump manufac-
turer's wiring diagrams.
— Two-speed Compressors: For two-speed com-
pressors or two-speed compressors with auxiliary
heat, the EMM-3U or TotalZone panels are rec-
ommended. Call Honeywell Zoning at 800-828-
8367 for assistance.
6
MABS EZ
PANEL
Y
Y2
Y1
O
O
R
R
G
B
G
W1
E
E
W2
W2
DIP SWITCH
CONFIGURATION
NO. 8 - ON
2 STAGE
EM. HT.
M19045A