
DCN: 141-00240-02 7/03
7
SW1-1 TEST MODE
OFF = NORMAL OPERATION
ON = TEST MODE- ALL DELAYS CANCELED
1
1
SW1-2 FAN MODE SELECT
OFF = Gas Systems. NO fan w/heat
ON = Electric Systems. Fan w/heat
2
2
DAMPERS
FUSE
2 ZONE HVAC CONTROLLER
MODEL: ZC2S
PN: 001-00240
ZC2S REV E
NORMAL1
STD FAN 2
EQ OFF 3
4
5
6
TEST MODE
F/HEAT
ERT1
ERT2
HRT1
HRT2
SW1
OFF - ON
2AG
2A
STATUS LED
1 FLASH = OK
2 FLASH = EQ ON
3 FLASH = SCP ON
ZONE1
ZONE2
FAN
HEAT
COMP
•
For Standard Thermostats
•
For Standard HVAC Systems
•
One Stage Heat, One Stage Cool
•
Thermal Equalizer
Feature
WIRING DIAGRAM
Standard
Thermostats
Motorized Dampers
Normally Open
24VAC
Two Position
Spring Return
SW1 DIP SWITCH SETTINGS
REV E
RCS
OPTIONAL
POWER TO
STATS
24V C
24V R
FAN G
HEAT W
COMP Y
24V C
24V R
FAN G
HEAT W
COMP Y
ZONE 1
ZONE2
24V C
24V R
FAN G
HEAT W
COMP Y
75
24V C
24V R
FAN G
HEAT W
COMP Y
75
24V COM
R 24V
G FAN
W HEAT
Y COMP
HVAC SYSTEM
C 24V COM
R 24V
G FAN
W HEAT
Y COMP
Standard
HVAC System
Outdoor
Compressor
C
Y
RESET
STATUS LED:
The status LED shows normal operation by flashing slowly. If the Status LED is not flashing, check power/fuse.
Two flashes indicate that the Equalizer run cycle is on. Three flashes indicate that the Short cycle protection is on.
SHORT CYCLE PROTECTION (SCP) DELAY.
The control unit protects the compressor from short cycling by a 5 minute delay at
the end of every compressor “run” cycle. The Status LED will flash rapidly three times to indicate SCP delay is active.
Zone 1
Com
Zone 2
Com
SW1- 3 & 4 EQUALIZER MODE SELECTION
Equalizer OFF
Equalizer Run Time = 6 Min
Equalizer Run Time = 8 Min
Equalizer Run Time = 10 Min
3
4
3
4
3
4
3
4
SW1-5 & 6 HEAT RUN TIME SELECTION
Heat Run Time = 8 Min
Heat Run Time = 12 Min
Heat Run Time = 16 Min
Heat Run Time = 20 Min
5
6
5
6
5
6
5
6
Note: There is a 2 Min Minimum
Heat Run Time (MHRT). If the
Heat Call is terminated during this
period, no Equalizer cycle will be
started at the end of the call. If
the Heat Call last longer than the
MHRT, but less than 8 Min, then
an Equalizer cycle will be started
at the end of the call.
Dipswitch Settings: