Overview of Primary Product
Table Of Contents
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The panel has built-in timers that
insure reliable operation.
When a call is activated the panel will
run the system in that mode for a
minimum of 2 minutes.
When the system is satisfied the panel
will not resume the same call for a
minimum of 2 minutes.
A built-in timer prevents the system
from rapidly switching between
heating and cooling. At the end of a
call, a five or 10 minute timer is started
and the panel will not switch to the
opposing system until the time out is
complete.
Built-In Timer
Settings
Minimum Run
Timer
Short Cycle
Timer
Changeover
Timer
Short Cycle Timer
Minimum Call Timer
Changeover Timer
Opposing System
Service Timer
Second Stage
Timer
2 minutes, fixed
2 minutes, fixed
5 to10 minutes
adjustable
Off to 60 minutes,
adjustable
5 to 35 minutes
adjustable
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 FAX 732-635-8646 E-Mail- info@ewccontrols.com
5
All wiring should be done to local and national codes and
ordinances. Use color-coded, multi-conductor wire. Wire
number to number or letter to letter on each control.
WARNING: THESE PANELS ARE DESIGNED FOR USE WITH
24VAC. DO NOT USE OTHER VOLTAGES! USE CAUTION TO
AVOID ELECTRIC SHOCK OR EQUIPMENT DAMAGE.
Practically any single or two-stage
heat/cool or heat pump thermostat
can be used in Zone1. Typical Zone 1
thermostat installations are shown in
Fig. 3 & 4 & 5.
Practically any single or two-stage
heat/cool thermostat can be used in
Zones 2 through 29. Typical Zone 2-29
thermostat installations are shown in
Fig. 6 and 7.
Be sure to set the O/B
DIP switch to
correspond with the
O/B output of the
thermostat.
Figure 3. Typical single-stage heat-
Figure 6. Typical single-stage heat-
Figure 4. Typical two-stage heat-cool
Figure 5. Typical heat pump
cool thermostat
cool thermostat
thermostat wiring.
thermostat wiring.
Thermostat
Wiring for
Zone1
Thermostat
Wiring for
Zone 2 thru 29
INSTALLATION INSTRUCTIONS
6
0
6
0
7
0
7
0
80
80
50
50
50
50
60
60
70
70
80
80
G
G
Y
Y
W
W
R
R
W2 Y2 G Y1W1 C R
ZONE THERMOSTAT
ZONE THERMOSTAT
ZONE THERMOSTAT
ZONE THERMOSTAT
TSTAT 1
Y2
EM
G
Y1
O/B
C
R
W2
W1
TSTAT 2
Y2
G
Y1
C
R
W2
W1
TSTAT 1
Y2
EM
G
Y1
O/B
C
R
W2
W1
TSTAT 1
Y2
EM
G
Y1
O/B
C
R
W2
W1
G B Y1 C ROEMY2W2W1
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NOTE: All thermostats must
have subbases!