Zonex System 2000, Design & Installation Manual

Page: 46 / 48

44
WIRING A STAND ALONE DAMPER
SLAVING MULTIPLE DAMPERS
PROPER BYPASS INSTALLATION WITH ECONOMIZER
Y
R
C
RO
MC
RC
W
2
R
d
B
WY
G
W
2
W
W
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
TO THERMOSTAT:
Wires used vary per application
FIVE
WIRE LINK TO
SWITCHING
CENTER
or
CONTROLLER
DAMPER #1
TB1
TB2
DAMPER #2
TB1 TB2
DAMPER #3
TB1
TB2
SPDT
RELAY
24 Volt
Transformer
DAMPER
MOTOR
#1
Size Transformer
12VA Per Spring Return Damper
and 6VA Per Power Open /
Power Close Damper
To
Additional
Dampers
NC
No connection
(- - - -) For power open / power close dampers only
Y
R
C
RO
MC
RC
W
2
R
d
B
WY
G
W
2
W
W
Y R C W W
2
Y
R
C
RO
MC
RC
W
2
R
d
B
WY
G
W
2
W
W
Damper Relay
Board
Damper Relay
Board
Damper Relay
Board
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
For Controller Transformer. (Transformer
connected to TR1 and TR2 of the Central
Controller) add 6VA for each relay used.
1
1
LINE
VOLTAGE
24 V
R
HEATING/COOLING AUTO CHANGE OVER WITH DUCT STAT
Mechanical
Room Stat
Duct Stat set at
65 degrees
R W Y
Y W
HEATING/COOLING AUTO CHANGE OVER WITH RELAY
PARALLEL THE RELAY WITH GAS
VALVE W WIRE ON HEATER
W
Y
R
LINE
VOLTAGE
24 V.
STAT
B
W
Y
G
R
d
W
Y
R
C
RO
MC
RC
TB2 TB1
DAMPER
RELAY
BOARD
W
2
W
2
B
W
Y
G
R
d
W
Y
R
C
RO
MC
RC
TB2
TB1
DAMPER
RELAY
BOARD
W
2
W
2
C
C
*
*
*
"C" Terminal used for electronic thermostats
COOLING ONLY DAMPER
Y
R
STAT
LINE
VOLTAGE
24 V.
B
WY
G
R
d
W
Y
R
C
RO
MC
RC
TB2 TB1
DAMPER
RELAY
BOARD
W
2
W
2
C
*
W
When no system controller is used, use Zonex Systems’s Digital, Auto
Changeover Stand Alone Modulating Thermostat (SAMOD) in con-
junction with an ST Series round or rectangular damper.
Listed below are some non-modulating solutions to stand alone
applications if it is not possible to use a SAMOD.
Each zone thermostat can control more than one damper. To determine when to use this application drawing, refer to Slaving Zone Dampers section
on page 23.
When sizing a bypass damper, compute the
system total air volume at 400 CFM/Ton and
subtract the CFM of the smallest zone. The
balance of the air can be bypassed at any one
time. Refer to the Round and Rectangular
damper CFM Charts. Choose the bypass
closest to your CFM to bypass. 1. Outside Air Intake
2. Mixing Damper for Outside Air &
Return Air
3. Pressure Relief of Outside Air
from Building
4. Barometric Damper to Prevent
Return Air Pressurization
5. Modulating Bypass Damper