Procedure
- Terminate the ZEC wiring according to Figure 3. Terminate the BYP wiring according to Figure 1.
- Wire the zone sensor to the ZEC’s Sensor Bus.
- Wire the Zone Bus in a daisy chain.
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Ensure that the controller’s device address DIP switches are set to the
appropriate device address. (See Setup and adjustments). Also, activate
the end-of-line (EOL) switch if necessary.
Important: Maintain proper polarity and voltage or current ratings. Improper polarity or exceeding the voltage or current ratings voids the warranty.
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Connect the controller to 24 VAC, Class 2 power.
Figure 1. ZEC310 flow diagram
Table 1. ZEC310 flow diagram Callout
Description
1
Supply air from rooftop unit
2
Proportional water or Silicon Controller Rectifier (SCR) or 1 stage
3
Optional supplemental heating 1 command
4
Second damper is not required but an output is available to drive a second zone damper
Figure 2. BYP200 flow diagram
Figure 3. ZEC310-0 wiring diagram
Table 2. ZEC310-0 controller wiring diagram Callout
Description
Object name
Johnson Controls part number
Required or optional
1
Supplemental heating output
SUPHTG-O
n/a
Optional: Used if a 0 VDC to 10 VDC supplemental heat source is being controlled.
2
Manual override
n/a
n/a
n/a
3
Dip switch
ZN-T (If the hardwired sensors are selected)
TE-68NT-1N00S
Required: ZN-T can either come from hardwired sensor or network sensor
4
Temp occ button
5
Setpoint
6
Sensor
7
Occupancy sensor OLS-2100-1. To red wire occupancy switch
OCC-S
OLS-2100-1
Optional
8
Occupancy sensor OLS-2100-1. To neutral occupancy switch
9
To next device. See riser detail for zone bus wiring.
n/a
n/a
n/a
10
From last device. See riser detail for zone bus wiring.
n/a
n/a
n/a
11
See riser schedule to determine the EOL device.
n/a
n/a
n/a
12
-
Zone sensor (If netstat is selected)
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You can average up to five NS sensors. Connect the NS sensors in a daisy-chain configuration using the addresses in the section. The fifth sensor must have the fixed address 199.
ZN-T
NSB8BTN240-0
Required: ZN-T can either come from hardwired sensor or network sensor
13
-
Optional. Zone sensor
-
The connector is located on the back of sensor.
ZN-CO2
NS-BCN7004-0
Optional
14
24V Com
15
24V Hot
16
24V Hot
n/a
n/a
n/a
17
24V Com
n/a
n/a
n/a
18
Supplemental heating stage 1
SUPHTG1-C
n/a
Optional: Use this output to control on/off supplemental heating.
19
Box heating stage 1
HTG1-C
n/a
Optional: Use this output to control staged box heating.
20
Supplemental pulse output
SUPHTG-PWM
n/a
Optional: Use this output to control pulse-width modulation (PWM) supplemental heating
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