ZEC510-2 controller - VAV with incremental reheat control wiring example - Verasys - Field Device - ZEC510

Verasys ZEC510 VAV Controllers Installation Guide

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Installation Guide
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Figure 1. ZEC510-2 - flow diagrams

Figure 2. ZEC510-2 - wiring diagram

Table 1. ZEC510-2 wiring diagram
Number Description Name on the Verasys user interface Terminal label Object name Signal type
1 24 V HOT power transformer n/a
2 24 V COM power transformer
3 Optional. Heating percent command

Terminations for 2-way or 3-way coil - A valve configurations. CCW to open

HEATING STAGE OUTPUT OUT1 HTG-O 24 VAC Position Adjust Output (Floating)
4 Optional. Heating percent command

Terminations for 3-way coil - B valve configuration. CCW to close

HEATING STAGE OUTPUT OUT2 HTG-O 24 VAC Position Adjust Output (Floating)
5 Optional. Supply fan command SUPPLY FAN COMMAND OUT3 SF-C 24 VAC on/off, internally sourced
6 Optional. Supplemental heating percent command. CCW to open SUPPLEMENTAL HEATING OUTPUT OUT4, OUT5 SUPHTG-O 24 VAC Position Adjust Output (Floating)
7 Pressure ports. No polarity n/a
8 Manual override
9 Optional. Supply air temperature sensor TE-631GV-2. SUPPLY AIR TEMPERATURE IN3 SA-T Nickel 1K RTD
10 Optional. Relay: RIBU1C OCCUPANCY STATUS IN2 OCC-S Dry Contact, Normally Open

Normally Closed is configurable through the interface

11 Occupancy sensor OLS-2100-1. To red wire occupancy switch
12 Occupancy sensor OLS-2100-1. To neutral occupancy switch
13 Optional. Discharge air temperature sensor TE-631GV-2. DISCHARGE AIR TEMPERATURE IN1 DA-T Nickel 1K RTD
14 To next device n/a
15 From last device
16 See riser schedule to determine the EOL device. You must set the EOL switch to the ON position on the EOL device.
17 Zone temperature sensor NSB8BTN240-0. The connector is located on the back of the sensor. ZONE TEMPERATURE SENSOR BUS ZN-T SA bus
18 Optional. Zone CO2 sensor NS-BCN7004-0. The connector is located on the back of the sensor. ZONE AIR QUALITY or ZONE CO2 SENSOR BUS ZN-CO2
  • Both heating valves use the 60-second incremental actuator factory default value. You can adjust this in Verasys.
  • You can average up to five NS sensors. Connect the NS sensors in a daisy-chain configuration using the addresses in the Configuring the NS sensors section. The fifth sensor must have the fixed address 199.
  • If you install CO2 Net sensors, in addition to the 24 VAC power for the controller, you must also supply 24 VAC power the HOT and COM terminals.

Piping details for valve configurations

See the valve schedule for the specific configuration.

Figure 3. Piping details