Application Steps; Overview - Honeywell T7350 System Engineering

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
value will be used in the T7350H as the primary controlled
variable. The local space temperature sensor of the
T7350H is ignored until the network sensor fails.
Source
T7350H.nvoSpaceTemp
or XL10.nvoSpaceTemp
• Space Humidity Sharing:
If a valid humidity value is received at the T7350H Space
Humidity network variable input, that value will be used in
the T7350H as the humidity control variable. The local
space humidity sensor of the T7350H is ignored until the
network sensor fails.
Source
T7350H.nvoSpaceRH
• Current Setpoint Sharing:
If a valid setpoint value is received at T7350H nviSetpoint,
that value will be used by the T7350H as the center
setpoint. The heat and cool setpoints are then calculated
from this value and are used in the T7350H as the
occupied setpoints. During unoccupied periods,
nviSetpoint is ignored.
Source
T7350H.nvoEffectSetpt
or XL10.nvoEffectSetpt
• Occupancy Sensor Sharing:
If a valid value is received at the T7350H occupancy
sensor network variable input, that value will be used in the
T7350H as the occupancy sensor. The local T7350H
occupancy sensor is ignored until the network sensor fails.
Source
T7350H.nvoOccSensor
or XL10.nvoSensorOcc
NetworkSensor
NOTE: The occupancy or motion sensor is active whenever
the device is scheduled "Occupied" and a remote or
network occupancy sensor is configured.
The T7350H effective occupancy is determined in Table 6.
Table 6. T7350H Effective Occupancy.
Schedule Occupancy/Motion
Occupancy Sensor Contact
Occupied Open
Occupied Closed
Standby NA
Unoccupied NA
63-4368
Destination
T7350H.nviSpaceTemp
Destination
T7350H.nviSpaceRH
or XL15c.nviRARH
Destination
T7350H.nviSetpoint
Destination
T7350H.nviOccSensor
Effective
Occupancy
Standby
Occupied
Standby
Unoccupied
• Occupancy Bypass:
Any internal or external scheduled unoccupied state in the
T7350H is overridden by a network occupancy bypass
command. Bypass is a method to command unoccupied
override over the network from another controller (typically
a T7350H or XL10). The source controller manages the
bypass timing.
Source
T7350H.nvoBypass
or
XL10.nvoBypass
XL15a.nvoBypass[i]
XL15c.nvoBypass[i]
• Manual occupancy:
Provides a method to command the occupancy state from
a network workstation. Effective occupancy override works
on a "last in wins" basis. That is, the last occupancy
override command received from any source determines
the override state. The workstation can command
occupied, unoccupied, standby, bypass, or not active (null).
There are several ways to return the device to normal
schedule operation.
1. Power failure reset at the T7350H.
2. Workstation issues a "not active" (null) network com-
mand to T7350H.nviOccManCmd.
3. User activates "Temporary Occupied" button on the
local keyboard. This can be followed by a "Run Sched-
ule" local command.
4. If manual occupancy is commanded to bypass and the
bypass timer times out.
Source
Workstation
Command Display
XL15b

APPLICATION STEPS

Overview

The application steps shown in Table
configuring the T7350H in a L
explain the network role of the T7350H.
Table 7. Application Steps.
Step
1 Plan the system.
2 Determine required network devices.
3 Lay out communications and power wiring.
4 Prepare wiring diagrams.
5 Order equipment.
6 Configure T7350.
7 Troubleshooting.
10
Destination
T7350H.nviBypass
Destination
T7350H.nviOccManCmd
7 are guidelines for
ORKS ®
W Bus network and
ON
Description