Network Control Provided; Models; Products Covered - Honeywell T7350 System Engineering

Network Control Provided

The T7350H communicates with other network devices, or
nodes, for sharing data such as local inputs. Through the
network, a Command Display (S7760) is used to view or
modify T7350H operational modes including:
• Weekly Schedule.
• Holiday Schedule.
• Room Temperature SetPoints (Occupied, Unoccupied,
Standby).
• Manual Occupancy Override.
• Temperature Setpoints.
• Update Time Clock.
Network connected Workstations and Configuration Tools are
used to view and modify additional T7350 operational modes:
• Command Fan operating mode (On, Auto)
• Command Application mode (Auto, Off, Heating, Cooling)
By using network messaging, the T7350H may share the
following local inputs with other T7350, T7300/Q7300, XL15
or XL10 network connected devices:
• Room Humidity and Temperature.
• Outdoor Air Temperature.
• Occupancy Sensor.
• Unoccupied Bypass User Input.
Network messaging also supports distribution of local user
commands and operational states from a single T7350H. That
is, network connected T7350H and XL10 devices can be
configured to follow the local user commands and states from
a single (master) T7350H. These local T7350 commands
include the following:
• Application mode (Auto, Off, Heating, Cooling).
• Occupancy (Occupied, Unoccupied, Bypass, Standby).
• Bypass (unoccupied override).
• Setpoint.
• Time synchronization from a T7350H designated as
network master clock.
• Master Time Scheduling of Occupied, Unoccupied and
Standby states.

MODELS

Table 1. T7350 Communicating Thermostat Models.
Model Applications
T7350H1009 Conventional
or
Heat Pump
T7350H1017 Modulating
a
All models are down-selectable and can be configured to
control fewer stages than the maximum allowed.
b
Heat pump applications for these models have a maximum
of two heat stages and two cool stages.
c
One extra stage (of either heat or cool) can be configured
using the auxiliary relay.
Maximum
a
Stages
Heat Cool Features
Humidity, Occupancy,
b b
3 (2) 3 (4)
Outdoor, Discharge Air
Capability
c Humidity, Occupancy,
2 modulating, 2
Outdoor, Discharge Air
relay
Capability, 4-20 mA
output (2-10 Vdc with
500 ohm resistor)
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

Products Covered

This System Engineering manual describes how to apply the
T7350H Communicating Thermostat and related accessories
to typical applications. Devices include:
• T7350H Commercial Communicating Thermostat.
• Excel 15 W7760A or B Building Manager.
• Excel 15 W7760C Plant Manager.
• Excel 10 Controllers including: W7750, W7751, W7752,
W7753, W7762.
Other products:
• Q7760A Serial LonTalk
• Q7740A,B FTT Repeaters.
• 209541B FTT Termination Module.
See Table 2 for additional products.
Table 2. Additional Products.
Part Number
R8242A
AT72D, AT88A ...
T7770A-D
T7771
4074EYD
AK3798
AK3797
AK3799
3
®
Adapter.
Product
Description Comments
Contactor, 24 Vac
coil, DPDT.
24vac
Transformers.
Wall Modules
Wall Module with
active display.
Wallplate for For covering an
T7770 Wall existing hole in
Modules. a wall
Single pair network
cable, U.L. Type
CMR
Single pair network
cable plenum
rated, U.L. Type
CMP
Double pair
network cable
plenum rated, U.L.
Type CMP
63-4368