Honeywell T7350 User Manual
T7350
Commercial Programmable Thermostat
SYSTEM ENGINEERING
Contents
Introduction .................................................................................................................................. 2
Device Description .............................................................................................. 2
Control Application .............................................................................................. 2
Network Control Provided ................................................................................... 3
Models .................................................................................................................................. 3
Abbreviations and Definitions .................................................................................................................................. 4
Network Configurations .................................................................................................................................. 9
Application Steps .................................................................................................................................. 10
Appendix A - Network Tools & Workstations ......................................................................................................................... 20
Appendix B - Network Alarm Reporting .................................................................................................................................. 21
Appendix C - Network Error Reporting ................................................................................................................................... 23
Products Covered ................................................................................................ 3
Applicable Literature ............................................................................................ 4
Performance Specifications ................................................................................. 5
Communications .................................................................................................. 7
L
ONMARK
Overview ............................................................................................................. 10
Step 1. Plan the System ...................................................................................... 11
Step 2. Determine Required Network Devices .................................................... 11
Step 3. Layout Communications and Power Wiring: .......................................... 11
L
ONWORKS
Cable Termination ............................................................................................... 12
Wiring Details ...................................................................................................... 12
Step 4. Prepare Wiring Diagrams ........................................................................ 12
General Considerations ....................................................................................... 15
Step 5. Order Equipment ..................................................................................... 17
Step 6. Configure T7350 ..................................................................................... 17
Step 7. Troubleshooting ....................................................................................... 18
®
Functional Profile .............................................................................. 8
®
Bus Layout ...................................................................................... 11
Appendix D - Network Access to Local Sensor Data ............................................................................................................. 25
Appendix E - Scheduling Network Devices ............................................................................................................................ 25
Appendix F - Network Master Clock ........................................................................................................................................ 25
Appendix G - Network Connections to Other LCBS Devices ................................................................................................ 26
Appendix H - T7350H Network Variable Summary ................................................................................................................. 34
® U.S. Registered Trademark
© 2004 Honeywell International Inc.
All Rights Reserved
63-4368
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
INTRODUCTION
Device Description
The T7350H is a LONMARK® certified thermostat that provides
networking capability in a L
ONWORKS
transformer-coupled Free Topology Transceiver (FTT). See
Fig. 1.
The T7350H communicates with many L
including the following:
— Other T7350H Communicating Commercial Thermostat
devices.
— T7300F/Q7300H Commercial Thermostat/Communicating
Subbase.
— Excel 15 S7760A Command Display.
— Excel 10 W7750A,B,C Constant Volume Air Handler Unit
(CVAHU) Controller.
— Excel 15 W7760A, B, C Building & Plant Managers.
— Excel 10 W7751B, D, F, H, J Variable Air Volume Terminal
Unit Controllers.
— Excel 10 W7752D, E, F, G Fan Coil Unitcontrollers.
— Excel 10 W7753A Unit Ventilator Controller.
— Excel 10 W7762A,B Hydronic Controllers.
— Excel 10 W7763C, D, E Chilled Ceiling Controllers.
NOTEBOOK PC
®
system using a
ONMARK
RS-232
SERIAL
PORT
SLTA
®
devices
BUILDING MANAGER
1481216
EXCEL 15
W7760
30 31
17 23
37
Control Application
The T7350H programmable communicating Thermostat
controls commercial single zone heating, ventilating and air
conditioning (HVAC) equipment through staged and
modulating outputs. The T7350H consists of a two piece
assembly with a thermostat cover and subbase. The
thermostat cover includes the keypad and display for 7-day
programming. Calendar programming is available through a
direct connect PDA (Configuration Tool) or network
(L
ONSPEC™ with model T7350H) tool configuration. The
subbase includes equipment control, inputs and network
connections. The subbase mounts on the wall and the
thermostat cover mounts to the subbase. In addition, the
T7350H model can communicate local sensor data, schedule
information, master clock operations and accept configuration
and override instructions to or from other devices/tools in a
L
ONWORKS
application in a three-stage heat and two-stage cool heat
pump system. For additional hookups, see Fig. 10 through 12.
44
S7760
®
network. Fig. 9 shows a typical T7350H
WALL MODULE
EXCEL 10
CVAHU
LonWorks BUS
T7350H
MODEM
Select
Back
MODEM
BUILDING MANAGER
1481216
RS-232
SERIAL
PORT
SLTA
EXCEL 15
W7760
17 23
30 31
44
37
S7760
Select
Back
EXCEL 10
CVAHU
LonWorks BUS
Fig. 1. Typical T7350H LONWORKS® network diagram.
WALL MODULE
T7350H
M22490
63-4368 2
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
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.
Maximum
a
Stages
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.
3 (2)b3 (4)
2 modulating, 2
relay
b
c
FeaturesHeat Cool
Humidity, Occupancy,
Outdoor, Discharge Air
Capability
Humidity, Occupancy,
Outdoor, Discharge Air
Capability, 4-20 mA
output (2-10 Vdc with
500 ohm resistor)
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 Contactor, 24 Vac
AT72D, AT88A … 24vac
T7770A-D Wall Modules
T7771 Wall Module with
4074EYD Wallplate for
AK3798 Single pair network
AK3797 Single pair network
AK3799 Double pair
®
Adapter.
Product
Description Comments
coil, DPDT.
Transformers.
active display.
For covering an
T7770 Wall
Modules.
cable, U.L. Type
CMR
cable plenum
rated, U.L. Type
CMP
network cable
plenum rated, U.L.
Typ e CMP
existing hole in
a wall
3 63-4368
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
Applicable Literature
The following list of documents contains general information
related to the T7350H Communicating Commercial
Thermostats.
Table 3. Applicable Literature
Form No. Title
63-1299 T7350 Commercial Programmable
Thermostat Spec Data
62-0195 T7350 Commercial Programmable
Thermostat Installation Instructions
63-2605 T7350 Commercial Programmable
Thermostat Product Data
74-2976 Excel L
ONSPEC™ ZL7760A Specification
Data
74-2937 Excel LONSPEC™ ZL7760A User’s Guide
74-3123 Light Commercial Building Solution System
Communication Guide
74-2697 T7770A, B, C, D, E, F, G Wall Module
Specification Data
95-7538 T7770A, B, C, D, E, F, G Wall Module
Installation Instructions
63-2617 T7771 Wall Module Product Data
74-2972 S7760A Command Display Specification
Data.
74-2858 Q7740A,B FTT Repeater Specification
Data.
95-7555 Q7740A,B FTT Repeater Installation
Instructions.
®
74-2954 Q7760A SLTA-10 Serial LonTalk
Adapter
Specification Data.
®
95-7511 Q7760A SLTA-10 Serial LonTalk
Adapter
Installation Instructions.
95-7554 209541B Termination Module Installation
Instructions
ABBREVIATIONS AND DEFINITIONS
Application—A special use Building Control function.
Binding—The process of logically connecting network
variables in one node to network variable(s) in other node(s).
Binding is performed by a network management Tool (such as
L
ONSPEC™) that writes the binding information into the
EEPROM memory of all the neuron’s involved. The binding
information is saved in the network image of each neuron.
Building Manager—A LONMARK® certified device that can be
used to monitor and control HVAC equipment and other
miscellaneous loads in a distributed network.
Command Display—A device that can be used to monitor
data and change parameters of network connected devices.
CVAHU—Excel 10 Constant Volume Air Handler Unit
Controller.
Excel 10s—A family of application - specific HVAC controllers
such as the Excel 10 CVAHU and Excel 10 VAV.
HVAC—Heating, Ventilating and Air Conditioning.
I/O—Input/Output.
LCBS—Light Commercial Building Solution. These systems
are configured with the L
monitored with a Workstation such as LonStation
ONSPEC™ network tool and
®. Many
LCBS networks include the W7760B & C plant managers.
Routers (including Q7751A) are not supported by the LCBS
network configuration L
ONSPEC™-ZL7760A—A network connected tool which
L
ONSPEC™ tool.
configures, commissions, calibrates and monitors the
Honeywell Light Commercial Building Solution Q7300,
T7350H, Excel 10 and Excel 15 family of controllers.
L
ONSTATIO N™—A low-cost, easy-to-use Light Commercial
Building Solution workstation that provides advanced building
control capabilities for small to medium-size buildings.
ONWORKS
L
communicating with each other using the LonTalk
®
Network—A data network based on neurons
®
protocol.
Mandatory Mechanisms/Objects/Network Variables—
Mandatory mechanisms and network variables that are
implemented in all the Excel 10 devices.
NamedObjects—These objects are visible on the network as
functional independent entities and are accessed by name.
Typical examples of NamedObjects are Controllers,
ControlLoops and LogicFunction blocks contained in devices
such as the XL5a or XL15b.
Network Management Node—A L
ONWORKS
®
node that is
responsible for configuring the network, installing the nodes,
binding the network variables between nodes, and general
network diagnostics.
63-4368 4
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
Network Variables—A class of variables defined in Neuron C
that allows communication over the L
ONWORKS
®
network to
other nodes on the network. An output network variable in one
node can be bound to a corresponding input network
variable(s) in other node(s). Changing the value of the output
network variable in one node causes the new value to be
automatically communicated to the bound input network
variable(s) in other node(s). When an input network variable is
updated, a nv_update_occurs and the event is posted at the
receiving node(s) so that the application program can take
action based on the change. A network management node
(for example XL15A or XL15C) that explicitly reads and/or
writes the network variable can also poll network variables.
Network variables can contain one data field (one or two
bytes) or multiple data fields (a structure).
Neuron—Refers to the Echelon
implements the L
ONWORKS
®
semiconductor device which
®
protocol on a network connected
device such as the T7350H Honeywell controller.
Node—A device implementing layers one through six of the
LonTalk
®
protocol including a Neuron® Chip, transceiver,
memory, and support hardware.
Notebook PC—Portable personal computer.
PDA—Personal Digital Assistant. In the case of the T7350
product this is a hand held electronic device operating with the
Palm OS. A Honeywell provided PDA application program is
used to configure the T7350 thermostat using a direct RS232
connection. Before purchasing a PDA, check the latest
Configuration software release note for a list of qualified PDA
models. Network connected T7350H models can be
configured without a PDA using L
ONSPEC™.
Programmable Controller—A controller that has a variable
number of control loops of different types and is user
programmed to execute an application. The user can select
the number and type of control loops. The user also has the
capability of generating new types of control loops. Some
examples of Honeywell programmable controllers include the
XL15A and XL15B.
Recovery Mode or Recovery Period—The time in
unoccupied periods when the temperature control is adjusting
the control setpoint so that the space temperature reaches the
occupied setpoint when the schedule change occurs.
RIO—Excel 10 Remote Input/Output device.
RTC—Real Time Clock.
Schedule—The structure that defines the occupancy states
and the time of the changes between these states. In the case
of the T7350, schedules are organized around a eight day
weekly structure including an extra day for designated
holidays. Holidays are scheduled by yearly calendar events.
SGPU—Significant Event Notification and Guaranteed
Periodic Update.
SGPUC—Significant Event Notification and Guaranteed
Periodic Update with Change Field.
SLTA—Serial LonTalk
coupled LonTalk
®
Adapter. Adapts the transformer
®
messages to the RS-232 Serial Port.
SNVT—Standard Network Variable Type.
SCPT—Standard Configuration Parameter Type.
XL15A—W7760A Honeywell building level controller.
XL15B—W7760B Honeywell building level controller.
XL15C—W7760C Honeywell plant level controller.
Performance Specifications
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit might not exactly match listed specifications.
This product is tested and calibrated under closely
controlled conditions; minor performance differences
can be expected if those conditions are changed.
Models: See Table 4.
Dimensions: See Fig. 2.
Finish (color): Trident White.
Batteries: No batteries required.
Table 4. T7350 Thermostat Features.
a
b
Humidity, Occupancy,
Outdoor, Discharge Air Capability
Features
Model Applications
T7350H1009 Conventional
or
Maximum Stages
b
3 (2)
3 (4)
Heat Pump
T7350H1017 Modulating
2 modulating, 2
c
Humidity, Occupancy,
relay
Outdoor, Discharge Air Capability,
4-20 mA output (2-10 Vdc with 500 ohm resistor)
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.
5 63-4368
Auxiliary
Relay
Isolated
Normally
Open
ONWORKS®
L
Capability?Heat Cool
Yes
Yes
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
Mounting Means:
Mounts on subbase.
Subbase Mounts On:
Wall: Using two 5/8 in. long #6-32 screws (included).
Outlet Box: Using sheet metal screws.
Throttling Range for Modulating Outputs:
Automatically adjusts based on heat/cool stages. Manually
adjustable with PDA.
Clock Accuracy (at 77°F [25°C]): ±1 min./month (30 days).
Minimum Stage Operation Time (fixed):
Minimum On
Heat: 1 minutes.
Cool: 3 minutes.
Minimum Off (Cool and Heat Pump): 1 minute.
Electrical Ratings:
Power: 24 Vac, 50/60 Hz.; 20 to 30 Vac, 50/60 Hz.
Input:
Temperature: 20K ohms.
Humidity: 0-10 Vdc.
Outdoor: 3000 PTC.
Discharge Air: 20K ohms.
Occupancy Sensor: Dry contact switching 30 Vdc at 1 mA.
All Relay Outputs (at 30 Vac):
Running: 1.5A maximum.
Inrush: 7.5A maximum.
Modulating Output: 4 to 20 mA with 510 ohm maximum
terminating resistance.
System Current Draw (without load):
5 VA maximum at 30 Vac, 50/60 Hz.
NOTE: Relays are N.O. Single-Pole, Single-Throw (SPST).
Outdoor Sensor Wiring: Requires 18 gauge wire.
Humidity Ratings: 5% to 90% RH, noncondensing.
Emergency Heat Indication:
Display indicates when Emergency Heat is activated (Em).
Temperature:
Ratings:
Operating Ambient: 30°F to 110°F (-1°C to 43°C).
Shipping: -30°F to +150°F (-34°C to +66°C).
Display Accuracy: ±1°F (±1°C).
Setpoint:
Range:
Heating: 40°F to 90°F (4°C to 32°C).
Cooling: 45°F to 99°F (7°C to 37°C).
Deadband: 2°F (1°C).
Default Settings: See Table 5.
Loss of Power: The thermostat maintains programmed times
and temperatures for the life of the product. Clock and day
information is retained for a minimum of 48 hours.
NOTE: To achieve the 48-hour power-loss clock retention,
the T7350 must be powered for at least 5 minutes.
Communicating Model T7350H:
Connection Terminals for the L
ONWORKS
®
Bus.
Network jack for quick access by personal computer based
tools.
Communications service-pin pushbutton to simplify startup.
L
ONMARK
ONMARK
L
L
ONMARK
ONMARK
L
Honeywell L
®
Controller.
Functional Profile: 8500_20 Space Comfort
®
SCC Object Type: 8504 Rooftop See Fig. 3.
®
Program Identifier: 80:00:0C:55:04:03:04:2E.
®
Application Interoperability: version 3.3
ONMARK
®
Plug-In file downloads:
http://plugin.ge51.honeywell.de/index.htm#
PDA System Requirements:
Palm OS: 3.5.x to 5.2.1
Dynamic Heap: 256K bytes.
Free RAM Space: 1000K bytes.
Serial Communications: RS232.
Approvals:
European Community Mark (CE) Listed.
UL 873 Recognized, NEC Class 2.
FCC Part 15 subpart J Class A.
cUL.
Table 5. Default Setpoints.
Not
Control Occupied
Occupied Standby
Heating 70°F (21°C) 55°F (13°C) 67°F (19°C)
Cooling 75°F (24°C) 85°F (29°C) 78°F (26°C)
Accessories:
Duct Discharge Air Sensors: C7041B (6 or 12 in.),
C7041C (18 in.), C7041J (12 ft averaging),
C7770A (8 in. probe).
Outdoor Air Sensors: C7089A, C7170A,
C7031G2014 (weatherproof).
Temperature Sensors (Remote): C7772A, T7770A1006,
T7770B1046, T7770C1044, T7770D1000, T7771.
Economizer Logic Modules: W6210, W6215, W7210, W7212,
W7215, W7459.
Humidity Sensors: H7625A,B; H7635A,B,C, H7655B.
PDA Units: Palm™ V, M125, and i705 handhelds;
TRGPro™ handheld; ZIRE™ 71 handheld;
TUNGSTEN™ T handheld.
Others:
209541B FTT network termination module.
209651A Vertical Mounting Hardware Wallplate Adapter
(Trident white).
50000083-001 Thermostat Interface Module (TIM).
50000452-001 Troubleshooting Cable.
AK3797 Single pair network cable plenum rated,
U.L. Type CMP.
AK3798 Single pair network cable, U.L. Type CMR.
AK3799 Double pair network cable plenum rated,
U.L. Type CMP.
Q7740A FTT network 2-way repeater.
Q7740B FTT network 4-way repeater.
TG511, TG512 Universal Versaguard™ Thermostat
guards.
63-4368 6
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
2-3/16 (56)
2-1/32
(52)
2-1/32
(52)
1-9/16
(40)
4-1/16
(104)
M22432
4-1/2
(114)
SUBBASE
1-5/8
(42)
6-3/4 (171)
2-3/8 (60)
3-1/4 (83)
6-9/16 (166)
1-5/8
(42)
Fig. 2. Dimensions of thermostat and subbase in in. (mm).
Communications
The T7350H provides networking capability in a LONWORKS®
system using a Free Topology Transceiver (FTT) transformercoupled communications port running at 78 kilobits per
second (kbs). The transformer-coupled communications
interface offers a much higher degree of common-mode noise
rejection while ensuring dc isolation. L
ONWORKS
networks are very flexible and convenient to install and
maintain, but it is imperative that the network layout be
carefully planned and accurate documentation created and
maintained. This aids in compliance verification and future
expansion of the network. It also minimizes unknown or
inaccurate wire run lengths, node-to-node (device-to-device)
distances, node counts, total wire length, inaccurate repeater/
router locations, and misplaced or missing terminations.
L
ONWORKS
®
networks can be configured in a variety of ways;
refer to the E-Bus FTT Network Wiring Guidelines, form 742865, for a complete description of network topology rules and
maximum network wire length. If longer runs are required, add
a Q7740A 2-way or Q7740B 4-way repeater to extend the
L
ONWORKS
on LCBS L
types for L
®
Bus length. Q7751A routers are not supported
ONSPEC™ configured systems. Approved cable
ONWORKS
®
Bus communications wiring are Level
IV, 22 AWG (0.34 sq mm) plenum or non-plenum rated
unshielded, twisted pair, solid or stranded conductor wire.
Refer to Table 2 for a list of Honeywell network cable part
numbers. Other Echelon® approved cable may also be used.
Run communications wiring in a conduit, if needed, with nonswitched 24 Vac or sensor wiring. The Free Topology
Transceiver (FTT) communications L
ONWORKS
a polarity insensitive, free topology wiring scheme that, in turn,
supports star, loop, and/or bus wiring.
®
FTT
®
Bus supports
7 63-4368
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
LONMARK® Functional Profile
Hardware OutputHardware Output
nviRequest
nv1
SNVT_obj_request
nviTimeSet
nv3
SNVT_ time_stamp
nviFileReq
nv5
SNVT_file_req
nviFilePos
nv7
SNVT_file_pos
nc1 - nciDeviceName
nc2 - nciApplVer
nviInUse
nv9
UNVT_inUse
nviPgm
nv10
UNVT_pgmIn
Node
Object
Mandatory
Network
nvoStatus
nv2
SNVT_ obj_status
Variables
nvoFileStat
nv6
SNVT_file_status
Optional
Network
Variables
Configuration Properties
UCPTdevName
UCPTapplVer
Manufacturer
(manf specific)
(manf specific)
nv11
nv12
nv13
Defined
Section
nv14
nv15
nv16
nv17
nv18
nroT7350Ver
UNVT_version
nroPgmVer
UNVT_pgmId
nvoPgm
UNVT_pgmOut
nvoTime
SNVT_time_stamp
nvoAlarmH
UNVT_alarm
nvoAlarmStatus
UNVT_alarmStatus
nvoAlarmLog
UNVT_alarmLog
nvoError
UNVT_error
nviSpaceTemp
nv1
SNVT_temp_p
nviSetpoint
nv2
SNVT_ temp_p
nviOccSchedule
nv5
SNVT_tod_event
nviOccManCmd
nv6
SNVT_occupancy
nviOccSensor
nv7
SNVT_occupancy
nviApplicMode
nv8
SNVT_hvacMode
nviOutdoorTemp
nv19
SNVT_Temp_p
nviSpaceRH
nv20
SNVT_lev_percent
nc1 - nciSndHrtBt
nc4 - nciRevHrtBt
nc2 - nciSetpoints
nc6 - nciBypassTime
nciConfig
nciConfigPts
nciDayLghtSav
nciDaySchedule0
nciDaySchedule1
nciDaySchedule2
nciDaySchedule3
nciDaySchedule4
nciDaySchedule5
nciDaySchedule6
nciDaySchedule7
nciHolSched
SCC-Rooftop
Object Number 8504.
nvoSpaceTemp
Mandatory
Network
Variables
Optional
Network
Variables
nv26
SNVT_ temp_p
nvoUnitStatus
nv27
SNVT_hvac_status
nvoEffectSetpt
nv28
SNVT_temp_p
nvoEffectOccup
nv29
SNVT_occupancy
nvoHeatCool
nv30
SNVT_hvac_mode
nvoDischAirTemp
nv34
SNVT_temp_p
nvoTerminalLoad
nv37
SNVT_lev_percent
nvoSpaceRH
nv43
SNVT_lev_percent
nvoOutdoorTemp
nv45
SNVT_temp_p
Configuration Properties
SNVT_time_sec
SNVT_time_sec
SNVT_temp_setpt
SNVT_time_min
UCPTconfig
UCPTconfigPts
UCPTdaylightSav
UCPTschedule0
UCPTschedule1
UCPTschedule2
UCPTschedule3
UCPTschedule4
UCPTschedule5
UCPTschedule6
UCPTschedule7
UCPTholSched
(mandatory)
(mandatory)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(manf specific)
(optional)
(optional)
Hardware Input
Fig. 3. T7350H LONMARK® Space Comfort Controller Rooftop Object (8504) with Node Object.
63-4368 8
nviBypass
nv30
SNVT_switch
nviFanAuto
nv31
SNVT_switch
nviManValue
nv32
UNVT_manValue
nviDlcShed
nv34
UNVT_dlcShed
Manufacturer
Defined
Section
Hardware Input
nvoBypass
nv43
SNVT_switch
nvoOccSchedule
nv44
SNVT_tod_event
nvoOccSensor
nv45
SNVT_occupancy
nvoData1
nv46
UNVT_data1
nvoData2
nv47
UNVT_data2
M22431
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
NETWORK CONFIGURATIONS
The T7350H can be configured to perform a variety of
activities in which data is sent to and/or received from other
nodes on the L
ONWORKS
shared with other network devices includes:
— Current year, month, day, hour, minute, second.
— System mode (HEAT, COOL, AUTO, OFF, EM HEAT).
— Current fan setting (ON, AUTO).
— Space temperature.
— Space relative humidity.
— Discharge air temperature.
— Outdoor air temperature.
— Occupancy sensor status.
— Terminal load.
— Current setpoint.
— Occupied/Unoccupied schedule commands.
— Current occupancy status.
— Occupancy schedule including current occupancy state,
next state and time in minutes until next scheduled
change of occupancy state.
— Relay status (heat/cool stages and fan).
— Alarm status.
— Alarm log including the last five alarms.
— Device Error status.
— Bypass state (multiple XL10 devices follow the bypass
operation of a master device).
A network configuration tool is used to configure the T7350H
Thermostats and other nodes with which the T7350H
interacts. The following is a brief description of the
configurable features that can be commanded over the
network:
•Time Master:
When a T7350H is designated as the network time master,
the current time of day and date is synchronized across the
network every minute. The L
Screen can be used to configure a T7350H as the Network
Time Master. Whenever the time of day or date of the time
master is changed, it automatically adjusts all the other
network devices (T7350H, Q7300 & XL15A) bound to the
time master. When a T7350H is controlled by a time
master, the local day light saving schedule is disabled. The
Day Light Saving option on all time master recipients
should be disabled. This prevents erroneous time changes
(local daylight savings switchover) during temporary
network outages.
Source Destination
T7350H.nvoTime
or
XL15a.nvoTimeOut
Q7300.nvoTime
®
network. Information that can be
ONSPEC™ T7350H General
T7350H.nviTimeSet
or
XL15a.nviTimeIn
Q7300.nviTime
the user is not prevented from making local schedule
changes at the recipient thermostat. Local schedule
changes (at a recipient device) have no effect on the
scheduling commands received from the master device.
When a T7350H is designated as a master schedule
device, it sends its schedule information (current state,
next state, time until next change of state) to the
appropriate T7350H(s) which, in turn, overrides any
existing internal time schedule. The T7350H Thermostat
can provide master scheduling information to multiple
Excel 10 devices. One T7350H shares the schedule
information (current state, next state, time until next
change of state) with the designated Excel 10 devices.
Source Destination
T7350H.nvoOccSchedule
or
XL15a.nvoTodEventCmd[i]
Q7300.nvoOccSchedulei
T7350H.nviOccSchedule
or
XL10.nviTodEvent
XL15c.nviTodEventIn[i]
• System Mode Settings:
System mode settings (HEAT, COOL, AUTO, OFF, EM
HEAT) can be commanded by a remote T7350H or other
compatible XL10 device. A one to many network binding
can be used to command multiple devices from a single
unit. In addition, a network connected Workstation can be
used to change the System Mode.
Command Source Command Destination
T7350H.nvoHeatCool
T7350H.nviApplicMode
or Workstation
• Fan Settings:
Fan settings (ON, AUTO) can be changed from a network
connected Workstation.
Source Destination
Workstation
T7350H.nviFanAuto
or Network Tool
• Outdoor Air Temperature Sharing:
If a valid outdoor air temperature value is received at the
T7350H OAT network variable input, that value will be used
in the T7350H. The local OAT sensor of the T7350H is
ignored until the network sensor fails.
Source Destination
T7350H.nviOutdoorTemp
or
XL10.nvoOdTemp
XL15c.nvoOdTemp
T7350H.nvoOutdoorTemp
or
XL10.nviOdTemp
XL15c.nviOdTemp
• Time Schedule:
The occupancy schedule used by a T7350H may reside
locally in that device or remotely in another schedule
device (T7350H, XL15a, XL15b or T7300/Q7300). Local
schedules can be created and modified using the T7350H
keypad, a direct connected PDA, a network connected
configuration tool (L
ONSPEC™) or Command Display.
External schedules can also be modified using the keypad
of the master schedule device, or with a network
connected configuration tool or Workstation. When a
T7350H receives scheduling information over the network,
• Discharge Air Temperature Sharing:
The discharge air temperature value can be shared with
other devices on the network. Note that the T7350H does
not accept a network discharge air temperature input.
Source Destination
T7350H.nvoDischAirTemp XL15c.nviDATemp
• Space Temperature Sharing:
If a valid space temperature value is received at the
T7350H Space Temperature network variable input, that
9 63-4368
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 Destination
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 Destination
T7350H.nvoSpaceRH T7350H.nviSpaceRH
• 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 Destination
T7350H.nvoEffectSetpt
or XL10.nvoEffectSetpt
T7350H.nviSpaceTemp
or XL15c.nviRARH
T7350H.nviSetpoint
• 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 Destination
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 Schedule” local command.
4. If manual occupancy is commanded to bypass and the
bypass timer times out.
T7350H.nviBypass
• 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 Destination
T7350H.nvoOccSensor
or XL10.nvoSensorOcc
NetworkSensor
NOTE: The occupancy or motion sensor is active whenever
The T7350H effective occupancy is determined in Table 6.
Occupied Open Standby
Occupied Closed Occupied
Standby NA Standby
Unoccupied NA Unoccupied
the device is scheduled “Occupied” and a remote or
network occupancy sensor is configured.
Table 6. T7350H Effective Occupancy.
Schedule
Occupancy
Occupancy/Motion
Sensor Contact
T7350H.nviOccSensor
Effective
Occupancy
Source Destination
Workstation
Command Display
XL15b
T7350H.nviOccManCmd
APPLICATION STEPS
Overview
The application steps shown in Table 7 are guidelines for
configuring the T7350H in a L
explain the network role of the T7350H.
Table 7. Application Steps.
Step Description
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.
ONWORKS
®
Bus network and
63-4368 10
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
Refer to the Light Commercial Building Solution System
Communication Guide form 71-3123 and the E-Bus Wiring
Guidelines, form 74-2865 for a complete description of
network topology rules. Prepare Wiring Diagrams, for wiring
details. Plan to configure each controller. Refer to the Excel
L
ONSPEC™ User Guide, form 74-2937, to configure the
T7350H, XL15 and XL10 Controllers.
Step 1. Plan the System
Plan the use of the T7350H Thermostat according to the job
requirements. Determine the location and functionality of each
device. Verify the sales estimate for the number of other
controllers and devices required. Check the number and type
of other required accessories. When planning the system
layout, consider potential expansion possibilities for future
growth. Planning is very important if HVAC systems and
controllers are to be added in future projects.
NOTEBOOK PC
SHIELDED
RS-232
SERIAL
PORT
INTERFACE
CABLE
Q7760
SLTA
CABLE
PART
NO. 205979
LonWorks
BUS PORT
T7350H
Step 2. Determine Required Network Devices
A maximum of 60 nodes can communicate on a single
L
ONWORKS
comprises one node. If more than 60 nodes are needed, a
Q7751A Router or Q7740 Repeater is necessary. A router or
repeater allows up to 120 controller nodes per network,
divided between two L
that routers are not supported by the LCBS L
system configuration tool. Refer to the Light Commercial
Building Solution System Communication Guide form 71-3123
for LCBS details. Refer to the E-Bus Wiring Guidelines, form
74-2865, for a complete description of network topology rules
and maximum wire lengths. A 209541B Termination Module
may be required. Refer to the Excel 10 FTT Termination
Module Installation Instructions form, 95-7554.
®
Bus segment. Each LONWORKS® Bus device
ONWORKS
®
Bus segments. Please note
ONSPEC™
Step 3. Layout Communications and Power Wiring:
L
ONWORKS
The communications LONWORKS® Bus, is a 78-kilobit network
that uses transformer isolation and differential Manchester
encoding. The Free Topology Transceiver (FTT) LONWORKS®
communications Bus supports a polarity insensitive, free
topology wiring scheme, refer to the E-Bus Wiring Guidelines
form, 74-2865, for a complete description of L
network topology rules. Fig. 5 shows T7350H devices
connected in a typical free topology L
®
Bus Layout
ONWORKS
ONWORKS
®
network.
®
M22492
Fig. 4. Connecting personal computer to LonWorks® bus.
NOTEBOOK PC
T7350H
RS-232
SLTA
MODEM
T7350H
MODEM
RS-232
SLTA
T7350H T7350H
LonWorks BUS
MODEM
T7350H T7350H
LonWorks BUS
RS-232
SLTA
T7350H
T7350H
LonWorks BUS
T7350H
T7770
WITH NO
LonWorks
BUS ACCESS
T7770
LonWorks BUS
I/O CONNECTIONS
JACK FOR OPERATOR TERMINAL
Fig. 5. Typical topology for T7350 devices in LONWORKS® network.
11 63-4368
M22493
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
Cable Termination
The FTT network segment requires termination for proper
data transmission performance. Use a 209541B Termination
Module to connect two of the three termination module wires
to the L
ONWORKS
Wiring Guidelines form 74-2865 for details.
®
Bus terminals. Refer to LONWORKS® Bus
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
Singly Terminated Network Segment
In a singly terminated topology segment, only one termination
is required and can be placed anywhere on the segment.
Singly terminated segments use the yellow and brown wires.
If the network topology requires a singly terminated
termination module at a T7350H, connect the singly
terminated module wiring on the appropriate terminals as
shown in Fig. 6.
SUBBASE
BROWN
ORANGE
T5 T6 T7 T4
EB
YELLOW
T3
OSOS ASAS
M
MHC HPHSEB
X
PART NO. 209541B
TERMINATION MODULE
W3/Y4 Y3 W2
AUX
RC
AUXRH
Y2
W1 GY1
M22494
Fig. 6. Singly terminated LonWorks® bus termination
module.
Doubly Terminated Daisy-Chain Network Segment
In a doubly terminated daisy-chained topology segment, two
terminations are required, one at each end of the topology
segment. Doubly terminated segments use the orange and
brown wires. If the network topology requires a doubly
terminated module at a T7350H (T7350H is the first or last
device on the network cable) connect the termination module
wiring on the appropriate terminals as shown in Fig. 7. For
additional wiring information, refer to the E-Bus Wiring
Guidelines, form 74-2865, and the Excel 10 FTT Termination
Module Installation Instructions, form 95-7554.
SUBBASE
T5 T6 T7 T4
T3
OSOS ASAS
W3/Y4 Y3 W2
AUX
Y2
IMPORTANT
All wiring must agree with applicable codes, ordinances and regulations.
1. Loosen subbase terminal screws and connect system
wires.
NOTE: Maximum (and recommended) wire size is 18-
gauge. Do not use wire smaller than 22-gauge. Follow equipment manufacturer wiring instructions
when available. Refer to the Wiring Diagram section
for typical hookups. A letter code is located near
each terminal for identification. Refer to the Specifications section, Tables 8 and 9 for terminal designations.
2. Securely tighten each terminal screw.
3. Push excess wire back into the hole in the wall.
4. Plug the hole with nonflammable insulation to prevent
drafts from affecting the thermostat.
Wiring Details
LONWORKS® network cable should be wired separately from
the power and I/O wires when installing T7350H models. If
this is not possible, use a minimum of 4 in. (102 mm)
separation between split ferrite cores (Fair-Rite 0443164151,
www.fair-rite.com) to ensure compliance with Class B limits
(does not apply to Class A limits). See Fig. 8 to apply ferrite
cores to L
ONWORKS
®
Bus input and output.
Step 4. Prepare Wiring Diagrams
Fig. 9 through 12 show T7350 terminal arrangements and
provide detailed wiring diagrams. Reference these diagrams
to prepare the site-specific job drawings.
1.
WIRES TO T7300H
COMMUNICATING SUBBASE
RC
W1 GY1
AUXRH
M22495
®
bus termination
BROWN
YELLOW
EB
ORANGE
M
PART NO. 209541B
TERMINATION MODULE
Fig. 7. Doubly terminated L
MHC HPHSEB
X
ONWORKS
modules.
63-4368 12
M22496
WIRES TO ALL
INPUTS AND
OUTPUTS
2.
WIRES TO T7300H
COMMUNICATING SUBBASE
Fig. 8. Ferrite core wires from T7350H to L
inputs and outputs.
WIRES TO ALL
INPUTS AND
OUTPUTS
ONWORKS
®
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
DISCHARGE
AIR
SENSOR
OSOS ASAS
MHC HPHSEB
4
ECONOMIZER
X
3
HEAT
RELAY 3
AUX
W3/Y4 Y3 W2
AUXRH
RC
HEAT
RELAY 2
W1 G
Y1
HEAT
RELAY 1
COMPRESSOR
CONTACTOR 1
COMPRESSOR
CONTACTOR 2
Y2
COMPRESSOR
CONTACTOR 3
FAN
RELAY
M22499
LONWORKS
BUS
LONWORKS
BUS
OUTDOOR
123456789
T3
AIR
SENSOR
M
MOTION
SENSOR
T7770 REMOTE SENSOR
SUBBASE
T5 T6 T7 T4
EB
®
®
L2
2
1
L1
(HOT)
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
2
3
HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
4
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
HUMIDITY
SENSOR
Fig. 9. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system with one
transformer.
LONWORKS
BUS
LONWORKS
BUS
2
1
OUTDOOR
T7770 REMOTE SENSOR
SUBBASE
T5 T6 T7 T4
EB
®
®
L2
L1
(HOT)
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.
2
3
HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.
4
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
L2
L1
(HOT)
HUMIDITY
SENSOR
AIR
SENSOR
123456789
T3
M
MOTION
SENSOR
AUXILIARY
TRANSFORMER
DISCHARGE
AIR
SENSOR
OSOS ASAS
MHC HPHSEB
X
HEAT
RELAY 3
AUX
W3/Y4 Y3 W2
AUXRH
RC
3
4
ECONOMIZER
HEAT
RELAY 2
W1 G
Y1
HEAT
RELAY 1
COMPRESSOR
CONTACTOR 1
COMPRESSOR
CONTACTOR 2
Y2
COMPRESSOR
CONTACTOR 3
FAN
RELAY
M22497
Fig. 10. Typical hookup of T7350H1009 with auxiliary transformer.
13 63-4368
T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT
LONWORKS
BUS
LONWORKS
BUS
1
OUTDOOR
123456789
T3
AIR
SENSOR
M
MOTION
SENSOR
DISCHARGE
AIR
SENSOR
OSOS AS AXAS
MHC HPHSEB
RCX
2
MODULATING
HEAT
–
(4-20 mA)
+
AC
AH
W1 G
AUXRH
HEAT
RELAY 1
3
ECONOMIZER
T7770 REMOTE SENSOR
SUBBASE
T5 T6 T7 T4
EB
®
®
L2
L1
(HOT)
HEATING
TRANSFORMER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
2
3
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
HUMIDITY
SENSOR
MODULATING
–
+
R
X
AUX
Y1
FAN
RELAY
COMPRESSOR
CONTACTOR 1
(4-20 mA)
COOL
R
X
COOLING
TRANSFORMER
L2
L1
(HOT)
M22498
1
Fig. 11. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating), two independent
cool stages (one modulating), and two transformers.
OUTDOOR
T7770 REMOTE SENSOR
SUBBASE
T5 T6 T7 T4
HS
®
LONWORKS
BUS
®
ONWORKS
L
BUS
L2
1
L1
(HOT)
HEATING
TRANSFORMER
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.
2
3
USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.
L2
L1
(HOT)
HUMIDITY
SENSOR
AIR
SENSOR
123456789
T3
M
MOTION
SENSOR
AUXILIARY
TRANSFORMER
DISCHARGE
AIR
SENSOR
OSOS AS MXAS
MHC HP
RCX
2
ECONOMIZER
MODULATING
–
(4-20 mA)
+
MC
MH
W1 G
AUXRH
HEAT
RELAY 1
3
R
HEAT
X
Y1
COMPRESSOR
CONTACTOR 1
FAN
RELAY
MODULATING
–
(4-20 mA)
+
AUX
COOL
R
X
L2
1
L1
COOLING
TRANSFORMER
(HOT)
M22491
Fig. 12. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating), two independent
cool stages (one modulating), and three transformers.
63-4368 14
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