Honeywell T7350 User's Manual

T7350

Commercial Programmable Thermostat

SYSTEM ENGINEERING

Contents

Introduction ..................................................................................................................................

2

Device Description ..............................................................................................

2

Control Application ..............................................................................................

2

Network Control Provided ...................................................................................

3

Models ..................................................................................................................................

3

Products Covered ................................................................................................

3

Applicable Literature ............................................................................................

4

Abbreviations and Definitions ..................................................................................................................................

4

Performance Specifications .................................................................................

5

Communications ..................................................................................................

7

L ON M ARK® Functional Profile ..............................................................................

8

Network Configurations ..................................................................................................................................

9

Application Steps .................................................................................................................................. 10

Overview ............................................................................................................. 10

Step 1. Plan the System ...................................................................................... 11

Step 2. Determine Required Network Devices .................................................... 11

Step 3. Layout Communications and Power Wiring: .......................................... 11

L

ON

W

ORKS®

Bus Layout ...................................................................................... 11

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

Appendix A - Network Tools & Workstations ......................................................................................................................... 20

Appendix B - Network Alarm Reporting .................................................................................................................................. 21

Appendix C - Network Error Reporting ................................................................................................................................... 23

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 L

ON

M

ARK®

certified thermostat that provides networking capability in a L ON W ORKS® system using a transformer-coupled Free Topology Transceiver (FTT). See

Fig. 1.

The T7350H communicates with many L ON M ARK® devices 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.

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 ON S PEC ™ 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

ON

W

ORKS®

network. Fig. 9 shows a typical T7350H

application in a three-stage heat and two-stage cool heat

pump system. For additional hookups, see Fig. 10 through 12.

NOTEBOOK PC

BUILDING MANAGER

1 4 8 12 16

EXCEL 15

W7760

EXCEL 10

CVAHU

WALL MODULE

17 23 30 31 37 44

RS-232

SERIAL

PORT

SLTA

S7760

LonWorks BUS

T7350H

Back Select

MODEM

MODEM

BUILDING MANAGER

1 4 8 12 16

EXCEL 15

W7760

RS-232

SERIAL

PORT

SLTA

17 23 30 31 37 44

S7760

EXCEL 10

CVAHU

LonWorks BUS

Back Select

Fig. 1. Typical T7350H L ON W ORKS® network diagram.

WALL MODULE

T7350H

M22490

63-4368 2


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

T7350H1017

Applications

T7350H1009 Conventional

or

Heat Pump

Modulating

Maximum

Stages a

Heat

3 (2) b

Cool

3 (4) b

Features

Humidity, Occupancy,

Outdoor, Discharge Air

Capability

2 modulating, 2 c 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.

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 ® Adapter.

• Q7740A,B FTT Repeaters.

• 209541B FTT Termination Module.

See Table 2 for additional products.

Table 2. Additional Products.

Part Number

T7770A-D

T7771

Product

Description

R8242A Contactor, 24 Vac coil, DPDT.

AT72D, AT88A … 24vac

Transformers.

Wall Modules

Wall Module with active display.

4074EYD

AK3798

AK3797

AK3799

Wallplate for

T7770 Wall

Modules.

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

Comments

For covering an existing hole in a wall

3 63-4368


Applicable Literature

The following list of documents contains general information related to the T7350H Communicating Commercial

Thermostats.

Form No.

63-1299

62-0195

63-2605

74-2976

74-2937

74-3123

74-2697

95-7538

63-2617

74-2972

74-2858

95-7555

74-2954

95-7511

95-7554

Table 3. Applicable Literature

Title

T7350 Commercial Programmable

Thermostat Spec Data


Thermostat Installation Instructions


Thermostat Product Data

Excel L

ON

S

PEC

™ ZL7760A Specification

Data

Excel L ON S PEC ™ ZL7760A User’s Guide

Light Commercial Building Solution System

Communication Guide

T7770A, B, C, D, E, F, G Wall Module

Specification Data

T7770A, B, C, D, E, F, G Wall Module

Installation Instructions

T7771 Wall Module Product Data

S7760A Command Display Specification

Data.

Q7740A,B FTT Repeater Specification

Data.

Q7740A,B FTT Repeater Installation

Instructions.

Q7760A SLTA-10 Serial LonTalk

®

Specification Data.

Adapter

Q7760A SLTA-10 Serial LonTalk

®

Installation Instructions.

Adapter

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 ON S PEC ™) 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 L ON M ARK® 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 ON S PEC ™ network tool and monitored with a Workstation such as LonStation

®

. Many

LCBS networks include the W7760B & C plant managers.

Routers (including Q7751A) are not supported by the LCBS network configuration L ON S PEC ™ tool.

L ON S PEC ™-ZL7760A—A network connected tool which configures, commissions, calibrates and monitors the

Honeywell Light Commercial Building Solution Q7300,

T7350H, Excel 10 and Excel 15 family of controllers.

L ON S TATION ™—A low-cost, easy-to-use Light Commercial

Building Solution workstation that provides advanced building control capabilities for small to medium-size buildings.

L ON W ORKS® Network—A data network based on neurons communicating with each other using the LonTalk

®

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 ON W ORKS® node that is responsible for configuring the network, installing the nodes, binding the network variables between nodes, and general network diagnostics.

63-4368 4


Network Variables—A class of variables defined in Neuron C that allows communication over the L

ON

W

ORKS®

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

®

semiconductor device which implements the L

ON

W

ORKS®

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 ON S PEC ™.

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.

Model Applications

T7350H1009 Conventional

or

Heat Pump

T7350H1017 Modulating

Maximum Stages a

Heat

3 (2) b

Cool

3 (4) b

Features


Outdoor, Discharge Air Capability

2 modulating, 2 c

relay Humidity, Occupancy,

Outdoor, Discharge Air Capability,

4-20 mA output (2-10 Vdc with 500 ohm resistor)

Auxiliary

Relay

Isolated

Normally

Open

L

ON

W

ORKS

®

Capability?

Yes

Yes 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


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

ON

W

ORKS®

Bus.

Network jack for quick access by personal computer based tools.

Communications service-pin pushbutton to simplify startup.

L

ON

M

ARK®

Functional Profile: 8500_20 Space Comfort

Controller.

L

ON

M

ARK®

SCC Object Type: 8504 Rooftop See Fig. 3.

L

ON

M

ARK®

Program Identifier: 80:00:0C:55:04:03:04:2E.

L

ON

M

ARK®

Application Interoperability: version 3.3

Honeywell L

ON

M

ARK®

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.

Control

Heating

Cooling

Table 5. Default Setpoints.

Occupied

Not

Occupied Standby

70°F (21°C) 55°F (13°C) 67°F (19°C)

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


SUBBASE

6-3/4 (171)

2-3/16 (56)

1-9/16

(40)

2-1/32

(52)

4-1/16

(104)

2-1/32

(52)

4-1/2

(114)

1-5/8

(42)

2-3/8 (60)

3-1/4 (83)

6-9/16 (166)

1-5/8

(42)

M22432

Fig. 2. Dimensions of thermostat and subbase in in. (mm).

Communications

The T7350H provides networking capability in a L ON W ORKS® 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 ON W ORKS® FTT 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 ON W ORKS® networks can be configured in a variety of ways; refer to the E-Bus FTT Network Wiring Guidelines, form 74-

2865, 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 ON W ORKS® Bus length. Q7751A routers are not supported on LCBS L ON S PEC ™ configured systems. Approved cable types for L ON W ORKS® 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 ON W ORKS® Bus supports a polarity insensitive, free topology wiring scheme that, in turn, supports star, loop, and/or bus wiring.

7 63-4368


L ON M ARK®

Functional Profile

Hardware Output

Node

Object nv1 nviRequest

SNVT_obj_request

Mandatory

Network

Variables nv2 nvoStatus

SNVT_ obj_status nv3 nviTimeSet

SNVT_ time_stamp nv5 nviFileReq

SNVT_file_req nv7 nviFilePos

SNVT_file_pos nc1 - nciDeviceName nc2 - nciApplVer

Optional

Network

Variables

UCPTdevName

UCPTapplVer nv6 nvoFileStat

SNVT_file_status

Configuration Properties

(manf specific)

(manf specific)

Hardware Output nv1 nviSpaceTemp

SNVT_temp_p

SCC-Rooftop

Object Number 8504.

Mandatory

Network

Variables nv26 nvoSpaceTemp

SNVT_ temp_p nv2 nviSetpoint

SNVT_ temp_p nv5 nviOccSchedule

SNVT_tod_event nv6 nviOccManCmd

SNVT_occupancy nv7 nviOccSensor

SNVT_occupancy nv8 nviApplicMode

SNVT_hvacMode

Optional

Network

Variables nv28 nvoEffectSetpt

SNVT_temp_p nv29 nvoEffectOccup

SNVT_occupancy nv30 nvoHeatCool

SNVT_hvac_mode nv34 nvoDischAirTemp

SNVT_temp_p nv37 nvoTerminalLoad

SNVT_lev_percent nv43 nvoSpaceRH

SNVT_lev_percent nv45 nvoOutdoorTemp

SNVT_temp_p nv9 nviInUse

UNVT_inUse nv10 nviPgm

UNVT_pgmIn

Manufacturer

Defined

Section nv11 nroT7350Ver

UNVT_version nv12 nroPgmVer

UNVT_pgmId nv13 nvoPgm

UNVT_pgmOut nv14 nvoTime

SNVT_time_stamp nv15 nvoAlarmH

UNVT_alarm nv16 nvoAlarmStatus

UNVT_alarmStatus nv17 nvoAlarmLog

UNVT_alarmLog nv18 nvoError

UNVT_error nc1 - nciSndHrtBt nc4 - nciRevHrtBt nc2 - nciSetpoints nc6 - nciBypassTime

nciConfig

nciConfigPts

nciDayLghtSav

nciDaySchedule0

nciDaySchedule1

nciDaySchedule2

nciDaySchedule3

nciDaySchedule4

nciDaySchedule5

nciDaySchedule6

nciDaySchedule7

nciHolSched

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)

(optional)

(mandatory)

(optional)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

(manf specific)

Hardware Input nv30 nviBypass

SNVT_switch nv31 nviFanAuto

SNVT_switch nv32 nviManValue

UNVT_manValue nv34 nviDlcShed

UNVT_dlcShed

Manufacturer

Defined

Section nv43 nvoBypass

SNVT_switch nv44 nvoOccSchedule

SNVT_tod_event nv45 nvoOccSensor

SNVT_occupancy nv46 nvoData1

UNVT_data1 nv47 nvoData2

UNVT_data2

Hardware Input

Fig. 3. T7350H L

ON

M

ARK®

Space Comfort Controller Rooftop Object (8504) with Node Object.

M22431

63-4368 8


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 ON W ORKS® network. Information that can be 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 ON S PEC ™ T7350H General

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

T7350H.nvoTime or

XL15a.nvoTimeOut

Q7300.nvoTime

Destination

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

T7350H.nvoOccSchedule or

XL15a.nvoTodEventCmd[i]

Q7300.nvoOccSchedulei

Destination

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

T7350H.nvoHeatCool or Workstation

Command Destination

T7350H.nviApplicMode

• Fan Settings:

Fan settings (ON, AUTO) can be changed from a network connected Workstation.

Source

Workstation or Network Tool

Destination

T7350H.nviFanAuto

• 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

T7350H.nviOutdoorTemp or

XL10.nvoOdTemp

XL15c.nvoOdTemp

Destination

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 ON S PEC ™) 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,

9

• 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

T7350H.nvoDischAirTemp

Destination

XL15c.nviDATemp

• Space Temperature Sharing:

If a valid space temperature value is received at the

T7350H Space Temperature network variable input, that

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

T7350H.nvoSpaceTemp or XL10.nvoSpaceTemp

Destination

T7350H.nviSpaceTemp

• 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

Destination

T7350H.nviSpaceRH or XL15c.nviRARH

• 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

Destination

T7350H.nviSetpoint

• 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

Destination

T7350H.nviOccSensor

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

Occupied

Occupied

Standby

Unoccupied

Occupancy/Motion

Open

Closed

NA

NA

Sensor Contact

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]

Destination

T7350H.nviBypass

• 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 command 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.

Workstation

Command Display

XL15b

Source Destination

T7350H.nviOccManCmd

APPLICATION STEPS

6

7

4

5

2

3

Step

1

Overview

The application steps shown in Table

7

are guidelines for configuring the T7350H in a L ON W ORKS® Bus network and explain the network role of the T7350H.

Table 7. Application Steps.

Description

Plan the system.

Determine required network devices.

Lay out communications and power wiring.

Prepare wiring diagrams.

Order equipment.

Configure T7350.

Troubleshooting.

63-4368 10


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

ON

S

PEC

™ 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

RS-232

SERIAL

PORT

Q7760

SLTA

SHIELDED

INTERFACE

CABLE

CABLE

PART

NO. 205979

T7350H

LonWorks

BUS PORT

M22492

Fig. 4. Connecting personal computer to LonWorks® bus.

Step 2. Determine Required Network Devices

A maximum of 60 nodes can communicate on a single

L

ON

W

ORKS®

Bus segment. Each L

ON

W

ORKS®

Bus device 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

ON

W

ORKS®

Bus segments. Please note that routers are not supported by the LCBS L

ON

S

PEC

™ 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.

Step 3. Layout Communications and Power

Wiring:

L ON W ORKS®

Bus Layout

The communications L

ON

W

ORKS®

Bus, is a 78-kilobit network that uses transformer isolation and differential Manchester encoding. The Free Topology Transceiver (FTT) L

ON

W

ORKS® 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

ON

W

ORKS®

network topology rules. Fig. 5 shows T7350H devices

connected in a typical free topology L

ON

W

ORKS®

network.

NOTEBOOK PC

T7350H T7350H T7350H T7350H T7770

WITH NO

LonWorks

BUS ACCESS

RS-232

SLTA

MODEM

T7350H

LonWorks BUS

T7350H

MODEM

T7350H

RS-232

SLTA

T7350H

LonWorks BUS

T7350H

MODEM

RS-232

SLTA

LonWorks BUS

T7770

LonWorks BUS

I/O CONNECTIONS JACK FOR OPERATOR TERMINAL

Fig. 5. Typical topology for T7350 devices in L

ON

W

ORKS®

network.

11

M22493

63-4368


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

ON

W

ORKS®

Bus terminals. Refer to L

ON

W

ORKS®

Bus

Wiring Guidelines form 74-2865 for details.

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

T5 T6 T7 T4 T3 OS OS AS AS AUX W3/Y4 Y3 W2 Y2

EB EB HS HC HP M M X RH RC AUX W1 Y1 G

BROWN YELLOW

PART NO. 209541B

TERMINATION MODULE

ORANGE 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.

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment circuitry.

Disconnect power supply before installation.

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 18gauge. 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

L

ON

W

ORKS®

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

ON

W

ORKS®

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

SUBBASE



WIRES TO ALL

INPUTS AND

OUTPUTS

2.

BROWN ORANGE

PART NO. 209541B

TERMINATION MODULE

YELLOW M22495

Fig. 7. Doubly terminated L ON W ORKS® bus termination modules.

WIRES TO ALL

INPUTS AND

OUTPUTS

M22496

WIRES TO T7300H

COMMUNICATING SUBBASE

Fig. 8. Ferrite core wires from T7350H to L ON W ORKS® inputs and outputs.

63-4368 12


T7770 REMOTE SENSOR

9 8 7 6 5 4 3 2 1

OUTDOOR

AIR

SENSOR

4

ECONOMIZER

COMPRESSOR

CONTACTOR 2

DISCHARGE

AIR

SENSOR

HEAT

RELAY 3

HEAT

RELAY 2

SUBBASE



COMPRESSOR

CONTACTOR 3

L

ON

W

ORKS

®

BUS

L ON W ORKS

®

BUS

1 2

L2

L1

(HOT)

HUMIDITY

SENSOR

MOTION

SENSOR

3 HEAT

RELAY 1

FAN

RELAY

COMPRESSOR

CONTACTOR 1

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2

3

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

4 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M22499

Fig. 9. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system with one transformer.

T7770 REMOTE SENSOR

9 8 7 6 5 4 3 2 1

OUTDOOR

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

DISCHARGE

AIR

SENSOR

HEAT

RELAY 3

HEAT

RELAY 2

SUBBASE



COMPRESSOR

CONTACTOR 3

L ON W ORKS

®

BUS

HUMIDITY

SENSOR

MOTION

SENSOR

3 HEAT

RELAY 1

FAN

RELAY

L ON W ORKS

®

1

BUS 4

ECONOMIZER

COMPRESSOR

CONTACTOR 1

L2

2

L1

(HOT)

L2

L1

(HOT)

AUXILIARY

TRANSFORMER


2

3

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

4 USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M22497

Fig. 10. Typical hookup of T7350H1009 with auxiliary transformer.

13 63-4368


T7770 REMOTE SENSOR

OUTDOOR

AIR

SENSOR

9 8 7 6 5 4 3 2 1

DISCHARGE

AIR

SENSOR

MODULATING

–

+

HEAT

(4-20 mA)

SUBBASE

T5 T6 T7 T4 T3 OS OS AS AS AX AH AC

R

X

AUX

MODULATING

– COOL

+ (4-20 mA)

R

X

EB EB HS HC HP M M X RH

2

RC AUX W1 Y1 G

L ON W ORKS

®

BUS

L ON W ORKS

®

BUS

HUMIDITY

SENSOR

MOTION

SENSOR

HEAT

RELAY 1

FAN

RELAY

3

ECONOMIZER

COMPRESSOR

CONTACTOR 1

1

L2

L1

(HOT)

HEATING

TRANSFORMER


2

3

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

COOLING

TRANSFORMER

L2

L1

(HOT)

1

M22498

Fig. 11. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating), two independent cool stages (one modulating), and two transformers.

T7770 REMOTE SENSOR

9 8 7 6 5 4 3 2 1

OUTDOOR

AIR

SENSOR

DISCHARGE

AIR

SENSOR

MODULATING

–

+

HEAT

(4-20 mA)

SUBBASE

T5 T6 T7 T4 T3 OS OS AS AS MX MH MC

R

X

AUX

MODULATING

–

+

COOL

(4-20 mA)

R

X

HS HC HP M M X RH

2

RC AUX W1 Y1 G

L ON W ORKS

®

BUS

L ON W ORKS

®

BUS

HUMIDITY

SENSOR

MOTION

SENSOR

HEAT

RELAY 1

FAN

RELAY

3

ECONOMIZER

COMPRESSOR

CONTACTOR 1

1

L2

L1

(HOT)

HEATING

TRANSFORMER

L2

L1

(HOT)

AUXILIARY

TRANSFORMER

1

2

3

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

COOLING

TRANSFORMER

L2

L1

(HOT)

1

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


General Considerations

Table 8 lists wiring types, sizes and distances for the T7350 and Excel 10 products. The T7350 terminal strip accepts 18 through 22 AWG (0.82 to 0.34 sq. mm) wire.

Wire Function

Digital Outputs:

W Y G AUX X

Modulating Outputs:

MX MH MC

Remote Humidity

Sensor:

HS HC HP

Discharge Air

Temperature Sensor:

AS

Outdoor Air

Temperature Sensor:

OS

Motion Sensor:

M

Table 8. Field Wiring Reference.

Recommended Wire

Size (Minimum)

Specification or

Requirement

18 AWG (0.82 sq mm) five wire cable bundle.

Standard thermostat wire.

18 AWG (0.82 sq mm) 1 pair per output.

Honeywell Part

Number

AK3726

18 to 22 AWG

(0.82 to 0.34 sq mm)

3 wires.

AK3757C, AK3744C,

AK3741A, AK3702x

AK3746C, AK3724,

AK3703x

18 to 22 AWG

(0.82 to 0.34 sq mm)

18 to 22 AWG

(0.82 to 0.34 sq mm)

1 pair.

18 AWG (0.82 sq mm) 1 pair.

AK4606ABE,

AK4628AWH,

AK3702x, AK3741A,

AK3744C, AK3757C

AK3757C, AK3744C,

AK3741A, AK3702x

Wall Module connections:

T3-T7

Power Wiring to:

X RH RC

L

ON

W

ORKS®

Bus

(Non-Plenum).

18 to 22 AWG

(0.82 to 0.34 sq mm)

18 to 14

1

AWG

(0.82 to 2.0 sq mm) use heavier wire for longer runs.

22 AWG

(0.34 sq mm)

1 pair.

Twisted pair wire is recommended for wire runs longer than 100 ft. The number of pairs depends on the model and functions selected.

NEC Class II,

140°F (60°C) rating.

AK4606ABE,

AK4628AWH,

AK3702x, AK3741A,

AK3744C, AK3757C

AK4606ABE,

AK4628AWH,

AK3702x, AK3741A,

AK3744C, AK3757C,

AK3726

AK3702x, AK3741A,

AK3744C, AK3757C,

AK3712x, AK3754

Nema Level IV

U.L. Type CMR

Twisted pair stranded conductor, nonshielded.

AK3798 (1 pair)

Distance (Maximum)

1000 feet.

1000 feet.

500 feet.

1000 feet.

500 feet.

1000 feet.

1000 feet.

Limited by line-loss effects on power consumption.

Refer to E-bus Wiring

Guidelines Users

Guide 74-2865 for maximum length and generic cable specifications.

—

L ON W ORKS® Bus

(Plenum Rated).

22 AWG

(0.34 sq mm)

Nema Level IV

U.L. Type CMP

Twisted pair stranded conductor, nonshielded.

AK3797 (1 pair)

AK3799 (2 pair)

NOTE: 1. The X, RH and RC terminals will accept 14 to 22 AWG. 14 and 16 AWG should be avoided since the stiff cable interferes with the cover to subbase installation.

15 63-4368


Honeywell Part

Number

AK3798

AK3797

AK3799

AK4606ABE

AK4628AWH

AK3702x

AK3741A

AK3744C

AK3757C

AK3703x

AK3724

AK3746C

AK3726

AK3712x

AK3754

18

16

14

18

18

18

18

22

18

18

18

22

22

22

22

Size (AWG)

Table 9. Honeywell Cable Details.

5

2

3

3

2

2

3

2

2

2

2

4

2

Number of wires

2

2

Yes

No

Yes

Yes

Yes

No

No

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

Jacket

No

Yes

No

No

No

No

Yes

Yes

No

Plenum Rated

No

Yes

Yes

No

Yes

No

Description

E-bus cable.

E-bus cable.

E-bus cable.

Beige jacket.

White jacket.

—

—

Red jacket.

White jacket.

—

Tan jacket.

Tan jacket.

Tan jacket.

TFN

TFN

63-4368 16


Step 5. Order Equipment

After compiling a bill of materials through completion of the previous application steps, refer to Table

10, Ordering

Information.

Part Number

T7350H1009 Communicating Thermostat with three heating and three cooling digital outputs.

T7350H1017 Communicating Thermostat with two modulating outputs, one heating and one cooling digital output.

T7771A

Product Description

Remote Temperature Sensor.

Table 10. Ordering Information.

Comments

• Optional heat pump control.

• Isolated auxiliary digital output.

• Isolated auxiliary digital output.

T7770A1006

50000314-

001

Remote Wall Module.

T7770B1046 Remote Wall Module.

T7770C1044 Remote Wall Module.

T7770D1000 Remote Wall Module.

AK3798 L ON W ORKS® Bus (Non-Plenum), 1 pair.

AK3797

AK3799

209541B

H7625

H7635

C7089A

C7170A,

C7031G2014

C7041B

C7041C

C7041J

C7770A

50000452-

001

50000083-

001

PDA

L

L

ON

ON

W

W

ORKS®

ORKS®

Bus (Plenum rated), 1 pair.

Bus (Plenum rated), 2 pair.

FTT Network Termination Module.

Remote Humidity Sensors

Outdoor Air Sensors.

Duct Discharge Air Sensors:

6 inch probe.

18 inch probe.

150 inch averaging.

6 inch probe.

Troubleshooting Cable.

Thermostat Interface Module (TIM).

Qualified Palm OS PDA.

PDA Configuration Software.

• Pushbutton setpoint adjustment with LED indicators.

• Occupied/unoccupied override (bypass) with LED.

• L ON W ORKS® Bus jack.

• Basic model with room temperature sensor.

• ± setpoint change.

• ± setpoint change.

• OCC button and LED.

• OCC button and LED.

—

—

—

—

—

—

—

One Troubleshooting Cable required for each installation technician.

One TIM required for each installation technician. Note that a network tool such as L ON S PEC ™ eliminates the need for a TIM.

One PDA required for each installation technician.

Refer to the PDA Configuration Software for an up-todate list of qualified PDA hardware. Note that a network tool such as L ON S PEC ™ eliminates the need for a PDA.

One Configuration software package can be used to program multiple PDAs. Note that a network tool such as L ON S PEC ™ eliminates the need for a PDA.

Step 6. Configure T7350

Use Excel L

ON

S

PEC

™ Software to configure the T7350H

Thermostat for specific applications. The Excel L

ON

S

PEC

™

User’s Guide, form 74-2937, provides software operation instructions for this personal computer based application.

17 63-4368


Step 7. Troubleshooting

Table 11. Troubleshooting Information.

Symptom

Display will not come on.

Temperature display is incorrect.

Possible Cause

Thermostat is not being powered.

Action

Check that X terminal is connected to the system transformer.

Check for 24 Vac between X and RH terminals.

If missing 24 Vac:

• Check if circuit breaker is tripped; if so, reset circuit breaker.

• Check if system fuse is blown; if so, replace fuse.

• Check if the HVAC equipment power switch is in the Off position; if so, set to the On position.

• Check wiring between thermostat and HVAC equipment. Replace broken wires and tighten loose connections.

If 24 Vac is present, proceed with troubleshooting.

Room temperature display has been recalibrated.

Thermostat is configured for °F or °C display.

Use PDA or L ON S PEC ™ configuration software to recalibrate as desired.

Press both Run Schedule and Copy, then reconfigure the display.

Bad thermostat location.

Display shows three dashes and a degree sign (all systems shut down).

Relocate the thermostat.

T7350 is set for remote sensing and sensor is missing or circuit is either open or shorted.

Temperature settings will not change.

(Example: Cannot set heating higher or cooling lower.)

Room temperature is out of control.

Upper or lower temperature limits were reached.

Occupied setpoint temperature range stops were configured.

Keypad is locked. When a locked key is pressed, LOCKED appears momentarily on the LCD.

Remote temperature sensing is not working.

Heat will not come on.

No power to the thermostat.

Check the temperature setpoints:

• Heating limits are 40 to 90°F (7 to 31°C)

• Cooling limits are 45 to 99°F (9 to 37°C)

Using a PDA or L ON S PEC ™, check setpoint stops. If necessary, reconfigure the stop(s).

• Use PDA or L ON S PEC ™ (Set, Display) to unlock keypad.

• Press both Run Schedule and Copy, then change keypad lock level.

Check all remote sensors.

Thermostat minimum off time is activated.

System selection is set to Off or

Cool.



If missing 24 Vac:






• Wait up to five minutes for the system to respond.

• Use PDA or L ON S PEC ™ to configure heating response.

Set system selection to Heat or Auto.

63-4368 18


Symptom

Cooling will not come on.

Table 11. Troubleshooting Information. (Continued)

Possible Cause

No power to the thermostat.

Action



If missing 24 Vac:






• Wait up to five minutes for the system to respond.

• Use PDA or L ON S PEC ™ to configure cooling response.

Set system selection to Cool or Auto.

Thermostat minimum off time is activated.

System selection is set to Off or

Heat.

System indicator

(flame: heat, snowflake: cool) is displayed, but no warm or cool air is coming from the registers.

The call for heat or cool is not yet given.

Conventional heating equipment turns the fan on only after the furnace has warmed to a setpoint.

Heating or cooling equipment is not operating.

Check if any stage indicators (dots next to the system indicator) are displayed. With no display of stage indicators, no call for cool/heat is yet given.

For the modulating T7350H1017 only: Check the information screens. MODHEAT or MODCOOL percentages of zero and 100 indicate an extreme signal from the given terminal.

Wait one minute after seeing the on indicator and then check the registers.

Verify operation of heating or cooling equipment in self-test.

19 63-4368


APPENDIX A - NETWORK TOOLS & WORKSTATIONS

Table 12. T7350H Operational Support.

Network Tools & Workstations

Summary of

T7350H Operational Support

Device Configuration

View & Modify Weekly Schedule

View & Modify Holiday Schedule

Data Monitoring

Command Outputs to Manual Value

Override System Delays

Room Temperature Calibration

Command Occupancy Override

Command Fan Operation (On Auto)

Command System Mode (off, auto, heat, cool)

View & Modify Temperature Setpoints

Report T7350 alarm data

Network Time Scheduler for T7350 Devices

Generate Trend & Log files with T7350 data

User defined T7350 analog & digital alarms

Update T7350 Time Clock

Set T7350 as network Time Master

View T7350 Cover Firmware Version

Update T7350 Cover Firmware

View T7350H SubBase Firmware Version

Update T7350H SubBase Firmware

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X X X

X

X

X

X

63-4368 20


APPENDIX B - NETWORK ALARM REPORTING

Table 13. T7350H Alarm Change of State Event.

A T7350H alarm change of state event is reported by the manufacturer defined output network variable nvoAlarmH.

nvoAlarmH Field subnet

Description node type

The L

ON

W

ORKS®

subnet number in the domain entry to which nvoAlarmH is bound. If nvoAlarmH is not bound, it reports domain index 0.

0: Invalid subnet (power up value)

1-255: Subnet number

The L ON W ORKS® node number in the domain entry to which nvoAlarmH is bound. If nvoAlarmH is not bound, it reports domain index 0.

0: Invalid entry (power up value)

1-127: Node number

The alarm type being issued.

0: AT_NO_ALARM (power up value)

1: AT_INVALID_SUBBASE_TYPE

2: AT_NETWORK_COMM_FAIL

3: AT_SENSOR_FAIL

4: AT_INVALID_IO_CONFIG

5: AT_COVER_COMM_FAIL

6: AT_COVER_SUBBASE_MISMATCH

Return to Normal Codes

-127: AT_rtnINVALID_SUBBASE_TYPE

-126: AT_rtnNETWORK_COMM_FAIL

-125: AT_rtnSENSOR_FAIL

-124: AT_rtnINVALID_IO_CONFIG

-123: AT_rtnCOVER_COMM_FAIL

-122: AT_rtnCOVER_SUBBASE_MISMATCH

-1: AT_ALARM_NOTIFY_DISABLED

Table 14. T7350 Current Alarm Status.

The T7350 current alarm status is reported by the manufacturer defined output network variable nvoAlarmStatus.

nvoAlarmStatus

Field coverCommFail

Description invalidIOConfig sensorFail networkCommFail invidSubBaseTyp

Communications between the cover and sub-base.

0: No alarm (power up value).

1: The communications between the thermostat cover assembly and the sub-base has failed in one or both directions. The data from the cover to the sub-base has not been received for at least 90 seconds, or data from the sub-base is not updating the cover assembly.

Output configuration error.


1: The number of outputs configured exceeds the capability of the sub-base to support them.

Considers sub-base type, heat pump/conventional application, maxCoolStgs, maxHeatStgs.

Sensor failure.


1: One of the analog sensors on the cover assembly has failed or is out of range (high or low).

Network Communications Failure.


1: One of the bound network input network variables is not being updated periodically. This alarm may be caused by a failed node or a damaged L ON W ORKS NETWORK cable.

Sub-base type error.


1: The detected sub-base type is not supported by the firmware version of the cover assembly.

21 63-4368


Table 15.

Identifying Five Most Recent T

7350 Alarms.

The five most recent T7350 alarms are identified in the manufacturer defined output network variable nvoAlarmLog.

nvoAlarmLog Field alarm1 alarm2 alarm3 alarm4 alarm5

Description

Alarm log: Most recent alarm.

Alarm Codes

0: AT_NO_ALARM (power up value)



3: AT_SENSOR_FAIL




Return to Normal Codes








Alarm log: 2 nd

most recent alarm.


Alarm log: 3 rd

most recent alarm.


Alarm log: 4 th

most recent alarm.


Alarm log: Oldest alarm.


63-4368 22


APPENDIX C - NETWORK ERROR REPORTING

Table 16.

Reporting T

7350H Errors.

T 7350H errors are reported through the manufacturer defined output network variable, nvoError. nvoError Field errLoclSpaceSensr errRemtSpaceSensr errNetSpaceSensr errLoclHumSensr errRemtHumSensr errNetHumSensr errRemtOdSensr errNetOdSensr errRemtSetPt errDischSensr errIOConfig errSubBaseType errUnused1 errSelfTest errCoverCommFail

Description

Local space temperature sensor not working.

0: Sensor value is OK. (power up value)

1: Sensor is configured to function and is out of range or disconnected.

Remote space temperature sensor not working.



Network space temperature sensor not working.


1: Sensor is configured by the thermostat to function but is not being updated by either the bound network sensor or by the subbase (faulty subbase).

Local Humidity sensor not working.



Remote Humidity sensor not working.



Network Humidity sensor not working.



Remote Outdoor air sensor not working.



Network Outdoor air sensor not working.



Remote wall module set point is out of range or disconnected.

0: Value is OK. (power up value)

1: Remote wall module set point is configured to function and is out of range or disconnected.

Discharge sensor out of range or disconnected.



Output configuration error. Considers sub-base type, heat pump / conventional application. maxCoolStgs, maxHeatStgs.

0: The outputs configuration is consistent with the sub-base type selected (power up value)

1: The number of outputs configured exceeds the capability of the sub-base to support them.

Sub-base type error.

0: The sub-base is a valid sub-base type (power up value)

1: The detected sub-base type is not supported by the firmware version of the cover assembly.

Not currently used

Self test failure. Upon factory test power up, a self test of memory is performed. If external RAM,

EEPROM, or application FLASH memory fails the test, nvoError.errSelfTest is set. This bit is intended for use in production testing. Field devices should ignore this bit.

0: Passed the test

1: Failed the test

Communications between the cover and sub-base

0: No error (power up value)

1: The communications between the thermostat cover assembly and the sub-base has failed in one or both directions. The data from the cover to the sub-base has not been received for at least

90 seconds, or data from the sub-base is not updating the cover assembly.

23 63-4368


Table 16.

Reporting T

7350H Errors. (Continued)

T 7350H errors are reported through the manufacturer defined output network variable, nvoError. nvoError Field Description errSubBaseVerMisMatch Sub-base/cover firmware mismatch.

0: Sub-base and cover firmware are compatible. (power up value)

1: The firmware version in the sub-base is unable to communicate correctly with the firmware version of the cover assembly. The cover assembly Public Interface number of the sub-base is not compatible with the Public Interface number of the sub-base. That is nroT7350Ver.commVer does not match the version supported by the sub-base. Communications with the sub-base is turned off.

errNviSpaceTemp errNviOccSchedule nviSpaceTemp network variable is:

0: either not bound or is bound and being updated periodically (power up value)

1: bound and not being updated periodically (communications or source node failure) nviOccSchedule network variable is:


1: bound and not being updated periodically (communications or source node failure).

errNviOccSensor errNviApplicMode errNviOutdoorTemp errNviSpaceRH nviOccSensor network variable is:


1: bound and not being updated periodically (communications or source node failure) nviApplicMode network variable is:


1: bound and not being updated periodically (communications or source node failure) nviOutdoorTemp network variable is:


1: bound and not being updated periodically (communications or source node failure) nviSpaceRH network variable is:


1: bound and not being updated periodically (communications or source node failure) errNviBypass errNviDlcShed nviBypass network variable is:


1: bound and not being updated periodically (communications or source node failure) nviDlcShed (Demand Limit Control Shed signal) network variable is:


1: bound and not being updated periodically (communications or source node failure)

63-4368 24


APPENDIX D - NETWORK ACCESS TO LOCAL SENSOR DATA

Table 17. T7350H Reports Local Sensor Data.

The T7350H reports local sensor data using the following output network variables.

Nv Name

LonSpec Reference

Name nvoDischAirTemp Discharge Temperature

Out

Description

The current discharge air temperature. The sensor value source is configured by nciConfig.dischAirSensor. A value of 327.67 means the sensor is not functioning correctly or is out of range.

327.67: Power up value nvoOccSensor Occupancy Sensor Out nvoOutdoorTemp Outdoor Temperature Out The current outdoor temperature. The sensor value source is specified by nciConfig.oDAirSensor. A value of 327.67 means the sensor is not functioning correctly or is out of range.

327.67: Power up value nvoSpaceRH Space Humidity Out

Status of occupancy sensor

0: OC_OCCUPIED

1: OC_UNOCCUPIED

-1: OC_NUL (not configured and power up value)

The current space humidity. The sensor value source is specified by nciConfig.humiditySensor. A value of 163.84 means the sensor is not functioning correctly or is out of range.

163.84: Power up value nvoSpaceTemp Space Temperature Out The current space temperature. The sensor value source is specified by nciConfig.spaceSensor. A value 327.67 means the sensor is not functioning correctly or is out of range.

327.67: power up value

APPENDIX E - SCHEDULING

NETWORK DEVICES

A T7350H can be used to time schedule the following

Honeywell controllers:

• Another T7350H.

• T7300/Q7300.

• XL15C application objects (Control loops/StartStop loops).

• XL10 controllers.

A single T7350 can be configured to schedule all (up to 119) of the compatible controllers connected to the same network.

This is accomplished by a one to many binding from the source T7350 to the destination controller or object.

T7350.nvoOccSchedule > XL10.nviOccSchedule.

L

ON

S

PEC

™ automatically implements these NV bindings based on the selection of Unscheduled Objects (XL10(s),

Q7300(s), T7300H(s) and XL15cAP(s) located on the

L

ON

S

PEC

™ T7350 Scheduling Screen.

APPENDIX F - NETWORK MASTER

CLOCK

A T7350H can be used as the network time master for the following network connected Honeywell controllers:

• Another T7350H.

• T7300/Q7300.

• XL15A.

This is accomplished by a one to many binding from the source T7350H to the destination controller. The following is an example NV binding of one T7350H as a time master to another.

T7350H.nvoTime > T7350H.nviTimeSet

L ON S PEC ™ automatically implements these NV bindings based on the selection of Network Time Master check box on the T7350 General configuration screen. The Day Light

Saving Start and Stop Month on all time master recipients should be configured to None (invalid). This prevents erroneous time changes during temporary network outages.

25 63-4368


APPENDIX G - NETWORK CONNECTIONS TO OTHER LCBS DEVICES

Table 18. Network Connections to XL15A AP Inputs.

T7350H Network Variable Outputs can be used as inputs to XL15A application objects.

XL15A

Application Object

Analog Alarm

Digital Alarm

Bypass Logs

Application Input

Selected Analog Value

Selected Digital Value

Select Bypass Object

Source T7350H

Network Variable nvoSpaceTemp nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoEffectOccup

Network Variable Field

PercentCmdHeat

PercentCmdCool

RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1

RelayFan dehumidActive

Run Times

Trends

Select Point Name

Trend Pt nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoSpaceTemp nvoEffectSetpt nvoEffectOccup nvoHeatCool nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoData1 nvoData1 nvoData2 nvoData2 nvoData2

RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1

RelayFan

HeatStgsOn

CoolStgsOn

PercentCmdHeat

PercentCmdCool

RelayHeat3

RelayCool3

RelayHeat2

63-4368 26


Table 18. Network Connections to XL15A AP Inputs. (Continued)


XL15A


Application Input nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2

Source T7350H

Network Variable


RelayCool2

RelayAux

RelayHeat1

RelayCool1


Demand Limit Control

Analog Logic Function

Digital Logic Function

Analog Input

Digital Input nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoAlarmStatus nvoError nvoError nvoError nvoError nvoError nvoError

27

PercentCmdHeat

PercentCmdCool

PercentCmdHeat

PercentCmdCool

CoverCommFail

InvalidIOConfig

SensorFail networkCommFail

InvalidSubBaseType errLoclSpaceSensr

ErrRemtSpaceSensr

ErrNetSpaceSensr

ErrLoclHumSensr

ErrRemtHumSensr errNetHumSensr

ErrRemtOdSensr

ErrNetOdSensr

ErrRemtSetPt

ErrDischSensr errIOConfig errSubBaseType errSubBaseVerMisMatch errNviSpaceTemp errNviOccSchedule errNviOccSensor errnviApplicMode errnviOutdoorTemp

63-4368




XL15A



Control Loop LoopDisable nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError

Source T7350H

Network Variable nvoError nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoAlarmStatus nvoAlarmStatus

Network Variable Field errnviSpaceRH errNviBypass errNviDLCShed

RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1


CoverCommFail

InvalidIOConfig



ErrRemtSpaceSensr

ErrNetSpaceSensr

ErrLoclHumSensr


ErrRemtOdSensr

ErrNetOdSensr

ErrRemtSetPt

ErrDischSensr errIOConfig errSubBaseType errSubBaseVerMisMatch errNviSpaceTemp errNviOccSchedule errNviOccSensor errnviApplicMode errnviOutdoorTemp errnviSpaceRH errNviBypass errNviDLCShed

RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1

63-4368 28




XL15A

Application Object Application Input

Control Loop

Start/Stop Loop

MainSensor

ResetSensor

LoopDisable nvoError nvoError nvoError nvoError nvoError nvoError nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoAlarmStatus nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoData2 nvoData2

Source T7350

Network Variable nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus


RelayFan dehumidActive nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp

PercentCmdHeat

PercentCmdCool

CoverCommFail

InvalidIOConfig



ErrRemtSpaceSensr

ErrNetSpaceSensr

ErrLoclHumSensr


ErrRemtOdSensr

ErrNetOdSensr

ErrRemtSetPt


RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1


29 63-4368


Table 19. Network Connections to XL15A AP Outputs.

T7350H Network Variable Inputs can be connected to XL15A application outputs.


Network Time Schedule

DLC

XL15A

Application Output

Scheduled Device List

Destination T7350H

Network Variable nviOccSchedule

External Load Assignment nviDlcShed

Logic Loop ACDO Analog Input

DCAO Analog Input nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoData1 nvoData1 nvoData1 nvoOccSensor nvoEffectOccup nvoHeatCool


Table 20. Network Connections to XL15C AP Inputs.

T7350H Network Variable Outputs can be used as inputs to XL15C application objects.

XL15C


Math Functions:

Min, Max, Avg, Sqrt Add,

Subt, Mult, Div

Math Functions:

Network Special

SNVT_temp_p

Math Functions:

Network Special

SNVT_lev_percent


Analog Input

Source T7350H

Network Variable nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoData1 nvoData1 nvoData1 nvoOccSensor nvoEffectOccup nvoHeatCool nvoData2 nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoOutdoorTemp nvoSpaceRH nvoTerminalLoad


PercentCmdHeat

PercentCmdCool

HeatStgsOn

CoolStgsOn

BypassTime stagesActive

PercentCmdHeat

PercentCmdCool

HeatStgsOn

CoolStgsOn

BypassTime

63-4368 30


Table 20. Network Connections to XL15C AP Inputs. (Continued)


XL15C


Logic Loop

Control Loop


DCAO Digital Input

OR Digital Input

AND Digital Input nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoData2 nvoData2 nvoData2

Source T7350H

Network Variable nvoData2 nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2

SetPtOverride Digital Input nvoAlarmStatus

LoopDisable nvoAlarmStatus

Bypass Input

OccupancySensor nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoError nvoError nvoError nvoError

Network Variable Field stagesActive

CoverCommFail

InvalidIOConfig



ErrRemtSpaceSensr

ErrNetSpaceSensr

ErrLoclHumSensr


ErrRemtOdSensr

ErrNetOdSensr

ErrRemtSetPt


RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

Relay Aux

RelayHeat1

RelayCool1


CoverCommFail

InvalidIOConfig



ErrRemtSpaceSensr

ErrNetSpaceSensr

ErrLoclHumSensr

31 63-4368




XL15C


Control Loop

Start/Stop Loop


MainSensor

ResetSensor

RecoverySensor

LimitAnalogInput

LoopDisable

Bypass nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError

Source T7350H

Network Variable nvoError nvoError nvoError nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoSpaceTemp nvoEffectSetpt nvoDischAirTemp nvoTerminalLoad nvoSpaceRH nvoOutdoorTemp nvoData1 nvoData1 nvoData1 nvoData1 nvoData1 nvoOccSensor nvoEffectOccup nvoHeatCool nvoData2 nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus nvoAlarmStatus



ErrRemtOdSensr

ErrNetOdSensr

ErrRemtSetPt


RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1


PercentCmdHeat

PercentCmdCool

HeatStgsOn

CoolStgsOn

BypassTime stagesActive

CoverCommFail

InvalidIOConfig


63-4368 32




XL15C

Application Object Application Input nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2 nvoData2

Source T7350H

Network Variable nvoAlarmStatus nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError nvoError



ErrRemtSpaceSensr

ErrNetSpaceSensr

ErrLoclHumSensr


ErrRemtOdSensr

ErrNetOdSensr

ErrRemtSetPt


RelayHeat3

RelayCool3

RelayHeat2

RelayCool2

RelayAux

RelayHeat1

RelayCool1


S7760 - Command Display

A network connected Command display can be configured (by

LonSpec) to implement the following T7350H functions:

View and Modify Schedules:

• Occupied, Unoccupied and Standby setpoints

1

• weekly schedule

• holiday schedule

NOTE: If a T7350H is connected to a wall module with setpoint adjustment, the user will not be allowed to change occupied setpoints through Command Display.

Command manual occupancy, Annunciate T7350H alarms,

Monitor T7350H data:

• Room Temperature

• Active Room Temperature SetPoint

• Occupancy Status

• Operating Mode

• Discharge Air Temperature

• Space Humidity

• Outdoor Temperature

• Heat Stages Active

• Cool Stages Active

• Heat Modulating Output Position

• Cool Modulating Output Position

• Bypass Minutes Remaining

• Auxiliary Relay Status

• Fan Status

33 63-4368


APPENDIX H - T7350H NETWORK VARIABLE SUMMARY

Table 21. T7350H Network Variable Summary.

Nv Name nciApplVer nciBypassTime nciConfig nciConfigPts nciDayLghtSav nciDaySchedule0 nciDaySchedule1 nciDaySchedule2 nciDaySchedule3 nciDaySchedule4 nciDaySchedule5 nciDaySchedule6 nciDaySchedule7 nciDeviceName nciHolSched

L ON S PEC ™ Ref Name

Application version

Bypass Time

NA

NA

NA

NA

NA

NA

NA

NA

NA

NA

NA

Device Name

NA

Class Description

CONFIG Application type: identifies the current application number for this device given by a tool.

0: (Default).

Increment: increased by one whenever any configuration parameter changed by PDA or thermostat keyboard. L

ON

S

PEC

™ and L ON S TATION ™ does not change this field.

0: (Default).

Time Stamp: indicates the last change to the device application configuration. The time stamp meets the ANSI C time stamp requirement specifying the number of seconds elapsed since midnight (0:00:00), January 1, 1970. It is represented in the Intel

Format. If the T7350 keyboard or the PDA Config Tool updates any configuration parameters, the time is incremented.

0: (Default).

Version Number: identifies the version number of the application for this device. If the T7350 keyboard or the PDA Config Tool updates any configuration parameters, is incremented.

0: (Default).

CONFIG Temporary Occupied Override duration in minutes.

180: (Default).

FTP

CONFIG

Thermostat configuration parameters.

FTP

CONFIG

FTP

CONFIG

FTP

CONFIG

FTP

CONFIG

Thermostat operating setpoint values for the control algorithms contained in the Thermostat application code.

Daylight-saving start and end calendar schedule.

Event time schedule for Sunday.

Event time schedule for Monday.

FTP

CONFIG

FTP

CONFIG

FTP

CONFIG

FTP

CONFIG

Event time schedule for Tuesday.

Event time schedule for Wednesday.

Event time schedule for Thursday.

Event time schedule for Friday.

FTP

CONFIG

FTP

CONFIG

Event time schedule for Saturday.

Event time schedule for designated Holiday.

CONFIG Device Name is an 18 character field used to identify the device uniquely as one device at the site or project. The content of Device

Name is maintained by a management node. If Device Name is all

ASCII blanks, it is considered un-configured by Honeywell tools.

ASCII blanks: (Default)

FTP

CONFIG

Holiday calendar schedule.

63-4368 34


Nv Name nciRcvHrtBt nciSetpoints nciSndHrtBt nroPgmVer nroT7350Ver nviApplicMode

Table 21. T7350H Network Variable Summary. (Continued)

L ON S PEC ™ Ref Name Class Description

Controller Receive Time CONFIG Receive heartbeat time (seconds) for all failure detect heartbeat network variables in this node.

0: Disable failure (Default).

300: Typical value in Honeywell system.

Setpoint Config CONFIG Heating and Cooling SetPoints in Celsius engineering units.

Occupied cool set-point.

23.9 C: (Default)

Standby cool set-point.

25.6 C: (Default).

Unoccupied cool set-point.

29.4 C: (Default).

Note:

It is required that:

UnoccCl>=OccCl>=OccHt+1.11 C.

UnoccCl>=StdByCl>=StdByHt+1.11 C.

If the above criteria is not met, then the nciSetpoints received over the L ON W ORKS network will not be accepted, and all the current controlling set points will be restored from the thermostat.

Controller Send Time

Program Version

T7350 Version

Application Mode In

Occupied heat set-point.

21.1 C: (Default).

Standby heat set-point.

19.4 C: (Default).

Unoccupied heat set-point.

12.8 C: (Default).

It is required that:

UnoccHt<=OccHt<=OccCl-1.11 C.

UnoccHt<=StdByHt<=StdByCl-1.11 C.

If the above criteria is not met, then the nciSetpoints received over the L

ON

W

ORKS

network will not be accepted, and all the current controlling set points will be restored from the thermostat.

CONFIG Send heartbeat time (seconds) for all Guaranteed periodic update heartbeat network variables in this node.

0: Disable periodic update (Default).

55: Typical value in Honeywell system.

CONST

CONST

IN

The Honeywell program identifier and subbase firmware version number.

Detailed T7350 cover assembly firmware version information.

Thermostat System mode switch:

0: HVAC_AUTO

1: HVAC_HEAT

3: HVAC_COOL

6: HVAC_OFF

8: HVAC_EMERG_HEAT

Others: Considered to be HVAC_AUTO.

Failure detect and mains power up value: HVAC_AUTO.

35 63-4368


Nv Name nviBypass nviDlcShed nviFanAuto nviFilePos nviFileReq nviInUse



Bypass In

DLC Shed In

FanOnAuto In

File Position In

File Request In

InUse

IN

IN

IN

IN

IN

IN


Remote time bypass input from usually from another device.

Bypass is a method to command unoccupied override over the network from another controller. The other controller does the bypass timing. nviBypass can be used to place the T7350H into temporary occupied mode. This mode will bypass the time of day occupancy schedule in this device.

Value State Action

0 NA Do not bypass the time of day

occupancy schedule.

NA 0 or -1 Do not bypass the time of day

occupancy schedule.

0.5 - 100 1 or Bypass the time of day occupancy

greater schedule.

0 0 Mains power up and fail detect value.

Demand limit duty cycle load shed command from a network device.

When a shed request is received, the thermostat “bumps” the control set point up for cooling and down for heating. The amount of the “bump is a user set point selection. The shed state remains until a DLC restore command is received or network communication is lost. When the unit transitions from shed to restore, the set point is ramped back to the original set point over a period of 60 minutes. The control only sheds when the thermostat is in the occupied mode.

Value:

0: No load shed being called (mains power up or failure detect value).

1 or other values: Call for load shedding.

Auto Fan switch (last in wins).

value = 0, state = don’t care:

Fan is On. value = Don’t care, state = 0 or -1:

Fan is On.

Value = 0.5 - 100: state = 1 or greater:

Fan is On when there is a call for heat / cool.

Failure detect and mains power up value: No change from previous value.

Value State Action

0 NA Fan is ON.

NA 0 or -1 Fan is ON.

0.5 - 100 1 or Fan is ON when there is a call for

greater heat / cool.

no no Mains power up and fail detect value.

change change

Supports L ON M ARK® FTP file transfer. Random Access file Pointer to first byte to be transferred and Number of bytes to transfer.

Supports L

ON

M

ARK®

FTP file transfer. Message request management is communicated through this input variable.

In use number is used by a management node to indicate to all other management nodes that it is “logged on.”

63-4368 36


Nv Name nviManValue nviOccManCmd nviOccSchedule



Manual Value In

Occupancy Cmd In

Occupancy Schedule In

IN

IN

IN


Manual override values for outputs:

Relays: Y1, Y2, Y3, Aux, G, W1, W2, W3

Analog Outputs: Mc, Mh

Manual occupancy is 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).

nviOccManCmd is used to place the T7350H into manual occupancy (note there is no timer associated with nviOccManCmd).

Manual occupancy input from a network device:

0: OC_OCCUPIED

1: OC_UNOCCUPIED

2: OC_BYPASS

3: OC_STANDBY

-1: OC_NUL not connected (mains power up).

Others: same as OC_NUL.

NOTE: If nviOccManCmd is OC_BYPASS and the bypass timer

(nvoData1.bypassTime) times out, then nviOccManCmd is set to OC_NUL.

There are 2 distinct modes of operation: local schedule and network schedule. The local schedule mode causes the T7350H to change set points by using the scheduler in the T7350H. The network schedule mode causes the T7350H to change set points from a network-based scheduler. The network schedule, when valid, overrides the local schedule.

The network schedule input is nviOccSchedule. This input has current state, next state and tuncos (Time Until Next Change of

State). It is bound from another scheduler such as the XL15A or

T7300/Q7300H. The XL15B or a workstation can also write to it in an “unbound” relationship.

If the network schedule is not periodically updated the T7350H resumes local scheduling. Periodically means at a rate greater than the fail detect time. This rate is typically 55 seconds, 300 seconds maximum. (The actual rate and maximum depend on the configured heartbeat and failure detect times.)

Current scheduled occupancy state:

0: OC_OCCUPIED

1: OC_UNOCCUPIED

3: OC_STANDBY


-1: OC_NUL (mains power up and fail detect value).

Next scheduled occupancy state:

0: OC_OCCUPIED

1: OC_UNOCCUPIED

3: OC_STANDBY


-1: OC_NUL (mains power up and fail detect value).

Time in minutes until next scheduled change of occupancy state:

0: (mains power up and fail detect value).

37 63-4368


Nv Name nviOccSensor nviOutdoorTemp nviPgm nviRequest nviSetpoint nviSpaceRH nviSpaceTemp nviTimeSet

Program In

Request

Setpoint In

Time In



Occupancy Sensor In

Outdoor Temperature In

Space Humidity In

Space Temperature In

IN

IN

IN

IN

IN

IN

IN

IN


There are 3 distinct modes of operation: local occupancy sensor, network occupancy sensor, or none.

The network occupancy input is nviOccSensor. It is bound from another sensor or controller with occupancy status.

Occupancy sensor input from a network device:

0: OC_OCCUPIED

1: OC_UNOCCUPIED

-1: OC_NUL not connected (mains power up and fail detect value).


NOTE: If nviOccSensor is not invalid (OC_NUL), nviOccSensor is used as the occupancy sensor even if another sensor or no sensor is configured.

Outdoor temperature input from a network device. Ignored unless nciConfig.oDAirSensor specifies a network configuration.

327.67: means to ignore comODTemp.

327.67: mains power up and failure detect value.

NOTE: If nviOutdoorTemp is not invalid (327.67), nviOutdoor-

Temp is used as the outdoor temperature even if another sensor or no sensor is configured.

Memory address and data being sent to cover assembly flash memory.

Input variable for managing network requests for status.

Desired space temperature (Celsius) set by remote network device.

327.67: means to ignore nviSetPoint.

327.67: mains power up value.

Space humidity input (percent) from a network device. Ignored unless nciConfig.humiditySensor specifies a network configuration.


NOTE: If nviSpaceRH is not invalid (163.83), nviSpaceRH is used as the space relative humidity even if another sensor or no sensor is configured.

When configured for a network sensor and periodically updated, the network space temperature sensor will override both the local and remote sensors.

Space temperature input (Celsius) from a network device. Values less than -2.2 will be clipped to -2.2. Values greater than 60 will be clipped to 60.

327.67: means to ignore nviSpaceTemp.


NOTE: If nviSpaceTemp is not invalid (327.67), nviSpaceTemp is used as the space temperature even if another sensor or no sensor is configured.

Set current month, day, year, hour, minute, second

Time synchronization will be to a network device that has been designated as the “time master.” Time synchronization will occur at the Guaranteed Periodic Update rate (typically every 55 seconds).

63-4368 38


Nv Name nvoAlarmH nvoAlarmLog nvoAlarmStatus



Alarm Out

Alarm Log Out

Alarm Status Out

Class

OUT

OUT

OUT

Description

Alarm subnet, node and type.

Alarm subnet is the LonWorks subnet number in domain entry to which nvoAlarmH is bound. If nvoAlarmH is not bound reports domain index 0.

0: Invalid subnet (power up value).

1-255: Subnet number.

Alarm node is the LonWorks node number (in domain entry to which nvoAlarmH is bound. If nvoAlarmH is not bound reports domain index 0).

0: Invalid entry (power up value).

1-127: Node number.

Alarm type is the alarm type being issued:

0: AT_NO_ALARM (power up value).



3: AT_SENSOR_FAIL











Reports the last five alarms.

Status of the following alarms states:

Communications between the cover and sub-base.


1: The communications between the thermostat cover assembly and the sub-base has failed in one or both directions.

The data from the cover to the sub-base has not been received for at least 90 seconds, or data from the sub-base is not updating the cover assembly.

Output configuration error:


1: The number of outputs configured exceeds the capability of the sub-base to support them. Considers sub-base type, heat pump / conventional application, maxCoolStgs, maxHeatStgs.

Sub-base type error:


1: The sub-base is not a valid sub-base type for the firmware in the cover assembly.

Network Communications Failure:


1: One of the bound network input variables is not being updated periodically. This alarm may be caused by a failed node or a damaged LonWorks network cable.

Sensor failure:


1: One of the analog sensors on the cover assembly has failed or is out of range (high or low).

39 63-4368


Nv Name nvoBypass nvoData1 nvoData2 nvoDischAirTemp nvoEffectOccup nvoEffectSetpt nvoError nvoFileStat nvoHeatCool


Bypass Out nvoData1 nvoData2

Discharge Temperature

Out

Effective Occ Out

Effective Stpt Out nvoError


File Status Out

Application Mode out

Class

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

Description

The T7350H uses nvoBypass to command bypass to other XL10 nodes. When the T7350 is in bypass, it commands nvoBypass.

This is a one to many bound relationship. “Many” means one

T7350H can command bypass on all XL10s connected on the subnet.

Reports whether this device is in timed bypass of the scheduled occupancy state. Used by other devices to also bypass the time of day schedule.

Value State Action

0 0 This device is not in bypass

Power up value

1 100 This device is in bypass

Reports Manufacturer Specific Device Data including: bypassTime, coolStgsOn, DaysLeftKeypadHoliday, dischTemp, effMode, effOccCurrentState, effSetPt, fan, heatStgsOn, oDTemp, percentCmd,Cool, percentCmdHeat, spaceHumidity, spaceTemp, subBaseType, sysMode, terminalLoad.

Reports Manufacturer Specific Device Data including: auxRelay,

DALimit, dehumidActive, ESR, holiday, noAuxHeat1, noAuxHeat2, occSensor, relayAux, relayCool1, relayCool2, relayCool3, relayFan, relayHeat1, relayHeat2, relayHeat3, remoteStPtOffset, schedNextState, scheduledState, scheduledTuncos, stagesActive,

T7350CommWorks, temporarySetPt, totalError.

The current discharge air temperature (Celsius). The sensor is configured by nciConfig.dischAirSensor. A value of 327.67 means the sensor is not functioning correctly or is out of range.

327.67: Power up value.

Current effective occupancy state:

0: OC_OCCUPIED (power up value).

1: OC_UNOCCUPIED

2: OC_BYPASS

3: OC_STANDBY

-1: OC_NUL

Effective room temperature control set point (Celsius).


Device error status. Refer to Appendix C - Network Error

Reporting for details.

File transfer status.

Effective operating mode:

0: HVAC_AUTO

1: HVAC_HEAT (heat or re-heat).

3: HVAC_COOL

6: HVAC_OFF (power up value).

7: HVAC_TEST (manual mode or cover in factory test mode).

8: HVAC_EMERG_HEAT

63-4368 40



Nv Name L ON S PEC ™ Ref Name nvoOccSchedule Time Of Day Out nvoOccSensor nvoOutdoorTemp nvoPgm nvoSpaceRH nvoSpaceTemp

Occupancy Sensor Out

Class

OUT

OUT

Outdoor Temperature Out OUT

Program Out

Space Humidity Out

Space Temperature Out

OUT

OUT

OUT

Description

This output has current state, next state and tuncos (Time Until

Change of State). This output is typically bound to other controller(s) that need a schedule command.

This output is the combination of the local schedule and the network schedule command. It doesn’t include any bypass, override, or manual occupancy commands that affect this T7350H.

There is no TOD assignment table in the T7350H. The T7350H allows a one to many binding of nvoOccSchedule. This means one T7350H can command all of the XL10s on the subnet – up to

119 controllers.

Current scheduled occupancy state:

0: OC_OCCUPIED

1: OC_UNOCCUPIED

3: OC_STANDBY

-1: OC_NUL (power up value).

Next scheduled occupancy state:

0: OC_OCCUPIED (power up value).

1: OC_UNOCCUPIED

3: OC_STANDBY

-1: OC_NUL (power up value).

Time in minutes until next scheduled change of occupancy state:

2880: Means there is not a next change of occupancy state or it is longer than 2 days from now (Power up value).

Status of occupancy sensor:

0: OC_OCCUPIED

1: OC_UNOCCUPIED

-1: OC_NUL (not configured and power up value).

The current outdoor temperature (Celsius). The sensor source is specified by nciConfig.oDAirSensor. A value of 327.67 means the sensor is not functioning correctly or is out of range.


Cover assembly flash memory programming data.

The current space humidity (percent). The sensor source is specified by nciConfig.humiditySensor. A value of 163.84 means the sensor is not functioning correctly or is out of range.


The current space temperature (Celsius). The sensor source is specified by nciConfig.spaceSensor. A value 327.67 means the sensor is not functioning correctly or is out of range.

327.67: power up value.

41 63-4368


Nv Name nvoStatus nvoTerminalLoad nvoTime


Status

Terminal Load Out

Time Out


Class

OUT

OUT

OUT

Description

Status:

Alarm notify disabled:

0: Alarm notification is turned on (power up value).

1: Alarm notification via nvoAlarmH, nvoAlarmLog, nvoUnitStatus, and nvoStatus has been turned off.

Alarm

0: no alarm (power up value).

1: there is an alarm.

Override the delays associated with automatic control:

0: Delays turned on (power up value).

1: Delays turned off (Useful for troubleshooting).

Invalid ID:

0: The request was for a valid ID (Power up value).

1: The request was not for a valid ID.

Invalid Request:

0: The request was for a valid operation (Power up value).

1: Invalid request for an operation.

Manual control:

0: The function block is in automatic operation (power up value).

1: The function is in manual operation and outputs respond to nviManValue.

Status report. Function block number being in status report:

0: Node function block.

1: Space comfort controller function block.

Programming Mode:

0: Normal operating mode (power up value).

1: The node is in the “programming the cover flash memory” mode, and is not automatically controlling temperature.

Report mask:

0: Normal operation (power up value).

1: RQ_REPORT_MASK received. The status bits that are set have been implemented.

Terminal load (percent): Reports the demand for supply energy.

Positive numbers are cooling demand and negative numbers are heating demand. 100 percent is full capacity. Terminal loads greater than 100 percent or less than -100 percent indicate that the equipment is not able to supply the required heating or cooling energy. The valid range is between 163 and minus 163 percent.

Terminal load is used by supervisory level control applications to reset Boiler or Chiller discharge water temperatures.

163.84: Power up condition.

Current year, month, day, hour, minute, second.

The T7350H can be a time master to other T7350Hs, XL15As, and

Q7300s.

63-4368 42


Nv Name nvoUnitStatus



Unit Status

Class

OUT

Description

Unit Status:

Percentage of cooling capability currently being supplied to the controlled space.


Fan turned on or off:

0: Fan not running.

100: Fan running.

163.84: (power up value).

Percentage of auxiliary heating capability currently being supplied to the controlled space (Applies to heat pump application only):


Alarm report:

0: No alarms reported in the unit (power up value).

1: One or more alarms reported in the unit.

-1: The Alarms have been suppressed by alarm notified disabled command.

Effective operating mode:

0: HVAC_AUTO (power up value).

1: HVAC_HEAT

3: HVAC_COOL

6: HVAC_OFF (power up value).

7: HVAC_TEST (manual mode or cover in factory test mode).

8: HVAC_EMERG_HEAT

43 63-4368



CONFIG: LonMark network configuration parameters

FTP CONFIG: Configuration parameters implemented with the LonMark file transfer protocol

IN: Network variable inputs.

OUT: Network variable outputs.

ZIRE and TUNGSTEN are trademarks of palmOne, Inc.

HotSync and Palm OS are registered trademarks of PalmSource, Inc.

Palm is a trademark of PalmSource, Inc.

TRGPro is a trademark of HandEra, Inc.

L ON M ARK® , L ON T ALK

®

, and L ON W ORKS® are registered trademarks of Echelon

®

Corporation.

LonSpec™, and LonStation™ are trademarks of Echelon

®

Corporation.

Automation and Control Solutions

Honeywell International Inc.

Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North 35 Dynamic Drive

Golden Valley, MN 55422 Scarborough, Ontario

M1V 4Z9

Honeywell International

Control Products

Honeywell Building

Honeywell Europe S.A. Honeywell Latin American

3 Avenue du Bourget Region

1140 Brussels 480 Sawgrass Corporate Parkway

17 Changi Business Park Central 1 Belgium

Singapore 486073

Suite 200

Sunrise FL 33325

63-4368 B.B. 11-04 www.honeywell.com

Honeywell T7350 User's Manual

T7350

Commercial Programmable Thermostat

SYSTEM ENGINEERING

Contents

INTRODUCTION

Device Description

Control Application

Network Control Provided

MODELS

Products Covered

Applicable Literature

ABBREVIATIONS AND DEFINITIONS

®

Performance Specifications

Communications

L ON M ARK®

Functional Profile

NETWORK CONFIGURATIONS

APPLICATION STEPS

Overview

Step 1. Plan the System

Step 2. Determine Required Network Devices

Step 3. Layout Communications and Power

Wiring:

L ON W ORKS®

Bus Layout

Cable Termination

Singly Terminated Network Segment

Doubly Terminated Daisy-Chain Network Segment

CAUTION

Wiring Details

Step 4. Prepare Wiring Diagrams

General Considerations

Step 5. Order Equipment

Step 6. Configure T7350

Step 7. Troubleshooting

APPENDIX A - NETWORK TOOLS & WORKSTATIONS

APPENDIX B - NETWORK ALARM REPORTING

Identifying Five Most Recent T

APPENDIX C - NETWORK ERROR REPORTING

Reporting T

Reporting T

APPENDIX D - NETWORK ACCESS TO LOCAL SENSOR DATA

APPENDIX E - SCHEDULING

NETWORK DEVICES

APPENDIX F - NETWORK MASTER

CLOCK

APPENDIX G - NETWORK CONNECTIONS TO OTHER LCBS DEVICES

S7760 - Command Display

APPENDIX H - T7350H NETWORK VARIABLE SUMMARY

Class Description

Related manuals

Honeywell

Thermostat T7350

Honeywell

T7350

Honeywell

3253

Honeywell

T7350

Table of contents