Honeywell W7752D specifications Controller Performance Specifications

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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE

Controller Performance Specifications

Power:

W7752D and W7752E; W7754K,M,N,P

230 Vac +10%, -15%, 50/60 Hz.

W7752F and W7752G

115 Vac +10%, -15%, 50/60 Hz.

W7752J

100 Vac ±6%, 50/60 Hz.

W7754L

24 Vac ±20%, 50/60 Hz.

Operating Temperature:

32...122°F (0...50°C).

Shipping/Storage Temperature:

-40...+158°F (-40...+70°C).

Relative Humidity:

5% to 95% non-condensing

Inputs:

Temperature Sensor: 20k ohm NTC

Setpoint Potentiometer: 10k ohm

Digital Input:

Closed 400 ohms

Open 10 K ohms

Outputs:

Triac voltage range: 24 Vac ± 20%.

Triac max. current ratings: 250 mA continuous

650 mA surge for 30 sec.

IMPORTANT:

When any device is energized by a triac, the device must be able to sink a minimum of 15 mA. If non- Honeywell motors, actuators, or transducers are to be used with Excel 10 FCU Controllers, compatibility must be verified.

Fan relays voltage range: 20 to 253 Vac

Fan relays max. current rating: 3 A

Electric reheat relay voltage range: 20 to 253 Vac

Electric reheat relay max. current rating: 10 A

6 A (UL916)

Interoperability

The Excel 10 FCU Controllers use the LonTalk protocol. They support the LONMARK Functional Profile # 8020 “Fan Coil Unit Controller”, version 2.0. Fig. 8 shows the implementation used.

Hardware

Output

Fan Coil Unit Controller

Object #8020

nv1

 

nviSpaceTemp

 

nv3

nvoHeatOutput

 

SNVT_temp_p

 

SNVT_lev_percent

 

 

Mandatory

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nviSetPoint

Network

nv4

nvoCoolOutput

 

 

nv2

 

Variables

SNVT_lev_percent

 

SNVT_temp_p

 

 

 

 

 

 

 

 

 

 

 

 

nv5

nvoFanSpeed

 

 

 

 

 

 

 

 

 

 

SNVT_switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nv6

 

nviFanSpeedCmd

 

nv11

nvoTerminalLoad

 

 

 

SNVT_switch

 

SNVT_lev_percent

 

 

nviOccCmd

 

nv12

nvoLoadAbs

 

 

 

 

 

 

nv7

 

 

SNVT_power

 

 

SNVT_occupancy

Optional

 

 

 

 

 

 

 

 

nvoDischAirTemp

 

 

 

 

 

 

 

nviApplicMode

Network

nv13

nv8

 

Variables

 

SNVT_temp_p

 

SNVT_hvac_mode

 

 

 

 

 

 

 

 

 

 

 

 

 

nv14

nvoReheat

 

 

 

 

 

nv9

 

nviSetPtOffset

 

SNVT_switch

 

 

 

 

 

 

SNVT_temp_p

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nv15

nvoSpaceTemp

 

 

 

 

 

nv10

 

nviWaterTemp

 

SNVT_temp_p

 

 

 

 

 

 

 

 

SNVT_temp_p

 

 

nvoEffectSetPt

 

 

 

 

 

nv16

 

 

 

 

 

nv17

 

nviDischAirTemp

 

SNVT_temp_p

 

 

 

 

 

 

 

 

SNVT_temp_p

 

 

nvoEffectOcc

 

 

 

 

 

nv19

nv18

 

nviEnergyHoldOff

 

 

SNVT_occupancy

 

 

 

 

 

 

 

 

 

SNVT_switch

 

nv20

nvoEnergyHoldOff

 

 

 

 

 

 

 

 

 

 

SNVT_switch

 

 

 

 

 

 

 

 

 

 

nv21

nvoUnitStatus

 

 

 

 

 

SNVT_hvac_status

Configuration Properties

nc49 - nciSndHrtBt

SNVT_time_sec

mandatory

nc52 - nciMinOutTm SNVT_time_sec

optional

 

nc48 - nciRcvHrtBt

SNVT_time_sec

optional

 

nc17 - nciLocation

SNVT_str_asc

optional

nc60 - nciSetPnts

SNVT_temp_setpt

mandatory

nc59 - nciNumValve SNVT_count

optional

 

 

 

 

 

nviSensorOcc

Manufacturer

nvoSensorOcc

SNVT_Occupancy

Defined

SNVT_occupancy

Section

nviEmerg

nvoDigitInState

SNVT_hvac_emerg

SNVT_switch

 

nviReheatRelay

 

SNVT_switch

 

Hardware

Input

NOT SUPPORTED.

Fig. 8. LONMARK FCU object profile

11

EN2B-0285GE51 R0909

Image 13
Contents Excel Appendix B Configuring for Master/Slave Operation Appendix a Using An LNS tool to Commission a Fan Coil UnitAppendix C LON Interface Revision History Typical system overview Description of DevicesOrganization of Manual Products CoveredApplicable Literature Product NamesControl Provided Control ApplicationSetpoint Knob SetpointsSetpoint Limits Setpoint from NetworkZEB Bypass Energy-Saving FeaturesOccupancy Status Operating Modes Safety FeaturesExcel 10 W7752 FCU Controllers ConstructionExcel 10 W7754 FCU Controllers Electrical Shock Hazard180 Controller Performance Specifications General ConfigurationsFan Type Type of Heating and Cooling Equipment Digital Input Reheat OutputExcel 10 Wall Module Options Common Temperature Control Master/Slave ControllersAbbreviations and Definitions Plan the System OverviewDetermine Other Bus Devices Required Step No DescriptionLonworks Layout Lay Out Communications and Power WiringPower Wiring Prepare Wiring DiagramsGeneral Considerations Power WiringVendor wire type PlenumLOW 230 XAL-Term ONW Orks TerminationExcel 10 Wall Modules Order EquipmentExcel 10 Sensors Echelon-Based Components and PartsUsing Plug-Ins Configure ControllersOutput Input Fan Equipment ControlZone Options Switching LevelsMiscellaneous Troubleshooting Excel 10 FCU Controllers and Wall Modules TroubleshootingAlarms CommissioningReturntonormal FCU AlarmsManual Mode Broadcasting the Service MessageProcedure Temperature Sensor CalibrationInput Configuration Options Output Configuration OptionsZone Control Options Network Variable BindingAppendix C LON Interface Page NV name Continuous Automode To 100% For the reheat output EN2B-0285GE51 R0909 Byte Ntcnonlinearize NoswitchNtcnonlinearized Byte FivepositionDiwindowclosed Byte DinotusedDioccupiedsensor DiairflowOnestage Byte FloatingTwostage ThreestageFreeuse Byte ReheatRelnotused Twopipe FourpipeUword Absolutemiddle OffsetBypassunoccupie NobuttonTable C3. Input Variables for Excel 10 FCU Controllers Modedisable Modeenable UnsuppressalarmsSuppressalarms OcnulOFF NUL Rqnormal Rqupdatestatus Rqupdatealarm RqreportmaskInvalid OFF1OFF2 Byte NormalhcmodeON1OFF2 OFF1ON2Ledoff Ledon Byte NormalfanmodeClosed NowindowOpen Table C4. Output Variables for Excel 10 FCU Controllers Alarmnotifydisabled RtncomfailtempresetRtncomfailsetptoffs RtncomfailschedoccOFF Notassigned Almcomfailmanheat Almcomfailmancool AlmhwswmismatchOcbypass Ocstandby Fieldeffectocc OFF Nofanspeedsw UbyteFieldhwoverride FieldschedoccCtldisabled CtlfanswitchoffOcunoccupied Ocbypass Ocstandby Ocunoccupied Ocbypass Ocstandby OcnulFanoffafteroncmd Not Actice ActiveFanruns ExternalnotacticeSton StoffInvalid Uword Notpressed OFF NoreheatPressed Contactopen Contactclosed UwordInvalid Byte Initial Stlow Stmed SthighDisabled EnabledNoalarm InalarmOpen Nowindow Alarm Suppressalarms AlarmnotifydisabledBugver Nodetype Word Table C5. Unused Variables for Excel 10 FCU ControllersAutomation and Control Solutions

W7752D specifications

The Honeywell W7752D is a versatile and advanced electronic gas combination control designed primarily for use in commercial heating systems. This product stands out for its ability to manage both gas ignition and safety functions, which are critical for maintaining the efficiency and safety of heating appliances. Its robust construction and advanced features make it a popular choice for HVAC professionals and service technicians.

One of the main features of the W7752D is its integration of multiple functions in a single device. It serves as both an automatic gas ignition control and a safety shut-off valve, which simplifies installation and reduces the need for additional components. This integrated design not only enhances reliability but also streamlines maintenance procedures.

Another notable technology utilized in the W7752D is its microprocessor-based control logic. This advanced technology allows for precise management of the ignition sequence, improving the overall efficiency of the heating system. The microprocessor enables the control to adapt to varying operating conditions, ensuring optimal performance even under changing demands.

The W7752D is equipped with features that enhance user-interface and diagnostics capabilities. It includes LED indicators that provide clear information about the operational status and any potential issues. This diagnostics capability facilitates easier troubleshooting, saving time and reducing the likelihood of extended downtimes.

Safety is a primary concern in gas appliances, and the W7752D addresses this with built-in safety mechanisms, including flame detection technologies. These features ensure that the appliance operates safely, automatically shutting down in case of any irregularities during operation. This emphasis on safety not only protects property but also provides peace of mind for users.

In terms of compatibility, the Honeywell W7752D is designed to work with a wide range of gas heating appliances. Its flexibility allows it to be used in various applications, making it suitable for different types of commercial environments. Additionally, the control complies with relevant safety and performance standards, ensuring reliable operation.

In summary, the Honeywell W7752D combines advanced technology with essential safety features, making it a top choice for commercial heating applications. Its integrated design, microprocessor-based control, user-friendly diagnostics, and robust safety mechanisms make it an essential component for efficient and safe gas heating systems. Whether it is for new installations or replacements, the W7752D provides HVAC professionals with the reliability and ease of use they demand.