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Sequence of Operation

Fan Coil

CARRIER CORPORATION ©2020

Integration Guide

All rights reserved

26

Thermostat Linkage

The Fan Coil uses one wall-mounted SPT-type sensor to control multiple units using

Thermostat Linkage

. A single

unit is selected as a master and configured for the total number of linked units (including the master). The slave

units must be sequentially addressed, below the master’s address.

The master sends the setpoints, occupancy status, space temperature, and optional sensor value from the master
to the slave units. Each slave then sends its operating mode and supply air temperature. If a local sensor for
either RH or CO

2

is provided, the value at the slave fan coil, rather than the value received through

Thermostat

Linkage,

is used.

Each slave sends its operating mode and supply air temperature. When using

Thermostat Linkage

, the units do

not need to be the same type or have the same coils. Each unit may be independently configured for coil types,
fan operation, etc.

Thermostat Linkage

is designed to support a maximum of 8 units operating together, using a

single SPT sensor.

Airside Linkage

The Fan Coil receives information through

Airside Linkage

and operates as an air source for a sub-zoned system

using VVT terminals. The fan coil becomes the equipment master and receives its setpoints, occupancy, and
space temperature from the zoning system. If the optional CO

2

or RH sensors is connected to any zone, the fan

coil also receives this data through Linkage.

NOTE

Do not connect a RH or CO

2

sensor to the fan coil unit if you use

Airside Linkage

. The local value is

overridden by Linkage.

The fan coil uses this information to provide the air required to satisfy the load in the zones. The operating mode
and supply air temperature of the fan coil is sent to all the zones in the system.

Airside Linkage

has the highest

priority and overrides both local control and

Thermostat Linkage

.

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Содержание Fan Coil

Страница 1: ...F Fa an n C Co oi il l I In nt te eg gr ra at ti io on n G Gu ui id de e CARRIER CORPORATION 2020 Catalog No 11 808 540 01 10 29 2020 ...

Страница 2: ...ystems com or your local Carrier office Important changes are listed in Document revision history at the end of this document CARRIER CORPORATION 2020 All rights reserved throughout the world i Vu is a registered trademark of Carrier Corporation All other trademarks are the property of their respective owners ...

Страница 3: ...r for LonWorks communication 16 Troubleshooting LonWorks communication 17 Start up 18 Sequence of Operation 19 Scheduling 19 Indoor fan 20 Cooling 21 Heating 22 Changeover mode detection 23 Indoor air quality 24 Dehumidification 25 Demand Limiting 25 Thermostat Linkage 26 Airside Linkage 26 Compliance 27 FCC Compliance 27 CE Compliance 27 BACnet Compliance 27 Appendix A Fan Coil Network Points Lis...

Страница 4: ...Contents ...

Страница 5: ...Fan Coil controller is available as an integrated component of a Carrier packaged unit Its internal application programming provides optimum performance and energy efficiency Fan Coil enables the unit to run in 100 stand alone control mode or it can communicate to the Building Automation System BAS Introduction ...

Страница 6: ...N 2020 Integration Guide All rights reserved 2 Safety considerations WARNING Disconnect electrical power to the Fan Coil before wiring it Failure to follow this warning could cause electrical shock personal injury or damage to the controller ...

Страница 7: ...y Contact N A Overflow Contact BI IN 6 1 Gnd Condensate Overflow Switch Dry Contact N A OA Damper AO AO 1 2 Gnd Outdoor Air Damper 0 10 Vdc 2 10 Vdc N A 2 Pipe Valve Heating Valve AO AO 2 4 Gnd 2 Pipe Valve Heating Coil Valve 0 10 Vdc N A Cooling Valve AO AO 3 6 Gnd Cooling Valve 0 10 Vdc N A Fan High Spd BO BO 1 1 Pwr High Speed Fan Stage 2 EH Relay N A Fan Med Spd BO BO 2 1 Pwr Medium Speed Fan ...

Страница 8: ...t MS TP N2 Modbus and through the Option Card port for the LonWorks Option Card NOTES Changing protocol requires no programming or point assignment by the installer or operator Power must be cycled after changing the Comm Selector DIP switches or connecting the LonWorks Option Card Comm Selector DIP switch settings for protocols and baud Protocol Baud Rate 3 4 1 2 BACnet MS TP Default Off Off Sele...

Страница 9: ...dress Set the Tens 10 s switch to the tens digit of the address and set the Ones 1 s switch to the ones digit EXAMPLE If the controller s address is 25 point the arrow on the Tens 10 s switch to 2 and the arrow on the Ones 1 s switch to 5 10 s 1 s 1 3 4 5 2 7 8 9 6 0 1 3 4 5 2 7 8 9 6 0 NOTE The Fan Coil recognizes its address only after power has been cycled 3 Set communications selector for EIA ...

Страница 10: ...izes MS TP network communications by preventing token passes and poll for master requests to non existent Master nodes In the above example MAC address 16 knows to pass the token back to MAC address 1 instead of counting up to MAC address 127 Each MS TP master node on the network must have their Max Masters set to this same value The default is 127 Max Info Frames defines the maximum number of res...

Страница 11: ...navigate to the Properties Menu screen and click Login NOTE The following graphic is generic and not specific to your system 2 Type Touch for the password and click Done 3 On the Properties Menu screen scroll to the bottom of the list and click ET System 4 On the ET System screen click Setup 5 On the Setup screen click Module Setup 6 On the Module Setup screen click Communication On the Communicat...

Страница 12: ...ll of the steps and use the following list to check your settings Verify accuracy of the following Hardware settings for BACnet MS TP 8 Data bits No Parity and 1 Stop bit Baud rate DIP switches 1 and 2 BACnet MS TP protocol DIP switches 3 and 4 Jumper set to EIA 485 Proper connection wiring Unique rotary address switches 1 99 If controllers have duplicate addresses network communication can be los...

Страница 13: ... digit EXAMPLE If the controller s address is 25 point the arrow on the Tens 10 s switch to 2 and the arrow on the Ones 1 s switch to 5 10 s 1 s 1 3 4 5 2 7 8 9 6 0 1 3 4 5 2 7 8 9 6 0 NOTE The Fan Coil recognizes its address only after power has been cycled 3 Set communications selector for BACnet ARC156 4 Set the both DIP switches 3 and 4 OFF for BACnet ARC156 NOTE The baud rate for BACnet ARC15...

Страница 14: ... check your settings Verify accuracy of the following Protocol DIP switches 3 and 4 Proper connection wiring Unique rotary address switches 1 99 If controllers have duplicate addresses network communication can be lost Unique BACnet Device Instance numbers Default is 16101XX with the rotary address switches defining XX If controllers have duplicate device instance numbers network communication can...

Страница 15: ...ch to 2 and the arrow on the Ones 1 s switch to 5 10 s 1 s 1 3 4 5 2 7 8 9 6 0 1 3 4 5 2 7 8 9 6 0 NOTE The Fan Coil recognizes its address only after power has been cycled 3 Set communications selector for EIA 485 4 Set DIP switches 1 and 2 for the appropriate communications speed See table below NOTE Use the same baud rate for all devices on the network segment Baud Rate 1 2 9 600 bps Off Off 19...

Страница 16: ...ts No Parity and 1 Stop bit Baud rate DIP switches 1 and 2 Protocol DIP switches 3 and 4 Jumper set to EIA 485 Proper connection wiring Unique rotary address switches 1 99 If controllers have duplicate addresses network communication can be lost NOTES If RX LED is solid then the terminations are incorrect If the network has greater than 32 devices or exceeds 2 000 feet a Repeater should be install...

Страница 17: ... communications selector for EIA 485 4 Set both DIP switches 1 and 2 OFF for 9600 bps NOTE Use the same baud rate for all devices on the network segment 5 Set the DIP switches 3 ON and 4 OFF for N2 The following example is set for 9600 bps and N2 6 Connect the communications wiring to the Comm port in the screw terminals labeled Net Net and Shield Wire specifications A dedicated 22 AWG shielded tw...

Страница 18: ...munication can be lost Unique BACnet Device Instance numbers Default is 16101XX with the rotary address switches defining XX If controllers have duplicate device instance numbers network communication can be lost NOTES If RX LED is solid then the terminations are incorrect If the network has greater than 32 devices or exceeds 2 000 feet a Repeater should be installed If a controller begins or ends...

Страница 19: ...rounded Refer to Appendix E for the LonWorks Protocol Implementation Conformance Statement PICS To set up the Fan Coil for the LonWorks Option Card LON OC 1 Turn off the power for the Fan Coil by disconnecting power terminals 2 Using the rotary switches set a unique address Set the Tens 10 s switch to the tens digit of the address and set the Ones 1 s switch to the ones digit EXAMPLE If the contro...

Страница 20: ... be commissioned Commissioning allows the system integrator to associate the device hardware with the LonWorks system s network layout diagram This is done using the device s unique Neuron ID A network management tool such as Echelon s LonMaker is used to commission each device as well as to assign addressing Specific instructions regarding the commissioning of LonWorks devices should be obtained ...

Страница 21: ...fy accuracy of the following Hardware settings for LonWorks 8 Data bits No Parity and 1 Stop bit Baud rate DIP switches 1 and 2 set to 38 4 kbps LonWorks protocol DIP switches 3 and 4 Jumper set to EIA 485 when using the LonWorks Option Card LON network terminated on LonWorks Option Card pins 1 and 2 NOTES If RX LED is solid then the terminations are incorrect If the network has greater than 32 de...

Страница 22: ...lable only for BACnet MS TP systems Wire to a BACnet MS TP network connector and a 24 Vac power supply 3 Temporary or permanent interface 1 Requires a USB Link Part USB L 2 See the Equipment Touch Installation and Setup Guide for detailed instructions 3 See the System Touch Installation and Setup Guide for detailed instructions CAUTION If multiple controllers share power but polarity was not maint...

Страница 23: ...ing to Configuration Unit Configuration Occupancy Schedules and changing the point from Enable to Disable and clicking OK NOTE You must Enable this point in order for the Equipment Touch Field Assistant or the i Vu application to assign a time schedule to the controller Schedule The unit operates according to the schedule configured and stored in the unit The schedule is accessible in the Equipmen...

Страница 24: ...ols up to 3 fan speeds using a Fan Interface board or field installed relays The fan motor operates at the lowest speed possible to provide quiet and efficient fan operation with the best latent capability during cooling The motor increases speed if additional cooling or heating is required to reach the desired space temperature setpoint The motor s speed increases as the space temperature rises a...

Страница 25: ...nd the equipment s OAD is disabled If the equipment has hydronic heat configured the heating algorithm maintains the desired fan off setpoint Cooling The Fan Coil operates one stage of DX cooling or chilled water valve 2 position or modulating to maintain the desired cooling setpoint The PI Proportional integral cooling algorithm controls the cooling The desired Supply Air Temperature setpoint Coo...

Страница 26: ...order to maintain the desired cooling setpoint The DX stage is controlled so the SAT does not exceed the Minimum Cooling SAT limit and is subject to a 4 minute minimum on time The compressor output is not energized unless the SAT is Minimum Cooling SAT limit plus 15 F 8 3 C Once disabled the compressor cannot be restarted for at least 5 minutes Heating The Fan Coil operates one stage of electric h...

Страница 27: ...tage Electric Heat The control can operate a single stage of electric heat in order to maintain the desired heating setpoint The heat stage is controlled so the SAT does not exceed the Maximum Heating SAT limit The electric heat output is not energized unless the SAT is Maximum Heating SAT limit minus 15 F 8 3 C and once disabled cannot be restarted for at least 2 minutes to prevent excessive cycl...

Страница 28: ...m damper position insures that proper base ventilation is delivered when occupants are not present If the additional outdoor air being introduced for ventilation causes an unacceptable drop in the supply air temperature or could cause a coil freeze up condition then the control can be set to temper the supply air during DCV control Reheat Enable must be set to Enable and 2 Pipe Changeover must be ...

Страница 29: ...gured Temper Reheat SAT setpoint This prevents overcooling of the space as long as the space temperature remains at least 1 F 17 2 C below the occupied cooling setpoint Dehumidification is disabled if the SPT falls below the Occupied Heating Setpoint The following conditions must be true for this algorithm to run Cooling is set to Enable Space temperature reading is valid OAT is greater than the C...

Страница 30: ...nits do not need to be the same type or have the same coils Each unit may be independently configured for coil types fan operation etc Thermostat Linkage is designed to support a maximum of 8 units operating together using a single SPT sensor Airside Linkage The Fan Coil receives information through Airside Linkage and operates as an air source for a sub zoned system using VVT terminals The fan co...

Страница 31: ...terference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense CAUTION Changes or modifications not expressly approved by the responsible party for compliance could void the user s authority to operate the equipment CE Compliance WARNING This is a Cla...

Страница 32: ...ation tree and go to Properties BACnet Objects tab When an i Vu Open controller or a third party system writes to any of the system points you must use BACnet Priority Level 16 and the value must not be written to or refreshed more than once per minute 60 seconds CAUTION If any other Priority Level is used the value will not be recognized by the controller BACnet System Points Display Name Valid R...

Страница 33: ...BAS should never read back the system point s value to confirm the commanded value was successfully received To confirm a write refer to the table below for the corresponding control point that should be read NOTE A confirming read should take place at least 30 seconds following the write to verify that the write has been processed by the controller Commanded Points Control Points Display Name Typ...

Страница 34: ... Setpoint R F eff_cl_stpt AV 3005 Input Register Float 55 Effective Heat Setpoint R F eff_ht_stpt AV 3006 Input Register Float 57 Filter Service Alarm Timer R W hr 600 filter_service_hrs AV 2019 Holding Register Float 67 Heating Lockout Temperature R W F 65 oat_ht_lockout AV 9003 Holding Register Float 69 Heating Output R htg_output AV 2026 Input Register Float 37 Occ Relative Humidity Setpoint R ...

Страница 35: ...ow_alarm BV 7028 Discrete Input 60 Cool Enable R W Disable Enable Active 1 cl_enable BV 1011 Coil 36 Dehumidification R Inactive Active dehum_status BV 2006 Discrete Input 9 Filter R 0 Normal 1 Alarm filter_alarm BV 7017 Discrete Input 31 Fire Smoke Shutdown R 0 Normal 1 Alarm fire_alarm BV 7007 Discrete Input 32 Heat Enable R W Disable Enable Active 1 ht_enable BV 1012 Coil 37 High Space Temperat...

Страница 36: ...3003 Holding Register Float 15 Setpoint R W F unocc_ht_stpt AV 3004 Holding Register Float 17 Vent Dmpr Pos DCV Min Pos R W 20 econ_min AV 4005 Holding Register Float 131 Indoor Air Quality CO2 ppm R ppm iaq AV 1009 Input Register Float 73 Freezestat R 0 Normal 1 Alarm llt_alarm BV 7037 Discrete Input 7 Space Temp Sensor R 0 Normal 1 Alarm spt_fail BV 7001 Discrete Input 46 Outdoor Air Temp Sensor...

Страница 37: ...upply Air Temp R F link_sat AV 2608 Airside Linkage R 0 Normal 1 Alarm air_linkage_fail BV 7030 Fan Off Delay R W seconds 90 fan_delay_off AV 9024 Changeover Sensor R 0 Normal 1 Alarm chgovr_fail BV 7034 Freezestat R 0 Normal 1 Alarm frz_status BV 2009 Filter Runtime R hr filter_rntm AV 2015 Airside Linkage R Not Active Active a_link_status BV 2601 Fan On Delay R W seconds 10 fan_delay_on AV 9025 ...

Страница 38: ...il Restart Delay R W seconds 5 ADF 58 SNVT_count_inc 9 nviUntStrDly Return Air Temperature R F ADF 50 SNVT_temp_p 105 nvoRtnAirTmp Outdoor Air Temperature R F ADF 38 SNVT_temp_p 105 nvoOAT Setpoint R W F ADF 4 SNVT_temp_p 105 nviOccCoolSP Setpoint Adjustment R F ADF 44 SNVT_temp_p 105 nvoSPAdjust Setpoint Adjustment Range R W F 5 ADF 45 SNVT_temp_p 105 nviSPAdjRng Space Relative Humidity R rh ADF ...

Страница 39: ...m BI 39 SNVT_switch 95 nvoLoSpTmp Occupancy Status R Unoccupied Occupied BI 18 SNVT_switch 95 nvoOccStatus Reheat Enable R W Disable Enable Inactive 0 BO 4 SNVT_switch 95 nviRehtEnbl Reset Filter Alarm R W 0 Off 1 On Inactive 0 BO 22 SNVT_switch 95 nviRstFilAlm Return Air Temperature R 0 Normal 1 Alarm BI 21 SNVT_switch 95 nvoRatAlm Setpoint Adjustment R W Disable Enable Active 1 BO 26 SNVT_switch...

Страница 40: ... nviUnoccClSP Setpoint R W F ADF 8 SNVT_temp_p 105 nviUnoccHtSP Vent Dmpr Pos DCV Min Pos R W 20 ADF 60 SNVT_lev_percent 81 nviDCVMinPos Indoor Air Quality CO2 ppm R ppm ADF 31 SNVT_ppm 29 nvoIAQ Freezestat R 0 Normal 1 Alarm BI 7 SNVT_switch 95 nvoFreezeAlm Space Temp Sensor R 0 Normal 1 Alarm BI 46 SNVT_switch 95 nvoSPTmpSen Outdoor Air Temp Sensor R 0 Normal 1 Alarm BI 27 SNVT_switch 95 nvoOatF...

Страница 41: ...ide All rights reserved 37 N2 LonWorks Point Name Point Access Units Default Value N2 Network Point Type N2 Network Point Address SNVT Type SNVT Name Supply Fan Status R 0 Off 1 On BI 24 SNVT_switch 95 nvoFanStatus ZS Sensor Configuration R 0 Normal 1 Alarm BI 63 SNVT_switch 95 nvoZsCfgFl ...

Страница 42: ... CORPORATION 2020 Integration Guide All rights reserved 38 The PIC statements are updated regularly Please refer to the BACnet website http www bacnetinternational net catalog index php m 28 for the latest information Appendix B BACnet Protocol Implementation Conformance Statement ...

Страница 43: ... device binding supported This is currently necessary for 2 way communication with MS TP slaves and certain other devices XX Yes Networking Options Router Clause 6 List all routing configurations e g ARCNET Ethernet Ethernet MS TP etc ARCNET MS TP ARCNET MS TP UDP IP Annex H 3 BACnet Tunneling Router over UDP IP BACnet IP Broadcast Messaging Device BBMD Does the BBMD support registrations by Forei...

Страница 44: ...puts BI Analog Outputs AO Binary Outputs BO Internal Floats ADF Internal Integers ADI Internal Bytes BD Protocol Commands Identify Device Type Write Analog Input Sync Time Write Binary Input Poll Without Acknowledge Write Analog Output Poll With Acknowledge Write Binary Output Read Analog Input Write Internal Parameter Read Binary Input Override Analog Input Read Analog Output Override Binary Inpu...

Страница 45: ... Outputs single 00001 09999 06 Preset Single Register Write Holding Registers single 40001 49999 15 Force Multiple Coils Write Discrete Outputs 00001 09999 16 Preset Multiple Coils Write Holding Registers 40001 49999 Register Type Range Function Codes Used with this Register Type Float Value FLOAT Single Precision IEEE floating point value 3 Read Holding Register 6 Preset Single Register 16 Preset...

Страница 46: ...T_speed_mil SNVT_alarm_2 SNVT_evap_state SNVT_motor_state SNVT_state SNVT_amp SNVT_ex_control SNVT_muldiv SNVT_state_64 SNVT_amp_ac SNVT_file_pos SNVT_multiplier SNVT_str_asc SNVT_amp_f SNVT_file_req SNVT_obj_request SNVT_str_int SNVT_amp_mil SNVT_file_status SNVT_obj_status SNVT_switch SNVT_angle SNVT_fire_indcte SNVT_occupancy SNVT_telcom SNVT_angle_deg SNVT_fire_init SNVT_override SNVT_temp SNV...

Страница 47: ..._mode SNVT_length_micr SNVT_res SNVT_volt_dbmv SNVT_defr_state SNVT_length_mil SNVT_res_f SNVT_volt_f SNVT_defr_term SNVT_lev_cont SNVT_res_kilo SNVT_volt_kilo SNVT_density SNVT_lev_cont_f SNVT_rpm SNVT_volt_mil SNVT_density_f SNVT_lev_disc SNVT_scene SNVT_vol_f SNVT_dev_c_mode SNVT_lev_percent SNVT_scene_cfg SNVT_vol_kilo SNVT_earth_pos SNVT_lux SNVT_setting SNVT_vol_mil SNVT_elapsed_tm SNVT_magc...

Страница 48: ...oints List Third party access to BACnet points in a controller New Topic C TS JN E RD 5 22 18 Troubleshooting BACnet MS TP Troubleshooting N2 Troubleshooting ARC156 Corrected BACnet Device Instance number C TS RD F 1 11 18 Sequence of Operation Indoor Fan Section added on Configuring Automatic Fan Speed setpoints C AE AP E WB 2 8 17 Communications wiring BACnet ARC156 New topics C D Cover What is ...

Страница 49: ......

Страница 50: ...CARRIER CORPORATION 2020 Catalog No 11 808 540 01 10 29 2020 ...

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