York MILLENIUM SIMPLICITY ELITE Series User Manual Download

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351579-YTS-B-0608

ISO 9001

Certified Quality

Management System

MILLENNIUM

25-40 TON SINGLE PACKAGE

COMMERCIAL ROOFTOP UNIT EQUIPPED
WITH

SIMPLICITY

CONTROLS

This manual includes application, programming and service
procedures for the Millennium

25-40 Ton Single Package

Commercial Rooftop Unit equipped with

Simplicity

Controls.

These procedures are the same for all 25-40 Ton Millennium

Rooftop units in this series except as noted.

This manual covers

Simplicity

controls only, for unit installation

information please refer to the following.

RECOMMENDED TECHNICAL AND
INSTALLATION AIDS

Millennium

25-40 Ton Single Package Installation and Operation

Manual - 336043

Millennium

25-40 Ton Technical Guide - 246653

TECHNICAL APPLICATION

AND

PROGRAMMING GUIDE

MILLENNIUM

SINGLE PACKAGE

ROOFTOP UNITS
25, 30 & 40 TON EQUIPPED WITH

SIMPLICITY

ELITE CONTROLS

Summary of Contents for MILLENIUM SIMPLICITY ELITE Series

Page 1: ...ntrols These procedures are the same for all 25 40 Ton Millennium Rooftop units in this series except as noted This manual covers Simplicity controls only for unit installation information please refe...

Page 2: ...ATING WITH W1 W2 AND W3 INPUTS 30 SENSOR OPERATION 30 TYPES OF SPACE SENSORS 31 VAV OPERATION 32 SUPPLY DUCT PRESSURE CONTROL ALGORITHM 34 MORNING WARM UP VAV OCCUPIED HEATING CONTROL ALGORITHM 34 CON...

Page 3: ...e clock function with minimum of ten hours Time of day retention with unit power off The Millennium Simplicity control is resistor configured for Constant Volume CV units or Variable Air Volume VAV un...

Page 4: ...nsed input value s start up ramp time initial start value maximum output control value a status point to initiate the control action i e a fan ON status Direct or Reverse Controlling Action and severa...

Page 5: ...ODBUS communication protocol A communication protocol is simply a set of rules that determine how two systems communicate with each other over some medium such as a pair of wires phone line radio wave...

Page 6: ...C1O 4O Table 1 Acronyms Inputs Description APS Air Proving Switch IAQ Air Quality CO2 Sensor BAS Economizer Passes BAS economizer command through to Economizer output BPS Building Pressure Sensor C1O...

Page 7: ...actor and flash the appropriate flash code This flash code is not an alarm If the control already has contactors pulled in it will monitor the voltage and drop the contactors and shut down if the volt...

Page 8: ...D and Heating water valves Since these outputs are analog they are continuous between 2 and 10 Volts and are proportional to the 0 to 100 drive position of the device ECO Economizer Actuator The modul...

Page 9: ...cuit 2 24 VAC sense LPS3 18 30 VAC On Off 5 VAC Low Pressure Switch for Circuit 3 24 VAC sense LPS4 18 30 VAC On Off 5 VAC Low Pressure Switch for Circuit 4 24 VAC sense Limit Switch 1 18 30 VAC On Of...

Page 10: ...ts Heat 1 contactor output Relay Contacts 24 VAC 120 VAC H2 Class 1 Relay Contacts Heat 2 contactor output Relay Contacts 24 VAC 120 VAC H3 Class 1 Relay Contacts Heat 3 contactor output Relay Contact...

Page 11: ...l Also if there are field changes i e a modulating power exhaust option the control configuration will need to be modified for the new option METRIC OPERATION ENGLISH The factory default for this opti...

Page 12: ...cond Stage Setpoint 50 F This tells the control what Supply Air Temperature to maintain for a call for second stage of cooling This is used only during Constant Volume cooling mode with Economizer ope...

Page 13: ...e SAT Setpoint for Cooling 60 F The control will maintain this SAT when operating in VAV mode with a thermostat that is calling for first stage cooling This parameter may be adjusted from 40 F to 70 F...

Page 14: ...is operating the Fan it will close the Economizer fully until the freeze condition is over If the fan is off and the RAT drops below 40 F the Hot Water Valve will turn on 100 Supply AirTemp SAT Alarm...

Page 15: ...1 000 ppm Demand Ventilation Setpoint 1000 ppm This Setpoint is the maximum Indoor Air Quality IAQ level that the control will allow It is adjustable from 700 ppm to 1500 ppm IAQ Sensor Range 5 000 pp...

Page 16: ...80 180 150 21 Hydronic Heating Reverse Actuated Valve ON OFF ON OFF OFF 22 Remote Control ON OFF ON OFF OFF 23 VAV Upper Cooling SAT F 40 70 60 24 VAV Lower Cooling SAT F 40 70 55 25 VAV SAT Reset Set...

Page 17: ...180 Read Only Read Only 66 RAT Return Air Temp F 40 to 180 Read Only Read Only 67 OAT Outside Air Temp F 40 to 180 Read Only Read Only 68 ST Space Temp F 40 to 180 Read Only Read Only 69 OAH Outside A...

Page 18: ...y holidays In addition to the programmed schedule the space sensor allows a single key press to provide up to a 4 hour unoccupied override into the occupied mode OCCUPIED MODE The supply fan operates...

Page 19: ...ops below 180 psi R22 300 psi R410a condenser fan 4 contactor 9M is brought on by PS6 monitoring discharge pressure on compressor 2 4 A control call for Compressor 2 powers contactor 2M through termin...

Page 20: ...s listed below Dry Bulb The control relies on the RAT OAT and SAT readings connected to those terminals on the control Free cooling will be available until the outdoor tempera ture rises above the ind...

Page 21: ...de the duct pres sure controller if that option is installed is activated the optional power exhaust system is activated power is applied to the airflow proving switch APS and to the sup ply fan motor...

Page 22: ...ed The optional power exhaust system is activated In heat mode cooling is disabled and the optional econo mizer outside air dampers are closed This operation is maintained until the space temperature...

Page 23: ...wo stage ignition control For faster heat exchanger warm up the ICB will automatically run each module on high fire for 30 seconds given a low fire only call for heat Because the use of two stage modu...

Page 24: ...65 73 On On On Off On Off 10 426 664 341 331 80 On On On On On Off 11 495 997 396 798 93 On On On Off On On 12 533 330 426 664 100 On On On On On On Gas Heat Module Step Input Output of Total Output L...

Page 25: ...ntrol calculates a 2 10VDC signal to the inlet guide vane actuator 17 Duct Pressure Control VFD Variable Frequency Drive Option The duct pressure controls are powered with a call for the supply fan On...

Page 26: ...ed and are not modulated The BPS signal is proportional with the dif ference between outside ambient pressure and build ing pressure The VFD is set for a minimum speed of 33 and a maximum of 100 The V...

Page 27: ...g and very little peripheral hardware This reduces the costs associated with manufacturing and servicing equipment with this level of interacting features but you can t see the status of interlocked r...

Page 28: ...the ventilation air temperature is trimmed to be within the specified SAT control band Comfort Ventilation mode terminates when there is a call for heating or cooling from the space temperature contro...

Page 29: ...cycling between a satisfied and a heating state under control of a zone thermostat or zone sensor In its OFF state the control algorithm continues monitoring the SAT and performs calculations necessa...

Page 30: ...case G ON The operation of the thermostat s G signal is determined by the thermostat s fan mode switch NOTE During Economizer operation using Economizer First Stage Setpoint for SAT control one or mo...

Page 31: ...zone heating demand of 1 5 F will generate a request for first stage heat A zone heating demand of 2 0 F will generate a request for second stage heat A zone heating demand of 2 5 F will generate a r...

Page 32: ...ne thermostat The setpoint setting should prevent a possibility of cooling turned off while other zone s in the system still have a cooling demand VAV OPERATION WITH A ZONE SENSOR The Space Sensor is...

Page 33: ...the Space Sensor algorithm requests heating no heating all heating stages OFF when the Space Sensor algorithm is satisfied note that in this case the control will use all available heating stages rega...

Page 34: ...ekly schedule MWU Morning Warm Up is initiated upon all transitions from Unoccupied to Occupied mode The system clock is used to identify for the Morning Warm Up a 1 hour period before actual occupanc...

Page 35: ...owing control algorithm OCCUPIED VAV HEATING COOLING CONTROL ALGORITHM WITH A SPACE SENSOR In the occupied mode the control will compare the temperature in a selected VAV zone to the programmed VAV SA...

Page 36: ...ition setting represents the minimum opening of the outdoor air damper open This setting will be maintained any time the unit is in Occupied mode The minimum position setting will be determined by an...

Page 37: ...2 F and 1 BTU LB differentials respectively on both sides of these limits This is similar to the Outside Enthalpy method except instead of a programmed Enthalpy Number an actually sensed return air e...

Page 38: ...for several compressors exists the compressors will turn on with a delay between compressors Economizer Loading Option This is a programmable option The user has the ability to turn this function off...

Page 39: ...heating controls SAT to a fixed temperature deadband of programmed Econo mizer Loading Setpoint in Heating and 5 F below this setpoint the setpoint is programmable between 100 F 195 F default is 160...

Page 40: ...10 open whichever is greater Default Setpoint settings for the EF to turn ON at Economizer 60 open turn OFF at Economizer 20 open The EF has a minimum run time of 10 seconds and a minimum off time of...

Page 41: ...quency drive speed signal Where a unit has both ERV and an economizer the ERV will stop wheel rotation when the economizer dampers open far enough to trigger the user settable switch in the damper act...

Page 42: ...this stage of heating 18 Third stage of heating is locked out because the ignition board failed to turn on the gas valve after 5 minutes of operation or the gas valve has voltage on it and the contro...

Page 43: ...automatically terminate when the sensor is again detected as reliable If the unit is shut down as a result of a sensor failure the alarm must be reset after the sensor problem has been corrected by re...

Page 44: ...this SAT failure error will be activated The error will be written to the Error History Buffer In networked application the error flag will be readable by the network SUPPLY FAN FAILURE The condition...

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