Bryan Boilers Triple-Flex 150, 250, & 300, 200 service manual Demand and Rate

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that way until the 4- 20mA signal is stable again.

LLCH 20MA WATER TEMPERATURE: TEMPERATURE OR NONE

CH 4MA WATER TEMPERATURE: TEMPERATURE OR NONE

These provide the 20mA and 4mA temperatures for the interpolation curve. If either of these have the None value, are invalid, are out of range, or are too close for interpolation, an alert is issued and the setpoint reverts to "Local" when it is selected as 4-20mA.

LL CH SETPOINT: DEGREES OR NONE

This setpoint is used when the time-of-day input is off. If the ODR function is inactive then the setpoint is used as-is. If the ODR function is active then this setpoint provides one coordinate for the outdoor reset curve.

LLCH TOD SETPOINT: DEGREES OR NONE This setpoint is used when the time-of-day input is on. If the ODR function is inactive then the setpoint is used as-is.

If the ODR function is active then this setpoint provides one coordinate for the shifted (because TOD is on) outdoor reset curve.

TIME OF DAY

The Time of Day has one sources of control: a switch contact. Closed TOD is an on condition; open, then TOD is off.

OUTDOOR RESET AND BOOST (BOOST IS FUTURE)

The outdoor reset and boost functions for the LL CH functions will be implemented as described for a stand-alone CH loop.

Each of the loops which implements outdoor reset and boost has its own parameters. The parameters used by the LL master are:

•LL setpoint

•LL CH TOD Setpoint

•LL Outdoor reset enable: Disable, enable

•LL CH ODR minimum outdoor degrees or None

•temperature:

•LL CH ODR maximum outdoor degrees or None temperature:

•LL CH ODR low water temperature: degrees or None

•LL CH ODR boost time: mm:ss or None

•LL CH ODR boost max setpoint: degrees or

66

Date: 8-4-2010

Revision: 0

Form: 2396

None

•LL CH ODR boost step: degrees or None

•LL CH ODR boost recovery step time:mm:ss or None

The outdoor reset function requires the outdoor temperature. This temperature may be obtained from either a local sensor or a LL slave as described earlier. If the outdoor temperature is invalid and unknown, then no outdoor reset action occurs and an alert is issued indicating an invalid outdoor temperature.

LL CH ODR MINIMUM WATER TEMPERATURE: DEGREES OR NONE

This specifies the minimum outdoor reset setpoint for the LL master. If the outdoor reset function calculates a temperature that is below the temperature specified here, then this parameter's temperature will be used. If this parameter is invalid or None then the outdoor reset function will be inhibited and will not run: if it is enabled then an alert is issued.

4.7.6DEMAND AND RATE

On/Off Hysteresis Includes hysteresis shifting at turn-on, turn-off

LLOFF HYSTERESIS: DEGREES OR NONE LL ON HYSTERESIS: DEGREES OR NONE

The LL hysteresis values apply to all setpoint sources. The behavior of the hysteresis function is identical to the behavior of the stand-alone CH hysteresis function, except:

•where stand-alone CH hysteresis uses the on/off status of a single burner, the LL hysteresis uses the on/off status of all slave burners: this status is true if any slave burner is on, and false only if all are off.

•where stand-alone CH hysteresis uses time of turn-on and turn-off of a single burner, the LL hysteresis uses the turn-on of the first slave burners and the turn-off of the last slave burner.

LEAD LAG PID

The behavior of the Lead Lag PID function is identical to the behavior of the stand-alone CH PID function. The same gain scalars and

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Contents Triple-Flex High Efficiency Boilers Triple-Flex 150, 200, 250 High Efficiency Boilers Table of Contents Lead Drop-Stage On Error Ldse Figures Date Date Revision Form Boiler Foundation ClearancesMinimum Clearances to Combustible Surfaces DIMSafety Relief Valves Boiler ConnectionsFlow Connection Expansion Tank ConnectionsVenting of GAS Train Components Electrical RequirementsKW HP Combustion AIR SupplyCombustion AIR Openings LOUVERS, GRILLES, and ScreensDesign & Installation Flue GAS Venting SystemCombustion AIR and Venting Requirements for Canada ScfmMarking of GAS Vents Before Placing Boiler in OperationHydrostatic Test of Boilers and System Test of GAS PipingStart-Up and Operation Triple-Flex High Efficiency Boilers Boiler Assembly TRIPLE-FLEX Front ViewTRIPLE-FLEX Rear View Triple-Flex Rear ViewTRIPLE-FLEX Left Side View TRIPLE-FLEX Right Side ViewTRIPLE-FLEX Behind the Cabinet Door Air Flow Switch Pilot Spark Igniter Assembly TRIPLE-FLEX Left Flue Collector ViewPOWER-UP Validation TRIPLE-FLEX Right Flue Collector ViewHome Sola Hydronic Control SystemNavigation KeyboardConfiguration Configure StatusConfiguration Password Sample ConfigurationChange Parameter Settings Safety Verification Configure VerifyFAULT/ALARM Handling Safety Parameter User ConfirmationInfo BAR Lockouts Clear Lockout Operation Home Page LockoutModulation Configuration Configure Modulation Annunciation OperationFiring Rate Control Operation Firing Rate Field Advanced Setup Setup Advanced Setup System Time Setup Advanced Setup Date & TimeCalibrate Touch Screen Setup Advanced Setup Diagnostics Reset / Reboot Display Advanced Setup Display ResetOutdoor Reset Configure Configure Sensor Configuration Configure CH Central Heat ConfigurationSafety Verification Configure CH Central Heat Configuration Sound Pressure Levels PIDSound Pressure Readings Modbus Communication Alert CodesRPM DHWODR ILK SLO A2DHFS PIIRevision Test Setup PRE Checks and SetupBoiler Commissioning ModulationPilot Adjustment DRY RUNAdjusting Boiler Maximum Input Adjusting Boiler Minimum InputInitial Light OFF IWCCFH = 3600Vc gc CFH = ft 3 hr −1 of gas Vc = ft clocked GAS Meter ReadingsTroubleshooting PII Or LDate LCI OFF PII OFFILK OFF ILK on Vsnsr WeakFault Codes Are OEM Specific Fault CodesOFF ThroughOFF Blower LCI High Limit setpoint setting 228 Invalid Reserved Care and Maintenance Boil OUT Procedure Draining the System Do not Flush the System Through the BoilerBoiler Water Treatment External FIRE-SIDE Cleaning Suggested Maintenance ScheduleDate Revision Form Lead Lag General Description of the Lead LAG Application Lead LAG LL Master General OperationDrop-stage method Drop-stage detection timing System Wiring Hookup LL / Multi-Boiler Field WiringLEAD-LAG Operation Slave Operation and Setup Slave Mode USE FIRST, Equalize RUNTIME, USE LastSlave Parameters LL Master Operation and Setup Overall ControlPeriodic Data Polling Messages Slave Status ManagerAbnormalFaultCounter Used to tolerate momentary abnormality Invalid Response or no ResponseLL CH Demand Switch DISABLE, STAT, Environcom Remote Stat Master Heat DemandMaster Active Service Master Service StatusModulation Sensor LL Modulation Sensor S5Demand and Rate Rate Adjustment Integrator CompensationImplementation Rate Allocation Base Load Common 0-100%Rate Allocation Method Parallel Commonbase Limited Modulating Stage Overflow and UnderflowBurner Demand Stagerstate = IdleStagerstate = Active ADD-STAGE Error Threshold Degrees Error ThresholdADD-STAGE Rate Offset -100% to +100% ADD-STAGE ConditionDROP-STAGE Error Threshold Degrees LL ALL Boilers OFF Threshold Temperature or NoneDROP-STAGE Rate Offset -100% to +100% DROP-STAGE ConditionLead DROP-STAGE on Error LAG Selecton Method Sequence ORDER, Measured RUN TimeForce Lead Rotation Time Hhmm or None Date Revision Form Sequencer 1 Minute Event Forced Lead RotationSlave Write Data Slave Read Data
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