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ATH HEATNET KN Series Operation Instructions Manual Download Page 56

CONTROL METHODS 

HeatNet Control  V3  3.x 

Page 56 

Figure 41 

DHW Method 5a 

Quick Start 

Settings 

DHW METHOD 5a: Local Tank Heating Using a DHW Tank Sensor 

 

MASTER 

Settings 

 

 

MASTER Type 

HeatNet Address 

Combustion Air Damper 

Automatic 

Automatic 

Off 

Inputs 

 

 

Local/Remote 

Header Sensor 

System Return 

Local 

Yes 

Optional 

Outputs 

 

 

System Pump On 

Local Pump On 

 

When Boiler Enabled 

When Boiler Running 

 

 
 
 

MEMBER 2  

Settings 

  

  

  

  

HeatNet Address 

DHW Boiler Mode 

DHW Use Sensor 

DHW Local Pump Off 

Combustion Air Damper 

2 

Local 

Yes 

Yes 

Off 

Inputs 

  

  

  

  

Local/Remote 

OR OVR 

DHW Sensor 

JPS1 Jumper must be cut to service DHW  

Remote 

Jumper 

Yes - Tank 

 

  

Outputs 

  

  

  

  

Local Pump On 

DHW Pump On 

 

 

  

Space Heating Call 

DHW Call 

  

  

  

 
 
 

MEMBER 3 

Settings 

  

  

  

  

HeatNet Address 

DHW Boiler Mode 

DHW Use Sensor 

DHW Local Pump Off 

Combustion Air Damper 

3 

Local 

Yes 

Yes 

Off 

Inputs 

  

  

  

  

Local/Remote 

OR OVR 

DHW Sensor 

JPS1 Jumper must be cut to service DHW  

Remote 

Jumper 

Yes - Tank 

 

  

Outputs 

  

  

  

  

Local Pump On 

DHW Pump On 

 

 

  

Space Heating Call 

DHW Call 

  

  

  

 
 
 
 

 

 

Summary of Contents for HEATNET KN Series

Page 1: ...methods given in these instructions Failure to do so can result in severe personal injury death or substantial property damage Do not use the boiler during construction Construction dust and particul...

Page 2: ...RELATED TO THE INFORMATION INCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY OR FITNESS FOR PURPOSE http www knseries com The Advanced Thermal Hydronics name and logo Mes...

Page 3: ...CONTROL INPUT 2 STAGE CONTROL T1 T2 33 HEATING CONTROL INPUT 3 4 20MA CONTROL 33 HEATING CONTROL INPUT 4 AA HIGH FIRE 34 HEATING CONTROL INPUT 5 MODBUS COMMUNICATIONS 34 Domestic Hot Water Methods 35...

Page 4: ...LSAFE REQUIREMENTS 76 Water Flow Options 77 HeatNet Online 79 Wiring Connections 81 Home Screen Navigation 92 Home Screen 93 Home Screen Messages 94 HEATING MODE MESSAGES 94 SETPOINT SOURCE MESSAGES 9...

Page 5: ...layed in the Home Screen While performing this task the control also monitors dedicated external limits in a limit string and provides an orderly shutdown and fault indication in the event of a trippe...

Page 6: ...he BTUs that will be introduced by the newly added boiler This adjustment occurs when the newly added MEMBER boiler enters its ON CALL state default setting This can be changed to PILOT when the new b...

Page 7: ...eceiving inputs from an external control system When using the H Net network cable in a MASTER MEMBER system the system setpoint is sent from the MASTER as a digital signal along with the modulation v...

Page 8: ...s 6 Support for 2 display types Vacuum Florescent and Color LCD touchscreen using the same 20 pin ribbon cable LCD display provides the HeatNet On Line interface 7 System Return sensor input 8 Enhance...

Page 9: ...and MIXED are optional 22 Programmable password protection to secure the programmable settings 23 Remote 4 20mA setpoint control using a mapped setpoint range to the 4 20mA control signal 24 Freeze P...

Page 10: ...water to decrease energy consumption and increases the overall efficiency in excess of 95 Figure 2 Secondary HX Pump Relay R20 When a Heat Demand is generated in addition to the System pump and Local...

Page 11: ...secondary Heat Exchanger pump is operating Figure 4 Displays GPM at Local Water Flow Prove Icon The KN Series Plus boilers come equipped with a flow sensor that sends flow information to the HeatNet...

Page 12: ...ype menu and the defaults are loaded When Glycol is added to a system the flow characteristics of the water are affected so it is important to enter the correct Glycol Mix value If the system is using...

Page 13: ...tes the boiler will retry to start the pumps to achieve flow and start the boiler If there are other boilers on the network the Master will attempt to start one of them If the boiler is running it wil...

Page 14: ...larm DHW Pump v2 x 8A 250 VAC resistive K8 on J4 2 6 for Base Loading version 2 x Control AC Interlocks 24 VAC 120 VAC input Control Inputs AA Heat Demand 4 20mA Enable OA override T1 T2 dry contact i...

Page 15: ...sor 14 00152 X 2 CP PO 4 4 probe with dual sensor 14 00153 X 2 CP PO 6 6 probe with dual sensor 02 4280 ACI 10k CP O Outside Air Sensor with Housing 1k Platinum Stack sensor 42 9554 Installation Opera...

Page 16: ...E TRUE or MIXED In our example we will use the RUNTIME TRUE rotation since it is the default The MASTER now checks all of the runtimes to determine which boiler has the least runtime based on the MIN...

Page 17: ...X clamp will also be in effect for the ADD BOILER DELAY time This is to minimize thermal shock to the boiler Once the header water temperature is in the heating band only the modulation rate is used t...

Page 18: ...r RET Temp the Priority 2 set of boilers will fire first next based on runtime This has the effect of flipping the Priority of the sets Stopping Boilers When a boiler is to be stopped water temp is ab...

Page 19: ...hen use 3 larger boilers and set them to Priority 2 Using these Priority settings with the conditions menu the small boilers can run first during the shoulder months Spring and Fall and the larger boi...

Page 20: ...ths when maximum heating is required Above this setpoint smaller condensing boilers should be brought on first to run the system as efficiently as possible 2 Maximum heating is required START PRIORITY...

Page 21: ...rs first This is also true when using the OA T setting to start the Priority 1boiler set when the OA T is above the start setpoint To use temperatures as start and stop conditions the system design te...

Page 22: ...nput is selected first Next the MOD MAX value of this Priority 1 boiler needs to be greater than Mod MAX Priority 1 s Min Input Priority 2 s Min Input Max Input of the Priority 1 boiler The reason for...

Page 23: ...198M 330M 726M and operate at higher combustion efficiencies 33 is roughly between the top two lines on the Typical Efficiency of Condensing Boilers chart Figure 11 Boiler System Response 1 2 KN2s 3 K...

Page 24: ...selection charts and the MOD MAX value so that boilers are brought on and fired in their respective efficiency curve while maintaining continuity in BTUs Since selecting the Priority 1 boiler is integ...

Page 25: ...50 333 416 500 583 Mod Max 80 400 600 800 1 1 2M 1 4M Mod Max 70 350 525 700 875 1 1M 1 2M Mod Max 60 300 450 600 750 900 1 1M Mod Max 50 250 375 500 625 750 875M KN Boiler Btu Chart MBH KN2 KN4 KN6 K...

Page 26: ...t SETTINGS HEAT EXCHANGER SEND RETURN SENSOR to which of its return temperatures it would send to all boilers These include the Local Return temperature or the System Return temperature The MEMBER s m...

Page 27: ...ture by setting 1 SETTINGS BOILER OPTION to BASE LOAD This setting uses the OPTION Relay K8 J4 pins 2 6 as control for a Base Load Boiler 2 The SETTINGS BASE LOADING BOILERS to 1 Currently allows 1 ba...

Page 28: ...hen the 3 2 million BTU boilers are running 95 and the Base Load boiler is called on At this point there is a need for approximately 6 million BTUs The 3 smaller boilers will then modulate down to low...

Page 29: ...First ensure that the SETTINGS BOILER TYPE OPTION is set to BASE LOAD The Base Load Relay K8 will not be enabled used unless this is selected 2 Now The SETTINGS BASE LOADING BOILERS must be set to 1 3...

Page 30: ...will open to disable the boiler when the OUTSIDE AIR read from the Outside Air Temperature sensor if equipped rises above this value SETTINGS BASE LOADING STOP WHEN OUTSIDE AIR IS ABOVE If the OUTSID...

Page 31: ...4 The fourth method turns the boiler ON and OFF 100 modulation using the AA terminal Heating Control Method 5 The fifth method uses an RS485 digital communications cable with the MODBUS protocol The b...

Page 32: ...tem supply header sensor on the H Net network can command the boiler fire rate of all MEMBER boilers The MASTER can call as many boilers as are available boilers are auto detected over the H Net cable...

Page 33: ...sing the inputs T1 and T2 inputs Its intended use is with an external stage controller with no analog or modulation outputs 1 Closing only one of these contacts tells the boiler to operate at MINIMUM...

Page 34: ...o needs to be loaded periodically to allow the H Net system to fallback to Method 1 in the event communications is lost from the Building Management System BMS This feature can be turned off in SETTIN...

Page 35: ...e AUTO will handle normal heating only applications It may also be used when individual boilers have tanks connected and are controlled with the DHW BOILER set to LOCAL DHW is for DHW applications wit...

Page 36: ...atNet HeatNet Local Pump HeatNet Make Up Make Up DHW METHOD 1 DHW Heating ONLY using a DHW MASTER Multiple Non Condensing Boilers A DHW Setpoint is maintained in the DHW tank based on the MASTER s DHW...

Page 37: ...ngs HeatNet Address Combustion Air Damper 2 Off Inputs Local Remote JPS1 Jumper must be cut to service DHW Remote Outputs Local Pump On When Boiler Running MEMBER 3 Settings HeatNet Address Combustion...

Page 38: ...Connect a 10k thermistor from the DHW tank s sensor well to J10B terminals on the DHW MASTER or stand alone boiler Wire a pump or valve from the Local pump of each DHW boiler A DHW call is when the DH...

Page 39: ...as stopped firing and the post purge time has expired 7 Now in order to be a MASTER boiler it must have a Header sensor In method 1 DHW Only we will employ the DHW sensor J10 A 9 10 in this system ins...

Page 40: ...h valves In this method the MASTER simultaneously controls both space heating and DHW heating The MASTER is piped to only service space heating and both MEMBERs are piped to service space heating and...

Page 41: ...ating Or DHW Failsafe Space Heating W Valves Settings HeatNet Address DHW Boiler Mode DHW Local Pump Off Combustion Air Damper HeatNet Failsafe 2 Combination No Off On Inputs Local Remote JPS1 Jumper...

Page 42: ...th pumps In this method the MASTER simultaneously controls both space heating and DHW heating The MASTER is piped to only service space heating and both MEMBERs are piped to service space heating and...

Page 43: ...W Failsafe Space Heating W Pumps Settings HeatNet Address DHW Boiler Mode DHW Local Pump Off Combustion Air Damper HeatNet Failsafe 2 Combination Yes Off On Inputs Local Remote JPS1 Jumper must be cut...

Page 44: ...nsor is used the boiler will modulate to maintain tank temperature The DHW Call always has Priority over space heating A dual 10k sensor is available that can be wired from one tank to two boilers The...

Page 45: ...it off Use this in conjunction with the LOCAL PUMP OFF and the LOCAL DELAY settings DHW has Priority 12 Next is the LOCAL PUMP OFF menu When a DHW heating cycle begins what to do with the local pump...

Page 46: ...Up Make Up DHW METHOD 3 DHW Heating ONLY using a Header sensor input Multiple Boilers Reverse Return In this method a Heating Setpoint is maintained at the MASTER s System Header Sensor located in the...

Page 47: ...nputs Local Remote Header Sensor JPS1 Jumper must be cut to service DHW Local Yes Tank Outputs Local Pump On When Boiler Running MEMBER 2 Settings HeatNet Address Combustion Air Damper 2 Off Inputs Lo...

Page 48: ...which boilers are staged ON and then OFF is controlled by the SETTINGS SETPOINTS HEAT BAND differential This can be understood by referring to the INTRODUCTION section on the MASTER in the beginning o...

Page 49: ...the MASTER s Heat Demand input enables space heating by energizing the system pump and maintaining the Heating Setpoint at the MASTER s System Header Sensor When the Aquastat located in the DHW tank...

Page 50: ...Return JPS1 Jumper must be cut to service DHW Local Tank Aquastat Yes Optional Outputs System Pump On Local Pump On DHW Pump On When Boiler Enabled When Boiler Running DHW Call MEMBER 2 Settings Heat...

Page 51: ...ot used 6 PUMP PRIORITY Setting this value to YES will turn OFF the system pump when the DHW setpoint override mode is active Setting this value to NO leaves the system pump on This active period incl...

Page 52: ...Header Sensor Local Pump System Pump System Supply System Return DHW METHOD 4b Space Heating with DHW Override of Setpoint on MASTER using a DHW Sensor Primary Secondary Reverse Return In DHW METHOD 4...

Page 53: ...tem Return DHW Sensor JPS1 Jumper must be cut Local Jumper Yes Optional Yes Tank to service DHW Outputs System Pump On Local Pump Valve On DHW Pump On When Boiler Enabled When Boiler Running DHW Call...

Page 54: ...sired in the heating loop when a tank is calling for DHW heat 4 LOWER BAND This is not used 5 UPPER BAND This is not used 6 PUMP PRIORITY Setting this value to YES will turn OFF the system pump when t...

Page 55: ...10K Type II Tank Sensor In DHW METHOD 5a Local DHW Tank Heating Override the MASTER s Heat Demand input enables space heating by energizing the system pump and maintaining the Heating Setpoint at the...

Page 56: ...ing MEMBER 2 Settings HeatNet Address DHW Boiler Mode DHW Use Sensor DHW Local Pump Off Combustion Air Damper 2 Local Yes Yes Off Inputs Local Remote OR OVR DHW Sensor JPS1 Jumper must be cut to servi...

Page 57: ...a DHW boiler The DHW pump valve will be enabled on the LOCAL DHW MEMBER whenever there is a DHW call for heat A DHW call for heat is when the DHW temperature is below the DHW SETPOINT LOWER BAND or wh...

Page 58: ...heating cycle backwards compatibility Setting this value to YES will shut the local pump off during a DHW heating cycle but will keep the local pump on for the LOCAL DELAY 10s Programmable time before...

Page 59: ...a Hybrid Sensor the MASTER s Heat Demand input enables space heating by energizing the system pump and maintaining the Heating Setpoint at the MASTER s System Header Sensor using the available MEMBERs...

Page 60: ...BER 2 Settings HeatNet Address DHW Boiler Mode Combustion Air Damper 2 Local Off DHW Use Sensor Hybrid Sensor DHW Local Pump Off No Supply Yes Inputs Local Remote OR OVR JPS1 Jumper must be cut to ser...

Page 61: ...anywhere needed to maintain that locations temperature This is an additional sensor that needs to be acquired A thermostat can be placed in a tank and connected to the OR OVR input On MEMBER boilers...

Page 62: ...e used across the 4 20mA input but it still needs to supply the necessary current i e 20mA This resistor is located on the bottom side of the control board When a 4 02 mA signal is sensed the boiler w...

Page 63: ...f the starting mA 4 10mA the boiler will start when the control current applied achieves this value of 4 10mA The boiler must drop 1mA below this to turn OFF in this example 4 00mA This hysteresis val...

Page 64: ...flow proving switch is implemented using System Water Flow on J11A 1 2 If a flow switch is connected to the SYSTEM WTR FLOW interlock the HeatNet control will wait up to 10 seconds to prove flow If f...

Page 65: ...itched by the difference between each pump s runtime The HeatNet control keeps a running record of each pump s runtime in hours If a pump is taken offline or replaced The runtimes can then be adjusted...

Page 66: ...ll occur The Combustion Damper can be setup in the SETTINGS COMBUSTION AIR DAMPER menu Using the LINKED COMMON setting the MASTER boiler controls a system damper so in the event this damper fails to o...

Page 67: ...used to bring the boiler system on to maintain the water setpoint at the LOCAL or SYSTEM SETPOINT value During WWS operation the System pump will not be enabled just the Local pump unless the SETTINGS...

Page 68: ...e file is loaded at the factory in both locations This is to ensure that if a bad file is loaded by the user the factory loaded file can be re loaded to get the board functional again All updating of...

Page 69: ...lected file will be hi lited and displayed in the File Name selection box If that is the correct file select OK The current version of display firmware will be displayed and the new version will be di...

Page 70: ...Button The USB Drive tab is preselected do not change unless loading a saved file from memory Select the Select File Button The USB DISK should appear as a folder in the Drives Menu Select the USB Dis...

Page 71: ...2 Load and Select Program On Next Reboot The firmware will be saved in memory and on the next reboot the file will be downloaded 3 Load Select and Program The firmware will be saved into memory loaded...

Page 72: ...here the ribbon cable for the display plugs in If the control is power cycled in this condition the factory program will overwrite the existing running program If in the LOAD FIRMWARE menus STORAGE LO...

Page 73: ...d the control will verify by a progress bar If an event destroys the control all settings are lost A servicing technician does not always know how the boiler was set up Having the settings saved on a...

Page 74: ...is correct select the Save button The file will be saved to the thumb drive and return to screen 3 of 4 Remove the thumb drive and store it for later use Restoring the Settings To restore the setting...

Page 75: ...y Every 10 minutes the damper relay will cycle and try to open the damper again If the H Net control closes the last interlock string connected to the ignition control and the ignition control never c...

Page 76: ...ASTER controls the system pump then the Failsafe MEMBER boiler would need to control the system pump in parallel with the MASTER boiler Wire the System Pump contacts in parallel with the MASTER 2 If t...

Page 77: ...lled for At this time the MASTER may not be able to achieve setpoint due to the reduced output with the running boiler s The MASTER will then call on more boilers to achieve setpoint but at the same t...

Page 78: ...s this feature will be deactivated until a new boiler is written Ensure periodic updates of the flow register are done within 10 minute intervals e To check if HeatNet is in a BMS limited state read t...

Page 79: ...vide daily status messages and fault alarm emails within minutes of trouble This provides a valuable tool for technicians on the road If the technician has a smart phone they can be notified through t...

Page 80: ...oints can also be viewed in a manner other than a histogram as pictured below The date time picker can be used to mine the raw data stored on the HeatNet Online server Runtime graphs of each boiler en...

Page 81: ...ring Connections Figure 49 Dip Switches and Wiring Wire Strip Length If the terminal blocks are of the screwless type the wire should be stripped to 42 or 10 67mm If the terminal blocks are of the scr...

Page 82: ...able Switches DOWN Position Disable Switches UP position Switch shown disabled MEMBER Close to run Local setpoint Open for Master control MASTER Close to control all boilers and run at System setpoint...

Page 83: ...83 Figure 51 Heating Methods 2 and 4 AA High Fire and High Low MASTER or MEMBER boiler Heating Mode 2 Stage Control Inputs T1 or T2 Closed Lowfire T1 T2 closed Highfire T1 T2 Heating Mode 4 High Fire...

Page 84: ...WIRING CONNECTIONS HeatNet Control V3 3 x Page 84 Figure 52 Heating Method 3 4 20 mA 0 10 VDC...

Page 85: ...essor modulemay be damaged The pin headers arelocated on thecontrol U shaped that the Protocessor bridge module plugs in directly Align the sockets on the Protocessor with the pin headers on thecontro...

Page 86: ...at the minimum rate while in Calibrate This functions exactly as the T1 input Calibrate Allows adjustment of the Minimum Fire Maximum Fire and Pilot Ignition settings Combustion proving switch from Co...

Page 87: ...re a well OPTIONAL Water Temperature Common System Supply Header REQUIRED Water Temperature OUT supply of Boiler REQUIRED Water Temperature INLET return of Boiler IF CONNECTED BOILER MASTER OPTIONAL O...

Page 88: ...High Limit Heat Demand HEADER SENSOR Determines Master Boiler 4 RETURN SENSOR 3 SUPPLY SENSOR 2 LOCAL PUMP ENABLE 8 FLOW PROVE 10 SYSTEM PUMP ENABLE 14 FLOW PROVE 9 OUTDOOR SENSOR North Away From Exh...

Page 89: ...control signal must drop below 4 01 mA to stop Boiler MAX OUTPUT After Ignition 0 100 Control Signal to MAX Output Boiler Off Percent of Boilers INPUT 0ma Display input of control when running A cont...

Page 90: ...PER 24 VAC Transformer DAMPER Prove Switch DAMPER Enable 24 VAC Mains MASTER BOILER MEMBER BOILER 1 Connection if Member boiler is running as Failsafe MEMBER BOILER 2 Connect to 24 VAC Return on each...

Page 91: ...mmon system pump wiring System Pump Contactor System Pump Voltage Feed System Pump System Pump Voltage Return 120VAC Ph2 Ph3 120 Return 120 VAC Return DPST Relay System Flow Prove Switch 120VAC Add ad...

Page 92: ...lock Ignition and Binary Inputs Analog Motor Tach and Misc Outdoor Reset if Active Boiler Runtimes Home Screen This diagram depicts the Home screen and subsequent screens when the right arrow button i...

Page 93: ...et Control V3 3 x Page 93 Home Screen The Home screen is used to show the main temperatures in graphs along with some ancillary functions The Home Button in the upper left corner when pressed will alw...

Page 94: ...at or sensor is being used to fireboiler in a DHW mode Failsafe Boiler in Failsafe mode No other Heating Demand may be present HeatNet Call for Space Heat is controlled by HeatNet HeatNet DHW Call for...

Page 95: ...r runs away excessive speed this message will be displayed With this event the HeatNet control will lockout the boiler and the boiler will require a manual reset to restart Operation of the blower abo...

Page 96: ...heat exchanger The heat exchanger has a status LED to provide operational feedback Heating The system is in a heating mode but none of the boilers are firing High Low T limited Algorithm that looks at...

Page 97: ...t Every 10 seconds the circulator pump relay will cycle ON for 10 seconds and then OFF for 10 seconds to try and establish flow No System Flow The SYSTEM WATER FLOW interlock is open J11A 1 J11A 2 Onc...

Page 98: ...rating Limit When the supply water temperature exceeds the top of the Operating Limit Band and the Operating Limit This is the Yellow Band portion of the temperature bar on the Home Screen Open EXT OP...

Page 99: ...un to start and is waiting for the handshaking events to begin with the ignition control and the HeatNet control Warm Weather Shutdown in effect The WWS temperature has been exceeded The boiler system...

Page 100: ...mple shows a 10 minute delay for the first boiler and increases by 3 minutes for each additional boiler When the Header temperature is above the band Yellow the HEAT STOP TIMER Shed Boiler Delay is us...

Page 101: ...the operation of the boiler See the Settings section To the right of the Settings button is the Log File button Pressing this button will allow viewing of the log file See Log Entry section The Data...

Page 102: ...turn green Adjust the Minimum value to the desired setting using the arrow keys The Minimum setting is clamped to its lowest rated setting and cannot be adjusted below this Press the check key once yo...

Page 103: ...sing the arrow keys The top line left corner indicates any condition that caused the event This may be a fault such as to indicate a sensor that has failed or general event as denoted by Event The top...

Page 104: ...3 3 x Page 104 Control Settings Menu To Enter the Settings menus the first boiler button must be selected The button is highlighted by the red box Next press the Settings box as also illustrated by th...

Page 105: ...on A 0 disables the Lead Boiler function Firing Mode determines lead BOILER GRAPHIC M M 16 This Box displays the boilers auto detected by H Net While M is the MASTER boiler the numbers are the H Net a...

Page 106: ...which boiler shuts down operation is below this If boiler is running using either OA RESET or WWS and the OR OVR input is closed the OA RESET slope is overridden and runs at local setpoint until OR O...

Page 107: ...MP1 PUMP2 This menu allows the clearing of a pump s runtime counter Discretion is advised in clearing only one pump s hours after replacement and then using ROTATION set to PUMP HRS This would cause t...

Page 108: ...PUMP VALVE REMAINS ON OFF ON OFF ON The MASTER boiler will keep its pump valve on when no boilers are running Prevents deadheading the system flow SETBACK TABS 1 4 1 1 4 Four setbacks TABBED to adjus...

Page 109: ...refer to the common damper wiring diagram PROOF TIME 2 00 0 4min This is the proving time in minutes for the combustion air damper prove switch It is sensed at J12B Pin 7 If the damper faults a retry...

Page 110: ...ps protect the heat exchanger from damage due to excessive delta T s If this MASTER boiler is running SEND RETURN RETURN RETURN SYSTEM RETURN This setting is used by the MASTER boiler to select which...

Page 111: ...t input The boiler could be configured to run as a space heating boiler that is controlled by a MASTER It would also monitor a tank or DHW call and disconnect from the MASTER to provide local DHW heat...

Page 112: ...l a space heating boiler that is running when none are available to perform DHW heating When this happens the boiler will not shut down but keep running during the change from space heating to DHW Hot...

Page 113: ...are used this value can be set to a few seconds PURGE TO TANK TANK SPACE TANK will keep the DHW pump valve enabled for the DHW POST PURGE time thus purging some of the boiler s heat into the tank SPAC...

Page 114: ...ontrol is to be used as a space heating control a combination DHW space heating control or just to perform DHW Heating When set to AUTO the boiler uses one PID control to provide space heating When se...

Page 115: ...4 1 33 3 1 In mixed boiler size configurations more than 2 boilers in a system or when bumps in the temperature occur as boilers are added and subtracted this value may need adjustment The adjustments...

Page 116: ...he firing rotation is based on runtime this value represents the interval in hours of runtime before rotation occurs Boiler to Boiler MINIMUM OFF TIME 0 m 0 10 min This is the time in minutes that the...

Page 117: ...n set this condition will stop the Base Load boiler Always First Return is Below Outside Air is Above Modulation is Below Sync MODULATION IS BELOW 20 20 100 20 20 100 The base load relay K8 will open...

Page 118: ...e boiler responds to its HEAT DEMAND inputs in the Priority that is outlined in the Control Methods section If the Priority is set to HIGHEST the 4 20mA input responds at the highest Priority level sa...

Page 119: ...TS CH2 CH2 V CH2 mA BMS This setting determines where the flow values are originating If set to Volts 2 then a Flow meter is providing a 0 10V signal on J10B 4 20mA 2 Ensure that S6 switch 2 is UP for...

Page 120: ...es the minimum firing percentage 5 1 Min 20 4 1 Min 25 3 1 Min 33 The boiler must be set up for operation at this Turndown rate using the Calibrate settings This TURNDOWN setting only controls the dis...

Page 121: ...to start the blower at a low rpm If the low speed start time is too low the Ametek blower may not start and lock out with its current limit This may result in the need for the boiler to be recycled If...

Page 122: ...seful when the settings have been incorrectly changed by an unknown source a factory reset or a firmware update is performed HeatNet Online is an Internet over Ethernet connection between a HeatNet co...

Page 123: ...4 LOAD DISPLAY FIRMWARE BOX The Display firmware is independent of the HeatNet control s firmware A separate Display firmware file is required in order to update the display This needs to be placed on...

Page 124: ...http www rbiwaterheaters com website periodically for firmware updates The IOM Manual button when pressed loads the Display firmware release PDF of the Boiler s IOM The HeatNet Manual button when pres...

Page 125: ...BMS building management system the operating setpoint The setpoint countdown timer should be loaded with a timeout value in seconds prior to writing the system setpoint When the timer reaches zero the...

Page 126: ...bit signed 1 0 DHW Setpoint 40 200 F 40019 BMSGPMRate 16 bit unsigned 1 0 GPM rate to be loaded by BMS for calculating how many boilers can run based on flow 0 1500 GPM 40020 BMSLimitBoilers 16 bit un...

Page 127: ...Status2 30024 Boiler05Status1 30025 Boiler05Status2 30026 Boiler06Status1 30027 Boiler06Status2 30028 Boiler07Status1 30029 Boiler07Status2 30030 Boiler08Status1 30031 Boiler08Status2 30032 Boiler09St...

Page 128: ...10RuntimeHigh16 30067 Boiler10RuntimeLow16 30068 Boiler11RuntimeHigh16 30069 Boiler11RuntimeLow16 30070 Boiler12RuntimeHigh16 30071 Boiler12RuntimeLow16 30072 Boiler13RuntimeHigh16 30073 Boiler13Runti...

Page 129: ...emp 30110 Boiler15SupplyTemp 30111 Boiler16SupplyTemp 30112 Boiler01ReturnTemp 16 bit signed 0 01 Boiler 1 16 return temperature if available See BoilerStatus2 to determine if the sensor is present Bo...

Page 130: ...30146 Boiler10CyclesHigh16 30147 Boiler10CyclesLow16 30148 Boiler11CyclesHigh16 30149 Boiler11CyclesLow16 30150 Boiler12CyclesHigh16 30151 Boiler12CyclesLow16 30152 Boiler13CyclesHigh16 30153 Boiler1...

Page 131: ...oiler16DHWTemp 30224 Boiler01Modulation 16 bit signed The running display modulation This is typically the actual running modulation except under special circumstances when the boiler is running in a...

Page 132: ...the BMS 0 1500 GPM 30266 SystemFlowLow16 30269 HeatingBoilersOn 8 bit unsigned The number of boilers currently running for heating 0 16 30270 DHWBoilersOn 8 bit unsigned The number of boilers currentl...

Page 133: ...ch 0 closed 1 open 6 RESERVED FACTORY 7 Software Operator 0 off 1 on 8 Header Sensor not Detected 0 detected 1 not detected 9 Supply Sensor not Detected 0 detected 1 not detected 10 Return Sensor not...

Page 134: ...MBER Error An Alarm or Failed condition has occurred on one or more of the MEMBER boilers 0 ok 1 error 5 Boiler Running Main Valve is open and Modulation Delay time has expired 0 off 1 running 6 Pump...

Page 135: ...set Override 0 off 1 on 4 T1 0 off 1 on 5 T2 0 off 1 on 6 Obsolete 0 off 1 on 7 Obsolete 0 off 1 on 8 reserved for future use 9 reserved for future use 10 reserved for future use 11 reserved for futur...

Page 136: ...DHW Boiler 1 This control board has been designated a DHW boiler by cutting the DHW jumper JPS1 0 no 1 yes DHW jumper cut 11 Operating Limit Clamp 1 Boiler input is being limited clamped due to a high...

Page 137: ...OUTDOOR AIR RESET OA RESET WARM WEATHER SD WWS SETPOINT SET OA SETPOINTS WATER TEMP HIGH OA TEMP WATER TEMP LOW OA TEMP PUMP OPTIONS SYSTEM PUMP POST PURGE TIME PUMP ROTATION ROTATION SYSTEM PUMPS ROT...

Page 138: ...Y TIME END DAY TIME OPTIONS TEMP SCALE KEY CLICK SKIP PASSWORD BRIGHTNESS LOG RUNTIME RUN HOURS DATA LOG ENTRY SIZE BOILER CYCLES AUX FUNCTIONS COMBUST AIR DAMPER TYPE IN USE INPUT PROOF TIME ALARM SI...

Page 139: ...ME HOLDOFF TIME PUMP ALWAYS ON ADVANCED SETUP DISTRIBUTED CTRL CONTROL MASTER TYPE H NET ADDRESS MODBUS ADDRESS MODULAR BOILER SET SPACE HEATING ADD BOILER DELAY SHED BOILER DELAY MODULATE DELAY TIME...

Page 140: ...AY TIME SENSORS SENSOR OUTDSIDE SUPPLY R E T U R N H E A D E R TYPE DHW 6 7 8 4 20mA INPUT ANALOG IN CHANNEL CHANNEL MODE 4mA SETPOINT 20mA SETPOINT BOILER START PRIORITY PASSWORD COMMUNICATIONS BAUD...

Page 141: ...ge 141 OFF BOILER BLOWR SYSTEM CONFIGURE INTERLKS INTRLK ASSIGNMENTS SYSTEM FLOW ON LOAD FIRMWARE Version OPTION BOILER TYPE PRODUCT CONDENSING BTU IN BLOWER MASS TURNDOWN ALTITUDE PID RATE CALIBRATIO...

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Page 144: ...IN UNITED STATES 260 NORTH ELM ST WESTFIELD MA 01085 413 564 5515 FAX 413 568 9613 IN CANADA 7555 TRANMERE DRIVE MISSISSAUGA ONT L5S 1L4 905 670 5888 FAX 905 670 5782 www knseries com...

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