HydroTherm KN SERIES Control Manual Download Page 9 | Manualshive

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P/N 42-9452 8/08 Copyright Hydrotherm

KN USER’S CONTROL MANUAL

Figure 7

KN wiring summary — wiring to electrical connection board

Method 1: HeatNet modulation – local control

(cont.)

1

Also see Figure 2, page 6.

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Summary of Contents for KN SERIES

Page 1: ...pply Followtheinstructionmanualprocedurestoductairtotheboilerairintake Iftheboilerhasbeencontaminatedbyoperation with contaminated air follow the instruction manual guidelines to clean repair or repla...

Page 2: ...l controller ThecontrolmethodusedbytheHeatNetcontrolisbasedondigitalcommunications whicheliminatesthe needforanalogcontrolsignals Analogsignalinputsaresupported butahigherlevelofcontrolprecision repea...

Page 3: ...ter cutoff if desired To flow switch when used Used to activate combustion air damper if desired To combustion air damper proving switch required when controlling combustion air damper Indoor air rese...

Page 4: ...4 P N 42 9452 8 08 Copyright Hydrotherm KN USER S CONTROL MANUAL The KN boiler with HeatNetTM control...

Page 5: ...e RS485 interface board and cable above Boiler setup is essentially the same as for method 1 with the exception that each boiler must be assigned both a HeatNet network address and an address for the...

Page 6: ...service switch mounted and installed in accordance with all appli cable codes 1 2 3 4 5 6 7 8 9 10 1 1 2 3 Figure 1 Electrical connection board see item 10 page 3 for location Also see the wiring sum...

Page 7: ...at pocket ing in the top of the heat exchanger Thepostpurgecirculatorisfactory pipedandpre wired Do not change the usage the wiring the location or the piping Boiler circulator See the Boiler manual f...

Page 8: ...board If there is more than one transformer provide one wire from each transformer common side to one of the IAR negative terminals IAR Sensor wiring Header sensor is required A header sensor must be...

Page 9: ...P N 42 9452 8 08 Copyright Hydrotherm KN USER S CONTROL MANUAL Figure 7 KN wiring summary wiring to electrical connection board Method 1 HeatNet modulation local control cont 1 Also see Figure 2 page...

Page 10: ...erm KN USER S CONTROL MANUAL KN 2 only Figure 8 KN wiring summary wiring to electrical connection board continued see Figure 7 page 9 for terminal strip locations Also see Figure 5 page 7 Method 1 Hea...

Page 11: ...temperature if member boilers were to input heat to the system without control from the master DHW operation in particular would raise the supply temperature from overriding boilers to the DHW Setpoi...

Page 12: ...he parameter explanations in Table 8 page 25 through page 29 When adjusting the limit band operating limit OP LIMIT local setpoint LOC SETPOINT and DHW setpoint make sure the operating temperature ban...

Page 13: ...15 F If the display shows a blank space such as 123_56789ABC the control does not detectthemissingboiler boiler4 ChecktheyellowLEDonthecommunication port of the missing boiler NORMAL connection LED s...

Page 14: ...lve 31 Present Boiler Detected Overview This method uses an RS485 digital communications cable withtheModbusprotocoltocontrolaboilerorHeatNetnet work TheboilerorboilernetworkwilloperateasintheHeatNetl...

Page 15: ...has been running For instance Register 29 65536 Register 30 Boiler 1 runtime in seconds Boiler 1 is the master boiler Boilers 2 16 are member boilers 0 4294967295 seconds BACnet or LonWorks protocols...

Page 16: ...ig ure 12 Install a fused service switch mounted and installed in accordance with all appli cable codes 1 2 3 4 5 6 7 8 9 1 1 2 3 Figure 11 Electrical connection board see item 10 page 3 for location...

Page 17: ...pocketing in the top of the heat exchanger Thepostpurgecirculatorisfactory pipedandpre wired Do not change the usage the wiring the location or the piping Boiler circulator See the Boiler manual for c...

Page 18: ...return water temperature sensor DHW wiring ONLY if using DHW override mode The boiler or boilers must be piped with isolation valves and wired for override operation Override of the 4 20mA input will...

Page 19: ...19 P N 42 9452 8 08 Copyright Hydrotherm KN USER S CONTROL MANUAL Method 3 External 4 20ma control continued 3 Figure 16 KN wiring summary wiring to electrical connection board...

Page 20: ...yright Hydrotherm KN USER S CONTROL MANUAL Method 3 External 4 20ma control continued 3 KN 2 only Figure 17 KN wiring summary wiring to electrical connection board continued see Figure 7 page 9 for te...

Page 21: ...revent the boiler for attempting to cycle during the setup process See Control menus and adjustments beginning on page 22 for a complete list of control parameters and explanations Carefully read the...

Page 22: ...wn providing information on various setpoints and parameters The display LOC SET means the setpoint temperature Figure 18 shows the fac tory default values Accessing setup menus With the display in ST...

Page 23: ...ARVALUES Display only not changeable here shows values for 8 zones 70 70 70 70 70 70 70 70 OUTDOOR AIR OA SHUTDOWN OFF ON or OFF OA SHUTDOWN OFF OA SETPT 68 F 40 to 100 F OA SETPT 68 F OA RESET OFF ON...

Page 24: ...minutes 10 MINUTES 0 SECONDS SHED BOILER DLY 2 minutes 0 to 15 minutes 2 MINUTES 0 SECONDS MOD DELAYTIME 10 seconds 0 to 60 minutes 0 MINUTES 10 SECONDS MOD MAX LAST 50 25 to 100 STOP MOD MAX 50 STOP...

Page 25: ...HW Demand terminals see a closed contact DHW tank temperature control calls for heat for example OP LIMIT SETPOINTS This is the temperature at the boiler outlet or header sensor that will cause the co...

Page 26: ...e High water at low outside air means the design water temperature for maximum load at ODT or outside design temperature for the installation The other end of the reset curve is the low water temperat...

Page 27: ...PROTECTION AUX FUNCTIONS Select YES to have the control alarm and disable the DHW demand input if a DHW demand lasts for more than 60 minutes SYSTEM CLOCK Set the system clock time day of week month...

Page 28: ...left at factory default D ERIVAT ADVANCED SETUP MODULATION PID This parameter should generally be left at factory default BAND ADVANCED SETUP MODULATION PID This parameter should generally be left at...

Page 29: ...omputer The program will start and show an option screen Select Install USB Drivers to install the program onto the computer After the USB driver installation is complete select Install Firmware Updat...

Page 30: ...ough the log entries entry number and date are on the first line of the log screen Each log entry includes three screens as described below The top line remains the same in all three and contains the...

Page 31: ...ected to it If all grounding is correct there may be an issue with radiated or induced electrical noise interference Thismaybecausedbyarcingacrossacontactor scontactswhenstartingapumpmotororalargeelec...

Page 32: ...up the header sensor is auto detected If the temperature of the header sensor at power up is greater than 25 F and less than 240 F it is considered a valid sensor The boiler will default to the MEMBER...

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