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P/N 42-9534 8/08 Copyright 2008 Hydrotherm

KN-SERIES   GAS-FIRED DIRECT VENT CAST IRON BOILERS – CONTROL MANUAL

Level 1

 

next item

 

to select

Level 2

 

next item

 

to select

 

back one level

Level 3

 

next item

 

to select

 

back one level

Default   {Range}

   to change value

  to accept value and return to previous menu level

Typical line

(Display shows four lines at a 
time; cursor indicates active 
line)

KN

   V X.X

Shows fi rmware version number

    

KN

 SERIES V 2.45

BOILERS

# OF BOILERS

1  {1 to 16} — display only — gives the number of boilers on a HeatNet network

   # OF BOILERS    1
   LEAD BOILER #   1
   HEAT BAND    30°F
HNT 123456789

¹₀¹₁¹₂¹₃¹₄¹₅¹₆

LEAD BOILER #

Always shows “1” — display only, not adjustable

HEAT BAND

30 °F {10 to 50°F}

HEAT NET BOILERS
123 . . .

Display only, on MASTER boiler only — shows the H-NET ADDRESS of each boiler 
detected on the HeatNet network (from 1 to 16)
NOTE that the MASTER address, actually 255, is shown as 1 in this display

SETPOINTS

LOCAL SETPT    or
SYSTEM SETPT

180°F  {40 to 180°F}
SYSTEM SETPT will appear if a sensor is connected to the SYS/DHW HEADER 
terminals. Otherwise, the display will show LOCAL SETPT.

 LOCAL SETPT   180°F
 OPERATE LIM    10°F
   OP LIM BAND 215°F
 SETPT SOURCE   AUTO

OPERATE LIMIT

205°F  {145 to 205°F} 

OP LIM BAND

10°F  {1 to 50°F} 

SETPT SOURCE

AUTO  {AUTO, 4-20MA} (NOTE:  If 4-20MA is selected, the control setup menu 
will automatically open the ADVANCED SETUP | 4-20MA INPUT menu to allow 
setting the operating levels to match the 4-20MA remote signal controller 
requirements.)

OUTDOOR AIR

OA RESET

OFF  {ON or OFF}

  OA RESET       OFF
  WARMWEATHER  SD NO
  OA SETPOINT   68°F
  SET OA SETPOINTS

WARM WEATHER SD

NO {YES or NO}

WWS SETPOINT

68°F  {40 to 100°F}
If the OA OVR input is closed, outdoor reset and warm weather shutdown are 
overridden. The boiler will run at LOCAL/SYSTEM SETPOINT.

SET OA SETPTOINS

WATER TEMP
AT
HIGH OA TEMP

140°F  {60 to 150°F}

70°F  {50 to 90°F}

  WATER TEMP    40°F
      AT
  HIGH OA TEMP  70°F
  NEXT

WATER TEMP
AT
LOW OA TEMP

180°F  {70 to 180°F}

10°F  {-35 to +40°F} 

  WATER TEMP   180°F
      AT
  LOW OA TEMP   10°F
  BACK

Table 7

 

SETUP

 menus (

see Table 9, page 30 for explanations

)

To enter Setup:  From STANDBY, hold 

 for 5 seconds. (If SKIP PASSWORD is set to OFF, you will have to enter the password.)

Then press 

 with cursor on 

SETUP

.

Make sure there is no call for heat at the boiler before attempting to perform setup adjustments.

To return to STANDBY, press/release 

 until the display returns to standby, or turn boiler ON/OFF switch off , then on.

Control menus and adjustments 

(continued)

6

Summary of Contents for HeatNet KN-10

Page 1: ...ion with contaminated air follow the instruction manual guidelines to clean repair or replace the boiler if necessary Affix these instructions near to the boiler Instruct the building owner to retain...

Page 2: ...etpoint can be determined by the HeatNet control or by a 4 20 milliamp input signal Network boilers can be operated by override commands for increased versatility Thismanualisarrangedsotheinstructions...

Page 3: ...cal enclosure Electrical components Electrical enclosure Control panel 4 line digital display and navigation buttons Electrical connection panel Electrical subpanel Power connection strip for KN 6 and...

Page 4: ...ter boiler or by a 4 20ma input from an external controller Memberboilerscanoverridemasterboilercontroliftheyreceiveacontactclosure on the HEAT DEMAND terminals or the AA high fire terminals In additi...

Page 5: ...n the 4 20mA controls can be set up to make 4 20mA the highest priority if desired 5 Control menus and adjustments page 24 OperatingparametersandcontrolbehaviorsaresetusingtheKNcontrol sdisplay keypad...

Page 6: ...conductors with a minimum size of 14 awg Use appropriate wiring materials for units installed outdoors Wiring See page 16 for wiring information and wiring diagrams Note that the boiler can be wired f...

Page 7: ...or keep default Enable if desired Enable if desired LOCAL PUMP DELTATEMP ENABLE DELTATEMP POST PRGTIME ALWAYS ENABLED Settings for boiler pump Enable if desired requires installing a return water temp...

Page 8: ...he latest revision of the National Electrical Code ANSI NFPA 70 Installation should also conform to CSA C22 1 Canadian Electrical Code Part I if installed in Canada Install a separate 120 volt 15 amp...

Page 9: ...member boiler following the guidelines given in Table 3 Start up boilers per KN I OM Turn off power to all boilers Follow all instructions in the KN Series Gas Boiler Installation Operating Instructi...

Page 10: ...NT OA SETPTS Enable if used Enable if used Set if used Set if used requires outdoor sensor Not applicable to member boiler unless boiler is to operate in override mode SYSTEM PUMP POST PRGTIME ALWAYS...

Page 11: ...nly if using BMS operation MODULAR BOILER SET ADD DELAYTIME SHED DELAYTIME MODULATE DELAYTIME MOD MAX LAST FIRE Adjust timings as needed to match control operation to system response Not applicable to...

Page 12: ...HEATNETBOILERS display Themas ter control will show the boilers it recognizes If the display shows a blank space such as 123_56789 the control does not de tect the missing boiler boiler 4 Check the ye...

Page 13: ...Gas Prove 26 Return Sensor not Present 11 Spare 4 27 Outside Air Sensor not Present 12 Operator Interlock 28 13 Water Prove Flow Interlock 29 14 Air Prove UV Sensor Interlock 30 Master Boiler 15 MainV...

Page 14: ...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 Install the correct bridge to adapt to bui...

Page 15: ...KN 10 208 230 240 VAC 1 60 20 amp for KN 20 A properly rated shut off switch should be located at the boiler The boiler must be grounded in accordance with the authority having jurisdiction or if none...

Page 16: ...r sensor ONLY to the master boiler Install the header sensor in an immersion well Locate the sensor where it will accurately sense the sys tem water supply temperature 1 2 Connect the sensor leads to...

Page 17: ...emperature from overriding boilers to the DHW Setpoint 1 2 1 Override operation control setup MEMBER boilers must be set up with operating parameters necessary during their override local operation A...

Page 18: ...therm KN SERIES GAS FIRED DIRECT VENT CAST IRON BOILERS CONTROL MANUAL Wiring continued Figure 4 KN HeatNet control field wiring also see KN Gas Boiler Installation Operation Instructions Verify again...

Page 19: ...19 P N 42 9534 8 08 Copyright 2008 Hydrotherm KN SERIES GAS FIRED DIRECT VENT CAST IRON BOILERS CONTROL MANUAL Wiring continued Figure 5 KN HeatNet temperature sensors 5...

Page 20: ...20 P N 42 9534 8 08 Copyright 2008 Hydrotherm KN SERIES GAS FIRED DIRECT VENT CAST IRON BOILERS CONTROL MANUAL Wiring continued Figure 6 Field wiring relays interlocks and boiler status 5...

Page 21: ...21 P N 42 9534 8 08 Copyright 2008 Hydrotherm KN SERIES GAS FIRED DIRECT VENT CAST IRON BOILERS CONTROL MANUAL Wiring continued Figure 7 Field wiring connections for 4 20mA remote operation 5...

Page 22: ...P N 42 9534 8 08 Copyright 2008 Hydrotherm KN SERIES GAS FIRED DIRECT VENT CAST IRON BOILERS CONTROL MANUAL Wiring continued Figure 8 Field wiring connections for on off and two stage firing options...

Page 23: ...534 8 08 Copyright 2008 Hydrotherm KN SERIES GAS FIRED DIRECT VENT CAST IRON BOILERS CONTROL MANUAL Wiring continued Figure 9 Installation of optional BACnet or LonWorks bridge protocessor for MODBUS...

Page 24: ...values Adjusting setpoint temperature while in Standby The local setpoint temperature LOCAL SET or system setpoint temperature SYS DHW HEADER can be adjusted using the SETUP menus or by pressing down...

Page 25: ...OP LIM BAND 215 F SETPT SOURCE AUTO OPERATE LIMIT 205 F 145 to 205 F OP LIM BAND 10 F 1 to 50 F SETPT SOURCE AUTO AUTO 4 20MA NOTE If 4 20MA is selected the control setup menu will automatically open...

Page 26: ...OFF DELTA TEMP ENAB OFF DELTA TEMP 10 POST PRG TIME 2M ALWAYS ENABLED OFF DELTATEMP 10 F 0 to 50 F POST PRGETIME 2 minutes 1 to 60 minutes ALWAYS ENABLED OFF ON or OFF PUMP VALVE OPTION MASTER PUMP V...

Page 27: ...R TYPE LINKED COMMON LINKED COMMON or INDEPENDENT TYPE LINKED COMMON IN USE NO INPUT J12B DAMPER PROOF TIME 2 00 IN USE NO YES or NO INPUT J10B DAMPER J10B DAMPER or J12B terminal 7 Change only when r...

Page 28: ...ET MASTER YES Display only not changeable here MEMBER boilers will show NO and addresses must be set from 2 to 16 H NET ADDRESS Master default 255 not changeable Member default 2 Range 2 to 16 MODBUS...

Page 29: ...MA ENABLE terminals J12A To set to HIGH make sure SETUP SETPOINTS SETPOINT SOURCE is set to AUTO PASSWORD Default AAAAAA Restore to default by pressing while turning ON OFF switch to ON Password mustb...

Page 30: ...POINTS Setpoint temperature controlled by the KN control Local setpoint refers to boiler supply temperature System setpoint appears if there is a sensor connected to the SYS DHW HEADER sensor terminal...

Page 31: ...Specifies where the space heating setpoint temperature comes from AUTO With AUTO selected the KN HeatNet control determines the setpoint using local setpoint outdoor reset or SYS DHW HEADER temperatu...

Page 32: ...flow proving switch across SYSTEM WTR FLOW terminals J11A Place a jumper on these terminals if system flow proving is not used POST PRG TIME keeps the pump running for the specified time after call f...

Page 33: ...signator for the setback operation Up to four 4 setback operations can be programmed ENTRY IS NIGHT SETBACK Select ON to enable a setback operation Then program the times days and setpoint The setpoin...

Page 34: ...NO the boiler will only operate if activated by an override input AA 4 20mA enable or T1 T2 When set to YES the boiler will revert to LOCAL operation controlling its outlet water temperature to the L...

Page 35: ...rom 2 through 16 The Master boiler H NET address is automatically set to 255 The master boiler is automatically recognized because it is the one with a sensor wired to its SYS DHW HEADER terminals MOD...

Page 36: ...or is correctly connected If so the sensor input is bad Contact Mestek for recommended action If the trim setting is acceptable press the SELECT key to accept The display will show TRIM VALUE SET Afte...

Page 37: ...The control cannot be placed in LOCAL mode if this PRIORITY is enabled and active CHANGE PASSWORD ADVANCED SETUP PASSWORD Use to set change a password NOTE You can reset the password to the default v...

Page 38: ...will auto start if on disk manually execute the program if working from a file on the computer Follow the instructions as the program progresses If a separate option is provided to install USB drivers...

Page 39: ...librationmode andwillshow CALIBRATE on the display The first screen will show the following The value shown for temperature is the SYSTEM or LOCAL setpoint MEMBER boilers will show LOCAL SET in stead...

Page 40: ...heat to the system or demand changes 1 2 3 4 5 6 The upper left of the display will show boiler condition prepurge etc astheboilerbeginsitscycle Aftertheboiler begins firing the screen will show RUN a...

Page 41: ...M of modulation All of the boilers that are firing Master See Figure 12 for an explanation of the data on the screen 1 2 3 Noticethesnapshot Thisisalogentry ofwhichthereareupto1 000 As soon as you ent...

Page 42: ...he temperature shown is the value detected at the sensor listed FAULT SUPPLY COMBUSTION AIR DAMPER 168 F MASTER boiler Automatically resets control after external limit closes MEMBER boiler or stand a...

Page 43: ...lected for display The temperature shown is the value detected at the sensor listed FAULT SUPPLY INTERLOCK SPARE 3 168 F Automatically resets control after condition is corrected INTERLOCK SPARE 4 J11...

Page 44: ...on controlling to either the LOCAL or SYSTEM setpoint until the condition is corrected The display continues showing the SUPPLY HEADER or other temperature whichever had been selected for display The...

Page 45: ...here may exist a grounding problem with the controller or one of the boilers pumps contactors or other devices connected to it If all grounding is correct there may be an issue with radiated or induce...

Page 46: ...on controls contactors etc 1 2 3 4 Only the MASTER boiler Fires but the system has many boilers and is using H Net In order for the MASTER boiler to act as a MASTER the header sensor must be set to TY...

Page 47: ...o act as a MASTER the header sensor must be set to TYPEZ and there must be a header sensor present At power up the header sensor is auto detected If the temperature of the header sensor at power up is...

Page 48: ...SET OA RESET OFF OA SETPOINT 68 F OVERRIDE RESET NO SET OA SETPOINTS WATER TEMP AT HIGH OA TEMP 140 F 70 F WATER TEMP AT LOW OA TEMP 180 F 10 F PUMP OPTIONS SYSTEM PUMP POST PURGE TIME 2 minutes ALWAY...

Page 49: ...IME OPTIONS TEMP SCALE F KEY CLICK ON SKIP PASSWORD ON BRIGHTNESS 50 LOG RUNTIME RUN HOURS DATA LOG ENTRY SIZE BOILER CYCLES AUX FUNCTIONS COMBUST AIR DAMPER IN USE NO OUTPUT RELAY J10B DAMPER PROOF T...

Page 50: ...OFFSET 5 F BOILER START TIME 50 seconds MODULATION PID Factory set not adjustable FIRING MODE FIRING MODE TRUE ROTATION MASTER FIRST OFF SENSORS SENSOR OUTSIDE TYPE TYPE Z CALIBRATED SENSOR SUPPLY TYP...

Page 51: ...208 230 240 VAC 1 60 with neutral KN 20 208 230 240 VAC 1 60 with neutral Relays Stage Circulator Alarm 8A 250 VAC AC Interlocks 24 VAC 120 VAC input Control Inputs AA Heat Demand 4 20ma Enable OA ov...

Page 52: ...of Advanced Thermal Hydronics 260 North Elm Street Westfield MA 01085 Tel 413 564 5515 Fax 413 568 9613 7555 Tranmere Drive Mississauga ONT L5S IL4 Canada Tel 905 672 2991 Fax 905 672 2883 www hydrot...

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