HydroTherm HeatNet KN -6 User Information

[Page 1] HydroTherm HeatNet KN -6

Copyright 2014 Mestek, Inc. This manual is intended only for use by a qualified heating installer/technician. Read and follow this manual, all supplements and related instructional information provided with the boiler. Install, start and s...

[Page 2] HydroTherm HeatNet KN -6

TABLE OF CONTENTS HeatNet Control V3 2.x Page 2 TABLE OF CONTENTS TABLE OF CONTENTS .............................................................................................................................. 2 Introduction .................

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TABLE OF CONTENTS HeatNet Control V3 2.x Page 3 Security .................................................................................................................................................... 33 Saving Configuration Settings .....

[Page 4] HydroTherm HeatNet KN -6

FEATURES & SPECIFICATIONS HeatNet Control V3 2.x Page 4 Introduction The KN-Series V3 HeatNet Control The KN-Series V3 boiler control is the third generation of the HeatNet control platform. Control hardware has been added to make use of...

[Page 5] HydroTherm HeatNet KN -6

FEATURES & SPECIFICATIONS HeatNet Control V3 2.x Page 5 100%. This ―boiler efficiency‖ clamp is defaulted to 70% and thus limits all of the boilers individual outputs to 70% until the last boiler fires. All running boilers modulate ...

[Page 6] HydroTherm HeatNet KN -6

FEATURES & SPECIFICATIONS HeatNet Control V3 2.x Page 6 Features & Specifications HeatNet Version 3.x Discontinued Features from Version 2.x Control 1. With this hardware release the service power, switched power, and the power s...

[Page 7] HydroTherm HeatNet KN -6

FEATURES & SPECIFICATIONS HeatNet Control V3 2.x Page 7 10. Menu driven calibration and setup menus with a bright (Adj.) 4 line Vacuum Fluorescent Display. 11. (8) Dedicated 24vac interlock monitors, and 8 dedicated 120vac system mon...

[Page 8] HydroTherm HeatNet KN -6

FEATURES & SPECIFICATIONS HeatNet Control V3 2.x Page 8 Specifications Control Microprocessor based PID modulating control ( NOT a safety limit ) Environment -40 °F to 140 °F, <90% RH non-condensing Input Power 24 VAC, 500 ma...

[Page 9] HydroTherm HeatNet KN -6

Page 9 Components & Accessories Part Number Component 02-4297 KN-Series Control Board Version 3.x 02-4278 Graphics Display Board Color Touch Panel Display 02-3926 ACI/10K-CP-BP Temperature probe (bullet type, 1x.250 inch) 02-428...

[Page 10] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 10 SETUP & OPERATION Basic Multi Boiler System Operation For boiler system setup/installations please refer to Refer to the 2008 ASHRAE Handbook, CH12 or later revision. A basic multi...

[Page 11] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 11 valve from terminal 9 to J5 Main Valve. The H-Net display indicates 'Run'. 10. If main-flame is detected the H-Net control holds the burner at the low-fire rate for the MODULA...

[Page 12] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 12 configured as PRIORITY 1 with the highest runtime will be stopped LAST (example). As long as the stop condition and SHED DELAY time are met, all remaining PRIORITY 1 set of boilers will ...

[Page 13] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 13 Start/Stop Priority Conditions The following is an example using mixed condensing and non-condensing boilers: FIRE FIRST Condensing boilers may be configured to fire first (set to PRIO...

[Page 14] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 14 The return water temperature sensor would need to be moved from the Master‘s return inlet to the system return. The EXCHGR DELTA may need to be adjusted in SETUP:AUX FUNCTIONS:HEAT ...

[Page 15] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 15 added. The min fire rate is equal to the minimum BTUs that can be delivered to the system. Number of boilers * Turndown Ratio = Effective System Turndown: 5 * 5:1 = 25:1. Figure 5 Mi...

[Page 16] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 16 EXCEPTION NOTES: 1. Mixing more than two different size/type boilers becomes more complex than the scope of this manual. 2. If using more than one Priority 1 boiler and the calculated...

[Page 17] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 17 Figure 9 Boiler System Response 2 (1) KN6, (1) KN20, 60% Mod-Max To correct this would require the KN6 to set the MOD- MAX to roughly 90% (Boiler System Response 3: not as efficient a...

[Page 18] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 18 Mixed System Type 2: Condensing / Non-Condensing This mixed system may also have mixed boilers with differing sizes as outlined in the Mixed System Type 1: High System Turndown section....

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SETUP & OPERATION HeatNet Control V3 2.x Page 19 not happen. Even then, the load may be too great. The following note will explain an alternative way (not depending on the ADD BOILER DELAY) to keep non- condensing boilers from firing in ...

[Page 20] HydroTherm HeatNet KN -6

SETUP & OPERATION HeatNet Control V3 2.x Page 20 KN Boiler Btu Chart (MBH) KN2 KN4 KN6 KN10 KN20 KN30 Max Input 200 400 600 1MM 2M 3M Min Input 5:1 40 80 120 200M 400 600 Mod Max 80% 160...

[Page 21] HydroTherm HeatNet KN -6

CONTROL METHODS HeatNet Control V3 2.x Page 21 Base Loading, Relay Control The control has the ability to control (1) base load boiler using the K8 Relay contacts on J4 pins 2 & 6. In order to connect to this plug, (2) wires with pin...

[Page 22] HydroTherm HeatNet KN -6

CONTROL METHODS HeatNet Control V3 2.x Page 22 Not Preferred: Example of having a larger Base Load boiler that is not of the modulating type: If there is a 6 Million BTU Base Load boiler running with (3) 2 million BTU HeatNet boilers, a s...

[Page 23] HydroTherm HeatNet KN -6

CONTROL METHODS HeatNet Control V3 2.x Page 23 Setting up base loading The base load boiler is controlled using a set of contacts to enable it (location J4). Enabling/Disabling this relay contact can be done using any combination of (3) qu...

[Page 24] HydroTherm HeatNet KN -6

CONTROL METHODS HeatNet Control V3 2.x Page 24 Heating Control Methods An overview of the (5) methods for controlling the KN series boiler are presented here. They are outlined in more detail at the end of this section. Heating Method 1 ...

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CONTROL METHODS HeatNet Control V3 2.x Page 25 Priority 2 The HEAT DEMAND input is the next, and provides the means to operate the boiler in LOCAL MODE when an external control is not present, has failed, or needs to be enabled or disabled...

[Page 26] HydroTherm HeatNet KN -6

CONTROL METHODS HeatNet Control V3 2.x Page 26 4-20ma control signal to a setpoint mapped between 50F and 220F. These (2) temperatures are adjustable to provide a setpoint range. The minimum start current is also adjustable between 3.71 and...

[Page 27] HydroTherm HeatNet KN -6

CONTROL METHODS HeatNet Control V3 2.x Page 27 Heating Method 5 MODBUS communications The fifth method uses an RS485 digital communications cable with the MODBUS protocol to control the boiler using the H-Net network. The Boiler or Boiler ...

[Page 28] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 28 Using the 4-20ma input (OPTIONAL) The 4-20ma input is designed to operate per the ISA-50.1 standard. It will support Type 2, Type 3, and Type 4 Transmitter/Receiver circuits. The Type 2 and...

[Page 29] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 29 For non Ametek blowers, the minimum setting of the boiler is calibrated so that the minimum PWM signal to control the Blower motor is 20%. The VFD to blower motor operates with a control s...

[Page 30] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 30 Circulator Pump Options There are provisions for a system pump(s) and a local pump. This is to allow for primary/secondary loop configurations. The system circulator pump is implemented using...

[Page 31] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 31 prove, the control changes to the first pump and attempts to prove flow. This cycle will continue indefinitely until flow is established. If flow is lost while running: this process is also u...

[Page 32] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 32 jumper on the control board is in position 0-10 or 4-20mA as required. Auxiliary Function Options Relay K5 and the terminal J13 DAMPER is used to control a combustion air damper. J12B.7 &...

[Page 33] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 33 when a contact is closed across this input. This can be used as a Domestic Hot Water demand input. Another function of the OUTDOOR RESET is the Winter/Summer mode ( (W)arm (W)eather (S)hutd...

[Page 34] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 34 Selecting USB CABLE requires connecting a USB cable and running the Firmware Update program from a PC. This process takes much longer and requires a Personal Computer (laptop) to be taken to ...

[Page 35] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 35 Communications The H-Net control has the ability to communicate using the MODBUS protocol with a building management system. Most registers and functions are available for MODBUS access. Acc...

[Page 36] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 36 temperature at which the boiler will turn ON. Once the temperature at this sensor falls below the LOW TEMP temperature the boiler will start and fire to its LOCAL setpoint. Once the Boiler re...

[Page 37] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 37 2. Boilers Limited Control: This feature allows the BMS to directly change the amount of boilers that HeatNet can control. To Activate the Boiler limited feature: a. Read Modbus addre...

[Page 38] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 38 Once the user has logged in, a selection screen for the building sites the user has registered will be displayed. When a building site is selected, the main Live screen will be entered. Thi...

[Page 39] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 39 Domestic Hot Water Methods Domestic Hot Water control is supported using (6) methods. When using the Domestic Hot Water methods, the wire jumper, JPS1 on each control board providing Domestic...

[Page 40] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 40 UPPER DHW DIFF) and boilers are firing. After a DHW call for heat ends: A. The pump will remain on during a post purge pump cycle until the post purge timer expires. 2. Next, enter the DO...

[Page 41] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 41 12. Set the HYB SENSOR = OFF. This sensor is selectable for Method 5A only. Now in the, ADVANCED SETUP:DISTRIBUTED CTRL: MASTER TYPE select DHW. NOTE: JPS1 MUST be cut on all boilers pro...

[Page 42] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 42 may require in its backup role. Then one of the local DHW control methods can be used to implement DHW heating. One advantage to this configuration is that a BMS can control the system throu...

[Page 43] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 43 begins, what to do with the local pump/valve is determined: NO The local pump/valve will remain running during DHW heating. YES The local pump will shut off with a delay determined by LOCAL...

[Page 44] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 44 the tank setpoint is set to 140F and the heat band is set to 10F, then the tank temperature will rise to 145F before the first boiler turns off (setpoint =140F +/- heat band/2). With (2) bo...

[Page 45] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 45 sensor‘s temperature drops below the DHW Setpoint + Lower Diff). The boiler will stop space heating (if running) and switch to DHW heating. The DHW pump/valve will be engaged and the water ...

[Page 46] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 46 30. Scroll down to USE SENSOR? Press the SELECT key and select YES, then press the SELECT key again. This will allow the boiler to control the local tank or DHW loop temperature using the D...

[Page 47] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 47 Supply sensor will limit the temperature/firing rate of the boiler, but may not be sufficient for continuous demand or speed in heating the tank. It is already available, so no additional sen...

[Page 48] HydroTherm HeatNet KN -6

OPTIONAL FEATURES HeatNet Control V3 2.x Page 48 Wiring Connections Figure 28 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 th...

[Page 49] HydroTherm HeatNet KN -6

WIRING CONNECTIONS HeatNet Control V3 2.x Page 49 Figure 29 Heating Method 1 H-Net, Master/member MODBUS RJ45 HeatNet In and Out 3 wire Shielded HeatNet In and Out HeatNet Boiler to Boiler Communications Heat...

[Page 50] HydroTherm HeatNet KN -6

WIRING CONNECTIONS HeatNet Control V3 2.x Page 50 Figure 30 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 T...

[Page 51] HydroTherm HeatNet KN -6

WIRING CONNECTIONS HeatNet Control V3 2.x Page 51 Figure 31 Heating Method 3 4–20 ma/ 0-10 VDC Closing this contact enables the 4-20 mA/ 0-10 VDC input on channel 1 Channel 1: 4-20mA/0-10VDC Channel 2: 4-20mA/0-10VDC (+) 24 VDC (+) (-...

[Page 52] HydroTherm HeatNet KN -6

WIRING CONNECTIONS HeatNet Control V3 2.x Page 52 Figure 32 Heating Method 5: MODBUS (Optional BACnet or LonWorks bridge — Protocessor) 3 wire Shielded Modbus Modbus Termination. Enable: Switches DOWN Position. Disable: Switche...

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WIRING CONNECTIONS HeatNet Control V3 2.x Page 53 Figure 33 Relays, Interlocks and Boiler Status The Highest priority Low Voltage Interlocks, 24VAC Factory ------------------------------ Water Flow Switch----------------- Operator------...

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WIRING CONNECTIONS HeatNet Control V3 2.x Page 54 Figure 34 Temperature sensors T T T T T All Temperature Sensors are 10k Thermistors. Immersion sensors require a well. (OPTIONAL) Water Temperature Common System Supply (Header) (REQUIRE...

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WIRING CONNECTIONS HeatNet Control V3 2.x Page 55 Figure 35 Typical Single Boiler System #4 #3 #2 #1 #8 #14 #7 #11 #9 #10 #5 #13 #12 IGN Control Connections High Limit Heat Demand* *Note: When using DHW MASTER? YES, a Heat Demand sig...

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WIRING CONNECTIONS HeatNet Control V3 2.x Page 56 Figure 36 Using a 4–20ma signal for direct modulation 100% Boiler Output 0% Boiler Off Ignition 100% 0% Percent of Boilers Output Percent of Boilers OUTPUT Ignition 4mA 20mA Control Signal...

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WIRING CONNECTIONS HeatNet Control V3 2.x Page 57 Figure 37 Common system damper wiring DAMPER 24 VAC Ret DAMPER 24 VAC Transformer DAMPER Prove Switch DAMPER Enable 24 VAC Mains MASTER BOILER MEMBER BOILER 1 Connection if Member bo...

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WIRING CONNECTIONS HeatNet Control V3 2.x Page 58 Figure 38 Failsafe common 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 S...

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Calibration HeatNet Control V3 1.x Page 59 Calibration The calibration of the KN-Series boiler should only be performed by a licensed technician. To enter the calibration menus, place the S2 switch on the main control board to the CAL p...

[Page 60] HydroTherm HeatNet KN -6

LOG ENTRY HeatNet Control V3 1.x Page 60 Log Entry The KN-Series H-Net control contains a log that records the major activity (events) in the operation of the boiler. This activity includes interlock faults, boiler starting and stopping eve...

[Page 61] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 61 Default Settings & Menu Item Descriptions — SETUP MENU DEFAULT VALUE RANGE DESCRIPTION BOILERS # OF BOILERS 1 (1-16) If operating as a membe...

[Page 62] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 62 If ROTATION is set to PUMP HRS, ROTATE TIME is used to switch pumps when the pump‘s time difference is greater than ROTATE TIME. Whichever pump has the least t...

[Page 63] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 63 TIME 12:00AM Time of the day to end the setback OPTIONS TEMP SCALE F (F or C) Fahrenheit scale is default KEY CLICK ON Beeps when...

[Page 64] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 64 in LOCAL. The boiler will continue to run in LOCAL until communications are re-established or this entry is set to OFF. LOW TEMP OFF This entry may be set ...

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DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 65 screen. TEMP<140F 140 135F – 200F Setting determines where the TEMP DISAB return sensor‘s threshold temperature disables the boiler from firing. ...

[Page 66] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 66 DHW heating. When this happens, the boiler will not shut down, but keep running during the change from space heating to DHW (Hot Swap). Once the DHW cycle complete...

[Page 67] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 67 location to maintain a setpoint at that location. RETURN In DHW Method 5A will maintain the DHW setpoint at the RETURN sensor when the OR OVR input is closed. SY...

[Page 68] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 68 boiler. A boiler is stopped immediately when the top of the heat band is exceeded. If a second boiler needs to stop, the SHEDBOILER DELAY will need to expire bef...

[Page 69] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 69 FIRING MODE MODE TRUE LOFO: Boilers are fired Last On, First Off starting with Lead Boiler FOFO: Boilers are fired First On, First Off TRUE: Boilers a...

[Page 70] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 70 SUPPLY outlet, water RETURN inlet, and system HEADER temperature. If the HEADER sensor is used (TYPEZ), that boiler performs the tasks of the MASTER boiler. If the...

[Page 71] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 71 update of its value to keep from timing out and returning control to the H-Net control. If set to ―OFF‖, MODBUS always has control and on a loss of MODBUS c...

[Page 72] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 72 4-20mA. If the INPUT TYPE is set to BMS, a Flow Limited or a Boilers Limited method can be used. With Flow limited a GPM value can be written to the BMS GPM Modbu...

[Page 73] HydroTherm HeatNet KN -6

DEFAULT SETTINGS & MENU ITEM DESCRIPTIONS HeatNet Control V3 2.x Page 73 switch placed in the CAL position. If the control is power cycled in this condition, the factory program will overwrite the existing running program. If in the LOA...

[Page 74] HydroTherm HeatNet KN -6

MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 74 MODBUS Communications The KN-Series control can be controlled using Modbus commands to Enable/Disable the boiler/system. A connection to the Console Modbus Port on the Communications boar...

[Page 75] HydroTherm HeatNet KN -6

MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 75 Figure 40 MODBUS Input/Output Variables (Read/Write) Address Name Raw Data Type Scale Description Valid Values/Range 40012 SetYear 8 bit unsigned --- Set real time c...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 76 Figure 41 MODBUS Input Variables (Read Only) Address Name Raw Data Type Scale Description Valid Values/Range 30015 Weekday 8 bit unsigned --- Real time clock weekda...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 77 Figure 41 MODBUS Input Variables (Read Only) Address Name Raw Data Type Scale Description Valid Values/Range 30055 Boiler04RuntimeLow16 Example Boiler01Runtime = (B...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 78 Figure 41 MODBUS Input Variables (Read Only) Address Name Raw Data Type Scale Description Valid Values/Range 30095 Boiler16Status3 ----- The following registers are ava...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 79 Figure 41 MODBUS Input Variables (Read Only) Address Name Raw Data Type Scale Description Valid Values/Range 30134 Boiler04CyclesHigh16 Boiler##CyclesHigh16:Boiler##Cyc...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 80 Figure 41 MODBUS Input Variables (Read Only) Address Name Raw Data Type Scale Description Valid Values/Range 30174 Boiler15Status4 30175 Boiler16Status4 30176 … ...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 81 Figure 41 MODBUS Input Variables (Read Only) Address Name Raw Data Type Scale Description Valid Values/Range 3) A calculated setpoint if running in Outdoor Air Reset Mode ...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 82 Figure 42 MODBUS — BoilerStatus1 Flags Bit Description Valid Values/Range 10 Return Sensor not Detected 0 = detected, 1 = not detected 11 Outside Sensor not Detected 0...

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MODBUS COMMUNICATIONS HeatNet Control V3 2.x Page 83 Figure 44 MODBUS — BoilerStatus3 Flags Bit Bit Bit 0 AA High Fire 0 = off, 1 = on 1 Heat Demand (Local Override) 0 = off, 1 = on (1) 2 4-20ma Remote Enable 0 = o...

[Page 84] HydroTherm HeatNet KN -6

TROUBLESHOOTING HeatNet Control V3 2.x Page 84 BoilerStatus4 Flags Bit Description Valid Values/Range 0 DHW Enabled (1) DHW Mode had been enabled in the menus. 0 = off, 1 = on (menu) 1 Combustion Air Damper Prove (1) ...

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TROUBLESHOOTING HeatNet Control V3 2.x Page 85 Troubleshooting This section is included as an aide to help troubleshoot problems with the setup and operation of the boiler. See Appendix A for additional fault messages. Situation: No...

[Page 86] HydroTherm HeatNet KN -6

TROUBLESHOOTING HeatNet Control V3 2.x Page 86 Situation: The boilers menu only indicates 1 boiler, but there are member boilers connected and the amber light blinks on all of the boilers communication’s jacks. 1. Ensure that the la...

[Page 87] HydroTherm HeatNet KN -6

TROUBLESHOOTING HeatNet Control V3 2.x Page 87 Situation: You have forgotten the password. 2. As a last resort, you can turn the controller off, then depress and hold the ESC key while turning it back on. This will load the default p...

[Page 88] HydroTherm HeatNet KN -6

TROUBLESHOOTING HeatNet Control V3 2.x Page 88 c. If the Member boiler is in Local Mode then it also would not be called and report unavailable to the Master. d. If the Local flow switch for the Local pump is wired to the System flow ...

[Page 89] HydroTherm HeatNet KN -6

TROUBLESHOOTING HeatNet Control V3 2.x Page 89 seconds (10 minutes) to the setpoint timer. If after 10 minutes (5 minutes longer than the normal write interval) the BMS has not written the timer, the saved setpoint values will be restor...

[Page 90] HydroTherm HeatNet KN -6

OPERATION HeatNet Control V3 2.x Page 90 KN HeatNet Control Run Screen Hold theBACK button down for 5 seconds to enter the SETUP menus CALIBRATE RUN %100 OUTSIDE RUN %100 SUPPLY RUN %100 RETURN RUN %100 HEADER RUN %100 SYSTEM SET RUN...

[Page 91] HydroTherm HeatNet KN -6

OPERATION HeatNet Control V3 2.x Page 91 KN HeatNet Control Run Screen - Continued DHW screens are available depending on the DHW mode of operation. RUN %100 NA SYS F...

[Page 92] HydroTherm HeatNet KN -6

OPERATION HeatNet Control V3 2.x Page 92 KN HeatNet V3 Menu Tree — ADVANCED THERMAL HYDRONICS HOME SCREEN MAIN MENU SCREEN ADVANCED MENUS RUN %100 SYSTEM SET 140°F Press and HOLD BACK button down for 5 seconds to enter the menu scree...

[Page 93] HydroTherm HeatNet KN -6

OPERATION HeatNet Control V3 2.x Page 93 KN HeatNet V3 Advanced Menu Tree – ATH L A S T L A S T M A X M A X MOD MOD D E L A Y D E L A Y - - MOD U L ATE MOD U L ATE F I R E F I R E CAL I CAL I BRA BRA TE? TE? NO NO PLA C E PLA C E A A...

[Page 94] HydroTherm HeatNet KN -6

WORKSHEET HeatNet Control V3 REV 2.x Page 94 Worksheet SETUP MENU BOILERS # of BOILERS LEAD STAGE HEAT BAND ° SETPOINTS SYSTEM/LOCAL SETPOINT ° ...

[Page 95] HydroTherm HeatNet KN -6

WORKSHEET HeatNet Control V3 REV 2.x Page 95 REMAINS ON: LOCAL PUMP VFD FLOW PROVE NIGHT SETBACK SETBACK ENTRY 1 2 3 4 ENTRY IS SETBACK ° ° ° ° SETBA...

[Page 96] HydroTherm HeatNet KN -6

WORKSHEET HeatNet Control V3 REV 2.x Page 96 DHW PRIORITY? POST PURGE USE SENSOR? SHARING LOCAL PUMP OFF LOCAL DELAY PURGE TO THE HYB SENSOR: ...

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WORKSHEET HeatNet Control V3 REV 2.x Page 97 FIRING PRIORITY PREDICT START BASE LOADING BASE LOAD BOILERS: START > MOD STOP DELAY TIME ...

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WORKSHEET HeatNet Control V3 REV 2.x Page 98 BOILER TYPE PRODUCT CONDENSING BTU IN BLOWER MASS ...

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HeatNet V3 2.x Page 99 Type II Thermistor Resistance/Temperature Table Temp C Temp F Resistance Temp C Temp F Resistance -40 -40 336,450 60 140 2,488 -35 -31 242,660 65 149 2,083 -30 -22 176...

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HeatNet V3 2.x Page 100 * Status Information Whenever an * is displayed on the RUN screen it indicates that there is more information available about the current running conditions. This information can be viewed by going to the *STATUS scre...