Centrometal CMNET Technical Instructions
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Centrometal CMNET Technical Instructions

Centrometal CMNET Technical Instructions

Cascade connection of peltec/peltec-lambda boilers
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HEATING TECHNIQUE
Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: +385 40 372 600, fax: +385 40 372 611
Technical instructions
ENG
for install and using the CMNET module -
cascade connection of PelTec/PelTec-lambda boilers
CMNET
(connecting PelTec/PelTec-lambda in a cascade)
TU-CMNET-12_1-2022-v2.88f-ENG

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  • Page 1 HEATING TECHNIQUE Centrometal d.o.o. - Glavna 12, 40306 Macinec, Croatia, tel: +385 40 372 600, fax: +385 40 372 611 Technical instructions for install and using the CMNET module - cascade connection of PelTec/PelTec-lambda boilers CMNET (connecting PelTec/PelTec-lambda in a cascade)
  • Page 2 "Master" if the previous "Master" was disconnected from the cascade for any reason. The "Master" boiler in cooperation with the CMNET module determines all actions within the cascade (determines when the next boiler will start/shut down, determines which boiler is "Leading Boiler"...).
  • Page 3 MASTER BOILER (device address: 1) MUST BE CONNECTED HERE PARAMETERS: 10.1.1. Configuration: Possible connection 4 (BUF) or 10* (CRO)* to the additional 10.1.2.1. Cascade: 1 CMNET equipment of boiler 1 10.1.2.3. Device number: 2 10.1.2.4. Device Address: 1 CMNET Boiler2 PARAMETERS: Possible connection 10.1.1.
  • Page 4 Possible connection to the additional equipment of boiler 1 Boiler1 (Master) PARAMETERS: 10.1.1. Configuration: 4 (BUF) or 10* (CRO)* 10.1.2.1. Cascade: 2 CMNET MASTER BOILER (device address: 1) 10.1.2.3. Device number: 3 MUST BE 10.1.2.4. Device Address: 1 CONNECTED HERE...
  • Page 5 1.3. SELECTION OF BOILER CONFIGURATION - (4 (BUF) / 10 (CRO)) Cascade can work (can be enabled) only on boilers that have selected configuration 4 (BUF) or configuration 10 (CRO). All boilers in the cascade must have the same configuration selected. * * * * Technical instructions CMNET...
  • Page 6 Configuring the cascade 1.4. CONFIGURING THE CASCADE * * * * Technical instructions CMNET...
  • Page 7 Possible selection: OFF, 1 CMNET, 2 CMNET OFF: Cascade is OFF 1 CMNET: cascade of 2 boilers - 2 boilers in cascade with 1 CMNET device. 2 CMNET: cascade of 2-7 boilers - 2 boilers in cascade with 2 CMNET devices.

  • Page 8: Device Number

    With this parameter, we define the number of boilers in the cascade. If we selected 1 CMNET under "CASCADE", then the number of devices must be 2. If we chose 2 CMNET, then the number of devices must be as many as there are boilers in the cascade (2-7). It is set on each boiler separately and must be the same number on all boilers in the cascade.
  • Page 9 D6 starts a new countdown, if this condition is not met, the time stands at zero and waits with the start of the countdown until this condition is fulfilled. With each modulation of any boiler in the cascade, the time is reset. Technical instructions CMNET...

  • Page 10: Time Difference

    TIME DIFFERENCE Factory: 100h Possible selection: min. 0h, max. 500h This parameter define after how many hours of work boilers change priority of work. It is set on each boiler separately and can be a different value. Technical instructions CMNET...

  • Page 11: Counter Reset

    "TIME TO ON"). * * * * Factory: 6°C Possible selection: min. 1°C, max. 15°C Technical instructions CMNET...

  • Page 12: User Interface

    - this boiler will have a STOP/START switch on the boiler screen Note: Before taking off the boiler from the cascade, it is necessary to turn off the "BOILER ACTIVATED" option, otherwise the boiler will start after removing it from the cascade. Technical instructions CMNET...
  • Page 13 2. If an individual boiler goes into error, the "BOILER ACTIVATED" option will automatically be turned off, after the error has been eliminated (corrected) and confirmed, the "BOILER ACTIVATED" option must be turned on if we want the "cascade" to control this boiler. Technical instructions CMNET...

  • Page 14: Cascade Screen

    (it's changing, "Leading" boiler has Boiler temperature number 1) Address (ordinal number) of the boiler in the cascade Boiler power Boiler operation counter (hours:minutes) State (phase) Indication of the of boiler operation state (phase) of boiler operation Technical instructions CMNET...
  • Page 15 " - °C". The boiler regulation will not report any error even if the sensors are defective. The "Master" boiler in cooperation with the CMNET module determines all actions within the cascade (determines when the next boiler will start/shut down, determines which boiler is "Leading Boiler"...).
  • Page 16 MASTER BOILER (device address: 1) MUST BE CONNECTED HERE PARAMETERS: 10.1.1. Configuration: Possible connection 11 (CRO/BUF) to the additional 10.1.2.1. Cascade: 1 CMNET equipment of boiler 1 10.1.2.3. Device number: 2 10.1.2.4. Device Address: 1 CMNET Boiler2 Possible connection PARAMETERS: to the additional 10.1.1.
  • Page 17 EXAMPLE: CASCADE 3-7 boilers Possible connection Boiler1 (Master) to the additional equipment of boiler 1 PARAMETERS: 10.1.1. Configuration: 11 (CRO/BUF) 10.1.2.1. Cascade: 2 CMNET MASTER BOILER 10.1.2.3. Device number: 3 (device address: 1) 10.1.2.4. Device Address: 1 MUST BE CONNECTED HERE Possible connection...
  • Page 18 2.3. SELECTION OF BOILER CONFIGURATION - (11 (CRO/BUF)) Cascade can work (can be enabled) only on boilers that have selected configuration 11 (CRO/BUF). All boilers in the cascade must have the same configuration selected. * * * * Technical instructions CMNET...

  • Page 19: Temperature Displays

    When ’’1 Temperature’’ is selected, screen shows hydraulic crossover with 1 temperature (not possible at 69/96). When ’’2 Temperatures’’ is selected, screen shows Accumulation (buffer) tank with 2 temperatures. This option can be changed only by authorized serviceman. 12-48 12-96 Technical instructions CMNET...
  • Page 20 Configuring the cascade 2.5. CONFIGURING THE CASCADE * * * * Technical instructions CMNET...
  • Page 21 Possible selection: OFF, 1 CMNET, 2 CMNET OFF: Cascade is OFF 1 CMNET: cascade of 2 boilers - 2 boilers in cascade with 1 CMNET device. 2 CMNET: cascade of 2-7 boilers - 2 boilers in cascade with 2 CMNET devices.
  • Page 22 With this parameter, we define the number of boilers in the cascade. If we selected 1 CMNET under "CASCADE", then the number of devices must be 2. If we chose 2 CMNET, then the number of devices must be as many as there are boilers in the cascade (2-7). It is set on each boiler separately and must be the same number on all boilers in the cascade.
  • Page 23 Possible selection: min. 0s, max. 3600s This parameter determines after how long operate "Leading boiler" at power (maximum) D3, last boiler go to extinction phase. It is set on each boiler separately and can be a different value. Technical instructions CMNET...

  • Page 24: External Control

    (ON/OF). If previous boiler loses electrical power managment takes over next boiler. To make this possible, external start must be performed with parallel connection on all boilers in cascade. Technical instructions CMNET...
  • Page 25 - this boiler will have a STOP/START switch on the boiler screen Note: Before taking off the boiler from the cascade, it is necessary to turn off the "BOILER ACTIVATED" option, otherwise the boiler will start after removing it from the cascade. Technical instructions CMNET...
  • Page 26 2. If an individual boiler goes into error, the "BOILER ACTIVATED" option will automatically be turned off, after the error has been eliminated (corrected) and confirmed, the "BOILER ACTIVATED" option must be turned on if we want the "cascade" to control this boiler. Technical instructions CMNET...
  • Page 27 (it's changing, "Leading" boiler has Boiler temperature number 1) Address (ordinal number) of the boiler in the cascade Boiler power Boiler operation counter (hours:minutes) State (phase) Indication of the of boiler operation state (phase) of boiler operation Technical instructions CMNET...
  • Page 28 Declaration of conformity Technical instructions CMNET...
  • Page 29 Notes Technical instructions CMNET...
  • Page 30 Notes Technical instructions CMNET...
  • Page 31 Notes Technical instructions CMNET...
  • Page 32 Centrometal d.o.o. assumes no responsibility for possible inaccuracies in this book originated typographical errors or rewriting, all the pictures and diagrams are principal and it is necessary to adjust each actual situation on the field, in any case the company reserves the right to enter their own products such modifications as considered necessary.

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