Crown Boiler AM4 Manual de instruções de instalação - Página 6
Procurar online ou descarregar pdf Manual de instruções de instalação para Fornecimento de caldeiras Crown Boiler AM4. Crown Boiler AM4 11 páginas. Module for bwc series boilers
Imprimir página(Required for 0-10VDC Input Modulation Applications Only)
The MCBA control in all BWC series boilers is factory programmed to respond to a call for heat from a room thermostat
connected to the boiler. If the AM4 is used for 0-10VDC external modulation, the MCBA must be reprogrammed, before
it will respond to the 0-10VDC signal. There are two ways to do this:
1.
With the boiler running, toggle the Mode key until you reach the (STBY) Standby mode.
2.
Depress and hold the Step key and then quickly depress and hold the Mode key for 2 – 5 seconds until the
display reads (CODE). Release the Mode key, then the Step key. The display should show a 'C' followed by a
random two digit number.
3.
Use the + or – keys to scroll to the number 05.
4.
Press the Store key momentarily and watch for the display to blink twice. CODE mode has now been activated.
5.
Toggle the Mode key until you reach (PARA) Parameter mode.
6.
Press the Step key to scroll to parameter 34.
7.
Press the + or - key to change the parameter setting to (
8.
Press the Store key momentarily and watch for the display to blink once. Parameter 34 has now been set to its
new value.
9.
Press the Reset key to restart the boiler.
To make this change using Gascom, select parameter "34 CH type (2nd digit)" and scroll to the "0-10V analog on AM4:
capacity" setting and click OK. Then write the parameter file to the MCBA by selecting the "Write to MCBA" option.
C. Reprogramming Parameter 34
Using the Boiler Keypad
--04
Using the Gascom PC Interface
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