COMPENSATING OPTIMISER FOR 1, 2-STAGE
MODULATING BURNERS WITH 0…10 V– INPUT

XCC 638

 clicca sull'immagine per ingrandire

 Path - First page - Products - Automation boiler & burners - XCC 638

  • TELEMANAGEMENT : Enabled using ACB 400 accessory.

APPLICATION

Designed for the compensated control of winter heating in centralised sites, with power supply directly from the boiler (without mixing valve), whether condensation or not. 
The burner with 1, 2 stages or modulating can be controlled by switches or by means of the 0…10 V input.
By equipping all the boilers on site with XCC 638, with a single boiler provided with XTC 638, you can set up a sophisticated sequence among the various 1, 2-stage or MODULATING BURNERS and thereby achieve the maximum SEASONAL OUTPUT.
The whole system has been especially designed also for CONDENSATION BOILERS..

  • Communication with other controllers via serial C-Ring protocol.

Essential sensors:

  • 1 boiler sensor, 1 outside sensor

Optional accessories:

  • 1 anticondensing sensor, 1 room or flue gases sensor, 1 storage tank sensor

FEATURES

  • Power supply: 230 V~; 

  • Consumption: 5 VA; 

  • Modular enclosure DIN 105 x 115; 

  • Protection: IP 40. 

  • Digital programming by means of 4 operating keys and alphanumeric display.

  • Control of boiler temperature at fixed point or variable in relation to outside temperature or to the demand of the various users (if the controllers are COSTER).

  • Control of 1, 2-stage or modulating burner.

  • Option of sequence under control of XTC 638.

  • Compensated control of boiler temperature
    – all the optimum starts and stops of heating and of the site circulation pump
    – complete range of choices for room temperature,
    – 24hour and 7day clock (four 24hour programs, one 7day program)

  • Control of temperature of DHW storage tank (one for each site)
    – own independent clock; 24hour, 7day (four 24hour programs, one 7day program).
    – priority and antibacterial functions

  • Automatic switching GMT/BST.

  • Periodic operation of summer plant exercise of valves and pumps.

  • Metering of degree-days, of burner operating hours and or number of starts.

  • Alarms for short and open sensor circuits and for abnormal operation of site and devices.

  • C-Ring connection for local transmission of data to other COSTER controllers.

  • Optional C-Bus connection for transmitting data to local PCs or remote Telemanagement PC.

    XCC 638 is already provided with 0…10 V output adaptable to any generator provided with this input.

Code  

Description

Data sheet
XCC 638  

Optimising compensator for modulating burners

A 620

DETECTORS AND ACCESSORIES

Code   Description Application range

Sensing element

 Data sheet
ACB 400   Plug-in for communicating via . - - T 433
SAE 001   Outside temperature sensor. -40 ... 40 °C NTC 1 kΩ N 120
SIH 010   Immersion temperature sensor. 0 ... 99 °C NTC 10 kΩ N 140
SCH 010   Surface temperature sensor   NTC 10 kΩ N 130
SAB 010   Room temperature sensor 0 ... 40 °C NTC 10 kΩ N 111
STF 001   Flue gases temperature sensor. 0 ... 500 °C Pt 1 kΩ N 165