Bedienungsanleitung De Dietrich Gas 310 ECO (Seite 51 von 76) (Englisch)

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De Dietrich Gas 310/610 ECO

12.3 Control strategy 

During normal operation, the boiler control can operate

according to a specific strategy. Most control

strategies are meant to keep the boiler burning for as

long as possible, regardless of changes in flow and

flow problems, etc.

The control strategies can be viewed in read-out mode

with the code .

 = modulate up (control below ionization limit)

 = modulate down (maximum temperature difference

between flow and return)

 = minimum output (return temperature higher than

flow temperature)

 = modulate down (flue gas temperature too high)

 = pump/boiler on (frost protection)

 = zero-flow protection 2 (minimum output)

 = zero-flow protection 1 (modulate down)

 = boiler block temperature too high (control stop)

12.4 Shut-off ()

12.4.1 Shut-off

During shut-off, the code window displays  and the

 window indicates the shut-off code.

 Important!! Shut-off is, a normal boiler

operating function and does not represent a boiler

failure. However, this may indicate a system problem

or an incorrect parameter setting.

12.4.2 Shut-off mode

In shut-off mode last shut-off and corresponding

operating codes can be reviewed. With PC (version

Recom PC and higher) or PDA the last six shut-off’s

can be reviewed.

During this particular mode both dots in the  window

flash.

The last shut-off and corresponding operating codes

and applicable temperatures are stored in the micro-

processor memory and can be read out in shut-off

mode as follows:

- Enter the service code   (see section 13.2).

- Press the  key until  appears in the code window

(flashing digit with flashing dot).

Select the required step with the  key.

Code



Description

  Shut-off code (see table 23)

 

operating code, at shut-off intervention (section 12.1)

 

Flow temperature, at shut-off intervention

 

Return temperature, at shut-off intervention

 

Flue gas temperature, at shut-off intervention





Boiler block temperature, at shut-off intervention





Time from shut-off intervention (PC software °only)

 

Ionization level (analog), at shut-off intervention

 

operating hours (hundred thousand, and ten thousand)

 

operating hours (thousand and hundreds)

 

operating hours (tens and units)

 

Fan speed at shut-off intervention (thousands and hundreds)

  Fan speed at shut-off intervention (tens and units)

Table 10 Shut-off in service level

The letters and numbers in the code window and the

 window are explained in appendix 16.2.

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