Bedienungsanleitung De Dietrich Gas 310 ECO (Seite 45 von 76) (Englisch)

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De Dietrich Gas 310/610 ECO

18. Check gas leakage control and minimum gas

pressure switch (if installed); Parameter



must be set to a value greater than or equal to

8, depending on the connected options (see

section 13.2.13). Then set the gas leakage

control pressure switch to a switch pressure

equal to 50% of the inlet pressure. Check that

the measured inlet pressure is not the (higher)

closing pressure.

19. Return the boiler to ‘user level’ by pressing the

reset key.

20. Heat the system to approximately 176

F [80

and switch off the boiler.

21. Bleed the system and check the water

pressure.

22. The boiler is now ready for operation.

23. Set the boiler controls to the required values.

24. Check all safety controls and ignition systems

for correct operation and safety shutdown

function.

25. Send completed commissioning reports to

DDR Americas Inc.





Note:

The Gas 310/610 ECO is supplied with a number of factory default settings that should be correct for most

installations. If there setting values are required: see sections 13.1 and 13.2.

The following operating situations are now possible:

26.

a. Modulating operation: The output of the boiler modulates on the basis of the flow temperature,

asked by the modulating control (see ‘Note’ in point 25c and section 8.6.2).

b. High/low operation: The boiler is operating at part load or full load, depending on the heat demand

(see section 8.6.5). on the safety boundaries the boiler is going to modulate.

c. On/off operation: the boiler modulates between minimal and maximum output on the basis of the

flow temperature pre-set on the boiler (see section 8.6.4).

d.  Important!! The boiler will initially operate in forces part load. The factory setting for forced

part load time is 30 seconds. This setting is correct if modulating controllers are used (see point

25a). A forced part load time of 3 minutes is recommended for on/off operation (setting mode,

parameter

, see section 13.2.3).

e. 0-10 V operation: Depending on the adjustments, two situations are possible (see section 8.6.3):

 The given off output varies linear with the sent signal, 2V = 20%, 10V = 100%

 The given off flow temperature varies linear with the sent signal (depending on parameter

 and

); example: 0V – 32°F [0°C], 10V = 212°F [100°C].

 The boiler modulates on the basis of the set flow temperature (setting range 68-194°F [20-90°C]

and a maximum

T protection.

Boiler gas ignition control operation and safety shutdown safety check procedure:

1. Shut off electrical power to boiler

2. Shut off main gas supply cocks valve to boiler

3. Restore power to boiler

4. Activate heat demand

5. Observe ignition

6. Observe safety shutdown condition, the boiler

shall shutdown then attempt to restart (max 5

automatic restarts, followed by lock-out code =

 and error on control, confirm shutdown

code is correct.

7. Reset the boiler control

8. Open main gas supply cocks valve

9. Observe ignition and note irregular ignition –

consult maintenance section of this manual

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