ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...
ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...
ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...
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<strong>Installation</strong> <strong>Guide</strong> <strong>ECL</strong> <strong>Comfort</strong> <strong>210</strong> / <strong>310</strong>, application <strong>A275</strong> / <strong>A375</strong><br />
Protection 11047<br />
Circuit Setting range Factory setting<br />
1 OFF / ON OFF<br />
Choose whether the circulation pump for the boiler circuit (P1) should be<br />
stopped to prevent condensation in the boiler during the heating-up period.<br />
OFF: The circulation pump is controlled according to<br />
demand.<br />
The circulation pump is switched ON when:<br />
· the desired flow (boiler) temperature is higher<br />
than the set value in ID no. 11078 ‘P heat T’ or<br />
· the outdoor temperature is lower than the set<br />
value in ID no. 11077 ‘P frost T’.<br />
ON: The circulation pump is switched OFF until the desired<br />
min. flow (boiler) temperature is reached.<br />
The min. flow (boiler) temperature is set in ID no.<br />
11177 ‘Temp. min.’.<br />
Typically, the heating-up period of an oil fired boiler must be as short<br />
as possible. This will reduce condensation in the furnace.<br />
To obtain the best conditions for the boiler, the circulation pump (P1)<br />
can be switched OFF during the heating-up period.<br />
The circulation pump will be switched ON when the actual flow<br />
(boiler) temperature is higher than the min. desired flow (boiler)<br />
temperature set in ID no. 11177 ‘Temp. min.’ + half the boiler<br />
temperature difference in ID no. 11046 ‘Difference’.<br />
The circulation pump will be switched OFF again if the actual flow<br />
(boiler) temperature is lower than the min. desired flow (boiler)<br />
temperature set in ID no. 11177 ‘Temp. min.’.<br />
Example:<br />
‘Temp. min.’= 45 °C and ‘Difference’ = 8 K<br />
The circulation pump will be switched ON when the actual flow<br />
(boiler) temperature is higher than 45 + 0.5 x 8 = 49 °C.<br />
The circulation pump will be switched OFF when the flow (boiler)<br />
temperature gets lower than 45 °C.<br />
Band limit (<strong>A375</strong> applications) 11048<br />
Circuit Setting range Factory setting<br />
1 5 ... 80 K 20 K<br />
The band limit determines when burners are cut-in and cut-out if there is<br />
a temperature difference between the desired and the actual flow (boiler)<br />
temperature.<br />
If the difference is more than the set value, the setting in ID 11074 ‘Reaction,<br />
o. band’ determines the control of burner steps. If the difference is less than<br />
the set value, the setting in ID no. 11075 ‘Reaction in band’ determines the<br />
control of burner steps.<br />
5 ... 80 K: Set the band limit.<br />
Flow (boiler) temp.<br />
Temp.<br />
0.5 x ‘Difference’<br />
Boiler temperature<br />
Time<br />
Band limit<br />
Desired boiler / flow<br />
temp.<br />
Band limit<br />
116 DEN-SMT/DK VI.GU.L1.02 <strong>Danfoss</strong> District Energy<br />
Time
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