Boiler Temperature Control; High Limit Temperature Protection; Low-Water Protection (Flow And Content); External Connections - REMEHA Quinta 45 Technical Information

Remeha
Quinta 45/65
Fig. 13 Gasmodul control box
00W4H7900018

8.2.4 Boiler temperature control

The Remeha Quinta 45 and 65 has electronic temperature control with flow and return
temperature sensors. The flow temperature can be adjusted between 20 and 90°C.

8.2.5 High limit temperature protection

The high limit temperature protection device switches off and locks out the boiler when
the flow temperature exceeds the high limit set point (adjustable). When the fault is
corrected, the boiler can be restarted by using the 'reset'-key on the control panel.

8.2.6 Low-water protection (flow and content)

The Remeha Quinta 45 and 65 is supplied with a low-water protection on the basis of
temperature measurement, see Fig. 22 Boiler sensor resistance/temp graph. By modu-
lating back at the moment that the water flow threatens to fall too low, the boiler is kept
operating for as long as possible. In the event of low flow (F/R ∆t = 45°C), the boiler
will shut off and not lockout (ref. Par. 6.4).
If the boiler is fired dry, it will go to high temperature lock out, failure code 1*

8.3 External connections

All external connections (except rematic
® 2945 C3) are made on the 24 way terminal
strip, located in the instrument box at the bottom of the boiler, accessed by loosening
the two screws, see fig. 14 and 15.
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