Interface Selection ((); Dhw Cut-In Temperature (B); Fan Speed At Dhw Full Load (C); Forced Part Load Time After Start (Htg Only - G) - REMEHA Quinta 45 Technical Information

NOTE: Installations with low flow problems would benefit by reducing this set point to
force modulation to begin sooner and minimise boiler off time.

6.6.6 Interface selection (()

Adjustable 00 or 01, factory default 01
This value sets the control option.
01 for standard 0 -10 Volt external control or rematic
fitted). 00 for the modulating controller option.

6.6.7 DHW cut-in temperature (B)

Adjustable from 01 to 20 °C (8 steps, see table 09), factory default 5°C (05).
DHW demand:
With sensor:
- The DHW demand is satisfied when the DHW temperature equals the DHW set
point temp (parameter #) + 5°C.
- The DHW cut-in temperature sets the Τ below this end point for DHW demand.
Cut-in temperature = DHW set point (55) + 5 - parameter B (5)
i.e. 55 + 5 - 5 = 55°C. With thermostat or rematic
control determines the DHW demand.
Boiler modulation during continuing DHW demand
Sensor, thermostat and rematic
- The boiler will modulate when the flow temp equals the DHW set point + DHW
control stop set point (parameter I) i.e. 55+20 = 75. The boiler carries out a
control stop at a flow temp of 80°C (modulation point + 5°C), the display initally
shows 980, reducing to 975.
- The DHW cut-in temperature sets the ∆T below this control stop.
Cut-in temperature = DHW set point (55) + DHW control stop set point (parameter I)
+ 5 - parameter B (5)
i.e. 55 +20 + 5 - 5 = 75

6.6.8 Fan Speed at DHW full load (C)

Adjustable from 18 to 100% output (= 1100 (Quinta 45) / 1200 (Quinta 65) to 5200
rpm), factory default 52 (100%).
This value sets the maximum output of the boiler.
Parameters D - E - and F are factory set and must not be changed

6.6.9 Forced part load time after start (HTG only - G)

Adjustable from 00 - 15 min., factory default 03 (3 minutes).
This value sets the period of time the boiler will stay on part load at start up during
55979.indd 28 55979.indd 28
control: the thermostat or rematic
®
control:
®
28
Remeha
Quinta 45/65
series of compensators (if
®
®
2-4-2009 9:42:38 2-4-2009 9:42:38