Fan Speed At Part Load (Htg And Dhw - &) - REMEHA Quinta 30 Technical Information

6.6.4 Fan speed at part load (HTG and DHW - &)
Adjustable from 20% to 100% output (= 1200 to 5300 rpm), factory default 12 (20%
output). This value sets the minimum output of the boiler.
6.6.5 Starting point modulation (*)
Adjustable from 5 to 30°C, factory default 25°C.
This value sets the flow/return ∆T point at which the control modulation begins. If the
∆t continues to rise, at 40°C the boiler will be at minimum output (parameter &), at
30°C the boiler will shut off (code b#), see Par. 6.4).
The factory default should be correct for most installations. Changing this value should
only be carried out on advice from the service engineer.
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 and rematic series of compensators
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(if fitted).
00 for the Honeywell Chronotherm 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 ∆t 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: the thermostat or rematic control determines the
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DHW demand.
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