Flow Temperature Set Point During Forced Part Load; High Limit Thermostat; Fan Speed At Full Load Htg; Fan Speed At Part Load - REMEHA Gas 110 Eco 115 Installation And Service Manual

4.6.1

Flow temperature set point during forced part load ( )

Adjustable from 20 to 90 °C.
4.6.2

High limit thermostat ( )

Adjustable from 90 to 110 °C (
This value sets the high limit temperature at which the boiler will shut
down in a lock out condition requiring manual intervention.
4.6.3

Fan speed at full load HTG ( )

Adjustable from 18% to 100% output (= approx. 1300 to 7000 rpm).
This value sets the maximum output of the boiler.
4.6.4 Fan speed at part load (HTG and DHW -
Adjustable from 18% to 100% output (= approx. 1300 to 7000 rpm).
This value sets the minimum output of the boiler.
4.6.5

Starting point modulation ( )

Adjustable from 5 to 30 °C.
This value sets the flow/return
modulation begins. If the ∆T
be at minimum output (parameter
(code )
See chapter 4.4.
4.6.6

Interface selection ( )

Adjustable or .
This value sets the control option.
4.6.7

DHW cut-in temperature ( )

Adjustable from to
See chapter 4.6. Table
DHW demand
With sensor:
- The DHW demand is satisfied when the DHW temperature equals
the DHW set point temp (parameter
- The DHW cut-in temperature sets the
DHW demand.
Cut-in temperature =
DHW set point (55) + 5 - parameter
With thermostat:
- The thermostat determines the DHW demand.
Boiler modulation during continuing DHW demand
Sensor and thermostat:
- The boiler will modulate when the flow temp equals the DHW set
point + DHW control stop set point (parameter
75.
22
).
point at which the control
∆T
continues to rise, at 40 °C the boiler will
), at 45 °C the boiler will shut off
°C (8 steps)
) + 5 °C.
below this end point for
∆T
(5), i.e. 55 + 5 - 5 = 55 °C.
) i.e. 55 + 20 =
This value will prevent the flow temperature exceeding this
temperature during the part load time.
* NOTE: this parameter will have an effect on the minimum flow rate
requirement
See chapter 5.3.
)
The factory default should be correct for most installations. Changing
this value should only be carried out on advice from the service
engineer. Don't change the factory default for the minimum output
(parameter ), in cases of minimal flow.
NOTE: Installations with low flow problems would benefit by reducing
this set point to force modulation to begin sooner and minimise boiler
off time.
for standard 0 -10 V external control.
for Open Therm option.
- The boiler carries out a control stop at a flow temp of 80 °C
(modulation point + 5 °C), the display initially shows
reducing to
- The DHW cut-in temperature sets the below this control stop.
Cut-in temperature =
DHW set point (55) + DHW control stop set point (parameter
5 - parameter
Gas 110 Eco 115 / 65
.
(5), i.e. 55 + 20 + 5 - 5 = 75
26/01/2009 - 300014883-001-F
,
) +