REMEHA W40 Installation And Maintenance Instructions Manual page 33

10.3 Settings
10.3.1 General
In this paragraph a number of further setting options are
explained briefly. In most cases reference is merely
made to the diagram in par. 6.4.1.
10.3.2 Setting the required flow temperature
Setting mode, step 1.
Preset 80˚C.
Change setting: see para. 6.4.1 and 6.4.10.
10.3.3 Setting the required flow temperature when
using an outdoor sensor
Setting mode, step 1.
If an outdoor temperature sensor is connected, you
should input the peak value of the stoking line here, i.e.
the required flow temperature at an outdoor temperature
of -10°C. The base value of the stoking line is a fixed
value of 25°C flow temperature at 20°C outdoor temper-
ature. See the graph below.
outdoor temperature ˚C
Fig. 22 Stoking line graph
If under certain circumstances the flow temperature
according to this stoking line is too low (e.g. restoking
following nighttime shutdown), a so-called "booster
function" ensures that the flow temperature is raised by
10°C if heat demand (from the room thermostat)
continues for longer than 10 minutes. This is repeated
every 10 minutes until the room thermostat switches off
(or a flow temperature of 80°C is achieved).
Once the room thermostat has switched, the required
flow temperature will once again fall by 1°C per minute
until the stoking line is regained.
10.3.4 Changing the cut-in temperature differential
Setting mode, step n.
Preset 10˚C.
Change setting: see para. 6.4.1 and 6.4.3.
10.3.5 Setting the pump control
Setting mode, step 2.
Preset 5 minutes.
Change setting: see para. 6.4.1 and 6.4.10.
10.3.6 Setting the burner control
Setting mode, step A.
The basic setting is modulating burner control.
To alter burner control, you should carry out the follow-
ing actions.
- Press the 'mode' key to call up setting mode. The dot
in the 'code' window will light up continuously.
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- Press the 'step' key until the letter A. appears in the
'code' window. This is the setting for appliance control.
The temperature window indicates 1 1 . This is modu-
lating control, warm water supply 'on'.
-Change the setting using the ' ' and ' '-keys:
Code Description ('X' = don't care)
A. 1 X central heating modulating
2 X central heating high/low ext. input
X 0 central heating off, D.H.W. off
X 1 central heating on, D.H.W. on
X 2 central heating on, D.H.W. off
X 3 central heating off, D.H.W. on
- Store the new setting in the memory, by pressing the
'store' key. The temperature window will flash as a sign
that the value has been stored.
- Press the 'reset' key once to return to operating mode.
The burner control has now been set to high/low control.
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