Navien LCB700-21RS Installation & Operation Manual page 58

11.4.3 Setting the Central Heating Operation
To set the boiler's central heating operation, press the Menu
button ( ), and then select "3. Central Htg Operation".
Rotate the Command dial (
or to increase/decrease setting values. Press the Command dial
( ) to select an item or to confirm after making changes.
Press the Back button (
menu.
Item
1. Central Htg ON/
OFF
1-1 CH Set Temp
2. OTC ON/OFF
2-1 K-Factor*
2-2 WWSD Temp
2-3 WWSD On Diff
3. CH Control
Method (System/
Regular Only)
* When the boiler is connected to an outdoor temperature sensor
(optional), functioning may be activated according to outdoor
temperature conditions and K-factor values using the parameters.
58 Operating the Boiler
) to switch between the list items
) to return to the previous screen or
Description
Enable or disable central heating
operation.
Setting range: Enable/Disable
Default: Enable
Set the central heating target
temperature (°C)
Setting range: 40-85°C
Default: 85°C
This option is available only when "1.
Central Htg ON/OFF" is set to "Enable".
Enable or disable the outdoor
temperature compensation control
option.
K-Factor for the central heating
Set the Warm Weather Shut-down
temperature.
Setting range: OFF, 10°C – 40°C
Default: OFF
Set the differential temperature
to deactivate the Warm Weather
Shutdown.
Setting range: 1°C – 20°C
Default: 3°C
Select the heating control type.
1: Supply Temperature
2: Return Temperature
Default: Supply Temperature
The graph shows how the set temperature is determined.
K-factor values can be set using the front panel or the Smart
Room Controller.
Outdoor Temperature Compensation
4 3.5 3
90
80
70
60
50 50
40
30
20
20
15 10 5
Outdoor Temperature (ºC)
If there is an input from the outdoor temperature sensor, OTC
(Outdoor Temperature Compensation) control will be enabled
automatically. Also, if there is no input from the outdoor
temperature sensor, OTC control will be disabled automatically.
OTC control can be enabled or disabled by the room thermostat
signals. If the room thermostat is on (short), and the set supply
water temperature calculated by the outdoor temperature
and the K-factor values is above 30°C, OTC control is enabled. If
the set supply water temperature is below 30°C, OTC control is
disabled.
11.4.4 Setting the DHW Operation
To set the boiler's indirect (System/Regular) or direct (Combi)
DHW operation, press the Menu button (
"4. DHW Operation".
2.5 2
1.5
1.2
0.6
0.2
0 -10 -15 -20 -25
-5
), and then select
1