Honeywell DTC 100/4 TD User Manual page 7

THERMOSTAT REGULATION
The following settings are performed with keys situated under display:
- Maximum temperature in hot water tank.
- Difference of collector circuit.
- Difference of after-heating circuit (boiler).
- Setting two working regimes - C.n.b and C.d.t.
- Collector circuit operation switching off with automatic operation of after-heating
circuit. (Used when liquid is discharged from collector system.)
- After-heating circuit operation switching off with automatic operation of collector
circuit. (Used if after-heating circuit is not required.)
Simultaneously press once central and right keys under the display to enter in
set-up meni
1. Temperature setting in hot water tank (10-90°C)
On the display appear "b" and current pre-set temperature of hot water tank (in our case
55°C). With keys T2 in T3 set required temperature.
Recommendation:
Set the temperature in hot water tank to least 10° lower value as boiler
temperature in boiler is set.
Warning:
If you additionally heat water with heat pump, you must limit the water
temperature to 55°C max. and connect output from terminal 12 and 14
through temperature safety fuse in hot water tank or through additional safety
thermostat.
When you set the required temperature, press key T1 to pass over the next setting.
2. Setting of difference of collector circuit (0-15)
On the display appear "C" and current difference of collector circuit (factory set to 5K).
With keys T2 in T3 set required difference.
The difference defines the value for which source temperature should
exceed the temperature of the user (collectors or boiler: hot water tank) that
the pump is activated. It is generally 5K for collectors and 8K for boiler
(factory setting). Of course it depends on lengths and isolation of
pipelines.
If you decrease the difference to "0", collector circuit is switched off.
When you set the required temperature, press key T1 to pass over the next setting.
3. Setting of difference of after-heating circuit (0-15)
On the display appear "P" and current difference of collector circuit (factory
set to 8K). With keys T2 in T3 set required difference.
If you decrease the difference to "0", after-heating circuit is switched off.
When you set the required temperature, press key T1 to pass over the next
setting.
DTC 100/4 TD
7