Technical information

20. Heating Control Options
The low voltage terminal strip can be used
to connect the following.
Hot water cylinder sensor.
External temperature sensor.
Room thermostat.
All of the above are available from
eco hometec
WARNING Low Voltage
Connections do not connect 240 volts to
the low voltage terminal strip.
Figure 18 Controls Terminal
The boiler control inputs are all low voltage
and must no be connected directly to the
mains.
The connection terminal block plug (fig. 18)
is located underneath the boiler see fig 19.
Figure 19 Connection Terminal Block
20.1 Connecting Room Thermostat
Strip approximately 5 mm of the insulation
from the connecting wires for the room
thermostat .
Insert the stripped ends of the connecting
wires in the connections (1) and (2) of the
terminal block (Fig. 18). Ensure that the
wires do not cause a short circuit.
Tighten the screws firmly in the terminal
block.
20.2 External temperature sensor.
External sensor (optional) available from
eco hometec.
This only requires an outside temperature
sensor. (
Mounted on North facing wall
)
The on board boiler weather compensating
controller is adjusted so the relationship
between the outside temperature and the
boilers flow temperature is sufficient to
maintain the building temperature.
As the outside air temperature rises and
falls a modulating control is achieved. Set
up this way the temperature for the house is
not controlled from one room, but on the
basis of the outside temperature.
Page 32
ECO HOMETEC
(
UK
)
LTD
.