Connection To External Devices; Connection To Pump Or Valve; Smartrad Software Feature; Bedroom Mode - Dimplex SRX 080 EM Installation And Operating Instructions Manual

SRX 080EM, SRX 120EM, SRX 140EM, SRX 180EM
Please note the functions in the table above when op-
erating with programming cassette.
If the control conductor is not used, it must be properly
insulated.
ATTENTION!
If you switch over to controlled operation, the mains
voltage is on this conductor!
ATTENTION!
Do not ground the control conductor!
When taking out of service, e.g. for maintenance work,
ensure that both the mains supply and the control con-
ductor are disconnected from the power supply, be-
cause this may result in external voltage (via a timer
contact or pilot device with programming cassette).

7. Connection to External Devices

The EC SmartRad can be connected to a number of
external devices to improve energy efficient operation.
This is carried out by means of a relay on the PCB,
please refer to figure 7 for more detail. The basic oper-
ation of the relay is that when there is a demand - the
relay operates.
Connection to a building management system:
The relay can be configured as a „volt free contact"
which can be used to transmitt a signal to a suitable
control system „A" as shown in figure 7a.
7.1 Connection to a pump / valve:
The SmartRad can power an external pump and valve
via its own supply. A standard solenoid valve or spring
return valve „B" or a standard circulation pump „C" can
be wired in as shown in figure 7b.
NO = Normally open will operate the valve/pump.
N = Neutral for the valve/pump
ATTENTION!
The valve and pump should be rated for the correct
voltage!
ATTENTION!
The power requirement should not exceed 3 Amps at
250VAC!
7.2 Connection to a motorised valve:
The Smartrad can switch on and switch off a standard
motorised valve via its own supply.
NO = Normally open and will open the valve.
NC = Normally closed and will close the valve.
N = Neutral for the valve.
NOTE NOTE
Note the characteristics of the used actuator:
energized open or closed.
Connection for energized open figure 7b
EN-18
In version normally closed terminal „NO" must be con-
nected.
8. SmartRad Software Features
The EC SmartRad has a number of software features
to aid the comfort and usability of the appliance. These
different features can be accessed using the DIP
switches found on the main PCB and such features
should be selected during installation of the appliance.

8.1 Bedroom Mode

For ultra quiet operation a lower set of motor speeds
can be selected. This feature is very useful in low noise
areas such as bedrooms.
Switch ON DIP switch number 1 for this feature.
NOTE NOTE
Quiet operation reduces the performance of the
SmartRad and therefore the appliance should be
adequately sized for the room.

8.2 High Temperature Mode

For use with high temperature heat generators such as
oil or gas boilers. In this mode the lower water
temperature limit is increased to 45°C.
Switch ON DIP switch number 2 for this feature.

8.3 Setback Mode

For use with pilot wire applications. In this mode, when
a setback (reduced set point) signal is received, the
SmartRad will reduce the set point on a sliding scale.
This will retain a certain amount of heat in the room. If
this mode is OFF, a setback signal will revert to a „Frost
Protection" mode.
Normal comfort operation is not affected by this mode.

8.4 Operation Mode

Heating mode is only available on this appliance.
DIP switch number 4 should always be off.
8.5 Relay Mode
In this mode the relay is activated in accordance with
the operating conditions.
Switch ON DIP switch number 6 for this feature.

8.6 Keylock Operation

In this mode is useful for public areas such as schools
or offices and disables the controls on the appliance.
To activate press the
This will disable the
knob. To reactivate the appliance press the
for more than 15 seconds.

9. Final installation

Fit casing cover following completion of installation
work. To do this, screw in the four fixing screws on the
underside of the device, see fig. 2.
SRX_gb · 07/18/E
button for more than 15 sec.
, buttons and the thermostat
button
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