STOKVIS ENERGY SYSTEMS ECONOFLAME R30, Установка, эксплуатация и обслуживание

Страница: 16 / 36

12
Doc653/30CV02A
Fig. 4 Connections of the R30
The appliance is suitable for a 230 V 50Hz power supply with live/neutral/earth. Other connect-
ing arrangements are only permissible if an isolating transformer is used. The appliance is phase
sensitive. The boiler can be switched on and off using the on/off switch on the control panel.
The installer should use a 2-pole main isolating switch with a contact opening of at least 3 mm in
the supply circuit to the boiler. With this, the entire boiler (including the boiler supply pump relay)
can be rendered volt free for maintenance work or in the case of failure.
In order to prevent faults due to electromagnetic fi elds, a screened cable should be used for the
bus connection and for all sensor and control signals between the boiler and all external connec-
tion units. The screening should be connected on both sides according to the EMC Directives.
Controls and options
The boilers are equipped with a modulating control system. The temperature can be controlled via
a 0-5 Vdc signal for example in response to external temperatures. If the voltage falls below 1 volt
the boiler reverts to the set point set on parameter P1. A hot water priority circuit also forms part
of the standard equipment, an additional sensor is required. Other options available on the boiler
can be supplied to extend this. The three following options are:
BME
A weather-dependent temperature controller with the following features:
- Programming of 3 heating periods with different room temperatures
- Adjustable night time boiler fl ow temperature reduction operation
- Choice between 2 weekly programmes
- Hot water priority circuit with 2 heat up periods
- Override for single hot water period during night time reduced fl ow temperature operation
- Optimum start time calculation
- Room temperature control with or without external temperature infl uence
- Option of internal (standard) or external room sensor (option)