Danfoss ECL Comfort 300 User Manual page 4

Disposal instruction:
This product should be dismantled and its
components sorted, if possible, in various
groups before recycling or disposal.
Always follow the local disposal regulations.
Before you start
How to use this guide
This guide is divided into two parts:
• User's Guide: Yellow sections 1-7
• Installer's Guide: Grey sections 10 and onwards
F18
The application is very flexible. These are the basic principles:
The domestic hot water (DHW) storage tank is equipped with
three temperature sensors: S3, S4 and S5.
S3 is used for switch on and switch off of the electric heater in
connection with an extra energy source. The desired DHW storage
tank temperature sensor (S3) has two settings, one for reduced
temperature and one for comfort temperature which is controlled
according to the schedule in circuit I.
The DHW storage tank temperature sensor S4 decides the switch
on of the fuel cell energy supply and sensor S5 determines when
to switch it off.
S1 and S2 ensure that the temperature to and from the fuel cell
energy supply is kept under the acceptable values. If these are
exceeded, the fuel cell signal is overruled, FC and the alarm code
can be read.
A DHW tapping is detected by means of a flow switch, FS. The
DHW circulation pumps P2 and P3 stop, and the primary pump
P1 starts. When the DHW tapping stops, P1 will stop, and P2 and
P3 will be controlled according to the schedules in circuit I and II,
respectively. The readout of the DHW temperature sensor S6 can
be used when adjusting the DHW temperature.