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3. INSTALLATION NOTES
The installation and, if necessary, the maintenance and the disassembling must be
carried out by a qualified electrical installer.
The installation must be compatible with local regulations.
check the maximum circuit length for your circuit breaker in the next table:
Maximum circuit length at 230 VAC and for 20°C start-up temperature
C-characteristic circuit breaker.
Multiple units on multiple power points can be used if longer heating cables are
required. We recommend to use compatible SBS panels to operate 3, 6, or 9
heating circuits.
Fig. 1
Circuit breaker
C 10A
C 13A
C 16A
C 20A
The Domotec DHB 370 C Therm-Control has a removable top lid. Both top and bottom of
the box have electronic parts and are connected to each other by an Ethernet connector
cable. the unit is delivered with top lid and back part dismantled.
Warning:
for over voltage protection (e.g. in case of thunderstorm) we recommend
the use of an external over voltage protection device.
Care and maintenance
Clean the Hwat-Eco with a soft damp cloth only, do not use any solvents. do not pour
water directly on the device. do not use a water hose or a high pressure cleaner.
3.1. Description
The DHB 370 C Therm-Control unit has been developed for operation with the
self-regulating heating cables Domotec DHB 200.
The hot water temperature maintenance system is a comfort system providing instant
hot water at the tap. A self-regulating heating cable is positioned on the pipe and
compensates for any temperature loss of the warm water.
The Therm-Control unit combines the following features:
•
The operating temperature of the heating cable can be limited to a desired
temperature. combined with the integrated "power off" timer function, this offers
important energy savings.
•
Energy can be saved upon activation of the "trace water heater" function and
installation of the boiler sensor. The maintain temperature of the heating cable will
automatically be lowered in case the water heater temperature is reduced,
preventing the heating cable from using too much energy for heating the water in
the pipes.
•
On big warm water systems it is sufficient to programme one Terh-Control unit
in SBS panel to manage multiple heating circuits. The Therm-Control controller can
be delivered in different prefabricated panels, depending on the quantity of heating
circuits (3, 6, 9).
•
An alarm terminal makes remote reading of errors possible.
•
A pipe sensor (to be ordered separately) can be installed as reference point to track
and monitor pipe temperature in a large hot water distribution network.
•
The unit can be pre-programmed in power-off mode by external power bank
(to be ordered separately) connected via A-A-USB cable and USB connection.
DHB 200
(light grey)
50 m
65 m
80 m
100 m
Domotec.ch | 45
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