Description; Technical Data - Raychem HWAT-ECO Handbuch

1. DESCRIPTION

1.1 Purpose
The HWAT-ECO control unit has been developed for operation with the fol-
lowing self-regulating heater range: HWAT-R, HWAT-M and HWAT-L. 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 HWAT-ECO control unit combines the following features:
• The operating temperature of the heater can be limited to a desired tem-
perature. Combined with the integrated power off timer function, this
offers important energy savings.
• Energy can be saved, upon activation of the "trace boiler" function and
installation of the boiler sensor. The maintain temperature of the heater
will automatically be lowered in case the boiler temperature is reduced,
preventing the heater from using too much energy for heating the boiler
water.
• On big warm water systems it is sufficient to program one HWAT-ECO
(= MASTER). The other ECOs (= SLAVES) will automatically copy the
MASTER settings when connected to it.
• HWAT-ECO can be connected to a BMS. The input of a remote DC volt-
age will set the desired maintain temperature.
• An alarm terminal makes errors remotely readable.

1.2 Technical data

Switching capacity
Use
Off- power
Power cable section entry
Auxiliary cable section entry
Automatic switching
Weight
Size
Mounting options
Cable glands (entries)
Master/slave cable
Alarm contacts
Protection level
8
20 A / 230 VAC
Only for HWAT-R/-M/-L heating cables
2,5 VA max.
2
1,5 - 4 mm for fixed wiring only
2
up to 1,3 mm (16 AWG)
Type 1 action, according to EN60730
880 g
165 mm x 85 mm x 71 mm
Wall mount with two screws or DIN rail.
2 x M20 and 1 x PG13.5 with 3 inputs
for external wires of 3-5mm
2-wire twisted pair, max. 1,3mm
and insulation of 500V
Max. 24VDC, or 24 VAC, 1A, SPST,
Voltage free
IP 54
2 core