nvent Raychem HWAT-ECO V4, Руководство пользователя

Страница: 8 / 140

8 | nVent.com
1. DESCRIPTION
1.1 Purpose
The nVent RAYCHEM HWAT-ECO control unit has been developed for
operation with the following 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
temperature. 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
voltage will set the desired maintain temperature.
• An alarm terminal makes errors remotely readable.
• HWAT-ECO controller can be delivered in prefabricated panels,
according to quantity of heating circuits (3,6,9 and 12)
1.2 Technical data
Switching capacity 20 A / 230 VAC
Use Only for HWAT-R/-M/-L heating cables
Off- power 2,5 VA max.
Power cable section entry 1,5 - 4 mm² for fixed wiring only
Auxiliary cable section entry up to 1,3 mm² (16 AWG)
Automatic switching Type 1 action, according to EN60730
Weight 880 g
Size 165 mm x 85 mm x 71 mm
Mounting options Wall mount with two screws or DIN rail.
Cable glands (entries) 2 x M20 and 1 x PG13.5 with 3 inputs for
external wires of 3-5 mm
Master/slave cable 2-wire twisted pair cable shielded
MONI-RS485, max. 1,3 mm² core and
insulation of 500V