Installation Notes; Use Of The Manual; Technical Data - nVent RAYCHEM HWAT-ECO-GF Mode D'emploi

3. INSTALLATION NOTES

3.1. Use of the Manual

This manual covers the installation and operation of the nVent RAYCHEM
HWAT-ECO-GF controller and must be used with the following additional documents:
HWAT System Product and Selection Design Guide (H57538) HWAT System Installa-
tion and Operation Manual (H57548).
IMPORTANT: For the nVent warranty and agency approvals to apply, the instruc tions
included in this manual and product packages must be followed.
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-GF 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.
Pre-Installation testing
Prior to installing the HWAT-ECO-GF controller, perform the insulation resistance
(Megger) test and circuit length verification (Capacitance) test on the heating cable
as detailed in the HWAT System Installation and Operation Manual (H57548).
Installing the controller
Install the controller in an indoor, dry, clean, acces sible location. If using the optional
pipe temperature sensor, make sure you install the controller within 328 ft (100 m) of
where you want to monitor the pipe temperature.
Opening the controller
WARNING: To prevent shock, always switch off the power supply (circuit breaker)
before opening the controller.
The HWAT-ECO-GF has a removable front cover. Both the cover and the box have
electronic parts and are connected to each other by an Ethernet cable. First unscrew
the four screws in the cover.
3.2. Description
The HWAT-ECO-GF control unit has been developed for operation with the
self-regulating heating cables: nVent RAYCHEM HWAT-R2.
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-GF control 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 boiler" function and installation
of the boiler sensor. The maintain temperature of the heating cable will
automatically be lowered in case the boiler temperature is reduced, preventing
the heating cable from using too much energy for heating the water in the pipes.
• On larger and more complex domestic hot water systems, the HWAT-ECO-GF
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 networks.
• 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.
• Built-in ground fault protection

3.3. Technical data

Product specification
Electrical properties
Supply voltage
Internal power consumption
10 | nVent.com
Only for HWAT-R2 heating cables
208/240/277 VAC , 50/60 Hz
2.5 W max