nvent Raychem HWAT-ECO V4, Руководство пользователя

Страница: 18 / 140

18 | nVent.com
3. Insulation
Set the insulation thickness with the arrow keys. The value can be
changed from 9 to 100 mm, but is limited by the pipe diameter. See
appendix 5.2, page 23 (‘Pipe size, Insulation and Temperature’) for more
information.
4. Power correction
Adjust the power setting for fine tuning the temperature. See
appendix 5.2, page 23 (‘Pipe size, Insulation and Temperature’) for
more information.
5. Lock
Lock On/Off can be selected using the up/down arrows and Enter to
confirm. If ‘On’ is selected a self-selected password must be entered
using the left/right and up/down arrow keys. Enter to confirm.
If lock is On, the Setup and timer menus are protected by the password.
After the password is entered the unit remains unlocked until five
minutes of key inactivity or the Lock ‘On’ is selected again.
6. BMS
The Building Management System option is activated using this menu.
When set to “Yes” the unit responds only to the voltage applied to the
BMS terminal. For voltages ≤ 4 VDC: heater is OFF. For voltages between
4,1 VDC and 6,4 VDC: maintain temperatures as indicated in Diagram
F, Chapter 5.5. For voltages > 6,4 VDC: 100% power to the heater for
legionella prevention (in case HWAT-R). See page 13 for installation.
If Trace Boiler is ON, it overrules the BMS temperature setting if
necessary.
7. Network Master
In large installations where more than 1 HWAT-ECOs are connected to
each other, one unit must be selected as Master. This unit should be
fully programmed and all slave units will use the Master settings. The
master unit sends commands to all slave units to switch them ON or
OFF. The timer program of the master unit will be used for all units in the
following way: Slave units on the same phase (max. three units) will have
a delayed ON and OFF. This way the start-up current of the cable will
never occur at the same moment for these units (A, B and C). Slave units
connected to a different phase will switch at the same time (1, 2 and 3).
After selecting Master: Yes the slave units will initialise and show:
“Slave: x y” x= phase number (1 to 3) y= slave identification (A, B and
C).The master unit is always 1 A, the slave units will get their number
and identification automatically. Always check afterwards if all units
have unique id-numbers, if not check the RS485 cables and repeat this
procedure.
8. Reinitialize
If “Yes” is selected the Quick install menu is activated and all settings are
returned to factory settings.