nVent.com | 13
2.3.6 Network
See 5.5 Diagrams, diagram
B
. The HWAT-ECO unit can be used in a
system with up to 9 units. All units should be connected to each other on
the A and B inputs in parallel on terminal, see Fig. 4. This means that
several units will have two wires together in one hole. Twist the two
wires together before putting two wires into one hole. The wire should be
a twisted pair, shielded MONI-RS485-Wire and have a dielectric strength
of 500V. The total maximum length of this cable between all units is 100
m. Be careful not to mix A and B connections. The shield of the RS 485
cable: needs to be connected to the “–” terminal at the master and at the
slaves, (5.5.1 Fig B).
To connect a wire use a screwdriver to push down the orange tab on
the side of the terminal. Put the wire into the hole and release the
orange tab.
2.3.7 Building Management system (BMS)
See 5.5 Diagrams, diagram
B
. The BMS input of the HWAT-ECO is an
analogue 0 to 10 Volt input. If the unit is programmed to have a BMS
connection, this will override any time programming (see BMS page 18).
Note: It only can be received 0-10V input signals: it will be not sent
signals to the BMS.
Connect both wires of the 0-10 V output to the BMS terminal inside the
HWAT-ECO, see Fig. 4. Connect the ground wire to the “–” and the 0-10
V output to the “+” terminal. To connect a wire use a screwdriver to push
down the orange tab on the side of the terminal Put the wire into the
hole and release the orange tab. The wires used to connect BMS to the
HWAT-ECO should have a dielectric strength of 500 V. To connect a wire
use a screwdriver to push down the orange tab on the side of the terminal.
Note: Due to the limited amount of holes in the sealing ring of the cable
gland, the alarm wire and BMS wire can be combined in a 4 wire
shielded cable.
3. OPERATION
The HWAT-ECO version 4 has six buttons: Up/Down/Left/Right arrows,
Enter and Escape.
In the table on the next page is an overview of all menu items. Press any
button, except ESC, to enter the menu. When ESC is pressed the unit
shows the current requested water temperature. The unit will exit the
menu automatically after five minutes of key inactivity.
3.1 Quick install
When the unit is powered up for the first time, a quick setup must be
executed before the unit is ready to start. The quickstart helps to set
all important settings, the unit will start automatically when done.
Quickstart is sufficient for normal operations. More settings are
available in the Setup menu for special installations.
Содержание Raychem HWAT-ECO V4
Страница 2: ...2 nVent com 3 148 mm 1 2 A B C...
Страница 36: ......
Страница 70: ......
Страница 104: ......
Страница 129: ...nVent com 129 as oh evu potrub 2 50 54 SS okoln teplota 20 C as ud van v hodin ch as ud van v hodin ch Obr 12...
Страница 137: ...nVent com 137...
Страница 138: ......
Страница 139: ......