Network; Building Management System (Bms); Operation; Quick Install - Raychem HWAT-ECO Bedienungsanleitung

2.3.6 Network

See 5.5 Diagrams, diagram
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 con-
nected 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
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 auto-
matically 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.
B
. The HWAT-ECO unit can be used in a system
B
. The BMS input of the HWAT-ECO is an
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