Via Pianelli,38 - 28017 S.Maurizio d’Opaglio (NO) ITALY Tel. +39 0322 96217 - Fax. +39 0322 96546 - www.pettinaroli.com
STE0135 rev.00 05/10/2015
Wireless control unit 868MHz
U2W2E 230V 4/8/12 zones ETHERNET
The wireless control unit U2W2E - 230V - 868 MHz is smart
base station with no wires to manage room thermostats
(T2WB and/or T2WBD) and actuators (A542O2) in order to set
and keep the temperature in different rooms.
Thewireless control unit U2W2E - 230V - 868 MHz can deliver
the power to move actuators (A542O2) and it can install a
bidirectional communication with thermostats, throughout
the most recent 868 MHz radio technology.
This unit records and uses an important amount of measured
data to control singularly the room temperature, in order to
guarantee the maximum comfort.
The standard version is equipped with a technological
software, able to comply every management requirement with
current and next heating systems have; since this branch looks
constantly ahead, every software and settings update can be
done by inserting a MicroSD memory card. MicroSD slot is on
the bottom and the card is optional.
The wireless control unit U2W2E - 230V - 868 MHz has a RJ45
port and an integrated web server to manage and set remotely
via Internet with PC/smartphone/tablet.
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TECHNICAL FEATURES
Wireless communication between room thermostat
(T2WB or T2WBD) and the wireless control unit U2W2E -
230V)
Technology 868 MHz
Thermostat status indication
“Antifreeze” function
Heating and cooling systems adjustment function for single
rooms, managing up to 12 zones (according to version)
Management of maximum 18 actuators and 12 room
thermostats (according to the control unit version), a
pump/boiler, CO signal generator, a dry bulb humidity
sensor and external clock
System setting by MicroSD card
RJ45 port to manage and set via Internet with
PC/smartphone/tablet.
GENERAL INFORMATION
Name
U2W204Eto manage maximum 4 room thermostats (T2WB or
T2WBD) –4 zones
U2W208Eto manage maximum 8 room thermostats (T2WB or
T2WBD) –8 zones
U2W212Eto manage maximum 12 room thermostats (T2WB
or T2WBD) –12 zones
Each room thermostat can drive several zones.
Packaging content
1 x wireless control unit U2W2E - 230V 868 MHz
1 x instruction manual
1 x fixing metallic bar
Accessories (optional)
External antenna U2WA –it extends the radio signal range of
the control unit
Signal repeater U2WR –it increases the unit control radio
range
Humidity sensor U2DP or U2DPRS –it measures humidity and
dew point for heating/cooling floor applications
USE
The wireless control unit U2W2E - 230V is used in conditioning
systems for new buildings as well as renovations like houses,
offices, stores, etc…
Using the wireless control unit U2W2E - 230V the installation
time can be consistently reduced; that is a great benefit for
installers. The wireless control unit U2W2E - 230V is often
installed in manifold wall boxes. This product is developed for
the connection of 4-8-12 room thermostat (T2WB or T2WBD)
and 18 actuators (A542O2).
Wireless room thermostat installation (T2WB or T2WBD) is
very easy because no wiring is needed. The free tool
connection and the clear color codification allow to quickly link
wires (actuators, boiler, pump, etc.). All wires are placed in
specific guides, in order to have a clear and orderly
arrangement and a fast installation of the wireless control unit
U2W2E - 230V.
‘’Antifreeze’’ function
Every actuator outlet has protection function against freezing,
independently of the operation mode. As soon as the set
antifreeze temperature is overpassed (5 … 10°C), actuators
A542O2 of the corresponding heating zone are switched on,
until reaching the safety set temperature. “Antifreeze”
temperature can be set by the MicroSD card.
Pump protection function
The pump is periodically activated (default intervals are set) to
avoid any damage due to too long stops. During that time, the
LED pump is on.
Valves protection function
When valves are closed for long time (for example, out of the
heating season), they are cyclically open in every heated zone
to avoid mechanic blocks.
Monitoring the dew point
If the system has a dew point sensor (to purchase separately)
and humidity is measured, the valves of all circuits are closed
to avoid damages to surfaces because of the moisture. Dew
point sensor input is taken into account just in cooling mode.
Safety temperature limitation
If a temperature limiter (optional) is installed, when the critical
temperature (previously set) is overpassed, valves shut down
and they preserve fragile surface of floors.
