Giacomini R473 Series User Manual

3
0813EN November 2016
Thermo-elecTric acTuaTors
Thermo-elecTric acTuaTors Normally closed
r473, r473m
Electrical data
Product code Absorbed power Voltage Max. peak current (*)
Current absorbed
after 12 mins. (*)
Resistance (*) Power wire section Micro switch
R473X221
2,5 W 230 V 50Hz ≤ 0,25 A ≤ 0,015 A 6300 Ω ± 1800 Ω 2 x 0,50 mm
2
-
R473X222 2,5 W 24 V 50 Hz ≤ 0,35 A ≤ 0,125 A 115 Ω ± 28,75 Ω 2 x 0,50 mm
2
-
R473MX221
2,5 W 230 V 50Hz ≤ 0,25 A ≤ 0,015 A
6300 Ω ± 1800 Ω 4 x 0,50 mm
2
5 A 125 Vac
3 A 250 Vac
R473MX222 2,5 W 24 V 50 Hz ≤ 0,35 A ≤ 0,125 A 115 Ω ± 28,75 Ω 4 x 0,50 mm
2
5 A 125 Vac
3 A 250 Vac
(*) Values read at room temperature
Electrical connections
Avvertenza.
On the supply circuit, a fuse or a protection device external to the device, has to be installed to intervene in case of fault/short circuit conditions.
R473 thermo-electric actuators provide for various connection options able to satisfy a wide range of installation needs. The most frequent cases require simple
direct connections to ambient thermostats or interposition of relays to control the circulators or zone valves.
Termostati ambiente / Room thermostats
NC C NO NC C NO NC C NO
L1
L2
N2
N1
N1N1N1
R2 R3
R1
R2
R3
R1
R473X221
230 Vac
2,5W
R473X222
24 Vac
2,5W
R473M thermo-electric actuators equipped with a stroke-end micro switch enable to easily activate circulators or zone valves. They are generally connected to
ambient thermostats taking into consideration that the R473M is closed when there is no voltage (while the micro switch is electrically open in such status).
To control signicant power loads, we recommend installing a relay to prevent overloading of the actuator micro switches.
L1
L2
N1
N2
N3
L3
R1
R1
R473MX221
230 Vac
MAX 5A 125Vac
MAX 3A 250Vac
MAX 3A 250Vac
2,5W
R473MX222
24 Vac
MAX 5A 125Vac
2,5W
Termostati ambiente / Room thermostats
NC C NO NC C NO NC C NO
Product specications
R473
Thermo-electric actuator normally closed for thermostatizable valves and/or manifolds. 2-conductors wire, length 1 m. Protection class IP40. Rapid connection.
Position mechanic indicator. Room temperature range -5÷50 °C. Available with 230 V or 24 V power. Complies with Directives EMC and B.T.
R473M
Thermo-electric actuator normally closed for thermostatizable valves and/or manifolds. 4-conductors wire, length 1 m. Protection class IP40. Rapid connection.
Position mechanic indicator. Room temperature range -5÷50 °C. Available with 230 V or 24 V power. Complies with Directives EMC and B.T.

Giacomini R473 Series Specifications

General

Brand	Giacomini
Model	R473 Series
Category	Controller
Language	English