Imit TA3 Manual de usuario
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TA3 – TA3 A – TA3 B – TA3 C
COD. 546070
COD. 546030
COD. 546010
COD. 546230
PRODUCT DESCRIPTION
This is an easy-to-use MECHANICAL THERMOSTAT. It allows an accurate room temperature adjustment in the
hosting room, thus meeting any users’ needs as far as room comfort.
CONFORMITY TO THE STANDARDS
This product complies with:
EN 60730-1 and subsequen revisions
EN 60730-2-9
CONFORMITY TO THE GUIDELINES
This product complies with:
LVD 2014/35/EU
Class ErP I (+1%) – EU 811/2013
The product model and code (6 digits) are printed on the sticker on the outside or the inside of the battery
compartment cover. The manual may not be available in the selected language.
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Technical specications
Maximum capacity of the contacts 16(2,5)A/250V~
Type of action 1B
Temperature regulation range 5°÷30°C
Temperature differential 0,4K÷0,8K
Output switching contacts
Degree of protection IP 20
Insulation class Double insulation
Pollution degree 2
Storage temperature 0°÷50°C
Rated impulse withstand voltage 4kV
Installation to the wall
Temperature rate of change 1K/15min.
It is recommended to install the appliance strictly in compliance with all safety and law provisions in
force.
Before connecting the thermostat, make sure that the supply voltage of the UNIT TO BE
CONTROLLED (boiler, pump, air-conditioning system, etc.) is NOT CONNECTED and that it matches
the indication given inside the appliance (250V~ max). (g.5)
In case of repeated malfunctioning, please call our Technical Service. Do not tamper for any reason
with any part of the thermostat.
FIG. 5
THERMOSTAT CONTROL KEYS
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1 = Temperature setting knob (g. 1)
2 = Warning lamp (TA3-A, TA3-B, TA3-C)
3 = ON/OFF switch (TA3-B) or SUMMER/WINTER switch (TA3-C)
FIG. 1
OPTIONAL ACCESSORIES
Sub-base tting = cod. 004095 (g.3)
FIG. 3
Special tting for temperature range restrictions or for the temperature lock at a pre-set value. = cod. 000071
(g.4)
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FIG. 4
INSTALLATION
PLACEMENT OF THE THERMOSTAT
FIG. 6
Install the thermostat away from heat sources (radiators, sunrays, and kitchens) and away from
doors/windows, at approx. 1,5 m height from the oor. (g.6)
INSTALLATION AND WIRING CONNECTIONS
A) In case the thermostat shall be installed either in a round built-in box (having distance between centres
equal to 60mm), or on an uneven wall surface or in other particular locations, it is recommended to use a sub-
base tting (see paragraph “Optional Accessories ”). Fix the tting to the wall through two holes other than the
ones marked as B-B, which are exclusively provided for the thermostat installation. (g.7)
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FIG. 7
B) Remove the front cover from the thermostat base by releasing the provided clip (g.8), then x it to the wall
(or to the sub-base tting) through the provided holes (g.9) and tighten it by means of suitable screws having
max of 3,5 mm.
FIG. 8
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FIG. 9
C) Thread the power supply wires through the slot in the base and connect them to the terminals as per the
wiring diagram sketched inside the appliance. Snap the front cover back. (g.10)
FIG. 10
DESCRIPTION OF CONTROLS AND OPERATION
TURNING THE THERMOSTAT ON AND OFF
On TA3-B, put the switch onto the “ON” position to start the equipment or onto the “OFF” to turn it off. (g.12)
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FIG. 12
TEMPERATURE SETTING
When the appliance is connected and the electric power is switched on, set the desired room temperature
simply by turning the temperature-adjusting knob to the corresponding value on the graduated scale. (g.11)
FIG. 11
TEMPERATURE RANGE
RESTRICTION AND TEMPERATURE LOCK
WARNING:
THE TEMPERATURE RANGE RESTRICTION AND TEMPERATURE LOCK OPERATIONS MUST BE CARRIED
OUT BY QUALIFIED PERSONNEL ONLY.
TEMPERATURE RANGE RESTRICTION
Remove the front cover from the thermostat base by releasing the provided clip. (g.8)
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FIG. 8
Insert the provided tting (see paragraph “Optional Accessories ”) in the knob at the desired limit points (min.
and max.) according to the corresponding values marked on the knob body. Make sure that the metal retainer
remains in its correct position between the min. and max. limit points. (g.14); Snap the front cover back.
FIG. 14
TEMPERATURE LOCK
Position the knob to correspond with the desired temperature value, then separate the base from the cover by
pressing the appropriate retaining tooth. (g.8) Insert the two special accessories (see chapter “Accessories
upon Request”) on the sides of the metal stop in order to prevent the handle from moving (g.15); put the lid
back on the product.
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FIG. 15
SUMMER/WINTER SWITCH
On TA3-C, put the switch onto the position to set up the “summer” operation mode (air conditioning
system), or onto the “ ” position to set up the “winter” operation mode (heating system). (g.13 ” position to
set up the “winter” operation mode (heating system). (g.13)
FIG. 13
PROBLEM SOLVING
Problem
The system does not start
Possible cause
Wrong wiring
The set room temperaturehas been already reached
Switch on OFF position
Wrong setting ofsummer/winter switch
Solution
Check if the wiring connections to the thermostat terminals were carried out as per wiring diagram
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Increase or reduce the set temperature value according to the system application
(heating/air-conditioning system)
Put switch onto ON position
Make sure the switch is on position (heating system) or o position (air conditioning system)
Problem
The ambienttemperature doesnot correspond tothe temperatureset on thethermostat
Possible cause
Incorrect positioning of the thermostat within the room
Air draughts coming from the electrical wires conduit
Solution
Follow the instructions of paragraph “Placement of the thermostat”
Seal the conduit to prevent warm or cold air draughts
IMIT CONTROL SYSTEM s.r.l.
Via Varallo Pombia,19
Castelletto Sopra Ticino (NO)
Tel (+39)0331941600
Fax (+39)0331973100
P.IVA IT02223920063
www.imit.it - [email protected]
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