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The LAIA Heating Unit selected will give you the
services of Heating and instant generation of Hot
Water for household use.
These instructions give you the main
characteristics of the Heating Unit as well as the
steps required for its correct operation and
maintenance.
OurClients’TechnicalServiceisatyourdisposition
for helping to solve any problems that may arise.
Main characteristics
ModelOperating power
kcal/hkW
LAIA GTI-R-T25.00029,07
Maximum operating temperature: 100°C
Maximum pressure (heating circuit): 3 bar
Maximum pressure (hot water circuit): 7 bar
Continuous production: 13.9 I/min at ∆t=30°C
Operation
Checks and steps to follow during service to the
HeatingUnit,andatthebeginningandendofevery
heating season.
Operations prior to first use
-Check that the Out and Back cocks, if any, are
open.
-Open the door of the boiler.
-Check that the unit is full of water and that the
fixed hand of the thermohydrometer has been
placedinthepositioncorrespondingtotheheight
of the unit.
1 bar = 10m
-Purgetheairfromtheunitandtheemitters,using
the purge traps.
-Fill up with water, if necessary, until the mobile
hand of the thermohydrometer is slightly higher
than the fixed one.
First use
*LAIA Heating Units incorporate a burner which
ignites for the first time some 6 minutes after
the general switch (1) is flicked. Subsequently,
ignition is almost instant. Figure 1.
*With regard to the operation of the programme
clock (2) of LAIA GTI-R Heating Units, consult
the Instructions provided.
-Adjusttheboiler thermostat (3) to between 50°C
and 90°C. Move the dial of the ambient
thermostat, if any, to the position corresponding
to the ambient temperature required.
-Adjust the boiler thermostat for hot tap water (4)
to between 40°C (summer) and 60°C (winter).
-Flickthe general switch (1).The pilot (5) will light
up.
-Use the switch (6) to select ”heating/hot water”
or ”hot water”.
Heating/Hot Water
LAIA GTI and GTI-R with switch at (6) / .
LAIA GTI-T with Teletherm / functions
activated. (See ”telephone module”.)
A-WITHOUT EXTRACTION OF HOT WATER
-The burner operates under the control of
the boiler potentiometer (3). See figure 1.
-The circulator operates continuously,
unless the ambient thermostat overrides it.
B-WITH EXTRACTION OF HOT WATER
-The boiler goes to the maintenance
temperature (about 80°C).
-The circulator works under the control of
the electronic circuit, in function of the flow
and the temperature selected for this
service.
Hot Water
LAIA GTI and GTI-R with switch (6) at . LAIA
GTI-T with Teletherm function activated. (See
”telephone module”.)
A-WITHOUT EXTRACTION OF HOT WATER
-The boiler remains at the maintenance
temperature (about 80°C).
-The circulator does not work.
B-WITH EXTRACTION OF HOT WATER
-The boiler continues at the maintenance
temperature.
-The circulator operates under the control
of the electronic circuit, in function of the
flow and the temperature selected for this
service.
In any event, the safety thermostat (7) will
disconnect the burner whenever the
temperature of the water in the boiler
becomes too high.
To reset it, press the button under the
protective cover.
Anyblockageof the burner will causethe pilot
(8) to light up.
-Check that the circulator is operating
correctly and unblock it, it necessary, by
removing the twist control cap, pressing on
the groove of the shaft and turning at the
same time with a screwdriver.
-Check the performance of the burner,
following the specifications of the
Instructions manual.
-Purge and check that all emitters reach the
temperature selected on the boiler
potentiometer (3) when in operating
conditions.
-Flick the general switch (1) to ”Off”.
LAIA GTI-T Telephone module
This module is constituted by two elements: a
portable emitter control (9) which incorporates
a service switch, keypad and loudspeaker, and
alsoareceiver(10)forconnectiontothetelephone
line, mounted at the control panel (See Figure 1).
Remote control
Themaximum duration of the telephonecall is four
minutes; once this time has elapsed,
communication is cut off. If the receiver does not
receiveanytonefromtheemitterforthirtyseconds,
communication will be cut off.
-Enter the number where the receiving device is
installed.Atthe eighth tone, the receiver willemit
thefollowingmessage: ”Roca Heating. Enter the
code”. This message can be heard through the
earpiece of the phone.
-Bring the emitter up close to the microphone in
the speaker and key in the four digits of the
access code. The initial access code is ”0000”.
a)If the code is not correct, the receiver issues
themessage, ”Code incorrect. Enterthe code”.
After five inaccurate attempts, the line is cut
off. If less than four digits are entered, the line
is cut off after thirty seconds. If more than four
are entered, depending on which ones, some
special function may be started (if the first four
correspond to the correct code and the
remaining ones to the function).
b)If the code is correct, the receiver issues the
message, ”Code correct. Select function”, and
awaits reception of one of the following digits:
1, 2, (depending on the function required).
Change of code
-Press the and 1 keys, in this order. The
receiver says, ”Enter new code”.
-Enter the four digits of the new code ( and #
maynotbe included), followed by *.The receiver
repeats, ”Enter new code”.
-Enter the four digits of the code again.
a)If the two series of digits were not the same,
the receiver gives the message, ”Enter the
code”andthesteps for changing the code must
be repeated from the beginning.
b)If the two series of digits were the same, the
receiver says, ”Code correct. Select function”,
and awaits reception of one of the following
digits: 1, 2, (depending on the function
required).
Consultation or change of status of
the ”Heating” service
-By pressing key 1 of the emitter, you will be
informed of the status of the heating service.
The receiver will state, ”Heating on” or ”Heating
off”.
Ifyouwish to change the status, presskey1 again.
Consultation or change of status of
the ”H.W.S.” service
-By pressing key 2 of the emitter, you will be
informed of the status of the hot water service.
The receiver will state, ”Hot water on” or ”Hot
water off”.
Ifyouwish to change the status, presskey2 again.
Operation over the receiver
When the receiver is connected to the supply
voltage, the LED remains off and the receiver
does not accept any tones emitted via the
microphone and does not issue any messages via
the loudspeaker (see ”off position”). The receiver
incorporates three switches: (heating),
(HWS) and (loudspeaker).
Once the receiver is receiving supply voltage, the
green voltage LED will light up.
”Heating” selection
-Press the key. The LED:
-lights up = the heating service is operating
normally.
-does not light up = the heating service is
disconnected.
”Hot water” selection
-Press the, key. The, LED:
-lights up = the HWS service is operating
normally.
-does not light up = the HWS is disconnected.
”Loudspeaker” selection
At OFF.
-Press the key. (*)
(*)This is not necessary when connecting the receiver to
the mains for the first time.
The LED is off and the receiver:
-Does not admit tones from the emitter via its
microphone.
-Does not issue messages via its loudspeaker.
-Admitsmessageson the phone line at theeighth
call.
-Issues messages on the phone line.
At ON
-Press the key. The LED lights up and the
receiver:
-Admits tones from the emitter via its
microphone.
-Issues messages via its loudspeaker.
-Admits messages on the phone line at the
eighth call.
-The ”loudspeaker” LED flashes slowly while a
call is being answered by the receiver
Disconnected
-Press the key for 3 seconds. The LED
will flash rapidly and the receiver:
-Is disconnected from the phone line.
-Does not answer any calls.
Press the key to return to the ON position.
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