Immergas CRD User manual

Instruction booklet

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Dear Customer,
Congratulations on choosing a high quality
Immergas product designed to ensure lasting
comfort and safety.
As an Immergas Customer you can always
count on an expert and qualified Authorised
Assistance Service able to guarantee the
constant efficiency of your “Digital Remote
Control”.
Compliance with the following instructions
will ensure your satisfaction with the
Immergas product:
• Carefully read the following pages as they
contain useful information on correct use
of the appliance.
• For any intervention or routine main-
tenance requirements, always contact
“Immergas Authorised Centres”: which
have original spare parts and specifically
trained personnel.
IMPORTANT: Before connecting, make
sure the Immergas boiler model installed is
arranged for the Digital Remote Control;
consult the boiler instruction handbook.

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
INTRODUCTION ................................. 4
GENERAL INSTRUCTIONS ................ 4
1. INSTALLATION .......................... 6
1.1 Installation instructions. ................. 6
1.2 Installation operations .................... 6
2. DESCRIPTION OF CONTROLS . 10
3. DESCRIPTION OF DISPLAY ..... 11
4. BOILER TEMPERATURE
AND OPERATION MODE
ADJUSTMENT ............................ 12
4.1 Operation in stand-by mode
(antifreeze) ..................................... 12
4.2 Operation in domestic hot water
mode .............................................. 12
4.3 Domestic hot water temperature
adjustment ..................................... 12
4.4 Operation in heating mode
( ) ........................................ 13
4.5 Heating water temperature
adjustment ..................................... 13
5. MANUAL ROOM TEMPERATURE
ADJUSTMENT ............................ 14
5.1 Manual operation ........................... 14
6. AUTOMATIC ROOM
TEMPERATURE ADJUSTMENT . 16
6.1 Current day and time adjustment ... 16
6.2 Automatic operation with preset
program. ......................................... 18
6.3 Automatic operation with
personalised program. ..................... 19
6.4 Room temperature temporary
change ............................................ 22

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
7. INFORMATION .......................... 24
8. DIAGNOSTICS AND ERRORS .. 26
9. SPECIAL FUNCTIONS ............... 28
10. TECHNICAL
CHARACTERISTICS ................... 30
11. FACTORY SETTINGS .....................31
EC DECLARATION OF
CONFORMITY ............................ 32

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
is manual has been prepared for: the
Installer and the User.
• Read this document carefully as it pro-
vides the technical characteristics and
instructions on installation, assembly,
programming, adjustment and correct
use of the CRD.
• Execution of the system must comply
with current CEI regulations.
• e instruction manual must be consid-
ered a part of the CRD and “kept for
future reference”.
• After unpacking, check the good condition
of the CRD. In case of doubt do not use it,
and contact the Dealer or Manufacturer.

e “Immergas” programmable “Digital
Remote Control” (hereinafter CRD) is
designed to guarantee ideal temperature
conditions at any time of the day and night
for every single day of the week.
Installation takes just a few minutes: in fact
it is connected to the boiler with only 2 wires
through which it is powered and receives and
sends adjustment and control commands.
After installation it is ready to use, thanks
to the preset program inside. e customer
can modify the basic program according
to needs.
e CRD is extremely easy to program and
a large display allows all the settings to be
constantly checked.

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• e CRD must only be used for its
expressly designed purpose. Any other
use is deemed improper and therefore
dangerous.
• Our products are manufactured in con-
formity with current safety regulations,
therefore always use the devices properly
and with care so as not to cause damage
or injury.
• Do not dismantle parts of the CRD
when it is operating.
• Do not use the CRD exposed to heat
sources or in the hot sun.
• e manufacturer declines any liability
in following cases:
a) Incorrect installation.
b) Malfunctioning of the boiler to which
the CRD is applied.
c) Unauthorised modifications or inter-
ventions.
d) Total or partial non-compliance with
the instructions.
e) Exceptional events, etc.

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
Immergas reserves the right to make improve-
ments and changes to parts and accessories,
holding good the essential characteristics of
the model described and illustrated in this
handbook.


Installation of the CRD, including cables
and connection to the boiler, must be car-
ried out by specialised personnel. With the
initial free boiler check, when the CRD
is included in the system, the Immergas
Authorised Assistance Centre checks the
connection to the generator terminal block
and correct operation. e free check of
just the CRD by the Immergas Authorised
Assistance Centre is not provided for if
requested after the start of the boiler war-
ranty phase.
Important: the free boiler check does not
include the laying of the CRD wires, which
is the installer’s responsibility.

1) Separate the fixing template from the
Digital Remote Control body by prising
with a screwdriver in the special recess
(Fig. 1).

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Install the Digital Remote Control away
from heat sources and in a suitable posi-
tion for correctly measuring the room
temperature (Fig. 2 and 3).
Fig. 3
Fig. 2

1.5 m
Fig. 1

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2) Install the Digital Remote Control di-
rectly on the wall (Fig. 1) by means of
the special holes in the back and using
the screws supplied.
3) Carry out the electrical connections to
the boiler (terminals 40 and 41), mak-
ing sure the boiler is not powered; refer
to the electrical connections given in
the boiler instruction handbook. Con-
nection polarity does not have to be re-
spected for the Digital Remote Control.
Connection to the boiler is made using
two wires (Fig. 1) of min. section 0.50
mm2 - max. section 1.5 mm2 and max.
length 50 m.
NB: For correct installation arrange a
dedicated line for connecting the CRD in
conformity with the current regulations
on electrical systems.
If this is not possible, any interference
due to other electrical cables could cause
malfunctioning of the CRD.
4) Fix the body of the Digital Remote Con-
trol to the support template by pressing
it on (Fig. 1).

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