5
ENGLISH
3 - HYDRAULIC CONNECTIONS
Position and dimensions of hydraulic connections are specified in
figure 1.1
:
A -
CH return
3/4”
B -
CH delivery
3/4”
C -
Gas connection
3/4”
D -
DHW outlet
1/2”
(GREEN C.S.I. only)
E -
DHW inlet
1/2”
(GREEN C.S.I. only)
F -
Support plate
G -
Pre-installation template
If water hardness exceeds 28°Fr, it is recommended to use water softeners, to
prevent any limestone deposit in boiler due to excessively hard water.
4 - INSTALLING THE EXTERNAL PROBE
The correct position of the external probe is essential for the climatic control
function to run properly.
The probe must be installed outside the building to be heated, at about 2/3 of
the height of the NORTHERN or NORTHWESTERN face, far from flue pipes,
doors, windows and sunny areas.
Attaching the external probe to the wall (Fig. 1.6)
- To access the terminal board and anchor holes, unscrew the plastic probe
cover from the housing by rotating it anticlockwise
- Mark the points where the holes will be drilled using the probe housing as a
template
- Remove the box and drill holes for 5x25 expansion grips
- Fix the housing to the wall using the two supplied expansion grips
- Unscrew the cable-holding nut, insert the bipolar cable (with a cross section
between 0,5 and 1mm
2
, not supplied) for the connection between the probe
and the boiler
- For the electrical connection between the external probe and the boiler, refer
to the chapter “Electric connection”
- Tighten the cable-holding nut properly and close the cover of the protective
box.
The probe must be positioned on a smooth surface. In the case of a brick
wall or a wall with an irregular surface, provision must be made for a smooth
contact surface.
The maximum length of the connection between the external probe and
the boiler is 30 m.
The connection cable between the probe and the boiler must not have
connections. If these prove to be necessary, they must be made watertight
and suitably protected.
Any ducts for the connection cable must be separate from other power
lines (230 V.a.C.).
5 - CONDENSATE COLLECTION
The outlet collector (
A
, Fig. 1.7) collects: the condensate water, any evacuation
water from the safety valve and the system outlet water.
The collector must be connected, by means of a rubber pipe (not supplied),
to a suitable collection and evacuation system in the storm water outlet
and in compliance with current regulations.
The external diameter of the collector is 20 mm: we therefore suggest
using an Ø 18-19 mm pipe, to be closed with a suitable clamp (not supplied).
The manufacturer is not responsible for any damage caused by the lack of
a collection system.
The outlet connection line must have a guaranteed seal.
The manufacturer of the boiler is not responsible for any flooding caused
by interventions of the safety valve.
6 - GAS CONNECTION
Before connecting appliance to gas pipe network, check the following:
- regulations in force are met
- gas type used is the same as set for appliance operation
- pipes are clean.
Gas must be piped externally. If the pipe goes through a wall it must go through
the central opening in the lower part of the template. It is recommended to
install an appropriately sized filter on the gas line in case gas from the mains
contains some small solid particles. After installation make sure that all the
joints have been made airtight conforming to standard installation practices.
7 - ELECTRIC CONNECTION
To access the electrical connections, proceed as follows:
- unscrew the lower cover fixing screw (
C
, Fig. 1.4)
- pull the cover towards you and remove (
A-B
) (Fig. 1.5)
- loosen the fixing screws (
D
) and remove the shell (Fig. 1.2)
- lift up the panel and turn it forwards
- open the terminal board covers making them slide in the direction of the
arrows (Fig. 1.8:
E
high voltage connections 230 V,
F
low voltage connections,
G
water tank sensor connections only GREEN R.S.I.).
Connect the appliance to the mains power supply with a switch featuring a
distance of at least 3,5 mm (EN 60335-1, category III) between each wire. The
appliance uses alternating current at 230 Volt/50 Hz, has a power input of 130
W (16kW R.S.I. - 25kW C.S.I. - 25kW R.S.I.) and 175 W (35kW R.S.I. - 35kW
C.S.I.) and complies with EN 60335-1 standard. Connect the boiler to a safe
earth circuit according to current legislation.
Live and neutral (L-N) connections should also be respected.
The boiler can operate with phase-neutral or phase-phase power supply. For
floating power supply, without an earth-bonded conductor, it is necessary to
use an insulation transformer with secondary anchored to ground.
The earth conductor must be a couple of cm longer than the others.
Gas and/or water pipes may not be used to earth electrical equipment.
The installer is responsible for making sure that the appliance has an
adequate earthing system; the manufacturer shall not be held liable for
eventual damages caused by incorrect usage or failing to earth the boiler.
Use the
supplied power cable
to connect the boiler to the mains power supply.
Connect the ambient thermostat and/or time clock as shown in the electrical
diagram on page 125.
When replacing the power cable, use a HAR H05V2V2-F cable, 3 x 0,75
mm
2
, Ø max. external 7 mm.
8 - FILLING AND EMPTYING THE SYSTEM
The central heating system can be filled up once the water mains have been
connected up.
This must be done while the installation is cold by:
- giving two or three turns to the cap of the automatic air vent valve (
A
, Fig. 1.9)
to open it;
- making sure the cold water inlet tap is open (
B
, Fig. 1.9) (GREEN C.S.I.
only)
- opening the filling tap (
C,
on the boiler for GREEN C.S.I., external for GREEN
R.S.I.) until the pressure on the hydrometer (
D
) is between 1 and 1,5 bar
(blue zone) (Fig. 1.9).
Close the filling tap after filling it up.
The boiler is equipped with an efficient air separator so that there is no need to
do anything manually.
The burner only ignites when air venting has finished.
NOTE:
air extraction from the boiler takes place automatically, through two
automatic bleeding valves,
A
and
E
.
The first is situated on the pump, while the second is inside the air chamber.
NOTE (GREEN C.S.I. only):
the boiler is also equipped with a semi-automatic
filling system. The first system-filling operation must be carried out by opening
tap
C
with the boiler turned off.
NOTE (GREEN R.S.I. only):
manual filling tap is not supplied with the boiler,
foresee one external or verify if external water tank has one.
Before starting to empty it, remove the electrical feeder by positioning the general
switch for the system on “off”.
- Close the interception devices for the thermal system
- Loosen the system outlet valve (
F
) manually
- The water from the system is discharged through the outlet collector (
G
).
DHW system emptying (GREEN C.S.I. only)
The hot water system must be emptied every time there is risk of freezing by:
- turning off the tap at the mains
- turning on all the hot and cold taps
- emptying out the lowest parts of the system.
ATTENTION
The collector must be connected, by means of a rubber pipe (not supplied), to
a suitable collection and evacuation system in the storm water outlet and in
compliance with current regulations. The external diameter of the collector is
20 mm: we therefore suggest using an Ø18-19 mm pipe, to be closed with a
suitable clamp (not supplied). The manufacturer is not responsible for any
damage caused by the lack of a collection system.
