28
3.2.12. Room thermostat connection (optional equipment)
The boiler can be connected to a room thermostat (not supplied with the boiler). Room thermostat contacts are to be connected to M9
position of the boiler printed circuit board (pic. 21), after removal of the jumper which is delivered as standard fitting to the boiler.
Room thermostat wiring must not be grouped together with power mains supply cables.
3.2.13. Open Therm remote control installation and operation procedure (optional equipment)
The boiler can be connected to an Open Therm remote control (optional equipment).
Installation is to adhere to the following procedure:
- install 0SCHEREM00 printed circuit board, included in the Remote Control Kit (which is necessary for connection of the remote control
to the boiler), following the instructions described in the kit itself;
- position the remote control on a wall inside the premises, far from heat sources or draughts;
- separate, by means of a screwdriver, the rear part of the housing (grey) from the front one (white) and secure, by means of openings A
(pic. 17) the rear part to the wall;
- hook up the remote control to the boiler, connecting no. 1 and no. 2 positions of the remote control (pic. 17) to the terminal board
OPENTH M6 of code 0SCHEREM00 printed circuit board (see pic. 20 electric layout). The connection of BUS is protected against false
polarity, that means the connections can be switched;
•
employ two wired electric line for the connection, and with the following characteristics:
•
maximum length: 40 meters;
•
maximum impedance: 2 x 4Ω/m;
•
interlaced or sheathed wires can be installed in order to avoid disturbances;
• remote control wires are not to be routed together with electric supply cables;
- now, should the external probe or the phone operation device not be in need to be installed, close the remote control housing, othe-
rwise, follow the instructions described in the following paragraphs.
The remote control is not to be connected to a 230V electrical power supply.
Refer to the manual included in the remote control Open Therm kit, in
order to program it.
A series of parameters, called TSP, reserved to qualified personnel (no. 14
and no. 15 charts), can be read and set through the remote control.
TPS0 parameter sets default data chart and restores all original values,
cancelling all preceding modifications on single parameters.
When the value of a single parameter is detected to be wrong, its value is
restored from the default data chart.
When a parameter is tried to be set to a value out of the allowed range,
the new value is rejected and the existing one is kept.
pic. 17 - Open Therm remote control installation
Parameter
Range of values
to be set
default values by
TSP0 = 1 - KC/KR 24
default values by
TSP0 = 3 - KC/KR 32
TSP0
Equipment type and default data chart
1 - 3
1
3
TSP1
Fan speed at burner max. output (DHW)
120 ÷ 250 Hz
(3600 ÷ 7500 rpm)
181 Hz
(5430rpm)
193 Hz
(5790 rpm)
TSP2
Fan speed at burner min. output (DHW and CH)
30 ÷ 120 Hz
(900 ÷ 3600 rpm)
53 Hz
(1590rpm)
56 Hz
(1680 rpm)
TSP3
Fan speed at burner ignition and spread
30 ÷ 160 Hz
(900 ÷ 4800 rpm)
67 Hz
(2010rpm)
67 Hz
(2010 rpm)
TSP4
CH max. output upper limit, adjustable via P4 trimmer
10 ÷ 100%
84%
90 %
No. 14 chart – Limits to be set for TSP parameters and default values in relation to boiler type (TSP0)
Parameter
Minimum limit
Maximum limit
TSP5
P6 trimmer position
0
(thermoregulation curve = 0.0)
255
(thermoregulation curve = 3.0)
TSP6
Fictitious temperature set via adjuster 11
(only when external probe is installed)
15°C
35°C
No. 15 chart – TSP chart of parameters which can be displayed (these parameters cannot be adjusted via remote control)
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