39
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The boiler is designed to be connected to an ambient thermostat (optional, not compulsory).
Ambient thermostat contacts must be properly sized in compliance with a load of 5 mA at 24 Vdc.
Ambient thermostat cables shall be connected to electronic board pins
1
and
2
(fig. 23, 24 and 29), after having eliminated the jumper supplied as
a standard with the boiler.
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The boiler may be connected to an Open Therm Remote Control (non-compulsory optional accessory supplied by manufacturer).
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The correct operation of the Remote Control itself and of the boiler is not guaranteed if non original Remote Control units not
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To install the Remote Control, refer to the instructions provided with the Remote Control itself.
Please note the following precautions when installing the Remote Control:
- the remote control wiring must not be grouped together in the same sheath as the power cables:
if the cables are sheathed together,
electrical interference from the power cables may compromise the functions of the Remote Control;
- the Remote Control must be installed on an indoor wall at a height of approximately 1.5 m from the floor and in a suitable location for measuring
ambient temperature: do not install in recess or corners, behind doors or curtains, and install away from heat sources, direct sunlight, air draughts
and water sprays.
The Remote Control connector is protected against inverted polarity, and the connections may be inverted.
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For complete instructions on how to program the Remote Control, refer to the instruction manual included in the Remote Control kit.
Board and Remote Control communicate in each operating mode: OFF, SUMMER, WINTER, CH ONLY; as for the operating mode, boiler display
layout corresponds to the setting made from the Remote Control.
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The boiler can be connected to an (optional) external temperature probe (optional, provided by the manufacturer) for sliding temperature
operation.
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The external temperature probe must be connected by means of a double insulated wire, minimum cross-section 0.35 sq.mm.
The external probe must be connected to pins
5-6
of boiler electronic board (fig. 23, 24 and 29).
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The temperature probe must be installed on an outside wall facing NORTH - NORTH EAST, in a position protected from weather.
Do not install near a window, ventilation openings or sources of heat.
An easily accessible two-poled switch, with a minimum 3 mm distance between contacts, is to be installed ahead of the boiler. The switch is to
allow power supply cut-off in order to safely perform maintenance and service procedures.
Power supply to the boiler must be fitted with a residual-current circuit breaker having suitable disconnection capacity. Electric power supply must
be properly earthed.
The above mentioned safety measure must be verified. If in doubt, ask a qualified technician to thoroughly check the power network.
The manufacturer cannot be held responsible for any damage caused by failure to ground the system correctly:
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The boiler is supplied with a three-poled power cable, already connected to the electronic board and it is provided with a safety clamp.
The boiler is to be connected to a 230V-50Hz electrical power supply.
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Installation standards must be complied with and they are herein considered as entirely transcribed.
Summary of Contents for FORMENTERA CTFS 32
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