Control unit
With built-in ambient temperature sensor.
To be installed in zone 1.
Load shedding
(if installed)
Outside air
temperature
Outdoor unit
Installation
water outlet
temperature
Installation
water return
temperature
Control by pilot wire for 2
nd
zone (if any) with electric convectors.
Application: 1 FLOOR ZONE or 1 TERMINAL UNIT ZONE or
1 RADIATORS ZONE
ECO signal to remote controls.
For the terminal unit zone.
Application: 1 TERMINAL UNIT ZONE or 2 MIXED ZONES
BUS connection to 2-zone module M2ZP or M2ZM.
Applications: 2 FLOOR ZONES or 2 MIXED ZONES or
to DHW preparation tank KPECS
(Application: 1 RADIATOR ZONE)
Possible connections to be
made depending on the
applications
A) BUS
- 2-conductor shielded cable, minimum size 1 mm
2
with shielding grounded on indoor unit side (*).
- Total length of the BUS connection: 40 meters (indoor unit / control box connection + indoor unit / 2-zone module
connection, if any or possible DHW tank).
- To be connected to the (+) and (-) terminals if terminal strip XB.
(*) Refer to the ground shielding principle in paragraph 4.3.3.
B) Outside temperature sensor
- 2-conductor cable, min. size 0.5 mm
2
.
- Maximum length 25 meters.
- To be connected to the heating board A1.
- Note:
This sensor must be located outside in a location that is representative of the temperature to be measured (on a wall facing
North / North-west) and located away from parasitic heat sources (chimney, thermal bridge, etc..) and sheltered from
inclement weather (under a roof overhand, for example)
.
C) Outdoor unit control connection
- 2-conductor shielded cable with shielding grounded on both the outdoor unit and indoor unit side.
- Minimum cable size: 0.75 mm
2
.
- Maximum length 70 meters.
- Connection as per paragraph 4.3.3.
D) Module additional heating load shedding signal (if installed)
- Two possibilities:
1) By a "remote info" signal coming from the electrical utility meter: 1 twisted pair (6/10) cable with shielding (shielding
grounded on module side).
2) By a good quality, potential-free external contact.
- Contact closed = load shedding of the additional electric heating.
- 2-conductor cable, min. size 0.5mm
2
.
- Maximum length 25 meters.
- To be connected to the heating board A1.
Indoor unit
GB
