Control - Carrier 42AM serie Installations-, Betriebs- Und Wartungsanleitungen

14 - CONTROL

SINGLE-PHASE EC BOX (for air heaters or destratifier units fitted with SINGLE-PHASE EC motors)
Thank you for purchasing the "SINGLE-PHASE EC BOX" electronic control solution for AIR HEATER or DESTRATIFIER units fitted
with SINGLE-PHASE EC motors. Up to 6 AIR HEATER or 6 DESTRATIFIER units or even 3 AIR HEATER + 3 DESTRATIFIER units
can be controlled using a single box.
This box allows the following:
■ Proportional variation of the supply air speed for the EC single-phase fan motor assembly (0-10 V FMA) according to the heating
requirements of your building.
Heat or cool as precisely as possible in accordance with your needs.

■ Supply water to one or more heat exchangers according to your building's heat requirements (available with the optional valve kit).
Control your supply air temperature to improve comfort levels and maintain the range of the air streams.

■ Choose between fresh air only or mix with frost protection via the servomotor to be installed on the 2-channel mixing box with built-
in filter (available with the fresh air kit damper servomotor + frost protection thermostat kit) or 100% recirculated air.
Adjust the fresh air rates in your building to meet current requirements or based on room occupancy levels (built-in

timer).
■ The internal timer can be configured on a weekly basis using 3 operating modes (Comfort, Eco, Frost protection), allowing you to
make environmentally-sound use of your air heaters.
The heating requirements of your building will depend on its occupancy level.

■ Centralised management of the AIR HEATER units via the master controller allowing up to 10 SINGLE-PHASE EC BOX slave units
to be controlled (one EC BOX master or slave unit controls 6 AIR HEATER units or 3 AIR HEATER units + 3 DESTRATIFIERS).
The display shows the operating status of each individual AIR HEATER unit (fresh air or return air, motor fault, risk

of frost, etc.)
■ All of the protective devices necessary to connect 6 units (air heaters or destratifiers) as well as 6 valve kits.
Plug & Play solution

■ A remote on/off control is available as well as a two separate fault summaries. Possibility to communicate via ModBus, JBUS or
Bacnet IP.
Networked solution

Refer to the instruction manual supplied in the packaging of your SINGLE-PHASE EC BOX for further information or contact your
CARRIER agent.
3 speed EC thermostat
■ Functions
The EC control includes a temperature selector (range from 10°C to 30°C) that maintains the room temperature at the selected value.
■ FAN operation
The user can use the fan speed selector button to set the fan's operating mode to manual or automatic.
In manual mode, three types of speed can be selected (low, mid, high) depending on the requirements or energy saving

mode. This energy saving mode is particularly useful for air conditioning in rooms at night or rooms left unoccupied for long
periods.
In automatic mode, the fan speeds are controlled by a microprocessor housed in the control unit, according to the temperature

selected. (see table below. 3 speeds possible depending on the heliotherme model)
Shunt 6 Shunt 7
Closed Closed
Closed Closed
Closed Open
Closed Open
Open Closed
Open Closed
Open Open
Open Open
XX7436983-07_IOM_11_2019_42AM_AMA.indb 33 XX7436983-07_IOM_11_2019_42AM_AMA.indb 33
Shunt 8 LOW
Closed → 2 V
Open → 2 V
Closed → 6 V
Open → 2 V
Closed → 8 V
Open → 5 V
Closed → 4 V
Open → 3 V
MID HIGH
Heating
42AM-EC30/
6 V 10 V
42AM-EC45
4 V 6 V
8 V 10 V
3 V 4 V
9 V 10 V
42AM-EC40/
6 V 7 V
42AM-EC63
6 V 8 V 42AM-EC50
6 V 9 V 42AM-EC35
Heliotherme model
Cooling
42AM-EC50/
42AM-EC63
- -
- -
42AM-EC40/
-
42AM-EC45
- -
-
42AM-EC30
42AM-EC35
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