External Heater, Cooler (Coil2) - Salda AMBERAIR COMPACT S-CX H Operation, Installation & Maintenance Instructions

4.16.3. EXTERNAL HEATER, COOLER (COIL2)

For AmberAir Compact units without an integrated combined heating/cooling coil, it is possible to connect the external DX cooler and external
combined heating/cooling coil.
For units with integrated combined heating/cooling coil, it is possible to connect an external DX cooler and the external water heater.
These components are controlled with DO and 0-10V outputs. When digital output (EX2 DO3 for combined heating/cooling coil; EX2 DO8 for water
heater; EX2 DO10 for DX cooler) activates, the external device (DX cooler or water circulation pump) should start. When digital output deactivates,
the external device should stop.
Analog output (MCB AO3 for water heater; EX1 AO2 for DX cooler; EX1 AO3 for combined heating/cooling coil) - DX cooler control or water valve
actuator control signal. It sets the needed value of heating/cooling of the external device. Combined heating/cooling coil water return temperature
sensor connects to EX1 AI4. The coil mode (heating/cooling) can be switched with a reverse thermostat (NC/NO) which connects to MCB DI1.
Water heater return water temperature sensor connects to MCB AI7. Combined heating/cooling coil and water heater additionally use a protection
thermostat (NC) which connects to MCB DI2.
When combined heating/cooling coil and other heater (electrical or water) are used together in the same control system, combined coil can only
work in cooling mode and protection thermostat can only be used by water heater. The EX1 DI5 is used for DX cooler protection (NO/NC input
2 3
mode can be configured). Its heating/cooling reverse input connects to EX2 DO9 (NO-cooling; NC-heating).
18 | EN
4 5
+CB
- N2
EX1 V2.0
0-10 VDC
24VDC
-M7
Control
+UC
Fig. 4.16.3.1 External DX cooler connection
DX cooler
Connections principal scheme
6 7
- N2 -N3 -N3
EX1 V2.0 EX2 V1.0 EX2 V1.0
-K4
1 2 1 2
Protection Reverse Start
DUTIES / NAME
EI O. Drąsutis
DRAWN BY
EI D. Aleksandravičius
CHECKED BY
APPROVED BY
AMBERAIR COMPACT S-CX v2023.3
8 9
SIGNATURE DATE
2023-03-27 UAB"SALD
2023-03-27
2023-03-27