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12.4 - Master/slave control
It is possible to link a maximum of two ULTRAs to one Carrier thermostat without the need for additional relays. Electrothermal
on/off valves rated at 230 V a.c. are used. When electric heaters are used with a cooling coil, it is essential for the electric heater
to have a power relay.
Alimentation : 230V, 50Hz, 1 ph
3G1,5mm
2
Protection : T 2A
N
L
5 x 0.75mm
2
7 x 0.75mm
2
Vitesse 2
Vitesse 3 (GV)
L : alimentation thermostat (230V a.c.)
N : alimentation thermostat (230V a.c.)
Vitesse 1 (PV)
Ouverture vanne chaude
Ouverture vanne froide
Alimentation : 230V, 50Hz, 1 ph
3G1,5mm
2
Protection : T 2A
N
L
4 tubes
5 x 0.75mm
2
Alimentation : 230V, 50Hz, 1 ph
3G2,5mm
2
Protection : T 16A
N
L
7 x 0.75mm
2
Commande batterie électrique
Vitesse 2
Vitesse 3 (GV)
L : alimentation thermostat (230V a.c.)
N : alimentation thermostat (230V a.c.)
Vitesse 1 (PV)
Ouverture vanne froide
Alimentation : 230V, 50Hz, 1 ph
3G2,5mm
2
Protection : T 16A
N
L
2 tubes - 2 fils
12.5 - Master/slave control: two-pipe + electric heater configuration
Cooling
valve
Heating
valve
Fan
Supply:
230 V, 50 Hz, 1 phase
3G1, 5 mm
2
Protection: T2A
Supply:
230 V, 50 Hz, 1 phase
3G2, 5 mm
2
Protection: T16A
Speed 1 (LS)
Speed 2
Speed 3 (HS)
Cooling valve control
Heating valve control
L: Thermostat supply (230 V a.c.)
N: Thermostat supply (230 V a.c.)
Fan
Supply:
230 V, 50 Hz, 1 phase
3G1, 5 mm
2
Protection: T2A
Fan
Fan
Cooling
valve
Supply:
230 V, 50 Hz, 1 phase
3G2, 5 mm
2
Protection: T16A
Speed 1 (LS)
Speed 2
Speed 3 (HS)
Cooling valve control
Electric heater control
L: Thermostat supply (230 V a.c.)
N: Thermostat supply (230 V a.c.)
Cooling
valve
Four-pipe configuration
Two pipes, two wires
SLA
VE
MASTER
SLA
VE
MASTER