Thermostat - 33ET+ 33ET+
Thermostat - 33ET+
33ET+
The Carrier 33ET+ thermostat is an entry-level, wall-mounted model designed for controlling hydraulic fan coil units with AC or EC motors. Offering essential functions such as automatic hot/cold changeover, frost protection, electrical heater and weekly programming, it guarantees reliable thermal comfort and energy savings in residential or commercial settings.
The 33ET+ electronic thermostat is available for water control and ventilation. For water control, it acts on valves with 230V TOR thermal motors. For ventilation, it can be used with either:
- 3-speed 230V AC motor
- 3-speed 0–10 V EC motor
The 33ET+ thermostat range comprises the following models:
- 33ET+A for a 2-pipe AC motor
- 33ET+B for a 4-pipe AC motor
- 33ET+C for 2-pipe EC motor + electrical heater
- 33ET+D for a 4-pipe EC motor
The thermostat is designed for flush mounting, screwing into a standard 60 mm flush-mounting box.
It can also be surface-mounted using the supplied accessory.
Features:
- Manual or automatic switching between heating and cooling.
- Four operating modes: Comfort, Economy, Frost Protection, and Off.
- Power supply: 230 V
- Manual or automatic three-speed fan control.
- Weekly programming.
- Changeover via sensor or dry contact.
- Electrical heater (33ET+C only for a two-pipe, two-wire system).
- It has a potential-free input for a window contact.
- The change-over probe kit: enables the automatic detection of the changeover from heating to cooling mode (and vice versa) in two-pipe systems. The kit includes a probe, a 2.5-meter cable, Faston lugs, and an adapter. This essential device ensures automatic mode changeover according to the temperature of the water circulating in the system.
- Surface-Mounted Box: Used for installing the thermostat on the surface of a wall when flush-mounting is not possible. Ensures clean, discreet, and protected wall mounting.
- Relay kit: Mandatory for controlling electrical heater up to 2,000W.
The 33ET+ electronic thermostat is available for water control and ventilation. For water control, it acts on valves with 230V TOR thermal motors. For ventilation, it can be used with either:
- 3-speed 230V AC motor
- 3-speed 0–10 V EC motor
The 33ET+ thermostat range comprises the following models:
- 33ET+A for a 2-pipe AC motor
- 33ET+B for a 4-pipe AC motor
- 33ET+C for 2-pipe EC motor + electrical heater
- 33ET+D for a 4-pipe EC motor
The thermostat is designed for flush mounting, screwing into a standard 60 mm flush-mounting box.
It can also be surface-mounted using the supplied accessory.
Features:
- Manual or automatic switching between heating and cooling.
- Four operating modes: Comfort, Economy, Frost Protection, and Off.
- Power supply: 230 V
- Manual or automatic three-speed fan control.
- Weekly programming.
- Changeover via sensor or dry contact.
- Electrical heater (33ET+C only for a two-pipe, two-wire system).
- It has a potential-free input for a window contact.
- The change-over probe kit: enables the automatic detection of the changeover from heating to cooling mode (and vice versa) in two-pipe systems. The kit includes a probe, a 2.5-meter cable, Faston lugs, and an adapter. This essential device ensures automatic mode changeover according to the temperature of the water circulating in the system.
- Surface-Mounted Box: Used for installing the thermostat on the surface of a wall when flush-mounting is not possible. Ensures clean, discreet, and protected wall mounting.
- Relay kit: Mandatory for controlling electrical heater up to 2,000W.
