Johnson Controls Touchscreen Thermostat | T9800-TF21-1JS0-B0 | Modulating BACnet | Humidity Sensor

Description:
The Johnson Controls T9800-TF21-1JS0-B0 is a high-performance modulating BACnet touchscreen thermostat designed for advanced HVAC control in smart buildings. Engineered for 2-pipe and 4-pipe Fan Coil Units (FCUs), this thermostat supports single-speed, 3-speed, and ECM motors, making it versatile across multiple system types.

Equipped with 3 relays and an analog output (AO) for EC fan modulation, it ensures precise airflow control and superior energy efficiency. With BACnet communication, it integrates seamlessly into building automation systems. A built-in humidity sensor provides added comfort and environmental control, while the occupancy mode optimizes energy use based on real-time presence detection.

Supporting connections with dry contact sensors (e.g., PIR, door card, dew point) and JCI 10K NTC temperature sensors (like TE-636S-1), this model is ideal for commercial, hospitality, and residential applications including FCUs, AHUs, boilers, water-source heat pumps, and floor heating systems.

Key Features:
⦁ Model: T9800-TF21-1JS0-B0 – Advanced BACnet Thermostat with AO and 3 Relays
⦁ Communication: BACnet protocol for seamless BAS integration
⦁ System Support: Controls 2/4-pipe FCUs, single/3-speed fans, ECM motors
⦁ Analog Output + 3 Relays: Optimized fan modulation and flexible control
⦁ Built-In Humidity Sensor: Enables precise indoor climate control
⦁ Occupancy Mode: Saves energy using signals from PIR, door cards, or sensors
⦁ Sensor Compatibility: Supports JCI 10K NTC temp sensors (e.g., TE-636S-1)
⦁ Versatile Applications: Use with FCUs, AHUs, floor heating, boilers, and heat pumps
⦁ Flexible Input Support: BI accepts dry contacts for dew point, filter pressure, etc.
⦁ Air Quality Enhancements: Supports TiO2 / ESP for cleaner environments
⦁ Touchscreen Interface: Intuitive operation with modern design aesthetics