Sensi · Standalone
Sensi 1F87U-42WF Smart Thermostat
Wi-Fi thermostat with app scheduling for conventional systems up to 2H/2C and heat-pump systems up to 4H/2C, subject to wiring and common-wire requirements.
Legacy model
Will this work with my system?
Match your equipment to these requirements before ordering.
Works with
- Conventional gas, oil or electric systems up to 2H/2C
- Heat pumps up to two compressor stages with auxiliary heat, maximum 4H/2C
- Documented three-wire zone-valve applications with a common wire
System requirements
- 20–30 VAC control system.
- Common wire required for heat pumps, heat-only, cool-only, three-wire zone valves and Apple HomeKit.
- 2.4 GHz Wi-Fi, Sensi app and an account are required for connected setup and remote access.
Limitations & exclusions
- Millivolt and economizer applications are not supported by the exact-model selection chart.
Check before you buy
- Compare the installed equipment voltage, stage count and terminal functions with the installation manual before selecting this model.
- Check the full model and terminal labels in the Sensi app’s installation workflow, including the common-wire requirement for the equipment type.
- For separate heating and cooling transformers, compare the internal RH/RC jumper with the manufacturer wiring diagram.
Manufacturer documentation (2)
Use these documents to compare your exact model and configuration.
Overview
Wi-Fi thermostat with app scheduling for conventional systems up to 2H/2C and heat-pump systems up to 4H/2C, subject to wiring and common-wire requirements.
Sensi provides app-based scheduling, keypad lockout and adjustable temperature limits. The specification sheet separates conventional heat/cool installations that can use power sharing from applications that require a common wire. The installation guide covers model identification, Wi-Fi setup and equipment configuration.
Selection and installation
Use the linked manufacturer documents to compare the exact model, equipment configuration and installation requirements before ordering.
Product details
- Manufacturer
- Copeland Comfort Control
- SKU
- 907755
- Model / MPN
- 1F87U-42WF
- Condition
- New
- Lifecycle
- Legacy
Specifications
- Power sources
- Conventional heat/cool: battery with power sharing or hardwired common; heat pump, heat-only and cool-only: hardwired common
- Supply voltage
- 20–30 VAC, 50/60 Hz
- Contact ratings
- 1.5 A per terminal; 2.5 A combined maximum
- Stage modes
- Conventional: up to 2H/2C; heat pump: up to 4H/2C including auxiliary heat
- Scheduling modes
- 7-day, non-programmable and geofencing options
- Schedule periods per day
- Up to 8
- Setpoint range
- 45–99 °F (R-4552-15 specification)
- Operating temperature
- 32–105 °F
- Operating humidity
- 90% RH maximum, non-condensing
- Keypad lockout
- Total keypad lockout through Sensi app
- Setpoint limits
- Adjustable minimum/maximum limits
- Dual transformer support
- Yes; follow the internal RH/RC jumper instructions
- Millivolt support
- Not listed as compatible in the exact-model selection chart
- Remote sensor support
- No remote sensor option listed in R-4552-15
- Changeover modes
- Automatic changeover available
- Dimensions
- 5.88 in W × 3.75 in H × 1.00 in D