8902RHLD-WX Wireless Hydronic Thermostat
Key Specifications
· Wireless water heating thermostat (hydronic floor heating)
· Wireless RF two-way connection, long transmission range
· Linkage function available
· Standard configuration: one indoor unit paired with one outdoor unit; supports up to four outdoor units at most
· Powered by two AAA batteries
· Faceplate size: 86×86×14mm · Receiver size: 91×60×27mm
· Faceplate weight: 130g
Why Choose 8902RHLD-WX
· Wireless RF Communication – Two-way wireless connection with long range, no control wiring needed
· Linkage Function – Supports device-to-device automation (e.g., with fresh air or other HVAC components)
· Multi‑Outdoor Support – One indoor unit can pair with up to four outdoor units for flexible expansion
· Battery Powered – Runs on two AAA batteries, easy installation without power wiring
· Ultra‑Slim Faceplate – Only 14mm thick for a sleek wall appearance
· Compact Receiver – Small receiver size (91×60×27mm) for discreet mounting
· Lightweight – Faceplate only 130g
Operation Functions
1. Button Locking
– Prevents accidental adjustments.
2. Time Adjustment
– Set and maintain accurate system time.
3. Programmable Scheduling
– Set separate time periods and target temperatures for Weekdays (Mon-Fri) and Weekends (Sat-Sun).
4. Advanced Options
– Customizable settings for specialized use cases.
5. Floor Temperature Monitoring (Optional)
-View current floor temperature (Requires dual sensor configuration).
6. Low-Temperature Protection (Optional)
– Automatically turns ON heating when the system is OFF and room temperature drops below the set protection limit.
– Turns OFF once above the limit (Configurable in Advanced Settings; default OFF).
7. High-Temperature Protection (Optional):
– Automatically forces heating OFF if an external sensor detects temperature above the set protection limit.
– Resumes heating once below the limit (Requires dual sensor configuration and external sensor).
8. Sensor Fault Diagnostics:
– Automatic “Err”, “E1”, or “E2” error display and heating shutdown if a sensor fails. Heating resumes after fault correction.
9. Factory Reset
– Restore all settings to original defaults.