Tag: Y9520Z1007
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Honeywell Sundial RF2 Pack 5 User Guide
Sundial RF²Pack 5Wireless Enabled 2 Zone Programmer and Thermostats (Y9520Z1007) In a heating system that has no room thermostat, or the system needs upgrading to 2 heating zones, the existing wiring can be used to provide a Boiler Interlock by fitting Sundial RF² Pack 5. The pack contains: A wireless-enabled 2 zone programmer (ST9520C) 2 x…