Honeywell RTHL3550 インストールガイド

Remove old thermostat but leave wallplate with  
wires attached.

M28099

Is there a sealed tube containing 
mercury? If so, see notice below 
for proper disposal instructions.

Leave wallplate in 
place

Old thermostat

Cover

MERCURY NOTICE: Do not place your old 
thermostat in the trash if it contains mercury in a 
sealed tube. Contact the Thermostat Recycling 
Corporation at www.thermostat-recycle.org or 800-
238-8192 for information on how and where to 
properly and safely dispose of your old thermostat.