Installation Instructions
Document No. 129-497
May 18, 2011
RDF Series Room Temperature
Controllers
Item Number 129-497, Rev. BA Page 1 of 7
Product Description
Room Temperature Controllers with LCD for two-
pipe (with and without an electrical heater) and four-
pipe fan coil units.
Product Numbers
Part Number Application
RDF10U Two-pipe fan coil units
RDF20U Two-pipe fan coil units with
electrical heater
RDF30U Four-pipe fan coil units
RDF50.1U Two-pipe fan coil units with 0 to 10
Vdc output
Required Tools
• Small, flat-blade screwdriver
• Wire strippers
• Electric drill
Expected Installation Time
30 minutes
Accessories
• 141-570 Lockable Thermostat Guard
• ARG70 Wall Plate Adapter
• QAH11.1 Remote/Changeover Sensor
Installation
Step 1. Loosen retaining screws.
Step 2. Remove controller housing.
Step 3. Mount base plate to wall.
Step 4. Remove screw and open terminal cover.
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