5 69-1199—4
STEP 1. PREPARE FOR INSTALLATION
qCheck Table 1, the compatibility chart, to make sure the thermostat is compatible with your system. If your system
is not compatible, call Honeywell Customer Care, toll-free, 1-800-468-1502.
Table 1. Compatibility Chart.
aCompatible with 2-wire Honeywell and Taco zone valves. Not compatible with 3-wire zone valves or 2-wire White
Rodgers no. 1361 zone valves.
bMillivolt system must be heating only.
cNot compatible with any 120/240 volt system.

Package Contents

• Thermostat • Wallplate • Screws and anchors
• Wiring labels • Owners manual

Tools Required

• Screwdriver
• Drill
System Type Compatibility with CT3500/CT3595
Gas — Standing Pilot Yes
Gas — Electronic Ignition Yes
Gas-fired Boilers Yesa
Gas — 750 Millivolt Heat OnlybYes
Oil-Fired Boilers Yesa
Oil-Fired Furnace Yes
Electric Furnace Yes
Electric Air Conditioning Yes
Baseboard Electric (120/240 line volt)cNo
Single Stage Heat Pump Yes
Multistage Heat Pumps/Multistage Equipment No