Honeywell RTHL3550 User Manual

10
Function
Description
Press the s or t button to Setting
1 select the type of system you
have in your home
0 Heating & cooling: Gas, oil or electric heating with
central air conditioning.
1 Heat pump: Outside compressor provides both heating
and cooling without backup or auxiliary heat.
2 Heating only: Gas, oil or electric heating without central
air conditioning.
3 Heating only with fan: Gas, oil or electric heating
without central air conditioning. (Use this setting if you
could turn the fan on and off with a fan switch on your
old thermostat.)
4 Cool only: Central air conditioning only.
5 Heat pump: Outside compressor provides both heating
and cooling with backup or auxiliary heating.
6 Heat/Cool Multiple Stages: Two heat stages (wires on
W and W2), two cooling stages (wires on Y and Y2).
7 Heat/Cool Multiple Stages: Two heat stages (wires on
W and W2), one cooling stage (wire on Y).
8 Heat/Cool Multiple Stages: One heat stage (wire on
W), two cooling stages (wires on Y and Y2).
2 select whether your
changeover valve is used in
heating or cooling
0 Cooling changeover valve: Use this setting if you
connected a wire labeled “O” to the O/B W wire terminal.
1 Heating changeover valve: Use this setting if you
connected a wire labeled “B” to the O/B W wire terminal.
MCR3337
7
Function Setting
MCR32600
Done Next
Advanced Installation
Enter System Setup
To enter system setup, press and hold
both the s and FAN buttons until the
display changes (approximately 5
seconds).
Changing Settings
1. Press the s or t button to change
the setting.
2. Press NEXT to advance to the next
function.
3. Press DONE to exit and save settings.

Honeywell RTHL3550 Specifications

General

Brand	Honeywell
Model	RTHL3550
Category	Thermostat
Language	English