Robertshaw RS4110 User manual

Thank you for purchasing a Robertshaw®thermostat. This manual will
describe how to install and test the Robertshaw single stage thermostats
RS4110, RS5110, RS6110, and two stage RS4220, RS5220, RS6220
thermostats. For complete operation instructions, refer to the Robertshaw
User Manual.
Use the model number to identify your thermostat.
These thermostats have three main parts:
A. The backplate – mounts to the wall and has wire connections.
B. The body – snaps to the backplate and contains the electronics and
programming buttons.
C. The cover – snaps to the top of the body and swings up to give access
to the programming buttons.
Recycling Thermostat
If this thermostat is replacing a thermostat that contains mercury in a sealed
tube, do not place your old thermostat in the garbage. Contact your local
waste management authority for instructions regarding proper disposal of the
thermostat. If you have any questions, call Robertshaw technical support at
1-800-445-8299.
1
RS4110
RS5110
RS6110
RS4220
RS5220
RS6220
R S X 1 1 0
4 = Non-Programmable
Value Series
5 = Programmable Value Series
with 5-2 Day Schedule
6= Programmable Value Series
with 7 Day Schedule and
Copy Feature
Application
0 = Standard Thermostat
Number of Cooling Stages
Number of Heating Stages
INSTALLATION MANUAL
RS4000 Series RS5000 Series RS6000 Series
352-00060-001 Rev. A

IMPORTANT SAFETY INFORMATION WARNING:
• Always turn off power at main fuse or circuit breaker panel before
installing, removing, cleaning, or servicing thermostat.
• Read all the information in this manual before installing this thermostat.
• This is a 24 VAC low-voltage thermostat. Do not install on voltages
higher than 30 VAC.
• All wiring must conform to local and national building and electrical
codes and ordinances.
• To take advantage of the Pop-Up Wizard, power should be applied when
the settings are ready to be entered. Fill in the chart in the Pop-Up
Wizard section before applying power.
• This is a dual powered thermostat that will operate on 24 VAC or batteries.
• Do not short (jumper) across terminals on the gas valve or at the
system control to test installation. This will damage the thermostat and
void the warranty.
• Do not connect ground to any terminal in this unit.
• This thermostat is configured with automatic compressor protection to
prevent damage because of short cycling or extended power outages.
Short cycle protection provides a delay between compressor cycles on
heat pumps.
Replacing Existing Thermostat
1. Turn off power to heating and cooling system.
2. Remove cover from old thermostat to expose wires.
3. Disconnect wires one at a time from existing terminals. Use enclosed
labels to mark existing wires. Refer to cross references in Table 1 if
existing wiring does not directly match the labels.
4. Remove existing thermostat base from wall.
Table 1
Old Terminal New Label Description
R, RH/R, V-VR or VR-R R/RH 24V AC Return
RC RC 24V AC Cooling Transformer
Y, Y1 or M Y1 1st Stage Cooling Circuit
F or G G Fan Control Relay
Y2 Y2 2nd Stage Cooling Circuit
W2 or W-U W2 2nd Stage Heating Control
C, X or B C 24V AC Transformer Common Side
W1 or W W1 1st Stage Heating Circuit
2

Installing the Robertshaw Thermostat Base
NOTE: For new installations, mount the thermostat on an inside wall, five feet
above the floor. Do not install behind a door, in a corner, near air vents,
in direct sunlight, or near any heat or steam generating fixtures.
Installation at these locations will affect thermostat operation.
1. Be certain power is off to the heating and cooling systems.
2. Remove the backplate by placing your finger through the wire opening.
Pull the backplate straight out from the body.
3. Place the backplate in position on the wall. Pull the wires through the
wire opening.
4. Hold the backplate level and mark the mounting holes on the wall.
5. Drill the marked holes using a 5 mm (3/16 in.) drill bit.
6. Tap in the wall anchors and secure the base to the wall with the
supplied screws.
NOTE: The thermostats are designed to also mount on a single gang
junction box.
Providing Power to the Thermostat
To take advantage of the Pop-Up Wizard, power should be applied when the
settings are ready to be entered. Fill in the chart in the Pop-Up Wizard
section before applying power.
These thermostats will run on either two AA batteries or 24 VAC. If the
common wire from the transformer is not available, the unit must be powered
by two AA batteries.
Thermostats with batteries and powered by 24 VAC will continue to function if
the 24 VAC fails.
Maintaining the Batteries
When the batteries are low, the thermostat will enter a low power mode. Low
battery mode has two levels.
• LEVEL 1: The low battery icon will be displayed.
• LEVEL 2: The low battery icon will flash indicating
that THE SYSTEM WILL NOT OPERATE.
3
Wiring Terminals
Mounting Holes
Wire Opening
RH/R
RC
C
L
G
O
B
Y1
W1
Y2
W2
E

System Switch Selection
The body of the thermostat has two switches on the backside. They are
accessible by removing the backplate from the body. The installer should set
these to match the system.
If the thermostat is controlling a heat pump system, set the first switch to
Heat Pump. The second switch can be left as is.
If the thermostat is controlling a non-heat pump system, set the first switch to
Non-Heat Pump. The second switch must be set to match the system as Gas
or Electric.
If Non-Heat Pump and Gas are selected, the heating system will control the fan.
If Non-Heat Pump and Electric are selected, the thermostat will control the fan.
Connecting the Wires
1. The wire ends should be stripped back 8 mm (5/16 in.).
2. Use the Wiring Diagrams and secure the wires into the terminal strip.
If replacing another thermostat, the wires should have been labeled.
Match the labels to the terminals. Tighten the screws.
3. Pull lightly on each wire to ensure the connection is secure.
NOTE: Nightlight feature is only enabled when the RH/R and C terminals
are connected.
4
Non-Heat
Pump Gas
Electric
Heat
Pump
Heat Pump or Non-Heat Pump Gasor Electric

5
Terminal Function
One Stage Models RS4110, RS5110 and RS6110
TERMINAL EQUIPMENT TO
CONNECTDESCRIPTION
C24V AC
Common Connection
For input of 24V AC common side of transformer.
Connect to provide always-on backlight/nightlight.
RH/R 24V AC
Hot Connection For input of 24V AC hot side of transformer.
RC 24V AC
Hot Connection
When cooling transformer is used for input of 24V
AC hot side of transformer.
Jumper from RH to RC must be removed.
Y1*
First stage
compressor
connection
Energizes on a call for first stage of cooling.
Energizes on a call for first stage of heating when
configured as a HP.
W1* First stage
heat connection
Energizes on a call for first stage of heating when
configured as a Non-HP.
GIndoor fan
connection
Energizes with Y1 and Y2.
Energizes with W1 and W2 if the Gas/Elec switch is
set to electric.
Energizes when fan is switched to ON.
OEnergizes for heat pump cool reversing valve.
BEnergizes for heat pump heat reversing valve.
* This thermostat can be used as a heat-only or cool-only thermostat. Therefore, it is not
always necessary to use both W1 and Y1.
Two Stage Models RS4220, RS5220 and RS6220
TERMINAL EQUIPMENT TO
CONNECTDESCRIPTION
L
24V AC
Compressor Fault
Output
For input of fault signal from a compressor.
Y2
Second stage
cooling
connection.
Energizes on a call for second stage cooling (aux.).
W2 Second stage
heat connection Energizes on a call for second stage heating (aux.).
EEmergency Heat
Connection Energizes on a call for emergency heat.

6
Compressor
Contactor
Reversing
Valve
Fan
Relay
G
O
B
Y1
W1
Y2
W2
E
RH/R
RC
C
L
Transformer
Hot
120 Vac
Remove jumper if
separate cooling
transformer is
present.
When used as
Heat Pump with Cool Active Reversing Valve With Battery
Make certain the HP switch isin the HP position.
24 Vac
Compressor
Fault Output
(24VAC)
Second
Stage Cool
Second
Stage Heat
Emer Heat
Not used
for RS4110,
RS5110 and
RS6110
Not used
for RS4110,
RS5110 and
RS6110
Compressor
Contactor
Reversing
Valve
Fan
Relay
G
O
B
Y1
W1
Y2
W2
E
RH/R
RC
C
L
Transformer
Hot
120 Vac
Remove jumper if
separate cooling
transformer is
present.
When used as
Heat Pump with Heat Active Reversing Valve With Battery
Make certain the HP switch isin the HP position.
24 Vac
Compressor
Fault Output
(24VAC)
Second
Stage Cool
Second
Stage Heat
Emer Heat
Not used
for RS4110,
RS5110 and
RS6110
Not used
for RS4110,
RS5110 and
RS6110
Compressor
Contactor
Fan
Relay
G
O
B
Y1
W1
Y2
W2
E
RH/R
RC
C
L
Heat
Transformer
Hot
120 Vac
Remove jumper if
separate cooling
transformer is
present.
When used as
Non-Heat Pump With Battery
Make certain the HP switch isin the Non-HP position.
24 Vac
Second
Stage Cool
Second
Stage Heat
First Stage
Heat
Hot
120 Vac
24 Vac
Cooling
Transformer
Cooling transformer isnot required
Not used
for RS4110,
RS5110 and
RS6110
Not used
for RS4110,
RS5110 and
RS6110
Wiring Diagrams

7
Compressor
Contactor
Fan
Relay
G
O
B
Y1
W1
Y2
W2
E
RH/R
RC
C
L
Transformer
Hot
120 Vac
Remove jumper if
separate cooling
transformer is
present.
When used as
Non-Heat Pump With Battery Backup
Make certain the HP switch isin the Non-HP position.
24 Vac
Second
Stage Cool
Second
Stage Heat
First Stage
Heat
Not used
for RS4110,
RS5110 and
RS6110
Not used
for RS4110,
RS5110 and
RS6110
Compressor
Contactor
Reversing
Valve
Fan
Relay
G
O
B
Y1
W1
Y2
W2
E
RH/R
RC
C
L
Transformer
Hot
120 Vac
Remove jumper if
separate cooling
transformer is
present.
When used as
Heat Pump with Cool Active Reversing Valve With Battery Backup
Make certain the HP switch isin the HP position.
24 Vac
Compressor
Fault Output
(24VAC)
Second
Stage Cool
Second
Stage Heat
Emer Heat
Not used
for RS4110,
RS5110 and
RS6110
Not used for
RS4110, RS5110
and RS6110
Compressor
Contactor
Reversing
Valve
Fan
Relay
G
O
B
Y1
W1
Y2
W2
E
RH/R
RC
C
L
Transformer
Hot
120 Vac
Remove jumper if
separate cooling
transformer is
present.
When used as
Heat Pump with Heat Active Reversing Valve With Battery Backup
Make certain the HP switch isin the HP position.
24 Vac
Compressor
Fault Output
(24VAC)
Second
Stage Cool
Second
Stage Heat
Emer Heat
Not used
for RS4110,
RS5110 and
RS6110
Not used
for RS4110,
RS5110 and
RS6110
Wiring Diagrams

Applying Power
Before applying power, fill in the chart in the Pop-Up Wizard section of
this manual.
When 24V AC power or battery power is first applied to the thermostat, the
display will show the model number followed by the Pop-Up Wizard.
The thermostat will start normal operation following the Pop-Up Wizard.
Power is applied to the thermostat two ways:
1. Installing the batteries.
2. Not installing the batteries and connecting the thermostat body to a
backplate that has the C terminal connected and 24V AC present.
Note: A thermostat powered by 24V AC will use the batteries as backup
power if the 24V AC fails.
Installing Batteries
To remove the battery compartment
gently squeeze the ribbed edges on
both sides.
The battery compartment will pull down
from the thermostat body and will
detach. Install two AA batteries
following the polarity as shown inside
the compartment. Place compartment
back into the thermostat.
Connecting The Body
Attach the thermostat body to the backplate by holding it directly in front of
the backplate. The edges will match and the wiring connections will make
contact. Push the body in until it snaps in place.
8

Pop-Up Wizard
The Wizard routine will display factory default settings. Each setting will
display for ten seconds. Use the or buttons to change the setting.
Settings that are not changed will operate with the values that are displayed.
To fast forward through the Wizard, press Edit Schedule. The Wizard can be
exited by pressing Start/Stop Schedule. This will save the settings and place
the thermostat into operation.
Use this chart to write down the desired settings before applying power.
Displayed Details Default Change To
SCAL (choose F° or C°) °F _______
CLOC* (choose 12 or 24 hour) 12 _______
LITE (1 = always on, 0 = off) 0 _______
DIFF (differential, set between 0.5 to 3.0 F°
or 0.5 to 1.5 C°) 1F° _______
DIF2** (2nd stage differential,
added to first stage differential) 2F° _______
DLY2** (2nd stage delay, in minutes) 20 _______
DEDB (auto changeover deadband
in degrees) 3F° _______
HI (heat setting limit in degrees) 90°F _______
LO (cool setting limit in degrees) 45°F _______
VAC HEAT* (vacation heat setpoint in degrees) 62°F _______
VAC COOL* (vacation cool setpoint in degrees) 85°F _______
CHECK*** (check filter timer in hours) OFF _______
CYCL (compressor short cycle delay in minutes) 5 _______
CAL (calibration offset in degrees) 0 _______
* Not displayed on RS4000 and RS6000 models.
** Will not be displayed if the thermostat is single stage.
*** On RS4000 models, the Filter Check feature can be turned to OFF (0) or ON (1).
The number of hours cannot be set.
After the Wizard has configured the thermostat, the settings can be edited by
pressing and simultaneously. This will allow you to change settings.
Factory settings that have not been changed will use the default settings
for operation.
Additional Default Settings for RS4000
The RS4110 and RS4220 are single setpoint non-programmable (no clock)
thermostats and do not have a schedule.
Default settings that are not set in the Pop-Up Wizard are:
The fan setting is auto.
The setpoint is 70°F.
The keypad has no password protection.
9

Default EnergyStar™Settings for RS5000 and RS6000
The RS5110, RS5220, RS6110 and RS6220 are programmable thermostats
and are preprogrammed with a schedule that is recommended by
EnergyStar™. The schedule is designed to lower energy costs year-round.
Setting Time and Day for RS5110, RS5220, RS6110
and RS6220
To adjust the time and day settings press the SET TIME button. The hour will
flash. To change the settings:
1. Use the and buttons to change the flashing number.
2. Press the SET TIME button to move through hours, minutes and days
of week.
3. Make changes as needed. They will be saved automatically.
NOTE: THE THERMOSTAT WILL NOT CORRECT FOR
DAYLIGHT SAVING TIME.
Installation Test Utility
WARNING: The installation test procedures can damage the
heating/cooling equipment if used incorrectly. These procedures should only
be performed by trained HVAC personnel.
The following instructions may be used to test the heating/cooling system for
correct function.
To enter the test mode press and hold and for ten seconds.
While in test mode, only the , and Start/Stop Schedule buttons
are active.
Short Cycle protection is disabled when using the test utility.
Push the Start/Stop schedule button at any time to exit test mode.
In the test mode:
Press to force the fan on or off. The fan icon will rotate. If the selector
switches are set for NON-HP and GAS, the fan icon will not be displayed.
Pressing repeatedly will allow testing of the system modes. See
following tables. The display will show appropriate animated icons.
10
EnergyStar™ Temperature Settings
Winter (Heating) Summer (Cooling)
Morning (6:00 am) 70°F (21°C) 78°F (25°C)
Day (8:00 am) 62°F (17°C) 85°F (29°C)
Evening (6:00 pm) 70°F (21°C) 78°F (25°C)
Night (10:00 pm) 62°F (17°C) 82°F (28°C)

Press to immediately force the heating or cooling system on or off.
Press to also step through the second stages (2 stage models).
NOTE: When a heat stage is active the fan responds as dictated by the HP
selection and the gas/electric switch.
Press Start/Stop Schedule to exit the test utility.
The display will now show the day, the setpoint,
fan setting and off.
Refer to the User Manual to change day, time and schedule.
The Thermostat is now ready to begin operation.
The thermostat will be in the OFF (default) mode at start up.
The following sections will explain how to select the mode of operation and
how to protect the settings.
11
Two Stage Models RS4220, RS5220, and RS6220
Conventional (Non-HP) Heat Pump (HP)
Demand Terminal Display Terminal Display
First Stage Cool Y1 + G Y1 + G + O
Second Stage Cool Y1 + Y2 + G 2Y1 + Y2 + G + O 2
First Stage Heat W1 + G* *Y1 + G + B
Second Stage Heat W1 + W2 + G* 2 * Y1 + W2 +G + B 2 *
Emergency Heat N/A E + G E
* G, will be off (not displayed) for Non-HP with Gas
One Stage Models RS4110, RS5110, and RS6110
Conventional (Non-HP) Heat Pump (HP)
Demand Terminal Display Terminal Display
First Stage Cool Y1 + G Y1 + G + O
First Stage Heat W1 + G* *Y1 + G*
* G, will be off (not displayed) for Non-HP with Gas.

Setting the Mode
Press the button to cycle through the available modes.
Off
Heat
Cool
Emergency Heat (2 stage Heat Pump units)
Automatic changeover
Setting Mode to Emergency Heat
The RS4220, RS5220 and RS6220 thermostats have an emergency heat
capability for heat pump systems. Confirm that the system has emergency
heat available. Use the button to enter the EMER mode.
An Ewill be displayed with the heat symbol . Use emergency heat to turn
off the heat pump and turn on a secondary heating source. This mode is used
to bypass the heat pump when it needs servicing or when it cannot keep up
with the heat demand.
Setting Mode to Automatic Changeover
When auto changeover is active the letter Ais displayed next to the and .
Changing from heat-to-cool or cool-to-heat is automatic. As the room
temperature changes, the thermostat will call for heating or cooling as
needed. The display will flash the heat or cool symbol to show which
system is active.
Security Lockout to Protect the Settings
The buttons on the front of the thermostat can be locked with a password.
To create a password:
1. Press the and buttons at the same time and hold them in for
5 seconds.
You will be asked for a 4 digit password (the RS4110 and RS4220
thermostats use 2 digits).
2. Each digit is set using the and buttons. Press the to
move to the next digit. Press to move back.
3. The password is saved after 10 seconds or by pressing and
at the same time.
All the front buttons are now locked out until the password is entered.
Pressing any button will cause to flash.
To unlock the buttons:
1. Push and hold the and buttons for 5 seconds until the
request for password is displayed.
12

2. Enter the digits for the password by pressing the and buttons.
Press the to move to the next digit. Press to move back.
If the wrong password is entered the display will flash NO for 5 seconds
then return to normal.
3. Press and when the correct password is displayed.
The buttons will be unlocked.
Once the security has been disabled, a password needs to be re-created to
protect the settings.
Thermostat Specifications
Operating Voltage 18-30 VAC
Maximum Load Current 1 Amp Max per Output Terminal
4 Amp Total Load
Output Type Latching Relays
Batteries 2 AA Alkaline in Series
Battery Life 2 Years Typical
Ambient Operating Temperature 14°F (-10°C) to 122°F (60°C)
Storage Temperature -4°F (-20°C) to 140°F (60°C)
Troubleshooting
If problems with thermostat cannot be resolved, contact:
www.invensyscontrols.com
or
Technical Support: [phone]
Monday-Friday 7:30 AM - 5:30 PM CST
13
Problem Action
Thermostat does not turn on system. Check wiring
(see Wiring Diagrams section).
System turns on too often. Increase temperature differential
(see Pop-Up Wizard section).
System fan does not operate
properly.
Move fan option switch to either gas
or electric, to match system (see
System Switch Selection section).
Thermostat does not display
proper room temperature.
Check F/C (Fahrenheit/Celsius)
setting (see Pop-Up Wizard section).
Display shows HI or LO and room
temperature is normal.
Call a licensed service person to
replace/repair.

Five Year Limited Warranty
Invensys Controls warrants to the original contractor installer, or to the original
consumer user, each new Robertshaw thermostat to be free from defects in
materials and workmanship under normal use and service for a period of five
(5) years from date of purchase. This warranty and our liability does not apply
to batteries or merchandise that has been damaged by misuse, neglect,
mishandling, alterations, improper installation, or use in a way other than in
accordance with Invensys Controls recommendations and instructions.
Invensys Controls agrees to repair or replace at its option any thermostat
under warranty provided it is returned within the warranty period, postage
prepaid, with proof of the date of purchase. Cost of thermostat removal or
reinstallation is not the responsibility of Invensys Controls.
Repair or replacement as provided under this warranty is the exclusive
remedy of the consumer. Invensys Controls shall not be liable for any
incidental or consequential damages for breach of any express or implied
warranty on this product, or under any other theory of liability. Except to the
extent prohibited by applicable law, any implied warranty of merchantability or
fitness for a particular purpose on this product is limited to the duration of this
warranty.
Some states do not allow the exclusion or limitation of incidental or
consequential damages, or allow limitations on how long an implied warranty
lasts, so the above limitations or exclusions may not apply to you. This
warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
For warranty returns, send thermostat, shipping prepaid to:
Invensys Controls
Warranty Claims Department
515 S. Promenade
Corona, CA 91719
In Canada:
Invensys Controls
3505 Laird Road Unit #14
Mississauga, Ontario L5L 5Y7 Canada
Attn: Warranty Department
14
352-00060-001 Rev. A
515 South Promenade Avenue
Corona, CA 92879-1736
United States of America
www.invensyscontrols.com
©2007 Invensys Controls 8/07