Robertshaw RS9110 User manual

R S 9 110
Installation Manual

INSTALLATION MANUAL
Thermostat System Types Power Options
Table of Contents Page
Thank you for purchasing a Robertshaw®thermostat.
This manual will describe how to install and test the Robertshaw RS9110 thermostat.
Gas, Oil, or Electric Heat with Air Conditioning
Heat Pumps (without auxiliary or emergency heat)
Heat-Only, including for Floor and Wall-Furnace
Cool-Only
750 Millivolt Heating Systems
Installation Location 2
Thermostat Quick Reference 3
Wallplate Installation 4
Wiring 5-12
Installer Setup Menu 13-17
Mounting & Battery Installation 18
Programming 19-22
Specications 23
Battery Power
Hardwire (Common Wire)
IMPORTANT SAFETY INFORMATION
WARNING:
• Always turn off power at the main power
source by unscrewing fuse or switching
circuit breaker to the off position before
installing, removing, cleaning, or servicing
thermostat.
• Read all of the information in this manual
before installing or programming this
thermostat.
• This is a 24V AC low voltage thermostat. Do
not install on voltages higher than 30V AC.
• All wiring must conform to local and national
building and electrical codes and ordinances.
• 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.
1

INSTALLATION LOCATION
Install the thermostat 4 to 5 feet above the oor in an area with
good air circulation and average temperature.
For new installations, mount thermostat on an inside wall, 4-5 feet
above the oor. Do not install the thermostat in the following locations:
• Behind a Door
• In a Corner
• Near Air Vents
• In Direct Sunlight
• With an Outside Wall Behind the Thermostat
• Near any Heat or Steam Generating Fixtures
• Near any Concealed Pipes or Chimneys
Installation at these locations will affect thermostat operation.
2

Getting to know your thermostat
THERMOSTAT QUICK REFERENCE
3
Mon
Room
Menu
Set At
SLEEP
LCD Screen
Fan Switch
System Switch
Temperature Set-Point Buttons
User Buttons
Easy Change Battery Door
Tech Set Sun Mon Tue Wed Thu Fri Sat
Next
Step
Min Com On
Com Delay Heat
Set Time
Run Sched
Set Sched
Hold
Prev Step
Menu
Done WAKE RETURN
Cool Swing
Room
LEAVE
Hold
SLEEP
PM
Filter
Set At
Displays the user
selected set-point
temperature.
Days of the week
and time.
Indicates the
current room
temperature.
Programmable Time Periods:
This thermostat has 4
programmable time periods
per day.
Button Options
LCD
Hold: Is displayed
when thermostat
program is
overridden.
Low Battery
Indicator:
Replace batteries
when indicator is
shown.
NOTE: If these icons
are ashing, there
is a 5-minute delay
for compressor
protection.
System
Operation
Indicators:
The , or
icon will display
when the COOL,
HEAT, or (fan)
is on.
AM
FAN
AUTO COOL
SYSTEM
ON OFF HEAT
1
1
4
2
5
3
6

Mercury Notice:
This product is mercury-free. However,
if this product is replacing a control
which contains mercury, it needs to
be disposed of properly. Contact your
local waste management authority for
instructions regarding recycling and
proper disposal of the control.
Caution:
Electrical Hazard
Disconnect power before
installing this product. Failure
to do so can cause electric
shock or equipment damage.
WALLPLATE INSTALLATION
4
For a vertical mount,
put screws on the
top and bottom.
For a horizontal mount,
put screws on the left
and the right.
Vertical mount
Vertical mount
Horizontal mount
Horizontal mount

5
WIRING
1 Turn Off Power to Heating/Cooling System
2 Remove Old Thermostat
or
Heating/cooling system
power switch
Circuit breaker box
Remove old thermostat but leave wallplate with wires attached.
Do not remove wallplate
Terminal
designation

6
WIRING
3 Label Wires with Tags
Label the wires using the supplied wire labels
as you disconnect them.
Wiring Labels
Apply these wiring labels to each wire with the
appropriate terminal designation as you remove it from
the existing thermostat.
B B Y2 Y2
G
R
V/VR
X
AUX
G
R
V/VR
X
AUX
H
RC
W
X1
H
RC
W
X1
C C E E F F
L L O O P P
RH RH T T U U
W1 W1 W2 W2 W3 W3
X2 X2 Y Y Y1 Y1
4 Separate Wallplate from
New Thermostat
Remove wallplate from the new thermostat
and mount onto wall.
Wallplate
Wire Labels
Terminal designation
ELEC
GAS

WIRING
7
5 Mount Wallplate for New Thermostat
Mount the new wallplate using the included screws and anchors.
Drill 3/16-in. holes for drywall
Drill 3/16-in. holes for plaster

8
WIRING
6 Connect Wires
Simply match wire labels.
If labels do not match letters on the thermostat, check “Alternate Wiring (Conventional
Systems)” on page 9 and connect to terminal as shown (see notes, below).
SCREW
INSERT WIRES
AND TIGHTEN
SCREWS
Remove metal
jumper if you
haveboth RH
and RC wires

Alternate Wiring (Conventional Systems)
If labels do not match letters on the thermostat, check the chart below and connect to terminal as
shown here (See notes, below).
If wires will be connected to both RC and RH/R terminals, remove metal jumper.
If Cor Xwire is available then you can connect with Cterminal. If there is no Cor
Xwire then no need to connect with C terminal.
If you have a heat pump without auxiliary/backup heat connect Oor B, not both. If you
do not have a heat pump, do not connect B. Wrap bare end of wire with electrical tape.
Place a jumper (piece of wire) between Yand Wif you are using a heat pump without
auxiliary/backup heat.
WIRING
9
4

WIRING
Terminal Designations
WHeat relay
GFan relay
YCompressor relay
OHeat pump reversing valve energized in cooling
RC Transformer power for cooling
RH Transformer power for heating
BHeat pump reversing valve energized in heating
CCommon wire from system transformer
10
Notes:
RH & RC terminals
In a single-transformer system, leave the metal
jumper in place between the RH and RC. Remove
the metal jumper in two-transformer systems.
Heat pump systems
(With No Auxiliary or Emergency Heat)
If wiring to a heat pump, use a small piece of wire
(not supplied) to connect terminals W (Heat relay)
& Y (Compressor relay).
Common wire
The C (common wire) is optional when the
thermostat is powered by batteries.
Wire specications
Use 18- to 22-gauge thermostat wire.
Shielded wire is not required.

WIRING
4
5
3
2
1
6
11
Typical 1H/1C system: 1 transformer Typical 1H/1C system: 2 transformers
FAN RELAY
HEAT RELAY
COMPRESSOR
RELAY
(HOT)
REMOVE JUMPER
(HOT)
(HOT)
FAN RELAY
HEAT RELAY
COMPRESSOR
RELAY
Power supply.
Factory-installed jumper. Remove only when installing on 2-transformer systems.
Use either O or B terminals for reversing valve.
Use a small piece of wire (not supplied) to connect W and Y terminals.
Set fan operation switch to electric.
Optional 24 VAC common connection when thermostat is used in battery power mode.

WIRING
12
Typical 1H/1C heat pump system Typical heat-only system
Typical heat-only system with fan Typical cool-only system
FAN RELAY
COOL
REVERSING VALVE
HEAT
REVERSINGVALVE
COMPRESSOR
RELAY
(HOT)
HEAT RELAY
(HOT)
FAN RELAY
HEAT RELAY
(HOT)
FAN RELAY
COMPRESSOR
RELAY
(HOT)

INSTALLER SETUP MENU
Installer Setup Menu
This thermostat has an installer setup menu
for easy conguration. Follow the procedure
below to set up the thermostat to match the
specic heating/cooling system.
1. Press MENU
2. Press and hold TECH SET for 3 seconds.
3. Congure the installer options as
desired using the table below.
Use or to change settings and
NEW STEP or PREV STEP to move
from one option to another. Note: Only
press DONE when you want to exit the
Installer Setup options.
13

14
INSTALLER SETUP MENU
Filter Change
Reminder
Room
Temperature
Calibration
Minimum
Compressor
On-Time
This setting will ash FILT in
the display after the elapsed
run time to remind the user
to change the lter. The OFF
setting will disable this feature.
This setting allows the installer
to change the calibration of
the room temperature display
so that, for example, the
thermostat would read 72°F
instead of 70°F.
The installer can select the
minimum run time for the
compressor to help protect the
compressor from short-cycling.
The lter change reminder
can be adjusted from OFF
to 2000 hours in 50 hour
increments. Press the
second button from the top
left side of the thermostat
to display the current lter
elapsed run time.
The room temperature display
can be adjusted to read 3°
above or below the factory
calibrated temperature.
The minimum compressor
run time can be adjusted
from OFF to 3, 4, or 5
minutes. If 3, 4, or 5 is
selected, the compressor
will run for at least the
selected time before
turning off (although the
fan may continue to run
for a short time).
OFF
OFF
0
Next step
Prev step
Next step
Prev step
Next step
Prev step
Display Adjustment OptionsSettings Default

Settings Display Adjustment Options Default
15
INSTALLER SETUP MENU
Compressor
Short Cycle
Delay
Cooling
Dierential
Heating
Dierential
The compressor short cycle
delay setting will not allow the
compressor to be turned on for 5
minutes after it was last turned off
in order to protect the compressor.
The cooling differential is factory
preset at 0.5°. This means that
whenever the room temperature
heats by 0.5° full degree from the
temperature setting, the cooling
system will turn on. If the cooling
system turns on too often, increase
the temperature differential.
The heating differential is factory
preset at 0.4°. This means that
whenever the room temperature
cools by 0.4° from the temperature
setting, the heating system will
turn on. If the heating system
turns on too often, increase the
temperature differential.
The compressor short
cycle delay setting
can be removed by
selecting OFF.
ON
0.5
0.4
Prev step
Prev step
Prev step
Next Step
Next step
Next step
The cooling differential
setting is adjustable
from 0.2°F to 2°F.
The heating differential
setting is adjustable
from 0.2°F to 2°F.

Settings Display Adjustment Options Default
16
INSTALLER SETUP MENU
F or C
12 or 24
Hour Clock
Fan
Operation
Select F for Fahrenheit
temperature display or
select C for Celsius display.
Select a 12 or 24 hour
clock setting.
Select GAS or ELEC depending
on the type of furnace.
Use and to select
12 or 24 hour clock.
GAS - GS
or
ELEC - EL
F for Fahrenheit
C for Celsius
Prev step
Prev step
Next step
Next step
Prev step
Next step
F
12
GAS

Settings Display Adjustment Options Default
17
INSTALLER SETUP MENU
Program
Options 5d
This thermostat can be
congured to have 7 Day,
5+1+1 programming or be
non-programmable.
If 7 Day is selected, in Set Time
all seven days will need to be
programmed individually.
If 5+1+1 programming is
selected, in Set Time Monday–
Friday will be programmed
together and Saturday and
Sunday will need to be
programmed individually.
If 0d is selected, the thermostat
becomes non-programmable.
Use the and
to select 7d for 7 Day, 5d
for 5+1+1, or Od for
non-programmable.

MOUNTING & BATTERY INSTALLATION
Mounting Thermostat
Align the 4 tabs on the faceplate with
the corresponding slots on the back of
the thermostat, then push gently until
the thermostat snaps into place.
Battery Installation
Battery installation is optional if used with AC power (the Cterminal is connected).
During power outages, the batteries will save settings and power the display.
18
Insert 2 AAA
Alkaline batteries.
Mon
FAN
AUTO COOL
SYSTEM
ON HEAT
OFF
MENU
SLEEP
Room