Owner's Manual

ManualsBrandsRobertshaw ManualsThermostatsRobertshaw RS3110 Series

Congratulations!

Your new thermostat will provide years of reliable service.

By saving energy, your thermostat will pay for itself during

its first season of use. Thank you for buying our product!

Please read this manual for complete instructions on

installing and operating your thermostat. If you require

further assistance, please feel free to contact us.

IMPORTANT INFORMATION

1. This thermostat is designed to work on the following

systems:

• Gas – Standing Pilot • Oil – Fired Furnace

• Gas – Electronic Ignition • Single Stage Heat Pumps –

with no auxiliary heat

• Gas – Fired Boilers • Electric Air Conditioning

• Gas – Millivolt Systems • Electric Furnace

• Oil – Fired Boilers

This thermostat will NOT control multi-stage heat pumps

or 110/220V baseboard electric heating systems.

2. Temperature Range

This thermostat can be programmed between 45ºF

and 95ºF (7ºC and 35ºC). However, it will display room

temperatures from 30ºF to 99ºF (0ºC and 37ºC). HI will be

displayed if the temperature is higher than 99ºF (37ºC), and

LO will be displayed if the temperature is lower than 30ºF

(0ºC).

This thermostat will automatically shut down in Heat

mode if the temperature rises above 95ºF (35ºC), and will

automatically shut down in Cool mode if the temperature

drops below 45ºF (7ºC).

3. Compressor Protection

After shutting off the cooling system, this thermostat has

a 4 minute delay before it can be restarted. This feature

will prevent damage to your compressor caused by rapid

cycling. It does not prevent a rapid compressor restart due

to short power outages.

4. Battery Warning

Two fresh AA alkaline batteries should provide over one

year of service. When the batteries need to be replaced.

The low battery indicator will flash on the display. When you

see this message, install new alkaline batteries. You have

approximately 1 minute to change the batteries and keep

the thermostat’s clock and program settings. Once the

batteries have become too low to ensure proper operation,

your system will be turned off, and the display will be

cleared except for flashing Low Battery Indicator on the

LCD display.

CAUTION: When only the Low Battery icon

flashes on the display, the thermostat is shut

down, and your system will no longer operate.

In this condition, there is no temperature control.

NOTE: The backlight will not function when the thermostat

is in low battery condition.

NOTE: If you plan to be away from the premises over 30

days, we recommend that you replace the old batteries with

new alkaline batteries prior to leaving.

FEATURES

Structure of thermostat and explanation of the keypads

OPERATION

Setting Day and Time

• The LCD will show this information

when batteries are first installed. The

temperature will update after a few

seconds.

• During time and day setting mode, the tempera-

ture and program displays will go blank.

Refer to the Steps below.

STEP 1:

• Press to enter time and day setting

mode. The current hour and the

AM/PM indicator will be flashing.

• Press up or down to change the hour

to the current hour.

Note the AM/PM indicator, as the display will change at

12AM and 12PM.

STEP 2:

• Press again to change from hour

setting to minute setting. The current

minute will be flashing.

• Press up or down to change the

minute to the current minute.

STEP 3:

• Press again to change from minute

setting to day setting. The current day

will be flashing.

• Press up or down to change the day

to the current day.

STEP 4:

• Press again to change back to the

normal display.

NOTE: You may press at any time during day

and time setting to return to the normal display.

12Hr. / 24 Hr. Time Format

Your thermostat is set from the factory in normal 12

(AM/PM) time format. To change to 24 hour (military) time,

press during time and day setting mode to toggle

between the 12 hour and 24 hour formats. The AM / PM

indicator will not be displayed in 24 hour mode. Both the

current time and all programs will automatically change

to the selected format.

PROGRAMMING

The following time and temperature settings are

pre-programmed into the thermostat:

• All 7 days of the week have the same default programs.

Personal Program Schedule

• You can revise the factory programs to match your own

schedule. Use this Personal Program Schedule to deter-

mine which times and temperature settings match your

comfort and energy saving requirements. Use a pencil

so you can revise your records each time you change

your program settings.

Revising Programs

• Familiarize yourself with manually changing programs, so

that you can easily modify the programs as your comfort

needs change. Follow the steps below to change the

program times and temperature.

NOTE:

1) The program time can be set in 10-minute increments.

2) The program temperature can be set in increments of 1ºF

(1ºC).

3) After 15 seconds without a key press, the thermostat

will return to normal display mode.

4) When setting the program time, note the AM / PM

indicator.

STEP 1:

• Slide the System Switch to the HEAT

or COOL position to program the

corresponding system.

NOTE: if the System Switch is in the OFF posi-

tion, the last position used will be programmed.

STEP 2:

• Press to enter program mode. HEAT

or COOL will be displayed on the

LCD.

STEP 3:

• The program hour and AM or PM indicator will flash.

Press to change the hour.

STEP 4:

• Press again to change to the minute

position. The current minute will flash.

• Press to change the minute.

STEP 5:

• Press again to change to the program

temperature. The current program will

flash.

• Press to change the temperature.

STEP 6:

• Press again to move to the next program number.

• Repeat Step 3 through 5 to change the remaining

weekday and weekend programs. (There are a

total of 8 programs.)

• After cycling through all 8 programs, press

again to return the display to normal.

• Press at any time to exit the program mode.

Reviewing Programs

To review your program settings, press repeatedly to

cycle through the programs. You also can make changes at

any time.

System Selector Switch

The System Selector switch on the front of the thermostat

determines the operating mode of the thermostat. You may

select COOL, OFF, or HEAT.

NOTE: Anytime you install or remove the thermostat from

the wallplate, slide the System Selector to the OFF position

to prevent rapid system On-Off.

Fan Switch

The fan switch should normally be set in the

AUTO position. The fan will be turned on during

normal operation of your system. In a normal gas

or oil furnace, the fan will be turned on by your furnace after

its warm-up delay. For electric heat, air conditioning, and

heat pump operation, the fan will turn on with the system.

To run the fan continuously, slide the Fan switch to the ON

position.

Temporary Manual Override

To temporarily change the current set

temperature without affecting your program:

• Press and hold for about 1 second to

enter Manual Override mode. When

display flashes, you can release the key.

• Press again to change to your desired set

temperature. Hold the key for 2 seconds to

fast-advance set temperature.

• Press to return to normal mode, or wait 5 seconds for

it to return automatically.

• The current program number will flash to signify the

temporary override.

• At the next program change time, the temporary override

is cancelled, and the next program temperature becomes

the setpoint temperature.

• Press, then press again. This will

return the set temperature to the

current program set temperature.

Permanent Override or a Designated Day Override

To hold your manual override for vacation

or until a designated day.

• Press to make the current program

temperature the HOLD temperature. HOLD

will be displayed on the LCD, and the program

number will disappear.

• Follow the Temporary Manual Override

instructions above to change the

Permanent Manual Override temperature.

• You can confirm the held set temperature

by pressing for less than 1 second.

Programmable Thermostat

Owners Manual

Model: RS3110 Series

Temperature in Fº (Cº)

Program Number Time Heat Cool

1 6:00 am 68ºF(20ºC) 78ºF(26ºC)

2 8:00 am 60ºF(16ºC) 85ºF(29ºC)

3 4:00 pm 68ºF(20ºC) 78ºF(26ºC)

4 10:00 pm 60ºF(16ºC) 82ºF(28ºC)

Heating

Day Program 1 Program 2 Program 3 Program 4

Monday – Time Time Time Time

Friday Temp Temp Temp Temp

Saturday – Time Time Time Time

Sunday Temp Temp Temp Temp

Cooling

Day Program 1 Program 2 Program 3 Program 4

Monday – Time Time Time Time

Friday Temp Temp Temp Temp

Saturday – Time Time Time Time

Sunday Temp Temp Temp Temp

352-00021-003 Rev A

Summary of content (3 pages)

PAGE 1
352-00021-003 Rev A OPERATION STEP 1: Setting Day and Time • Slide the System Switch to the HEAT or COOL position to program the corresponding system. • The LCD will show this information when batteries are first installed. The temperature will update after a few seconds. • During time and day setting mode, the temperature and program displays will go blank.
PAGE 2
• Press again. Hold day will be displayed on the LCD and the clock will disappear • Press day key to add override days. Press Program key to reduce override days. • Follow the Temporary / Designated Day Override instructions above to change the Permanent Manual Override temperature. To End Override: • Under Permanent Override press hold/return key twice. Under a Designated Day Override press the hold once. The thermostat will return to the current program, and the HOLD display will be canceled.
PAGE 3
Table A If the code letter on your existing Thermostat is then mark the wire with label shown and connect to thermostat terminal shown • Insert the bottom tabs on the thermostat body into the slots at the bottom of the wallplate. Press the top of the thermostat body to snap it into the wallplate. Refer to Figure 6. TROUBLESHOOTING Problem Solution No display 1. Check batteries connections and batteries. NOTE: Do not force the thermostat onto the wallplate, as the terminal pins may be damaged.