Robertshaw RS4110 Manual de usuario

Thank you for purchasing a Robertshaw RS4000 thermostat. This user’s

manual will guide you through the setup of the RS4110 single stage and

the RS4220 two stage thermostats. The thermostat should already be

mounted and correctly wired. The default settings will enable the

thermostat to operate efficiently.

Features

• Pop-Up Wizard

• Automatic changeover

• Circulating Fan

• Worry-Free memory retention

• Easy change battery

• Large back lit display

• Filter change reminder

• Low battery indicator

• Fahrenheit and Celsius displays

• Dual power

• Adjustable 1st stage temperature differential: 0.5 F Degrees to 3.0 F

Degrees (0.5 C Degrees to 1.5 C Degrees)

• Accuracy within ±1 F Degree

• Universal staging on multi-stage units

• Automatic heating shutdown if temperature exceeds 99°F (37°C)

• Keypad security lockout

• User settable Hi and Lo temperature limits

352-00055-001

USERS MANUAL

Application

The Robertshaw 4000 family of thermostats is designed to control gas,

electric, oil, heat pump, and millivolt heating and electric cooling systems.

The RS4110 is a single stage thermostat while the RS4220 is a two-stage

thermostat.

The RS4000 thermostats are non-programmable and operate on a single

setpoint.

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 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.

• 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 heating

and cooling cycles on heat pumps.

Detailed mounting and wiring instructions are explained in the Installation

Manual.

Refer to the pop up wizard section in the installation manual for a

complete list of factory defaults and contractor settings.

Providing Power to the Thermostat

For wiring diagrams refer to the Installation Manual.

The thermostats will operate using 24V AC or two AA batteries. When

the two AA batteries are installed the thermostat will continue to run if

the 24V AC fails.

Installing or Changing the 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.

When the batteries are low the thermostat will enter a low battery mode.

Low battery mode has two levels.

• LEVEL 1: The low battery icon will be displayed. The

thermostat will continue to operate. Replace the

batteries as soon as possible

• LEVEL 2: The low battery icon will flash. If 24V AC is

present the thermostat will continue to operate if

the batteries are discharged or removed. If 24 VAC

is not present the thermostat runs on batteries only

and THE SYSTEM WILL NOT OPERATE. Replace batteries

immediately.

Replace batteries if leaving thermostat unattended for more than 30 days.

Display Map

The thermostat display will show information that is being used during

operation or programming. This illustration shows all of the display’s

possibilities with an explanation.

User Programmable Settings (Default)

During any program changes the display returns back to the operating

display if a button has not been pushed in 10 seconds.

The temperature scale is set to Fahrenheit.

Night light is off.

The first stage differential is 1F degree.

The second stage differential (RS4220) is 2F degrees.

Auto changeover deadband is 3F degrees.

Filter reminder length is off.

Temperature offset is 0 degrees.

The HI heat limit is 90°F (32°C).

The LO cool limit is 45°F (7°C)

The operation mode will be one of the following:

The fan setting is Auto.

The keypad has no password protection.

Refer to the pop up wizard section in the installation manual for a

complete list of factory defaults and contractor settings.

Emergency Heat

Your system may include Emergency Heat. The RS4220 thermostats have

an emergency heat capability for multi stage heat pump systems. To

determine if your system is capable of using emergency heat contact your

contractor. Use the button to enter the EMER mode. An E will be

displayed with the Heat symbol. This mode is used to bypass the heat

pump when it needs servicing or when it cannot keep up with the heat

demand.

Auto Changeover

Auto changeover is the ability of the thermostat to switch automatically

between heating settings and cooling settings. This is useful in Spring and

Fall when the days are warm and the nights are cool. In heat mode if the

room continues to warm beyond a set threshold the thermostat switches

to the cool mode and the associated cooling settings. The reverse is also

true.

As the room temperature changes, the thermostat will call for heating or

cooling as needed. To prevent the heating and cooling systems from

overriding each other, an automatic changeover deadband is used.

The deadband is the number of degrees that the room temperature can

move away from the active setpoint until heating or cooling is called for.

The larger the deadband the more the room temperature will vary.

Making Changes To The Programmed Settings

Any setting can be changed when it is flashing by pushing or

If a button is not pushed for 10 seconds the thermostat returns to

operation.

The following buttons can be accessed from the front panel.

LIGHT BAR: Turns on the display back light for 10 seconds.

FAN: Turns fan to AUTOMATIC, CIRCULATE or ON.

UP ARROW: Used during programming for changing the flashing item

upward.

DOWN ARROW: Used during programming for changing the flashing item

downward.

HEAT/COOL: Toggles through OFF, HEATING, COOLING, and AUTO. If using

an RS4220 and configured as HP then emergency heat is also displayed.

To Make Changes to the Settings

When and are pressed at the same time the thermostat will

display the current settings in order.

To change any setting:

When the setting is visible and flashing press the or

arrows to adjust the number on the screen.

SC = Scale in °F (Fahrenheit) or °C (Celsius)

bL = Display backlight always on ”Y” or off ”n”. Also called the nightlight

feature. If the thermostat has been wired to enable this feature it will

be displayed and the setting can be changed.

dF = The differential keeps the thermostat from turning on for small

changes in temperature. When in Fahrenheit the range is 0.5 to 3.0

Degrees. In Celsius the range is 0.5 to 1.5 Degrees. The differential is

factory set at 1.0 F Degree (0.5 C Degree). This means that whenever

the room temperature is more than 1 F Degree (0.5 C Degree)

different from the set temperature the system will turn on. If the

system is turning on too often, increase the differential setting. Note

that a larger differential will mean the room temperature changes

more before the system turns on.

d2 = SECOND STAGE DIFFERENTIAL = Operates with the first stage to

control a second heating/cooling system. This number will be added

to the first stage differential (See: Two Stage Systems). If the first

stage is running too often lower the settings. This will turn the

second stage on to help the first stage. If both stages are coming on

too often then increase this setting to delay the second stage.

dL=SECOND STAGE DELAY = This timer starts when the first stage turns

on. It resets when the first stage turns off. If this timer runs out the

second stage will turn on (See Two Stage Systems).

db = Deadband for auto changeover = the number of degrees that the

room temperature can move away from the active setpoint until

heating or cooling is called for. The larger the deadband the more

the room temperature will vary. This can be from heat to cool or cool

to heat.

Hi = High Heat Limit = This is the highest allowed heating setpoint. The

user will not be allowed to set a setpoint temperature higher than

this value.

Lo = Low Cool Limit = This is the lowest allowed cooling setpoint. The user

will not be allowed to set a setpoint temperature lower than this

value.

FL = Timer to remind the home owner to maintain the filter. Default setting

is off. The timer runs when the system is on and can be set at 0 (OFF)

or 1000 hours. When the time expires FL is displayed. Press any

button to reset and return to the normal display.

CY = Cycle Timer allows a compressor to rest between cycles. Can be set

from 0 to 5 minutes in 1 min increments.

WARNING: A wrong short cycle setting can

damage your equipment. This should only be

changed by a trained HVAC professional.

CL = Calibration offset. Changes the displayed temperature from the

actual temperature by +3 to -3 degrees in one degree increments.

Increasing the offset by +2 will cause the thermostat to display a

temperature that is 2 degrees higher than the actual room

temperature

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 2 digit password.

2. The digits are set using the and buttons to progress

through 00 to 99.

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 of 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.

2. Enter the digits for the password by pressing or to

progress through the numbers to the password.

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.

Two Stage Systems

A 2nd stage is a second or additional system that will provide extra

heating or cooling. When a 2nd stage is operating the display will show

the number 2 by the heat/cool icons.

A programmable temperature differential (default value is 2.0 F Degrees or

1.0 C Degree) and time delay (default value 20 minutes) control the 2nd

stage cycle.

Operation of the 2nd stage begins when:

• The room temperature changes from the setpoint by the sum of the

1st and 2nd stage differential settings.

• The first stage has been on for the specified delay time, but the

heating/cooling demand has not yet been met.

Backlit Display

This thermostat is equipped with a backlight to make viewing the display

easy. Press the button to activate the backlight. The backlight will

turn off after 10 seconds of inactivity. If the thermostat is wired to have

the backlight stay on all the time the night light can be turned on/off in

the settings menu.

Automatic Shut-Down

The thermostat will not display the room temperature if the temperature

goes higher than 99°F (37°C) or lower than 32°F (0°C).

The display will show HI or LO. The thermostat continues to control

heating and cooling and will resume the display of real time information

when the room temperature is back inside the display’s range.

Setting The Fan To ON, AUTO or CIRC

The fan has 3 settings: On, Auto, or Circ. Press the button to switch

among the three.

ON: The fan is on constantly. The status of the heating/cooling equipment

has no effect on the fan.

AUTO: Whenever there is a call for heating or cooling the fan will turn on.

CIRC: The fan operates in a cycle of on for 10 minutes and off for 20

minutes. Whenever there is a call for heating or cooling the cycle

stops and the fan responds to the call. The fan circulation resumes

when the call for heating or cooling is satisfied.

Troubleshooting

System fan does not operate

properly.

Move fan option switch to either gas

or electric, to match system (see

Switch Locations section).

Check F/C (Fahrenheit/Celsius) setting.

See Changing: Scale or Calibration

section.

Thermostat does not display

proper room temperature.

Thermostat does not turn on system. Check wiring (see Wiring

Diagrams section).

Increase temperature differential (see

Changing: Scale, Clock Mode,

Differential, Filter Hours, Short Cycle,

or Offset section).

If problems with thermostat cannot be resolved, call:

www.invensyscontrols.com

Technical Support: (800) 445-8299

System turns on too often.

Problem Action

Display Shows HI or LO and room tem-

perature is normal.

Call a licensed service person to

replace/repair.

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