Robertshaw RS5220C Manuel utilisateur

Thank you for purchasing a Robertshaw RS5220C programmable

thermostat. This user’s manual will guide you through the setup of the

RS5220 two stage thermostat. The thermostat should already be

mounted and correctly wired. The default settings will enable the

thermostat to operate efficiently. Before making any changes to the

schedule read the section on Default Settings.

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

• EnergyStar™ compliant

• Dual power

• Adjustable 1st stage temperature differential: 0.5 °F to 3.0 °F (0.5 °C

to 1.5 °C)

• Accuracy within ±1 °F

• Universal staging on multi-stage units

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

• Keypad security lockout

• 4 events per day for heating and cooling

• 5-2 day scheduling

• User settable Hi and Lo temperature limits

• Vacation setpoint override

RS5220C

352-00059-001 Rev B

USERS MANUAL

Application

The Robertshaw RS5220C thermostat is designed to control gas, electric,

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

RS5220C is a two stage thermostat.

The RS5220C thermostats use 5-2 programming. This means the 5

weekdays will operate on one schedule and the 2 weekend days will

operate on a second schedule

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 24V AC

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.

The clock will continue to run for 10 minutes when the batteries

are removed.

Display Description

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.

1. Event Names (used for editing schedule).

2. Day is displayed on Idle screen. Also used to display day ranges

when editing the schedule (e.g., SAT SUN for weekend).

3. Used with clock to display hold duration (e.g., FOR 2h).

4. On when running a schedule.

5. Used with setpoint.

6. Used along with clock for service reminders (e.g., CHECK HP).

7. Used for time, current setpoint, and some configuration data (e.g.,

filter hours).

8. HVAC mode and status. Icons blink when active. A is for Auto, 2 is

for second stage, E is for emergency.

9. Indicates when security is active.

10. Low battery indicator.

11. Displayed when in vacation hold.

12. Used for ambient temperature and configuration data (e.g., first

stage differential, F or C, etc.).

13. Fan status (rotates when active).

14. Fan mode selected by pressing FAN button.

12 11

Schedule Settings – Defaults

This thermostat is preprogrammed with a schedule that is recommended

by EnergyStar™. The schedule is designed to lower energy costs

year-round.

The default schedule settings are:

Time Cooling °F Heating °F

Morn 6:00 am 78 70

Day 8:00 am 85 62

Eve 6:00 pm 78 70

Nite 10:00 pm 82 62

User Settings – Defaults

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 on.

The first stage differential is 1 °F.

The second stage differential is 2 °F.

The second stage delay is 20 minutes.

Auto changeover is enabled.

Auto changeover deadband is 3 °F.

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 vacation temperature settings are set at: heating 60°F, cooling 85 °F.

The operation mode is OFF.

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 RS5220C 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 auto changeover deadband is used.

The deadband is the minimum temperature swing before changing from

heating to cooling or vice versa. The larger the deadband the more the

room temperature will vary.

Operating the Thermostat

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.

START/STOP SCHEDULE: Switches between running a schedule and

manual (permanent override). Cancels a temporary override.

EDIT SCHEDULE: Use this button to start editing the schedule. Push

repeatedly to move through the selections.

VACATION: Used to set a temporary setpoint for a number of days.

SET TIME: Sequences through the hour, minute and day.

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

FAN: Turns fan to AUTOMATIC, CIRCULATE or ON.

UP ARROW: Raises the setpoint or increases flashing item.

DOWN ARROW: Lowers the setpoint or decreases flashing item.

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

If configured as HP then emergency heat is also displayed.

Setting Time and Day

To adjust the time and day settings press the SET TIME button. The hour

will flash. If a button is not pushed in 10 seconds the thermostat returns

to operation. To change the settings:

1. Use the and buttons to change the flashing number.

2. Press the SET TIME button to move through hour, minutes and day

of week.

3. Make changes as needed. They will be saved automatically.

NOTE: The thermostat will not correct for Daylight Saving Time.

The thermostat will now function properly using the default schedule.

Changing the Schedule Settings

This thermostat can operate using a single setpoint by overriding the

schedules. If you will be using this thermostat for single setpoint

operation skip to Overriding the Schedule.

The chart below represents one day’s programming schedule. To make

programming your thermostat quicker and easier, recreate the table

for each day of the week on a separate piece of paper, and refer to it

while programming.

Press START/STOP SCHEDULE at any time to exit and save your settings.

Push START/STOP SCHEDULE. The display will show a day flashing at

the top. If a button is not pushed in 30 seconds the thermostat returns

to normal operation.

Use the or to change the hour of the start time if desired.

Push EDIT SCHEDULE to move to minutes.

Use the or to change the minutes of the start time if desired.

Push EDIT SCHEDULE to move to the heat or cool temperature setting.

Use the or to change the temperature setpoint.

Push EDIT SCHEDULE to move to the other setpoint.

Use or to change the temperature setpoint.

NOTE: Pressing will switch between cooling and heating setpoints.

Pressing Set Time button will switch back to the event time.

NOTE: The heating and cooling setpoints CANNOT be entered as

crossed. That is, the cooling setpoint CANNOT BE lower than

the heating setpoint.

Push EDIT SCHEDULE and repeat this process for the remaining

three settings.

Time Cool Heat

Morning

Day

Evening

Nite

After the weekend schedule is complete, the display will show the

weekend schedule. Continue the same steps to program the four

weekend setting

When finished press START/STOP SCHEDULE or wait 30 seconds and

the thermostat will return to operation.

Changing the User 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.

To exit the changes and save:

Press START/STOP SCHEDULE. The thermostat will return

to operation.

SCAL = Scale in °F (Fahrenheit) or °C (Celsius).

CLOC = Set clock to 12 or 24 hour format.

LITE = Display backlight always on ”y” or off ”n”. Also called the

nightlight feature. If the thermostat has been wired with 24V AC

(R and C terminals) then this feature will be displayed and the

setting can be changed.

DIFF = 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 (0.5 °C). This means that

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

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.

DIF2 = 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.

DLY2 = 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).

Auto changeover enable = Makes the auto changeover mode available.

When chosen, the thermostat can automatically switch between

heating and cooling. Note that the High and Low setpoint limits

are not enforced in auto changeover mode.

DEDB = 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 schedule setpoint or override

temperature higher than this value.

NOTE: High Heat Limit is not enforced in auto changover mode.

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

user will not be allowed to set a schedule setpoint or override

temperature lower than this value.

NOTE: Low Cool Limit is not enforced in auto changover mode.

VAC HEAT = Vacation Heat Setpoint = This is the temperature setpoint

for the heating system when a vacation override has been

made active.

VAC COOL = Vacation Cool Setpoint = This is the temperature setpoint

for the cooling system when a vacation override has been

made active.

CHECK = Timer to remind the home owner to maintain the filter. Default

setting is off. The timer runs when the system is on. It can be

set at 0 (OFF) or up to 9900 hours. When the time expires

CHECK FLTR is displayed. Press the and buttons to

restart the filter timer.

CYCL = 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.

CAL = 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

Creating a Password – 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.

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 5 seconds.

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.

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