Robertshaw RS4220C Manuals

1 RS4000C Series RS5220C RS6320C RS4220C RS4320C RS5220C RS6320C 352-00061-001 Rev B INSTALLATION MANUAL STEP 1 Pull backplate straight out to remove STEP 2 Install backplate on the wall and wire STEP 3 Push front onto backplate STEP 4 Remove tape on cover STEP 5 Rotate cover up and remove battery tray STEP 6 Place batteries in tray and place in thermostat QUICK START 2 Thank you for purchasing a Robertshaw® thermostat. This manual will describe how to install and test the Robertshaw two stage RS4220C, RS5220C, and three stage* RS4320C, RS6320C 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 1-844-362-4822. 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 * Three stages of heating available for heat pump applications only. 3 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. • This is a dual powered thermostat that will operate on 24V AC 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 C, X or B C 24V AC Transformer Common Side F or G G Fan Control Relay Y, Y1 or M Y1 1st Stage Cooling Circuit W1 or W W1 1st Stage Heating Circuit Y2 Y2 2nd Stage Cooling Circuit W2 or W-U W2 2nd Stage Heating Control W3 E 3rd Stage Heating Control E E Emergency Heating Control 4 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 24V AC. 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 24V AC will continue to function if the 24V AC 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. Wiring Terminals Mounting Holes Wire Opening RH/R RC C L G O B Y1 W1 Y2 W2 E

Thank you for purchasing a Robertshaw RS4000C thermostat. This user’s manual will guide you through the setup of the RS4220C two stage, and the RS4320C three 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 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 • User settable Hi and Lo temperature limits 1 RS4220C RS4320C 352-00058-001 Rev B USERS MANUAL * Three stage heating available for heat pump applications only. Application The Robertshaw RS4000C family of thermostats is designed to control gas, electric, oil, heat pump, and millivolt heating and electric cooling systems. The RS4220C is a two stage thermostat. The RS4320C can support three stages of heating and two stages of cooling in heat pump applications. The RS4000C thermostats are non-programmable and operate on separate heating and cooling setpoints. 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. 2 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. 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. 3 1. Used with setpoint. 2. Used for current setpoint and some configuration data. 3. HVAC mode and status. Icons blink when active. A is for Auto, 2 is for second stage, E is for emergency. Both the 2 and E will be displayed when 3rd stage heat is active. 4. Indicates when security is active. 5. Low battery indicator. 6. Used for ambient temperature and configuration data (e.g., first stage differential, F or C, etc.). 7. Fan status (rotates when active). 8. Fan mode selected by pressing FAN button. 4 2 1 5 3 6 7 8 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 (RS4220C) is 2 °F. The second stage delay is 20 minutes. Third stage delay (RS4320C) 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 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 RS4220C and RS4320C 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. 4