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R
W
A
A
E
R
Y
R
DELUXE
NON-PROGRAMMABLE
9550
® THERMOSTAT
G E H
GAS ELECTRIC HEAT PUMP
NeW
1 Heat / 1 Cool
with Auto Changeover
User's Manual
Quick Start
Installation
2
110-1034
Application
The Robertshaw 9550 is a single-stage auto changeover thermostat
designed to control 24 VAC gas or electric heating and cooling systems or
single-stage heat pump. The 9550 requires the use of a common wire.
Features
• Auto changeover [deadband adjustable from 2°F to 8°F (1.0°C - 4.5°C)]
•Large back lit disp
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! 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 the information in this manual before installing or program- ming this thermostat. • This is a 24 VAC low-voltage thermostat. Do not install on voltages higher than 30 VAC. • All wiring must conform to local and national building and electrical codes and ordinances. •
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C O O L F A • If you have any questions about cross referencing the old terminal to the new label, reference your equipment installation manual, a licensed contractor, or call Robertshaw Technical Support at (800) 445-8299. 4. Remove existing thermostat base from wall. 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 p
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WY B O G 4. Remove the cover using a coin or screwdriver (Figure 3). Set aside. Figure 3 5. Place thermostat against the wall at desired location. Make sure wires will feed through opening (Figure 4) on base of thermostat. 6. Mark placement of mounting holes (Figure 4). Set base aside. Mounting Holes WIRING OPENING NON HP Figure 4 7. If mounting on drywall, tap plastic anchors into wall. NOTE: ENCLOSED PLASTIC ANCHORS DO NOT REQUIRE A DRILLED HOLE FOR DRYWALL. 8. Drill the marked holes using
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W Y B O G 12. Terminal screws are already loose and ready for wire insertion. Insert wires into terminal strip (Figure 5) matching the label to the corresponding terminal (see Wiring Diagrams below). Tighten screws. 13. Make sure wire connections are secure. 14. Push access wire back through opening. Figure 5 Wiring Diagrams for 9550 5 W
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WY B O G TERMINAL LEGEND - 9550 TERM EQUIPMENT TO CONNECT REQ? TERMINAL FUNCTION C 24VAC common connection Yes For input of 24VAC common side of transformer R 24VAC hot connection Yes For input of 24VAC hot side of transformer W First stage heat connection Yes* Energizes on a call for heat Y Second stage heat connection No Energizes on a call for cooling G Indoor fan connection Yes** Energizes with W (ELECTRIC mode only) and Y or with FAN option switched to the ON position O Cool active revers
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WY B O G Cut the J3 jumper to enable temperature limiting NON HP Figure 7 18. Replace thermostat cover by snapping into place. 19. Turn on power to system. Test thermostat as described in the fol- lowing section. Step 3: Testing the Thermostat WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF ! GAS VALVE OR SYSTEM CONTROL TO TEST OPER- ATION. THIS WILL DAMAGE THE THERMOSTAT AND VOID YOUR WARRANTY. CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50°F (10°C). THIS CAN
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3. Put the AUTO-HEAT-OFF-COOL switch into the OFF position. The air conditioning system should turn off. 4. Put the AUTO-HEAT-OFF-COOL switch into the HEAT position. 5. Press the button until the temperature setting is at least 3 degrees above room temperature. The heating system should turn on. The fan may not turn on immediately, depending on the fan delay built into the furnace. 6. Put the AUTO-HEAT-OFF-COOL switch into the OFF position. The heating system should turn off. The fa
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C O O L F A Step 4: Customizing the Thermostat ◆ Settings System Cool: The thermostat controls the cooling. Off: The heating and cooling systems are off. Heat: The thermostat controls the heat. AUTO:The thermostat automatically selects heat or cool depending on the temperature. Fan Auto: Equipment controls the fan. On: The fan operates continuously. Temperature The default setpoint temperature for heating is 70°F (21°C), for cool- ing is 78°F (25°C), and for auto is 72°F (22.0°C). After putting
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◆ Changing Fahrenheit (F) to Celsius (C), Temperature Differential, Deadband, and Residual Cool The temperature differential is factory set at 1°F (0.5°C). The deadband for auto changeover is set at 3°F (1.5°C). To change settings: 1. The thermostat is preset to display the temperature in degrees Fahrenheit (US models) or degrees Celsius (Canadian models). The temperature display can be changed. 2. Press and hold both the and buttons for three seconds. The display will read F or C. Release
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WY B O G ◆ Backlit Display This thermostat is equipped with a backlight to make nighttime tempera- ture adjustments quick and easy. Press the button to activate the backlight. The backlight will turn off after about 15 seconds of inactivity. ◆ Reset To reset the thermostat to factory preprogrammed conditions, press the RESET button located beneath the lower left corner of the display. NON HP RESET Switch Step 5:Troubleshooting Symptom Remedy Thermostat does not turn on system. Check wiring (se
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Two Year Limited Warranty Climate Controls Americas warrants to the original contractor installer, or to the original consumer user, each new Robertshaw thermo- stat to be free from defects in materials and workmanship under normal use and service for a period of two (2) years from date of purchase. This warranty and our liability does not apply to batteries or merchandise that has been damaged by misuse, neglect, mishandling, alterations, improper installation, or use in a way other than in acc
