Table of Contents
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NeW
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 display
• Adjustable temperature differential
• Compressor short cycle protection
• Adjustable fan delay on cooling
• LED indication of system status
• Zone system compatible as a master thermostat
• Battery-free EEPROM memory retention
• Optional temperature limiting settings
• Fahrenheit/Celsius display option
• Gas/electric operation
• Adjustable from 45°F to 90°F (7°C - 32°C)
• Quick wire terminal block
9550
®
1
DELUXE
NON-PROGRAMMABLE
THERMOSTAT
G
E
GAS
ELECTRIC
1 Heat / 1 Cool
with Auto Changeover
User's Manual
Quick Start
Installation
H
HEAT PUMP
2
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Table of Contents
Related Manuals for Robertshaw 9550
Summary of Contents for Robertshaw 9550
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Page 1: Quick Start
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)] •... -
Page 2: Important Safety Information
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. -
Page 3: Installing
• 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. - Page 4 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...
- Page 5 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...
- Page 6 TERMINAL LEGEND - 9550 TERM EQUIPMENT TO CONNECT REQ? TERMINAL FUNCTION 24VAC common connection For input of 24VAC common side of transformer 24VAC hot connection For input of 24VAC hot side of transformer First stage heat connection Yes* Energizes on a call for...
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Page 7: Step 3: Testing The Thermostat
Cut the J3 jumper to enable temperature limiting 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. - Page 8 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.
- Page 9 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. Auto: Equipment controls the fan. On: The fan operates continuously.
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Page 10: Led Indicators
9. The display will return to the original room temperature display after a few seconds. LED Indicators The Robertshaw 9550 uses three LED indicators (in addition to icons on the LCD display) to indicate functionality of the thermostat. When illuminated, the right orange LED indicates that the thermostat is calling for heat. -
Page 11: Step 5: Troubleshooting
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. -
Page 12: 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...