Robertshaw 9520 - Manuals
Robertshaw 9520 – Manual in PDF format online.
Manuals:
Manual Robertshaw 9520
Summary
Features • Multi-stage heating and cooling control • Zone system compatible as a master thermostat • Multi-colored LED indicators for system status • Low battery indicator. • Fahrenheit/Celsius display option. • Adjustable from 45°F (4°C) to 90°F (32°C). • Accuracy within ± 1 degree. • Adjustable te...
Table 1 Old Terminal New Label Description R, V-VR or VR-R R 24 VAC Return Y, Y1 or M Y Stage 1 Cooling/HeatingCircuit O or R O Reversing Valve(Cooling Mode) B B Reversing Valve(Heating Mode) F or G G Fan Control Relay Y2 Y2 2nd Stage CoolingCircuit W1 or W2 or W-U W2 2nd Stage HeatingControl L or X...
11. Terminal screws are loosened. Insert wires into terminal strip (Figure 4) matching the label to the corresponding terminal (see Wiring Diagrams below). Tighten screws. 5 Typical heat pump with cool active reversing valve and auxiliary/emergency heat. O B 9520 WIRING SAMPLE #1 Y1 E G W2 C L R Y2 ...