For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document available online at www.upgnet.com in the Product Catalog Section.
AC 1A | Single Stage Air Conditioner – PSC Air Handler |
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| ID MODELS |
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| AHP |
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| SHP |
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THERMOSTAT |
| MA |
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| PSC |
| SINGLE STAGE | |
*PP11C70224 |
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| SINGLE STAGE | ||
| AIR HANDLER |
| AIR | |||
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| AIR CONDITIONER | |||
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| CONDITIONER |
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| PSC | 1 | SINGLE STAGE | |
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| AIR HANDLER CONTROL |
| AIR CONDITIONER | ||
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| COM |
| C | |
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| 24 – Volt Common |
| 24 – Volt Common | ||
Y |
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| Y/Y2 |
| Y | |
| Second or Full |
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Full Stage Compressor |
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| Stage Compressor |
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RH |
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| R |
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24 – Volt Hot |
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| 24 – Volt Hot |
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(Heat XFMR) |
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G |
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| G |
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Fan |
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| Fan |
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| W2 |
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| Second Stage Heat |
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RC |
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| Y1 |
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24 – Volt Hot |
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| Single Stage Compressor |
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(Cool XFMR) |
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| O |
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| Reversing Valve |
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| Energized in Cool |
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| X/L |
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| Malfunction Light |
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W |
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| W1 |
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Full Stage Heat |
| First Stage Heat |
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HM1 | 24VAC Humidifier |
| HUM |
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Humidity Switch |
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Humidistat | (Optional) |
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Open on Humidity Rise |
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| 24VAC | HUM OUT |
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| (24 VAC out) |
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| Electronic Air Cleaner | Humidifier |
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| (Optional) | EAC(24 VAC out) |
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Clipping Jumper W914 for | Electronic Air Cleaner |
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electric heat on thermostat |
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is not necessary |
| Move HUM STAT |
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| jumper to “YES” |
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| if humidistat is to be used. |
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| Refer to AH documentation |
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| for W1 and W2 electric |
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| heat staging options. |
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| OtherPartPartNumbers: | 21 |
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| SAP | = | Legacy |
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| 265902159480 | = |
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FIGURE 9: Thermostat Chart - Single Stage AC with PSC Air Handler
Johnson Controls Unitary Products | 7 |
