Setup & Testing
System setup instructions (continued)
System setting | Setting range, default in bold | ||
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09 | 1st stage differential | 1°F (0.5°C) | |
1°F to 4°F (0.5°C to 2°C) | |||
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10 | 2nd stage differential (8448, 8466) | 1°F (0.5°C) | |
1°F to 4°F (0.5°C to 2°C) | |||
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11 | 3rd stage differential (8448HP, 8466HP) | 1°F (0.5°C) | |
1°F to 4°F (0.5°C to 2°C) | |||
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12 | Reverse valve (8446, 8466HP, 8465, 8466HP) | 0 – O/B energized in cooling (O) | |
1 – O/B energized in heating (B) | |||
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13 | Integral factor period (P+I control)* | 4 minutes | |
| Set to OFF for proportional control only | 1 to 5 minutes or “OFF” to disable | |
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14 | Deadband (auto mode) | 3°F (2°C) | |
2°F to 5°F (1°C to 3°C) | |||
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15 | Progressive recovery (8463, 8465, 8466) | 0 : Progressive recovery is disabled | |
1 : Progressive recovery is enabled | |||
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*The integral factor is used in the equipment control algorithm to maintain the space temperature at set point.
A short integral factor period will increase the number of cycles per hour. (A short integral factor period will be more comfortable.) A long integral factor period will lower the number of cycles per hour. (A long integral factor period will be more economical.)
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61000652C 8400 Tstat Install.indd 14 | 10/13/09 11:09:00 AM |