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| Aprilaire |
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Digital Heat Pump Thermostat | Center LED illuminates | ||
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| when |
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| source is being used. |
Temperature ˚F or ˚C. |
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| (Models 8536 & 8537 |
Room temp. normally |
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| only) |
displayed. Press |
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Outdoor button to |
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| Heat and Cool Mode |
display outdoor temp. |
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| icons. Both displayed |
(Model 8041 required). |
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| during Auto Mode. |
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| Flame flickers during |
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| heat call and Snowflake |
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| flashes during cool call. |
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| Displays mode when | |
the active set point |
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(full sun = Day set | Mode | Outdoor | changing (Heat, Cool, |
point, partial moon |
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| Emergency Heat, Off, |
= Night set point). |
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| and Auto). (Emergency |
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| Heat Models 8536 & |
| Fan | Day/Night | 8537 only) |
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Press to select Heat/ |
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Emergency Heat/Cool/ |
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| Press to display |
Auto/Off. (Emergency |
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| outdoor temperature |
Heat Models 8536 |
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| (w/optional Model 8041 |
& 8537 only) |
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| Remote Outdoor |
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| Sensor only). |
Press for continuous |
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| Press to change |
fan. Press again to |
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| set point to either |
resume to auto fan. |
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| the Day or Night |
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| preset value. |
Fan icon displays during |
| Press to raise and lower set point. Press both at the | |
| same time to switch between ˚F and ˚C. Press and | ||
continuous fan only. |
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| release to view current set point. | ||
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Figure 1 - Display and Button Description | – 2 – |
