Aprilaire 8870 installation instructions Mount Base to Wall

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FIGURE 3

Press base here

Latch

5. MOUNT BASE TO WALL

There are four screw holes located on the base of the thermostat; two are for a junction box mounting, along with two for alternate mounting spacing. Use one of the holes on the top and one on the bottom.

a)Place the base over the wire hole opening in the wall; level the base and mark the screw hole mounting locations (leveling required for appearance only).

b)If using supplied wall anchors, drill 3/16" hole in the center of the marked locations and tap in the wall anchors. If using the supplied screws only, drill a 3/32" hole in the center of the marked locations.

c)Fasten the base to the wall with the supplied screws.

d)Seal wire entry using caulk, drywall putty or insulation.

CAUTION: Minimize wire entry hole size and seal – drafts from

inside the wall could affect temperature readings.

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Contents Installation Instructions Installation Instructions Manual Table of Contents WA R N I N G Hvac System PRE-INSTALLATION Check List Model 8870 Thermostat SpecificationsSelect the Thermostat Location WHAT’S in the BOXSTAND-ALONE Thermostat Mounting Criteria With Remote Temperature Sensors DisassemblyMount Base to Wall Shows what each switch corresponds to depending on posi Setting the DIP SwitchesApplication Switch #1 Switch #2 Switch #3 Wiring the ThermostatPage Hvac System Check OUT Reassemble the ThermostatButtons Message Display Scroll SET-UP CHECK-OUT Procedure Temperature Control Options Optional Hvac SET-UP FeaturesBalance Points Display Options To Access These Hvac SET-UP FeaturesTo Access These Hvac SET-UP Features Cont Aprilaire Model Thermostat Aprilaire Model Thermostat See Terminal to common Diagram 3 Roof TOP Unit TWO Stage Heat and TWO Stage CoolDiagram 4 Boiler with AC TWO Transformers See Diagram 5 Single Stage Heat PumpThermostat B Terminal is for Diagram 6 TWO Stage Heat PumpConnect the B terminal Page Page Page Aprilaire Automatic Humidifiers Best in Indoor AIR Comfort