AprilAire 8870 - Manual

AprilAire 8870

AprilAire 8870 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 3 – W A R N I N G; for disposal information.
  • Page 4 – Table 1; TABLE 1; APPLICATION
  • Page 5 – Figure 1; FIGURE 1; SELECT THE THERMOSTAT LOCATION; STAND-ALONE THERMOSTAT MOUNTING CRITERIA:; requirements in commercial requirements.; Front Panel
  • Page 6 – DO NOT; locate the thermostat:; WITH REMOTE TEMPERATURE SENSORS; – use hands to pull the front; FIGURE 2
  • Page 7 – FIGURE 3; MOUNT BASE TO WALL; hole mounting locations (leveling required for appearance only).; Latch
  • Page 8 – SETTING THE DIP SWITCHES; Figure 4; FIGURE 4
  • Page 9 – TABLE 2; WIRING THE THERMOSTAT; Figure 5; TABLE 3
  • Page 10 – FIGURE 5
  • Page 11 – REASSEMBLE THE THERMOSTAT; No tools required; Use your hands to push the front panel securely to the mounted base.; HVAC SYSTEM CHECK OUT; after; the HVAC installation, leave the; before; the HVAC wiring, then do not connect HVAC wires to R and C.
  • Page 12 – ADJUST; FIGURE 6; Use the Check Out Procedure (
  • Page 13 – FIGURE 7
  • Page 14 – – determines the level of control and consequently the cycle; ND STAGE DIFFERENTIAL
  • Page 16 – FIGURE 8; Figure 8
  • Page 18 – The B terminal is for; DO NOT connect the; B terminal to; APRILAIRE MODEL; DIAGRAM 1 – SINGLE STAGE FURNACE AND AC
  • Page 19 – DIAGRAM 2 – TWO STAGE FURNACE AND TWO STAGE AC
  • Page 20 – B terminal to common; DIAGRAM 3 – ROOF TOP UNIT (TWO STAGE HEAT AND TWO STAGE COOL)
  • Page 21 – The thermostat B; DIAGRAM 4 – BOILER WITH AC (TWO TRANSFORMERS)
  • Page 22 – DIAGRAM 5 – SINGLE STAGE HEAT PUMP
  • Page 23 – DIAGRAM 6 – TWO STAGE HEAT PUMP
  • Page 24 – DIAGRAM 7 – FIRST STAGE RADIANT FLOOR HEAT
  • Page 28 – Aprilaire
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Installation Instructions

MODEL

8870

These instructions are for connecting

the Thermostat to the HVAC equipment.

To connect communication features,

please reference the Communicating Thermostat

System Installation Manual.

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Summary

Page 3 - W A R N I N G; for disposal information.

1 READ COMPLETE SAFETY & INSTALLATION INSTRUCTIONS BEFORE STARTING W A R N I N G 1. 120-volts may cause serious injury from electrical shock. Disconnect electrical power to the furnace and air conditioner before starting installation. This thermostat is not a 120-volt (line voltage) device. 2. I...

Page 4 - Table 1; TABLE 1; APPLICATION

MODEL 8870 THERMOSTAT SPECIFICATIONS: Control Voltage 24V AC ±20% Switched Voltage 18 – 30V AC Maximum Operating Current 2.0A total at rated voltage, through all outputs. 1.0A through any one output. Maximum Surge Current 2.0A Control Accuracy ±1.0°F Control Range 40° – 90°F Operating Range 32° – 99...

Page 5 - Figure 1; FIGURE 1; SELECT THE THERMOSTAT LOCATION; STAND-ALONE THERMOSTAT MOUNTING CRITERIA:; requirements in commercial requirements.; Front Panel

2. WHAT’S IN THE BOX • Thermostat ( Figure 1 ): front panel, cover, and base • Installation Manual• Owners Manual• Hardware bag: screws and wall anchors FIGURE 1 3. SELECT THE THERMOSTAT LOCATION Determine if the thermostat will be operating alone, or with remote temperature sensors. If the unit is ...

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