Aprilaire 8870 System Installation Manual
Aprilaire automated hvac communicating thermostat
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Also See for 8870:
- Installation instructions manual (28 pages) ,
- Operating instructions manual (11 pages) ,
- Installation instructions manual (15 pages)
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Summary of Contents for Aprilaire 8870
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Page 1: Communicating Thermostat
® AUTOMATED HVAC THE BEST IN INDOOR AIR COMFORT Communicating Thermostat System Installation Manual ® P A R T T H E A P R I L A I R E I N D O O R A I R... -
Page 2: Table Of Contents
COMMUNICATING THERMOSTAT SYSTEM INSTALLATION MANUAL This manual will guide the installer through the installation, wiring and checkout of an Aprilaire Model 8870 Communicating Thermostat System. Instructions for the Aprilaire 8840 Series communicating thermostat system are found in a separate document (DP 10004345). A portion of the command set is found in Appendix 2 in this manual. For a complete command set with programming suggestions, see the programming manual (DP 10005756). -
Page 3: Step 1 Get All The Components You Will Need
GET ALL THE COMPONENTS YOU WILL NEED COMPONENTS YOU WILL NEED… (see ILLUSTRATION 1) • One Aprilaire ® Model 8870 Communicating Thermostat for each zone or single zone HVAC system • One Aprilaire Model 8818 Distribution Panel per eight (8) thermostats in the system •... -
Page 4: Step 2 Disconnect Power To All Hvac Equipment And/Or Zone Control Panels
MODEL 8818 DISTRIBUTION PANEL The Distribution Panel is a switch controlled communication bus that can be wired to eight (8) Aprilaire Model 8870 thermostats. This allows thermostat communication (transmit, receive or both) to be turned on and off at one convenient location which simplifies installation and trouble shooting. -
Page 5: Step 3
Category 5 cable must be run from thermostat to support module. 2. At the HVAC/zone control system, use a piece of tape to label the location of the thermostat on the cable as you go. ILLUSTRATION 2 – Run Wire For System 2-WIRE... -
Page 6: Step 4 Locate And Mount The Automation System Components
(ILLUSTRATION 3) which shows how all the communication components are connected together ✍ write down the location of, or a name for, each thermostat in the system. This will assist in the software set-up. Additional copies are available in the back of this manual. ✍... - Page 7 ILLUSTRATION 3 – Network Interconnection Worksheet...
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Page 8: Step 5 Connect The Control Wires To The Hvac/Zone System And Thermostats
INDOOR BLOWER/HEAT UNIT REFER TO THE THERMOSTAT INSTALLATION SHEET FOR INTERNAL SCHEMATIC, THERMOSTAT CHECK-OUT PROCEDURES AND OTHER HVAC WIRING DETAILS USE 18-20 GA. THERMOSTAT CABLE. NUMBER OF CONDUCTORS REQUIRED DEPENDS ON THE HVAC SYSTEM BEING CONTROLLED 2ND STAGE COOL STAGE... - Page 9 Model 8051 FLUSH MOUNT SENSOR Model 8061 OR 8062 SUPPORT MODULE R.V.-Cool (O) R.V.-Cool (O) BLU/WHT ORG/WHT R.V.-Heat (B) R.V.-Heat (B) Model 8870 THERMOSTAT R.V.-Cool (O) R.V.-Cool (O) BLU/WHT ORG/WHT R.V.-Heat (B) R.V.-Heat (B) Model 8870 THERMOSTAT R.V.-Cool (O) R.V.-Cool (O)
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Page 10: Step 6
1. MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF! 2. Connect the communication wires. DIAGRAM 4 shows how each thermostat is to be wired to the distribution panel. • Use the wire colors shown in DIAGRAM 4 to help ensure proper, consistent connections. -
Page 11: Step 7
1. MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF! 2. If more than one Distribution Panel is used in the thermostat network, the communication lines must be daisy-chained together. • Use the wire colors shown in DIAGRAM 5 to help ensure proper, consistent connections. -
Page 12: Step 8 Connect Protocol Adapter To The Distribution Panel And Host Computer Or Automation System
Step 8 CONNECT PROTOCOL ADAPTER TO THE DISTRIBUTION PANEL AND HOST COMPUTER OR AUTOMATION SYSTEM 1. MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF! 2. Use Category-5 wire to connect the main communication terminals on the Distribution Panel with the “Flying Leads” of the protocol adapter (see DIAGRAM 6). -
Page 13: Step 10 Turn On Power To All Hvac Equipment And To The Thermostats
1. MAKE SURE THAT ALL SWITCHES IN THE DISTRIBUTION PANEL ARE OFF! 2. Use a 2-wire thermostat cable to connect the load terminals of the Model 8027 Plug-in Transformer to the 24V AC terminals of the Distribution Panel (see DIAGRAM 3). -
Page 14: Step 12 Address The Thermostats And Set Highest Address
THESE STEPS MUST BE DONE AT EACH THERMOSTAT FOR COMMUNICATION TO WORK PROPERLY. 1. Press the Mode and Enter buttons simultaneously through the thermostat. It may take a couple of tries to get them pressed together. This will enter the Thermostat Set Up Menu. The first... -
Page 15: Step 13 Setup Computer For Communication System Checkout
Step 13 SETUP COMPUTER FOR COMMUNICATION SYSTEM CHECKOUT 1. Connect the Protocol Adapter RS-232 output to a computer with Windows ’95, ’98, Windows 2000 or Windows NT. This may already have been done in Step 7. 2. Turn on the computer. ILLUSTRATION 6 –... - Page 16 6. This will bring up a Connect to dialog box. From the pull down next to “Connect using:”, select the Com port to which the Protocol Adapter is connected (see ILLUSTRATION 8). Start with Com port 1 (or the next lowest available number) if you are unsure which one to use.
- Page 17 1. IF USING AN EXISTING HYPERTERMINAL CONNECTION YOU MAY NEED TO UNCHECK THE “SEND LINE FEEDS…” BOX. 2. THE MODEL 8870 HAS AN EXPANDED COMMAND SET. REFER TO DP 10004345 FOR THE MODEL 8840 SERIES COMMAND SET. ILLUSTRATION 11 – ASCII Setup 11.Click OK to put away both dialog boxes.
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Page 18: Step 14 Check-Out Communications To The Thermostat Network
4. Type SN ID? and press Enter. The computer should respond SN1 MODEL# 8870 REV: Vx.x - RPC 2002; where x.x represent the current firmware revision level. This is done to determine if the communication is robust. - Page 19 SPECIAL CONSIDERATIONS FOR INSTALLING THE MODEL 8870 WITH THE 8840 SERIES COMMUNICATING THERMOSTAT If adding a Model 8870 thermostat to a system using 8840 series thermostats (8844, 8846, 8847 or 8848), you must change the power supply installation, modify the addressing method and remove terminating resistors from the Model 8811 protocol adapter.
- Page 20 8840 series thermostat network then the 8870 thermostat must be addressed #1 or #6. Change the existing address #1 to be #5 and add the 8870 as address #1, or simply add the new thermostat as address #6.
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Page 21: Appendix 2 Aprilaire Command Set
EXCEPTION: The command SN? or SN0? will respond with all connected thermostats returning their address. COMMAND RESPONSE SYNTAX The Model 8870 will respond by supplying the information requested or by confirming the completion of an action command. The response syntax is generally the same as that used for commands, but no spaces separate command, action or value. - Page 22 Report HVAC Relay States Auxiliary Information Commands EQUIPCONFIG Reports the setting of the thermostat configuration dip switches BLTON Turns on backlighting for 10 seconds. MODEL 8870 BASIC COMMAND SET VALUE Silent / Quiet / Normal ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF...
- Page 24 1015 E. WASHINGTON AVE. • MADISON, WI 53703 • PHONE: 888/782-8638 • FAX: 608/257-4357 • www.aprilaire.com DP 10005754 1.5.4.02...
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