Aprilaire 8825 Installation Manual

HVAC AutomationCommunicating Thermostat System Installation Manual

RCRHGW2CRSCRSARSBRSRRREFY2B-B+A+A-B+ B- REFA-RCA+ A- B+ B- A+ A-ABA+OFF ONOFF ONOFF ONON OFFON OFFON OFFPWRPWRAABAABRCA+A-B+B-A+A-COMMUNICATIO

BLU/WHTBLUORG/WHTORGGRN/WHTBLU/WHTBLUORG/WHTORGGRN/WHTCAT-5REFRCA+ A- B+ B-ABOFF ONOFF ONON OFFON OFFPWRPWRABABRCA+A-B+B-B+ B- REFA-RCA+ A- B+

RS-232POWERRXDTXDRS-485/422DC +9VA-A+B+B-A+A-B+B-REFREFB-B+A+A-BLU/WHTBLUEORANGEORG/WHTRS-485/422DC +9VPIN #1DO NOTCONNECTPIN # 1234 56789RS-485/422A-

111. 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 or

12IMPORTANT!THESE STEPS MUST BE DONE AT EACH THERMOSTAT FOR COMMUNICATION TO WORK PROPERLY.1. Press the Mode and Enter buttons simultaneouslythrough t

1. Connect the Protocol Adapter RS-232 output to a computerwith Windows ’95, ’98, Windows 2000, Windows NT, or XP.This may already have been done in S

6. This will bring up a Connect to dialog box. From the pulldown next to “Connect using:”, select the Com port towhich the Protocol Adapter is connect

158. From the File pull-down menu, select Properties. This will bring up a Properties dialog box.9. Select the Settings tab. Make the following select

B+ B- REFA-RCA+ A- B+ B-ABA+OFF ONOFF ONON OFFON OFFPWRPWRABABRCA+A-B+B-“A” LED flashes whencommunications are transmitted by the thermostats“

ONOFFONOFFONOFFONOFFONOFFONOFFONOFFONOFFORBLBKRD2/YBB4 B824V24Vc Communication CardPOWER24V AC485 SERIAL INOR BL BK RDY2W124V(c)24VRGY1W2CLK1RS11

This manual will guide the installer through the installation, wiring and checkout of an Aprilaire Model 8870 CommunicatingThermostat System. Instruct

Y2W124V(c)24VRGY1W2CLK1RS11RS+vRS2CLK22 CommunicationCardMODEL 8809 COMMUNICATING SUB-BASEMODEL 8848 SHOWNORG/WHTBLUORG40VAXFRMRBRNGRNBLU/WHTORG/WHTBL

A full command set and detailed explanation of thecommand set is available for those who want to write theirown software. Contact Research Products Co

COMMAND DESCRIPTION VALUECommunication Control CommandsCR Command Response Control Silent / Quiet / NormalC1 Change of State (COS) – HVAC relays ON/OF

21JOB TITLE:JOB LOCATION:DATE:INSTALLINGCONTRACTOR:ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATI

10008222 8.08B2204662ARESEARCH PRODUCTS CORPORATION1015 E. WASHINGTON AVE. • MADISON, WI 53703 • PHONE: 888/782-8638 • FAX: 608/257-4357 • www.apri

ILLUSTRATION 1 – System ComponentsModel 8870 ThermostatRS-422 Communicating Thermostat controls single or multi-stage heat/cool or heat pump HVAC syst

2MODEL 8870 THERMOSTATThe Model 8870 Thermostat is field configurable to operatesingle and multi-stage separate heating and coolingequipment (such as

AutomationSystemRS-232POWERRXDTXDRS-485/422DC +9VProtocol Adapter(if needed)DISTRIBUTION PANELDistribution PanelRC24VAC24VAC40VAXFRMRRCCommunicating T

41. Thermostats and sensors are to be located according tothe installation instructions provided with the units. Thethermostat has four configuration

JOB TITLE:JOB LOCATION:DATE:INSTALLINGCONTRACTOR:ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION ADDRESS LOCATION

6A qualified HVAC technicianshould perform this step toensure proper termination.1. Make sure the HVACsystem power is off.2. The ThermostatInstallatio

RCRHGW2CRSCRSARSBRSRRREFY2B-B+A-RCRHGW2CRSCRSARSBRSRRREFY2B-B+A-RCRHGW2CRSCRSARSBRSRRREFY2B-B+A-2-WIRE TSTATCABLEORG/WHTORGBLUBLU/WHTRSRRSAT2T1RSBRSCT