Install Instructions

ManualsBrandsAprilaire ManualsHeating SuppliesThermostat Protocol Adapter

Model 8811 Protocol Adapter

Installation Instructions

RS-232

POWER

RXD

TXD

RS-485/422

DC +9V

A-

A+

B+

B-

A+

A-

B+

B-

REF

B-

B+

A+

A-

BLU/WHT

BLUE

ORANGE

ORG/WHT

RS-485/422

DC +9V

PIN #1

DO NOT

CONNECT

PIN #123456789

RS-485/422

A-

Tx-

A+

Tx+

B+

Rx+

B-

Rx-

GNDNC+9V NC NC

DB9 RS-485/422 CONNECTOR PIN-OUT

9VDC 500mA

AC PLUG-IN

TRANSFORMER

(PROVIDED)

CAT-5 NETWORK CABLE (NOT PROVIDED)

APRILAIRE MODEL 8818

DISTRIBUTION PANEL

OR MODEL 8870

COMMUNICATING

THERMOSTAT

RS-485/422 BREAKOUT

ADAPTER (PROVIDED)

RS-232 3FT CABLE

(PROVIDED)

COMPUTER OR AUTOMATION

SYSTEM WITH RS232 SERIAL

COMMUNICATION PORT

(NOT PROVIDED)

APRILAIRE MODEL 8811 PROTOCOL ADAPTER

Summary of content (2 pages)

PAGE 1
Model 8811 Protocol Adapter Installation Instructions CAT-5 NETWORK CABLE (NOT PROVIDED) BLU/WHT BLUE ORANGE ORG/WHT 9VDC 500mA AC PLUG-IN TRANSFORMER (PROVIDED) DO NOT CONNECT B- B+ A+ A- A- A+ B+ B- RS-485/422 BREAKOUT ADAPTER (PROVIDED) A+ A- B+ B- REF REF APRILAIRE MODEL 8818 DISTRIBUTION PANEL OR MODEL 8870 COMMUNICATING THERMOSTAT RS-485/422 DC +9V RS-485/422 DC +9V PIN #1 TXD RXD POWER DB9 RS-485 /422 CONNECTOR PIN-OUT PIN # RS-232 COMPUTER OR AUTOMATION SYSTEM WITH RS232 SERIAL CO
PAGE 2
APRILAIRE COMMAND SET A full command set and a detailed explanation of the command set is available for those who want to write their own software. Contact Aprilaire to request a copy. APRILAIRE COMMAND DESCRIPTION SN# [Command] [? or =] [Value (use with = only)] Enter All Aprilaire commands will begin with the characters SN. Immediately following the SN, without any intervening spaces (blanks), will be the address (#) of the Aprilaire Thermostat with which you are communicating.