Honeywell Switch R845A User's Manual
Contents
1. 11 is an internal view of the RA832A showing terminal locations and barriers Never connect load terminals to a load that takes more current than the amount listed in the electrical ratings on the relay See Table 3 for wiring length specifications Fig 2 Internal schematic and typical hookup for RA89A LOW VOLTAGE CLASS 2 2 WIRE THERMOSTAT A RA89A JUMPER REMOVED L2 L1 TO LOAD A tor POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED A COMPLETE WIRING AS SHOWN ABOVE M3819 60 248 1 2 TABLE 3 WIRE LENGTH SPECIFICATIONS Length of Run to AWG Wire Total Wire Thermostat Size Length 2 wires Number Lm up el Fig 3 Internal schematic and typical hookup for RA832A LOW VOLTAGE CLASS 2 2 WIRE THERMOSTAT p gt AUXILIARY TO LOW OR MILLIVOLTAGE POWERPILE LOAD L2 L1 LOAD1 LOAD2 HOT OPTIONAL A POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED M3821 Fig 4 Internal schematic and typical hookup for R182J R182J LOAD LOAD L1 L2 A N O N C N O N C HOT A POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED A N O CONTACTS MAKE BEFORE N C CONTACTS BREAK AND N C CONTACTS MAKE BEFORE N O CONTACTS BREAK M8232 Fig 5 Thermostat connections for R182J THREE WIRE THREE WIRE TWO WIRE LOW VOLTAGE LOW VOLTAGE LOW VOLTAGE SERIES 10 A SERIES 20 SERIES 80 THERMOSTAT THERMOSTAT THE2. TRANSFORMER RATINGS Rating vat Rama FINISH Gray enamel KNOCKOUTS Case bottom 2 RA89A RA832A R845A 3 RI82J R482J R882J All models have 1 wiring hole in case top All knockouts are for 1 2 in 12 7 mm conduit APPROVALS Underwriters Laboratories Inc Listed RA89A RA832A R882J R845A File no E4436 Guide no XAPX R482J File no E14480 Guide no NLDS R847A File no SA481 Guide no SDFY Canadian Standards Association Certified R482J R882J R847A File no LR1620 WHEN INSTALLING THIS PRODUCT Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After completing installation use these instructions to check out product operation H182J R482J R845A R847A R882J RA89A RA832A SPECIFICATIONS e INSTALLATION Fig 1 Approximate mounting dimensions in in mm r 22 DIAMETER E 2 DIAMETER 1 KEYHOLE TYPE 3 13 DIAMETER MOUNTING HOLE 1 54 133 31 so z 89 8 T aj 6 DIAMETER MOUNTING HOLE 8 25 3 KNOCKOUT FOR 7 ao 20 je 15 35 1 2 13 CONDUIT 3 m3823 Installation N WARNING ELECTROCUTION HAZARD CAN CAUSE PROPERTY DAMAGE SEVERE INJURY OR DEATH Transformer
3. core not bonded Disconnect power supply before wring to prevent electrical shock or equipment damage 60 2481 2 H182J R482J R845A R847A R882J RA89A RA832A INSTALLATION MOUNTING For replacement mount the relay in the same location as the old control If this is a new installation locate the relay vertically on a solid wall or partition as near as possible to the device to be controlled Select a location that is easily accessible for installation and service NOTE To reduce possible transformer hum and relay noise that can be amplified by mounting surfaces of sheetmetal plasterboard and similar materials place rubber or felt washers between the case and the mount ing surface l Position the relay and mark the mounting holes See Fig 1 2 Start a screw for the keyhole type mounting hole in the upper right hand corner Turn down screw within about 1 8 in 3 2 mm of the surface 3 Hang the relay on the screw position the case and start the bottom screw 4 Tighten both screws IMPORTANT The switching relay terminals are ap proved for use with copper wires only All wiring must comply with all applicable electrical codes ordinances and regulations Follow any instructions furnished with the controlled equipment See Figs 2 through 10 for hookup diagrams for these relays When two or more devices are to be controlled in parallel the total current must not exceed the relay load rating Fig
4. product is tested and TRADELINE MODELS AVAILABLE calibrated under closely controlled conditions and R182J 120 and 240V models some minor differences in performance can be ex R482J 120 and 240V models pected if those conditions are changed R845A 120V models R847A 120 and 240V models TRADELINE MODELS RA89A 24V controller TRADELINE models are selected and packaged to RA832A 120 and 240V models provide ease of stocking ease of handling and maximum ADDITIONAL FEATURES TRADELINE pack with cross reference label and special instructions STANDARD MODELS See Table 1 TABLE 1 SWITCHING RELAY SPECIFICATIONS Coil Voltage Relay Coil Contact Voltage Switch Control Vac at Current Ratings A Models Application 50 60 Hz Action Circuit 50 60 Hz A R182 For 24V thermostat control 120 Dpdt 3 wire 24 0 40 of line voltage devices 1 R482J Controlled by a line 1 voltage controller 208 240 2 Spst Ordering Information RA89A For switching one line voltage load RA832A For switching two line Dpst voltage loads having a 2 common power source See footnote on page 3 20 40 R845A For hot water zone control 120 Dpst 24 0 40 7 4 44 4 systems or spst control of two separate loads R847A Provides switching for high current loads such as 240 10 50 cooling compressors R882J For use with separate low 4 Dpdt 7 4 44 4 voltage power source 40 When purchasing replacement a
5. Honeywell R182J R482J R845A R847A R882J RAS9A RA832A Switching Relays These relays provide intermediate or heavy duty service in a wide variety of switching con figurations HAZARD OF ELE CTRI TRANSFORMER CORE Noy Sore E DISCONNECT ONI S DE NERA BE REQUIRED To SER VICIS CE BEFORE RISQUE pe UE NOYAU t NESTp Bi Relays with 24V control coils RI82J R882J R847A E Heavy duty relays R847J RA89A RA832A and R845A Bl R847A has flexible internal leads to provide either E Relays with line voltage control coils R482J spst or spdt switching Bi Relays with internal 24V transformer R182J BB RA832A has contacts for low voltage and RA89A RA832A R845A and R847A millivoltage Powerpile use Bi Relays for use with an external 24V supply R882J CONTENTS Specifications eee enn n 2 Ordering Information eese 2 InistalldlioW enero eto ea eu ie enne den 3 Service and Checkout seen 6 J H Rev 10 94 e OHoneywell Inc 1994 e Form Number 60 2481 2 H182J R482J R845A R847A R882J RA89A RA832A SPECIFICATIONS e ORDERING INFORMATION Specifications IMPORTANT The specifications given in this publica replacement value TRADELINE model specifications are tion do not include normal manufacturing toler the same as those of standard models except as noted below ances Therefore this unit may not exactly match the listed specifications Also this
6. MEANS AS REQUIRED A WHEN CONTROLLING TWO LOADS USE 3 AND 4 FOR LINE VOLTAGE LOAD AND 5 AND 6 FOR LINE OR LOW VOLTAGE LOAD IF USING LOW VOLTAGE USE A SEPARATE TRANSFORMER M3820 60 248 1 2 H182J RA82J R845A R847A R882J RA89A RA832A INSTALLATION e SERVICE AND CHECKOUT Fig 9 Internal schematic and hookup for R847A LOW VOLTAGE CLASS 2 2 WIRE THERMOSTAT TO L2 Li POWER LOAD1 POWER LOAD2 HOT POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED A WHEN CONTROLLING TWO LOADS USE 3 AND 4 FOR LINE VOLTAGE LOAD AND 5 AND 6 FOR LINE OR LOW VOLTAGE LOAD IF USING LOW VOLTAGE USE A SEPARATE TRANSFORMER A 10 AMP CONTACT RATING OR 20 AMP WHEN POLES ARE CONNECTED IN PARALLEL M8231B Fig 10 Internal schematic and hookup for R882J 4 O LOW VOLTAGE CONTROLLER SOURCE O R882J N O N C COM N O N C COM LOAD LOAD M8235 Fig 11 Internal view of RA832A Switching Relay 24V TRANSFORMER Service and Checkout 1 Never use oil on any part of the relay coil or contacts 2 Keep the cover on the relay during normal operation and remove only for service and checkout 3 Relay contacts require no cleaning contacts close with a wiping action and are self cleaning They may turn black after being in service for some time however this discoloration does not prevent proper operation 4 Afterinstallation is complete operate system through at le
7. RMOSTAT OJO A MAKES CONTACT ON TEMPERATURE FALL ONLY 09 182J exe OO A 000 JUMPER A MAKES CONTACT ON BOTH A TEMPERATURE RISE AND FALL M8233A Fig 6 Internal schematic and typical hookup for R482J R482J A AO 0 0 9 9 C2 CONTROLLER A N O N C COM N O N C COM TO LOAD TO LOAD POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED MERCURY SWITCH TYPE N O CONTACTS MAKE BEFORE N C CONTACTS BREAK AND N C CONTACTS MAKE BEFORE N O CONTACTS BREAK M8234 A CONTROLLER IF USED MUST BE SNAP ACTION OR H182J R482J R845A R847A R882 RA89A RA832A INSTALLATION Fig 7 Schematic diagram showing R845A in multizone forced hydronic heating system This arrangement is suitable for any number of additional zones HYDRONIC HEATING TO ADDITIONAL R845A CONTROL TERMINALS RELAYS FOR OTHER ZONES AAA A RA845A RELAY M THERMOSTAT ZONE 1 THERMOSTAT ZONE 2 SEA MH SEE MR POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT MEANS AS REQUIRED Ar CONTROLLING TWO LOADS USE 3 AND 4 FOR LINE VOLTAGE LOAD 5 AND 6 FOR LINE OR LOW VOLTAGE LOAD Ar USING LOW VOLTAGE USE A SEPARATE TRANSFORMER M3822 Fig 8 R845A hookup for controlling two loads LOW VOLTAGE CLASS 2 2 WIRE THERMOSTAT Li TO TO L2 HOT POWER LOAD 1 POWER LOAD2 POWER SUPPLY PROVIDE OVERLOAD PROTECTION AND DISCONNECT
8. ast one cycle from the controller to make certain the relay controls the equipment as intended Honeywell Home and Building Control Honeywell Inc 1985 Douglas Drive North Golden Valley MN 55422 MIP 2V9 Printed in U S A Home and Building Control Honeywell Limited Honeywell Limit e 740 Ellesmere Road Scarborough Ontario Helping You Control Your World QUALITY IS KEY
9. nd modernization products from your TRADELINE wholesaler or distributor refer to the Tradeline Catalog or price sheets for complete ordering number or specify 1 Order number 2 Accessories if desired If you have additional questions need further information or would like to comment on our products or services please write or phone 1 Your local Home and Building Control Sales Office please check the white pages of your phone directory 2 Home and Building Control Customer Logistics Honeywell Inc 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 612 951 1000 In Canada Honeywell Limited Honeywell Limitee 740 Ellesmere Road Scarborough Ontario M1P2V9 International Sales and Service Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 60 248 1 2 2 IMPORTANT The transformer on the R182 can over heat when used with a series 20 thermostat if the total resistance of the thermostat including thermo stat wire and thermostat contact resistance exceeds 2 5 ohms add a 100 ohm 10 watt resistor between the W and R terminals Table 2 gives maximum thermostat wire runs if longer runs are necessary measure the resistance or add a 100 ohm 10 watt resistor across terminals W and R See Table 2 for the ratings of built in transformer all transformers are rated at 120 240V 50 60 Hz TABLE 2
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