— — — — — RA889A has one set of COM/N.O. relay contacts. Use R8845U if two sets are required. RA889A has lower output load rating. Check load requirements. INSTALLATION MOUNTING In replacement applications, mount the new relay in the When Installing this Product .
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POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. USE GROUNDING SCREW PROVIDED. M14301 B1 IS 1/4 IN. TAB TERMINAL. Fig. 3. RA889A hookup for L7148A/L8148A in an oil-fired, tankless hot water, zoned, pump system. 69-1293—1...
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CONTROL CASE MUST BE CONNECTED TO EARTH GROUND. L7148F/L8148E USE GROUNDING SCREW PROVIDED. B1 IS 1/4 IN. TAB TERMINAL. M13314 Fig. 4. RA889A hookup for L7148F/L8148E in a gas-fired, 24V, zoned, pump system. R8888 (HOT) L2 3 RA889A CIRCULATOR PUMP 5 20 VA N.O.
1 MAKES CONTACT ONLY ON TEMPERATURE FALL. M13316 TROUBLESHOOTING Fig. 6. RA889A thermostat connections. Test Button — This connection is the same as a call for heat connec- FOR 24V THERMOSTAT CONTROL tion between the R(T) and W(T) terminals.
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RA889A SWITCHING RELAY Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 customer.honeywell.com 69-1293—1 69-1293—1 G.R. Rev. 7-99...