24a34 series fan/heat sequencers installation instructions description specifications the 24a34 series fan/heat sequencer gives the service tech - nician a direct replacement for sequencing both fan and heat. the terminal markings on the 24a34 sequencers are equivalent to most other manufacturers types. these sequencers may be wired in series, as shown in wiring diagrams, to allow sequencing of one through seven element furnaces. ca ution ! to prevent electrical shock and/or equipment damage, disconnect electric power to system, at main fuse or circuit breaker box, until installation is complete. do not use on circuits exceeding specifed voltage. higher voltage will damage control and could cause shock or fre hazard. failure to read and follow all instructions carefully before installing or operating this control could cause personal injury and/or property damage. www.white-rodgers.com www.emersonclimate.com part no. 37-4800c replaces 37-4800b 1050 table notes: ? m1-m2 and m3-m4 are always frst switches to turn on and last to turn off. all other switches are random on and random off ? 24A34-14 switch contacts designated f 1 - f 2 instead of m 1 - m 2 ? these contacts switch simultaneously note: underwriters laboratories requires a fan interlock circuit to insure the blower remains operating whenever more than one sequencer is used. the fan in - terlock should be the m 1 / m 2 contacts of the second or third sequencer. all m 1 / m 2 contacts are wired to the blower motor so that any sequencer that is energized will keep the blower on. electrical ratings - single load contact ratings (all models) vac resistive (non-inductive) motor ratings (inductive) pilot duty watts amps full load locked rotor 120 3000 25.0 14.0a 72.0a 125 va 240 6000 25.0 7.0a 42.0a 125 va 480 6000 12.5 C C 480 va electrical ratings - single load contact ratings (all models) model number timings switches timings C on timings C off m1-m2 m3-m4 m5-m6 m7-m8 m9-m10 m1-m2 m3-m4 m5-m6 m7-m8 m9-m10 24A34-1 1 1 1-20 C C C C 40-110 C C C C 24a34-2 1 1 C C 30-90 C C C C 1-30 C C 24a34-3 ? 1 2 1-20 1-20 C C C 40-110 40-110 C C C 24a34-4 1 2 C C 30-90 30-90 C C C 1-30 1-30 C 24a34-5 ? 2 3 1-110 1-110 1-110 C C 1-110 1-110 1-110 C C 24a34-6 ? 2 4 1-110 1-110 1-110 1-110 C 1-110 1-110 1-110 1-110 C 24A34-14 ?? 4 5 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 24A34-15 1 1 1-60 C C C C 75-95 C C C C ? ? ? ? ? ? ? ? ? ? ? ?
2 wiring diagrams for one element furnaces fan delay off combination fan and heater loads separate fan and heater loads one pole wiring m2 m1 to 1st element & fa n h h to 24 va c w all ther mostat (one timing) 24A34-1 / -2 tw o pole wiring m2 m1 to fa n h ht o 24va c w all ther mostat (one timing) 24a34-3 / -4 m4 m3 to 1st element do tted line between "h" terminal is a fa ct or y-inst alled jumper for two element furnaces combination fan and heater loads separate fan and heater loads for three element furnaces with combination fan & heater loads single-stage room thermostat two-stage room thermostat option tw o pole wiring m2 m1 to 1st element & fa n h ht o 24va c w all ther mostat (one timing) 24a34-3 / -4 m4 m3 to 2nd element tw o pole wiring m6 m5 to 2nd element or aux. contacts h ht o 24va c w all ther mostat (t wo timings) 24a34-5 m2 m1 to fa n m4 m3 to 1st element h h one pole tw o pole wiring m6 m5 to 3rd element h h to 24va c w all ther mostat (t wo timings) 24a34-5 m2 m1 to f an & 1st element m4 m3 to 2nd element h h one pole tw o pole wiring m8 m7 to 3rd element h h to 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to f an & 1st element m4 m3 to 2nd element h h tw o pole m6 m5 for three element furnaces with separate fan & heater loads single-stage room thermostat two-stage room thermostat option tw o pole wiring m8 m7 to 3rd element h h to 24va c w all ther mostat (t wo timings) 24a34-5 m2 m1 to fa n m4 m3 to 1st element h h tw o pole m6 m5 to 2nd element tw o pole m8 m7 to 2nd element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to fa n m4 m3 to 1st element h h tw o pole m6 m5 to common of 24v transf or mer tw o pole wiring m2 m1 to f an inter loc k h ht o w2 of 24va c w all ther mostat (one timing) 24a34-3 / -4 m4 m3 to 3rd element wiring 2 3 i nor mally close h h nor mally open (one timing) 24A34-15
3 wiring diagrams for four element furnaces combination fan and heater loads separate fan and heater loads tw o pole wiring m8 m7 to 4th element h h to 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to f an & 1st element m4 m3 to 2nd element h h tw o pole m6 m5 to 3rd element single-st a ge room ther mostat tw o pole m8 m7 to 2nd element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to fa n m4 m3 to 1st element h h tw o pole m6 m5 to common of 24v transf or mer tw o pole wiring m6 m5 to 4th element h h (t wo timings) 24a34-5 m2 m1 to f an inter loc k m4 m3 to 3rd element h h one pole to w2 of 24va c w all ther mostat tw o-st a ge room ther mostat option after 2nd element to w1 of 24va c w all ther mostat to 2nd element to common of 24v transf or mer tw o pole wiring m6 m5 to 4th element h h (t wo timings) 24a34-5 m2 m1 to f an inter loc k m4 m3 to 3rd element h h one pole to w2 of 24va c w all ther mostat tw o pole m6 m5 h h (t wo timings) 24a34-5 m2 m1 m4 m3 h h one pole to f an & 1st element tw o-st a ge room ther mostat option after 2nd element do tted line between "h" terminal is a fa ct or y-inst alled jumper for five element furnaces combination fan and heater loads separate fan and heater loads tw o pole m8 m7 to 3rd element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to f an & 1st element m4 m3 to 2nd element h h tw o pole m6 m5 to common of 24v transf or mer tw o pole wiring m6 m5 to 5th element h h (t wo timings) 24a34-5 m2 m1 to f an inter loc k m4 m3 to 4th element h h one pole to w2 of 24va c w all ther mostat tw o-st a ge room ther mostat option after 3rd element tw o pole m8 m7 to 3rd element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to fa n m4 m3 to 2nd element h h tw o pole m6 m5 to common of 24v transf or mer to 5th element to f an inter loc k to 4th element to w2 of 24va c w all ther mostat tw o pole wiring m8 m7 h h (t wo timings) 24a34-6 m2 m1 m4 m3 h h tw o pole m6 m5 to 1st element tw o-st a ge room ther mostat option after 2nd element
tw o pole m8 m7 to 5th element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to f an & 1st element m4 m3 to 4th element h h tw o pole m6 m5 to common of 24v transf or mer to 7th element to f an inter loc k to 6th element to w2 of 24va c w all ther mostat tw o pole m8 m7 h h (t wo timings) 24a34-6 m2 m1 m4 m3 h h tw o pole m6 m5 to 3rd element tw o pole wiring m6 m5 h h (t wo timings) 24a34-5 m2 m1 to f an inter loc k m4 m3 h h one pole to w2 of 24va c w all ther mostat to common of 24v transf or mer to 2nd element tw o-st a ge room ther mostat option after 3rd or 5th element tw o pole m8 m7 to 5th element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to fa n m4 m3 to 4th element h h tw o pole m6 m5 to common of 24v transf or mer to 7th element to f an inter loc k to 6th element to w2 of 24va c w all ther mostat tw o pole m8 m7 h h (t wo timings) 24a34-6 m2 m1 m4 m3 h h tw o pole m6 m5 to 3rd element wiring to f an inter loc k to w2 of 24va c w all ther mostat to common of 24v transf or mer to 2nd element tw o-st a ge room ther mostat option after 3rd or 5th element tw o pole m8 m7 h h (t wo timings) 24a34-6 m2 m1 m4 m3 h h tw o pole m6 m5 to 1st element for six element furnaces combination fan and heater loads separate fan and heater loads do tted line between "h" terminal is a fa ct or y-inst alled jumper tw o pole m8 m7 to 4th element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to f an & 1st element m4 m3 to 3rd element h h tw o pole m6 m5 to common of 24v transf or mer to 6th element to f an inter loc k to 5th element to w2 of 24va c w all ther mostat tw o pole wiring m8 m7 h h (t wo timings) 24a34-6 m2 m1 m4 m3 h h tw o pole m6 m5 to 2nd element tw o-st a ge room ther mostat option after 3rd element tw o pole m8 m7 to 4th element h h to w1 of 24va c w all ther mostat (t wo timings) 24a34-6 m2 m1 to fa n m4 m3 to 3rd element h h tw o pole m6 m5 to common of 24v transf or mer to 6th element to f an inter loc k to 5th element to w2 of 24va c w all ther mostat tw o pole m8 m7 h h (t wo timings) 24a34-6 m2 m1 m4 m3 h h tw o pole m6 m5 to 2nd element tw o pole wiring m6 m5 h h (t wo timings) 24a34-6 m2 m1 to f an inter loc k m4 m3 h h one pole to w2 of 24va c w all ther mostat to common of 24v transf or mer to 1st element tw o-st a ge room ther mostat option after 2nd or 4th element for seven element furnaces combination fan and heater loads separate fan and heater loads wiring diagrams white-rodgers is a division of emerson electric co. the emerson logo is a trademark and service mark of emerson electric co. www.white-rodgers.com www.emersonclimate.com
mouser electronics authorized distributor click to view pricing, inventory, delivery & lifecycle information: ? 24a34-3? 24a34-2? 24a34-4? 24A34-1? 24a34-6? 24a34-5
|
