Source 1 Product Catalog 2017 Page 81 Air Conditioning & Heating Controls

81 Model 24A34 Electric Heat Sequencers Direct replacement for most fan/heat sequencing functions. Terminal markings are equivalent to competitive types and allow one wiring method for various sources of sequencers. Features: Replaces Honeywell, Klixon (Texas Instruments), MARS, TOD, GEMLINE types. Solid-state reliability. Ambient rated from -50 to +165F. 24V input control. Multi-poise mounting. Any contacts (except M1 and M2) can be used as auxiliary contacts. Double quick-connect terminals for combination loads. U.L. Component recognized. 24A34-15 Normally Open Contacts 1-3 Used in heat pump air handler applications. Provides a delay off to the blower motor in cooling mode. Single pole double throw. Specications: Electrical Ratings Single Load Contact Ratings (All Models): SOURCE 1 PART NO. HIGH LIMIT TEMPERATURE RANGE ELEMENT INSERTION LENGTH MLP S1-24A34-1 1 12.61 S1-24A34-14 4 5 39.14 S1-24A34-15 1 32.93 S1-24A34-2 1 12.61 S1-24A34-3 1 2 14.82 S1-24A34-4 1 2 14.82 S1-24A34-5 2 3 22.68 S1-24A34-6 2 4 25.07 HEAT SEQUENCERS Electric Heating Controls VAC RESISTIVE (NON-INDUCTIVE) MOTOR RATINGS (INDUCTIVE) PILOT DUTY WATTS AMPS FULL LOAD LOCKED ROTOR 120 3000 25.0 10.0A (14.0A FOR 24A34-15) 60.0A (72 FOR 24A34-15) 125 VA 240 6000 25.0 5.0A (7 FOR 24A34-15) 30.0A (42 FOR 24A34-15) 125 VA 480 6000 12.5 3.0A 18.0A 480 VA Combined Load Rating (All Models): 30A @ 240 VAC - TOTAL; 23 A Non-inductive + 7 FLA/42 LRA Inductive. ON TIME - Elapsed time to make contacts after heater is energized (Min. to Max.). OFF TIME - Elapsed time to break contacts after heater is de-energized (Min. to Max.). TIMINGS ON OFF SOURCE 1 PART NO. M1-M2 M3-M4 M5-M6 M7-M8 M9-M10 M1-M2 M3-M4 M5-M6 M7-M8 M9-M10 S1-24A34-1 1-20 -- 40-110 -- S1-24A34-2 -- 30-90 -- 1-30 -- S1-24A34-3 1-20** -- 40-110** -- S1-24A34-4 -- 30-90** -- 1-30** -- S1-24A34-5 1-110** 1-110 -- 1-110** 1-110 -- S1-24A34-6 1-110** -- 1-110** -- S1-24A34-14 1-160** 1-160 1-160** 1-160 S1-24A34-15 1-60 (ON 1-3) 75-95 (OFF 1-3) *M1-M2 and M3-M4 are always first switches to turn ON and last to turn OFF. All other switches are random ON and random OFF. 24A34-14 Switch contacts designated F1-F2 instead of M1-M2. **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 interlock should be the M1-M2 contacts of the second or third sequencer. All M1-M2 contacts are wired to the blower motor so that any sequencer that is energized will keep the blower ON.

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