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Product Specifications:
| Item | Universal Ignition Control |
| Amps | 0.45A |
| Automatic Reset Time | 1 hr. |
| Board Type | Integrated Board |
| Compatible With Brand | Goodman, Lennox, Trane, White-Rodgers |
| Control Voltage | 24V AC |
| Control Volts | 24 |
| Cool Delay To Fan Off | 60 sec. |
| Cool Delay To Fan On | 5 sec. |
| Depth | 1 1/4" |
| Electrical Connection Type | 1/4" Spade Terminals, Molex Plug |
| Flame Sensor Output Amps | 0.3 µA |
| For Fuel Type | LP, Natural Gas |
| For Use With | Residential, Commercial Heating Equipment |
| Frequency | 50/60 Hz |
| Gas Type | Liquid Propane, Natural Gas |
| Heat Delay To Fan Off | 180 sec. |
| Heat Delay To Fan On | 45 sec. |
| Height | 8" |
| Igniter Warm Up Time | 17 sec. |
| Ignition Cycle Time | 90 Seconds (Hsi), 15 Seconds (Pre-Purge), 15 Seconds (Post Purge) |
| Included | Ignitor |
| Lead Length | 15 1/2" |
| Lock Out Time | 5 min. |
| Main Valve Amps Output | 1.5A |
| Max. Input Amps | 45A |
| Max. Operating Temp. | 175°F |
| Min. Operating Temp. | -40°F |
| No. Of Fan Speeds | 3 |
| No. Of Retries | 2 |
| Operating Temp. | -40°F to +175°F |
| Overall Depth | 1 1/4" |
| Overall Height | 8" |
| Overall Width | 5 1/4" |
| Pre-purge Time | 15 sec. |
| Product Datasheet | white-rodgers-21v51u-843.pdf |
| Product Type | Integrated Furnace Control |
| Replacement For Oem Part No. | 18M9901, 20300002, 20300004, 20300006, 20300006S, 21V51U-843, 49M5901, 50V51-243, 50V51-288, 50V51-289, 50V51-290, 50V51-507, 50V61-120, 50V61-143, 50V61-288, 50V61-289, 50V61-480, 50V61-486, 50V61-507, B1809925, B1809927, B1809927S, CNT03078, CNT04018, CNT04352, D156245P01, D34142P01, KIT15815, PCB00106, PCB00106S, PCBB0106, PCBB0106S, PCBB0107S, X13650840010 |
| Replacement For Oem Part Number | 18M9901, 20300002, 20300004, 20300006, 20300006S, 21V51U-843, 49M5901, 50V51-243, 50V51-288, 50V51-289, 50V51-290, 50V51-507, 50V61-120, 50V61-143, 50V61-288, 50V61-289, 50V61-480, 50V61-486, 50V61-507, B1809925, B1809927, B1809927S, CNT03078, CNT04018, CNT04352, D156245P01, D34142P01, KIT15815, PCB00106, PCB00106S, PCBB0106, PCBB0106S, PCBB0107S, X13650840010 |
| Replacement Type | Universal |
| Thermostat Anticipator Setting | No Thermostat Anticipator |
| Width | 5 1/4" |
Shipping Info:
| Ship weight (kg) | 0.7 |
| Ship height (cm) | 6.1 |
| Ship length (cm) | 27.94 |
| Ship width (cm) | 24.89 |
| HS code | 9032896025 |
| Country of Origin | MX |
Product Details:
- Electrical Ratings (24 VAC)
- Igniter Warm-Up Time (Sec.) (17)
- Prepurge Time (15 Sec.)
- Retries (2)
Documentation:
Product Variants
| Product | Model | Control Voltage | Amps | Depth | Height | Overall Width | Overall Height | Overall Depth | Replacement Type | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
21M51U-843 | 24V AC | 0.45A | 1 1/4" | 8" | 5 1/4" | 8" | 1 1/4" | Universal | €402.14 | |
![]() |
50D50-843 | 24 | 0.2A | 1 1/2" | 4 1/8" | 4 1/8" | 4 1/8" | 1 1/2" | Oem | - | RFQ
|
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WHITE-RODGERS 21V51U-843 Furnace Control, Universal, 24 V AC, 5 Minute Lockout, 15 Second Pre Purge
€465.10 /unit
