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Lochinvar RLY2402 Module, Ignition, ALL Used in the following models: 501, 991, 1801, 651, 1261, 2071, 751, 1441, IB 1500, IW 1500, Intelli-Fin IB 1500-2000, Intelli-Fin IW 1500-2000, IB 1700, IW 1700, IB 2000, IW 2000, CB 497, CW 497, CB 647, CW 647, CB 747, CW 747, CB 987, CW 987, CB 1257, CW 1257, CB 1437, CW 1437, CB 1797, CW 1797, CB 2067, CW 2067, CH 401, 401, CH 501, 501, CH 651, 651, CH 751, 751, CH 991, 991, CH 1261, 1261, CH 1441, 1441, CH 1801, 1801, CH 2071, 2071, PB 501, PF 501, PB 751, PF 751, PB 1001, PF 1001, PB 1300, PF 1300, PB 1500, PF 1500, PB 1700, PF 1700, PB 2000, PF 2000, CB 986, CW 986, CB 1256, CW 1256, CB 1436, CW 1436, CB 1796, CW 1796, CB 2066, CW 2066, CB 495, CW 495, CB 645, CW 645, CB 745, CW 745, Lochinvar Parts, Pool Heater Parts
INPUT VOLTAGES
Control
Line (L1 & L2 to Ignitor)
Thermostat
Pressure Switch (Airflow)
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18 to 30 VAC, 400mA max
(not including gas valve)
120 VAC standard, 24 VAC and 240 VAC
models available
18 to 30 VAC 30mA max (not incl. Gas Valve)
18 to 30 VAC 25mA max
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OUTPUT RATINGS
Combustion Blower
Hot Surface Ignitor
Gas Valve Rating
Lockout & Pre-Purge Indicators
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15A max (0.6 pf) or 1/2 HP @ 120 or 240 VAC
5.0A max @ 24, 120 or 240 VAC
5.0A max (0.6 pf) @ 24 VAC
1.0A max @ 24 VAC
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-40oF to +165oF (-40oC to +73oC)
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FLAME FAILURE
RESPONSE TIME
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Natural, LP, or manufactured
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Conformal coated to operate non-condensing
to 95% R.H. Care must be taken to protect
module from direct exposure to water
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8oz including options and cover
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Ignition and Control Timings
Prepurge : 15 Seconds
Hot Surface Ignitor Heat-up Time : 25 - 35 seconds
Main Burner Flame Establishing Period : 4 Seconds
Failure Response Time : 0.8 Seconds at less than 1 μA flame current
Flame Current : 2 μA or greater
Post-purge : 30 seconds
Pump Delay Timing : 30 Seconds after burner shutdown (on boilers, when equipped with an optional, factory supplied pump delay or
intermittent pump control system only).
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Troubleshooting
The Locinvar ignition device not only conserves energy but protects life and property. When additional heat is needed, the combustion air blower starts a prepurge cycle for about 15 seconds. Upon validation of air flow, the air proving switch makes the connection to allow the igniter to begin it's ignition cycle. To assure safe operation, the gas valve cannot open until the igniter is proven. The igniter keeps building and personal safe because this electronic device will close the main gas valve within 0.8 seconds whenever the flame is interrupted. Main burners automatically light when the igniter is energized and prepurge is complet. This control performs its own safety check and opens the main valve only after the igniter is proven to be capable of igniting the gas.
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