R4750B220-2 ignition R4750B / C burner controller R4750B / C is a medium-sized gas burning combustion safety control device can be controlled / h below the combustion device heat 580KW, which provides automatic ignition combustion device control and security monitoring. Structural elements of the product design and reliability ensure the proper operation of the combustion device sequence. Specification Model R4750B R4750C combination flame detectors C7007A.C7008A C7027A.C7035A maximum power consumption 7W + 25% Ambient temperature -20 ~ + 60 ℃ Humidity 90% RH.40 ℃ Weight 680g Flame / alarm indicator light: normal combustion / flash: normal combustion: fire off / ignition: ignition failure Contact Specification Terminal no load contact capacity 5 ignition transformer R4750B: 350VA R4750C: 250VA 3 pilot valve 200VA 4 main valve 200VA (Note) A1, A2 Alarm 75VA election Meter Model Power (50 / 60Hz) in chronological order (room temperature, humidity, rated voltage) prepurging ignition lock test point of the main fire flame response R4750B108-2 100Vac 33 ± 8S 4 ± 1S 11 ± 4S Max.23S 1.5 ± 0.5 S (flame current 2μA time) R4750B208-2 200Vac Model Power (50 / 60Hz) in chronological order (room temperature, humidity, rated voltage) prepurging test firing a single control point to lock the main fire flame response R4750C1007 100Vac 2.5 ± 1.5S 4 ± 1S 5 ± 1S 7.5 ± 2.5S Max.23S 1.5 ± 0.5S (flame current 5.5μA) R4750C1015 200Vac R4750C1023 100Vac 33 ± 6S R4750C1031 200Vac R4750C1049 100Vac 40 ± 20S R4750C1056 200Vac welcome advice! R4715B220, R4715B1011-1 combustion safety control combustion controller, R4715B / C burner controller R4715B / C is the amount of combustion in 175KW / h below the combustion safety control of small and medium gas combustion device, which provides automatic ignition combustion device control and safety monitoring, reliability of the product design and components to ensure that the combustion operation of the device in the correct order. Specifications Contact Specification combination flame detector flame detection lever (C7007A.C7008A) Terminal no load contact capacity of a standard flame current 2 ~ 6μA 10 blower motor 120Aac.2A 240Aac.1A Recommended surge absorber models 968019-0019 ignition transformer 250VA consumption Maximum power 5W + 25% 5 Pilot 100VA Ambient temperature -20 ~ + 60 ℃ 1 main valve 100VA humidity less than 90% RH.40 ℃ 8 alarm fire 75VA Weight 400g / alarm indicator light: normal combustion / Flashing : normal combustion: fire off / ignition: ignition failure Selection Table Model Power (50 / 60Hz) in chronological order (room temperature, humidity, rated voltage) prepurging ignition lock test point of the main fire flame response R4715B1003-1 100Vac 15 ± 4S 4 ± 1S 11 ± 4S 23S maximum 1.5 ± 0.5S (flame current 2μA time) R4715B1011-1 200Vac R4715C1001 100Vac 10 ± 3S 1.2 ± 0.5S Max.0.8s (flame current 2μA time) R4715C1019 200Vac welcome advice!