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    HVAC / Boiler Control

    Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.

    Rockwell Disclaimer: The product is used surplus. Radwell is not an authorised surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorised dealers. Because Radwell is not an authorised distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, Radwell makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Radwell also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. Radwell also makes no representations as to your right to install any such firmware on the product. Radwell will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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    46 Results.
    HONEYWELL S984F-1005

    HONEYWELL

    S984F-1005

    STEP CONTROLLER
    ✓ IN STOCK!
    £811.80 Price with VAT: £974.16 Buy Surplus As Low As £394.54 Price with VAT: £473.45
    £394.54 Price with VAT: £473.45
    Repair Yours £343.84 Price with VAT: £412.61
    HONEYWELL ERM5220R1018

    HONEYWELL

    RESIDEO

    ERM5220R1018

    EQUIPMENT REMOTE MODULE, REDLINK, WIRELESS, FOR COMMUNICATION BETWEEN UNIT/COMPRESSOR/BOILER AND THERMOSTAT
    ✓ IN STOCK!
    £166.52 Price with VAT: £199.82 Buy Surplus As Low As £101.97 Price with VAT: £122.36
    £101.97 Price with VAT: £122.36
    Repair Yours Contact Us
    HONEYWELL L60471005

    HONEYWELL

    L60471005

    DISCONTINUED BY MANUFACTURER, SUMMER AND WINTER BOILER CONTROL
    ✓ IN STOCK!
    £123.27 Price with VAT: £147.92 Buy Surplus As Low As £44.94 Price with VAT: £53.92
    £44.94 Price with VAT: £53.92
    HONEYWELL RA890G1229

    HONEYWELL

    RA890G1229

    20 VAC PROTECTORELAY W/ 0.8 SECOND FFTR (15 SAFETY SWITCH TIMING)
    ✓ IN STOCK!
    £4,845.17 Price with VAT: £5,814.20 Buy Surplus As Low As £2,850.65 Price with VAT: £3,420.78
    £2,850.65 Price with VAT: £3,420.78
    Repair Yours £608.50 Price with VAT: £730.20
    HONEYWELL RA890F-1247-3

    HONEYWELL

    RA890F-1247-3

    DISCONTINUED BY MANUFACTURER, FLAME PROTECTOR RELAY, SAFTEY, RESPONSE 3 SECONDS, 120V
    ✓ IN STOCK!
    Buy Surplus As Low As £728.80 Price with VAT: £874.56
    £728.80 Price with VAT: £874.56
    Repair Yours £604.65 Price with VAT: £725.58
    HONEYWELL 04905-X50-33-333-X7

    HONEYWELL

    04905-X50-33-333-X7

    CONDUCTIVITY CELL, HVAC, BOILER CONTROL, HVAC, BOILER CONTROL
    £15.69 Price with VAT: £18.82 Buy Surplus As Low As £9.71 Price with VAT: £11.65
    £9.71 Price with VAT: £11.65
    Repair Yours Contact Us
    HONEYWELL S8600H

    HONEYWELL

    S8600H

    DISCONTINUED BY MANUFACTURER, IGNITION MODULE, 100 PERCENT SHUTOFF IP, 24 V AC, 60 HZ, 1 A MAX, 90 SECOND L.O.
    Buy Surplus As Low As £110.31 Price with VAT: £132.37
    £110.31 Price with VAT: £132.37
    HONEYWELL S984-D1049

    HONEYWELL

    S984-D1049

    HONEYWELL S984D1049 - STEP CONTROLLER
    Buy Surplus As Low As £2,442.54 Price with VAT: £2,931.05
    £2,442.54 Price with VAT: £2,931.05
    Repair Yours £2,054.13 Price with VAT: £2,464.95
    HONEYWELL RMA300-SM-F3-MB-TC-TG-F1C3

    HONEYWELL

    RMA300-SM-F3-MB-TC-TG-F1C3

    PERCENT METER ANALOG EXPLOSION PROOF
    £319.10 Price with VAT: £382.92 Buy Surplus As Low As £191.46 Price with VAT: £229.75
    £191.46 Price with VAT: £229.75
    Repair Yours £200.00 Price with VAT: £240.00
    HONEYWELL RA890F-1478

    HONEYWELL

    RA890F-1478

    DISCONTINUED BY MANUFACTURER, PROTECTORELAY, FLAME SAFETY, FLAME CONTROL, 120 VAC, FLAME RESPONSE 15 SEC, SPDT ALARM CONTACTS
    Buy Surplus As Low As £1,078.97 Price with VAT: £1,294.76
    £1,078.97 Price with VAT: £1,294.76
    Repair Yours £616.20 Price with VAT: £739.44
    HONEYWELL RMA300-SM-MB-F103

    HONEYWELL

    RMA300-SM-MB-F103

    PERCENT METER ANALOG EXPLOSION PROOF
    £349.91 Price with VAT: £419.89 Buy Surplus As Low As £210.54 Price with VAT: £252.65
    £210.54 Price with VAT: £252.65
    Repair Yours £200.00 Price with VAT: £240.00
    HONEYWELL ABC900A1000

    HONEYWELL

    ABC900A1000

    ADVANCED BOILER CONTROL BASE SYSTEM
    £7,867.68 Price with VAT: £9,441.21 Buy Surplus As Low As £4,720.76 Price with VAT: £5,664.91
    £4,720.76 Price with VAT: £5,664.91
    Repair Yours £3,918.53 Price with VAT: £4,702.23
    HONEYWELL ABC900B1009

    HONEYWELL

    ABC900B1009

    ADVANCE BOILER CONTROL BASE CONFIGURATION WITH OPTIONS
    £13,487.02 Price with VAT: £16,184.42 Buy Surplus As Low As £8,092.51 Price with VAT: £9,711.01
    £8,092.51 Price with VAT: £9,711.01
    Repair Yours £6,717.37 Price with VAT: £8,060.84
    HONEYWELL AQ25242B

    HONEYWELL

    AQ25242B

    UNIV.INJCTN/MIX BOILRRESETCONT
    £626.70 Price with VAT: £752.03 Buy Surplus As Low As £376.47 Price with VAT: £451.76
    £376.47 Price with VAT: £451.76
    Repair Yours £312.97 Price with VAT: £375.57
    HONEYWELL AQ25A44B

    HONEYWELL

    AQ25A44B

    4ZONESETBACKBOILERCONTROL
    £302.52 Price with VAT: £363.02 Buy Surplus As Low As £181.51 Price with VAT: £217.81
    £181.51 Price with VAT: £217.81
    Repair Yours £151.63 Price with VAT: £181.96
    HONEYWELL AQ25244B

    HONEYWELL

    AQ25244B

    UNIVINJ/MIXBOILERRESETCTRL
    £528.10 Price with VAT: £633.72 Buy Surplus As Low As £317.46 Price with VAT: £380.95
    £317.46 Price with VAT: £380.95
    Repair Yours £263.68 Price with VAT: £316.41
    HONEYWELL AQ15540B

    HONEYWELL

    AQ15540B

    AQUATROL ZONING MODULE
    £143.42 Price with VAT: £172.10 Buy Surplus As Low As £86.65 Price with VAT: £103.98
    £86.65 Price with VAT: £103.98
    Repair Yours Contact Us
    HONEYWELL 118702E

    HONEYWELL

    118702E

    DISCONTINUED BY MANUFACTURER, REMOTE RESET COVER, FOR USE WITH RA890F,G AND R4795 SERIES
    Buy Surplus As Low As £252.60 Price with VAT: £303.12
    £252.60 Price with VAT: £303.12
    Repair Yours £200.00 Price with VAT: £240.00
    HONEYWELL W8735ER1000

    HONEYWELL

    W8735ER1000

    AQUA OUTDOOR, RESET WIRELESS MODULE
    £184.50 Price with VAT: £221.40 Buy Surplus As Low As £111.30 Price with VAT: £133.56
    £111.30 Price with VAT: £133.56
    Repair Yours £150.00 Price with VAT: £180.00
    HONEYWELL RMA300-DM-SB-TG-2J

    HONEYWELL

    RMA300-DM-SB-TG-2J

    DIGITAL REMOTE METER ASSEMBLY EXPLOSION PROOF
    £348.83 Price with VAT: £418.59 Buy Surplus As Low As £209.15 Price with VAT: £250.98
    £209.15 Price with VAT: £250.98
    Repair Yours £174.79 Price with VAT: £209.75
    HONEYWELL 1187028

    HONEYWELL

    1187028

    REMOTE RESET COVER FOR RA890 120V 50-60HZ
    £130.72 Price with VAT: £156.86 Buy Surplus As Low As £78.43 Price with VAT: £94.12
    £78.43 Price with VAT: £94.12
    Repair Yours Contact Us
    HONEYWELL AQ25A4B2

    HONEYWELL

    AQ25A4B2

    BOILER CONTROL PANEL
    Buy Surplus As Low As £439.21 Price with VAT: £527.05
    £439.21 Price with VAT: £527.05
    Repair Yours £366.01 Price with VAT: £439.21
    HONEYWELL AQ2558P2X

    HONEYWELL

    AQ2558P2X

    BOILER CONTROL PANEL
    Buy Surplus As Low As £295.79 Price with VAT: £354.95
    £295.79 Price with VAT: £354.95
    Repair Yours £246.50 Price with VAT: £295.79
    HONEYWELL S8600H-1022

    HONEYWELL

    S8600H-1022

    IGNITION MODULE FOR FURNACE- 100PERCENT SHUTOFF IP
    Buy Surplus As Low As £125.49 Price with VAT: £150.59
    £125.49 Price with VAT: £150.59
    Repair Yours £150.00 Price with VAT: £180.00
    HONEYWELL 0620820U

    HONEYWELL

    0620820U

    GAS BURNER SAFETY CONTROL BOX, 5AMP, 220/240 VAC, 50 HZ, 10VA, IP40, MMI-810.1-MOD-40-34
    £303.70 Price with VAT: £364.44 Buy Surplus As Low As £182.66 Price with VAT: £219.19
    £182.66 Price with VAT: £219.19
    Repair Yours £200.00 Price with VAT: £240.00
    HONEYWELL S9301A1001

    HONEYWELL

    S9301A1001

    DISCONTINUED BY MANUFACTURER, BOILER CONTROL, INTEGRATED, 24VAC, .5/.7/.8AMP
    Buy Surplus As Low As £424.27 Price with VAT: £509.12
    £424.27 Price with VAT: £509.12
    Repair Yours £335.38 Price with VAT: £402.46
    HONEYWELL 34X7501

    HONEYWELL

    NOVAR CONTROLS CORP

    34X7501

    DISCONTINUED BY MANUFACTURER, PC BOARD, CONTROL BOARD, STAND-OFF MOUNT
    Buy Surplus As Low As £224.50 Price with VAT: £269.40
    £224.50 Price with VAT: £269.40
    Repair Yours £200.00 Price with VAT: £240.00
    HONEYWELL L4189B-2012

    HONEYWELL

    L4189B-2012

    DISCONTINUED BY MANUFACTURER, WATER TEMPERATURE CONTROL, AQUASTAT, 100-230 FAHRENHEIT, SPST SWITCHING, REMOTE BULB, SCREWDRIVER SLOT, REMOTE MOUNT
    Buy Surplus As Low As £45.03 Price with VAT: £54.04
    £45.03 Price with VAT: £54.04
    HONEYWELL BCU 480Q3P1C0D1000K1E1/LM400QF3O0E1

    HONEYWELL

    KROMSCHRODER

    BCU 480Q3P1C0D1000K1E1/LM400QF3O0E1

    BURNER CONTROL UNIT, 115VAC -15/+10%, 50/60HZ, KS88683428
    £2,819.01 Price with VAT: £3,382.81 Buy Surplus As Low As £1,691.85 Price with VAT: £2,030.22
    £1,691.85 Price with VAT: £2,030.22
    Repair Yours £1,404.28 Price with VAT: £1,685.13
    HONEYWELL AQ2511B0

    HONEYWELL

    AQ2511B0

    BOILER CONTROL EXPANDABLE RESET PANEL LCD
    Buy Surplus As Low As £277.87 Price with VAT: £333.44
    £277.87 Price with VAT: £333.44
    Repair Yours £231.56 Price with VAT: £277.87
    HONEYWELL AQ2514B2

    HONEYWELL

    AQ2514B2

    BOILER RESET CONTROL, CONTROL PANEL FOR 4 ZONES, 2 WIRE, 120 VAC, 50/60 HZ
    Buy Surplus As Low As £430.41 Price with VAT: £516.49
    £430.41 Price with VAT: £516.49
    Repair Yours £362.02 Price with VAT: £434.42
    HONEYWELL AQ2514B4

    HONEYWELL

    AQ2514B4

    BOILER CONTROL RESET LCD W/END SWITCHES
    Buy Surplus As Low As £394.39 Price with VAT: £473.27
    £394.39 Price with VAT: £473.27
    Repair Yours £328.66 Price with VAT: £394.39
    HONEYWELL AQ15200B

    HONEYWELL

    AQ15200B

    DISCONTINUED BY MANUFACTURER, AQUATROL INJECT/MIX BOILER RESET CONTROL MODULE, 24VAC, 7 DAY SETBACK, UP TO TWO SETBACK PERIODS A DAY, FOR USE WITH AQ2000 PANELS
    Buy Surplus As Low As £242.01 Price with VAT: £290.42
    £242.01 Price with VAT: £290.42
    Repair Yours £201.68 Price with VAT: £242.01
    HONEYWELL AQ25144B

    HONEYWELL

    AQ25144B

    BOILERRESETCTRLW/PRIORVLVW/SWS
    £419.04 Price with VAT: £502.85 Buy Surplus As Low As £251.72 Price with VAT: £302.07
    £251.72 Price with VAT: £302.07
    Repair Yours £209.15 Price with VAT: £250.98
    HONEYWELL AQ25142B

    HONEYWELL

    AQ25142B

    BOILERRESETCTRL W/DHW PRIORITY
    £646.86 Price with VAT: £776.24 Buy Surplus As Low As £388.42 Price with VAT: £466.10
    £388.42 Price with VAT: £466.10
    Repair Yours £322.68 Price with VAT: £387.22
    HONEYWELL AQ2524M4

    HONEYWELL

    AQ2524M4

    BOILER CONTROLLER
    Buy Surplus As Low As £29.13 Price with VAT: £34.96
    £29.13 Price with VAT: £34.96
    HONEYWELL W8735Y1000

    HONEYWELL

    RESIDEO

    W8735Y1000

    AQUA OUTDOOR RESET WIRELESS KIT
    £327.17 Price with VAT: £392.60 Buy Surplus As Low As £196.45 Price with VAT: £235.74
    £196.45 Price with VAT: £235.74
    Repair Yours £163.58 Price with VAT: £196.30
    HONEYWELL 070209-0001

    HONEYWELL

    070209-0001

    BOILER IGNITION ELECTRODE
    Buy Surplus As Low As £53.78 Price with VAT: £64.54
    £53.78 Price with VAT: £64.54
    Repair Yours Contact Us
    HONEYWELL AQ2524M2

    HONEYWELL

    AQ2524M2

    BOILER CONTROL PANEL
    Buy Surplus As Low As £717.08 Price with VAT: £860.49
    £717.08 Price with VAT: £860.49
    Repair Yours £597.56 Price with VAT: £717.08
    HONEYWELL 817-00234

    HONEYWELL

    817-00234

    DISCONTINUED BY MANUFACTURER, HONEYWELL , 817-00234, 81700234, PRESSURE CONTROL SWITCH, 0-300PSI
    Buy Surplus As Low As £60.61 Price with VAT: £72.73
    £60.61 Price with VAT: £72.73
    HONEYWELL MCBA14A1004

    HONEYWELL

    MCBA14A1004

    DISCONTINUED BY MANUFACTURER, ELECTRONIC BOILER CONTROLLER, 115 VAC MAINS, 60 HZ, 5 SEC FIRST SAFETY TIME, 10 SEC PREPURGE TIME, (MCBA14201D)
    Buy Surplus As Low As £1,213.39 Price with VAT: £1,456.07
    £1,213.39 Price with VAT: £1,456.07
    Repair Yours £762.55 Price with VAT: £915.06
    HONEYWELL MCBA14201D

    HONEYWELL

    MCBA14201D

    DISCONTINUED BY MANUFACTURER, ELECTRONIC BOILER CONTROLLER, 115 VAC MAINS, 60 HZ, 5 SEC FIRST SAFETY TIME, 10 SEC PREPURGE TIME, (MCBA14A1004)
    Buy Surplus As Low As £1,235.52 Price with VAT: £1,482.63
    £1,235.52 Price with VAT: £1,482.63
    Repair Yours £739.49 Price with VAT: £887.38
    HONEYWELL S9301A1027

    HONEYWELL

    S9301A1027

    DISCONTINUED BY MANUFACTURER, INTEGRATED BOILER CONTROL, .2AMP, 24V, 60HZ
    Buy Surplus As Low As £228.88 Price with VAT: £274.66
    £228.88 Price with VAT: £274.66
    Repair Yours £200.27 Price with VAT: £240.32
    HONEYWELL 04905-X50-33-333-20-000-000-000

    HONEYWELL

    04905-X50-33-333-20-000-000-000

    DISCONTINUED BY MANUFACTURER, 4905 CONDUCTIVITY CELL, CELL CONSTANT: 50, ELECTRODE MATERIAL: NICKEL, AUTOMATIC TEMP COMPENSATION: FOR APT2000/4000CC AND UDA2182, LEADWIRE LENGTH: 20 FT
    Buy Surplus As Low As £528.27 Price with VAT: £633.92
    £528.27 Price with VAT: £633.92
    Repair Yours £442.90 Price with VAT: £531.48
    HONEYWELL CD.052.002.325

    HONEYWELL

    CD.052.002.325

    DISCONTINUED BY MANUFACTURER, PRINTED CIRCUIT BOARD, FOR BOILER CONTROL, (FPL 8101)
    Buy Surplus As Low As £237.68 Price with VAT: £285.22
    £237.68 Price with VAT: £285.22
    Repair Yours £200.27 Price with VAT: £240.32
    HONEYWELL 34X7301

    HONEYWELL

    34X7301

    DISCONTINUED BY MANUFACTURER, PC BOARD, CONTROL BOARD, STAND-OFF MOUNT
    Buy Surplus As Low As £280.80 Price with VAT: £336.96
    £280.80 Price with VAT: £336.96
    Repair Yours £240.32 Price with VAT: £288.38
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