Gas Protector Relay

Key Product Features

  • Model and Description
    • UK-202F: Protectorelay for Combustion Safety Control & Automatic Operation of Gas burners with flame rod (current sensor). Valve 2 stage with pilot valve
    • UK-202U: Protectorelay for Combustion Safety Control & Automatic Operation of Gas burners with Ultraviolet flame Detector (C7027A or C7035A). Valve 2 stage with pilot valve
  • Characteristics
    • Power supply: AC-Voltage 200 -240V, Frequency: 50-60 Hz
    • Electricity consumption: Below 4.5VA
    • Ambient temperature: 20 °C to 60 °C (While not frozen and not dew-drop)
    • Standard pre-purge (15s) or special pre–purge (35s)
  • Repair and Maintenance
    • Cut off electric power immediately and check the cause when the alarm beeps during the operation of device and put the reset-switch on after taking the necessary steps

Instructions

Model

Description

UK-202F

Protectorelay for Combustion Safety Control and Automatic Operation of Gas burners with flame rod (current sensor) Valve 2 stage with pilot valve

UK-202U

Protectorelay for Combustion Safety Control and Automatic Operation of Gas burners with Ultraviolet Flame Detector (C7027A or C7035A). Valve 2 stage with pilot valve

Characteristics

  • Power supply: AC 200-240V, 50-60Hz
  • Electricity consumption: Below 4.5VA
  • Ambient temperature: 20°C to 60°C (While not frozen and not dewdrop
  • Special pre-purge setting: Standard pre-purge (15s) or special pre-purge (35s)

SEQUENCE \ MODEL

UK-202 F

(Available special time control)

UK 202 U

(Available special time control)
Pre-Purge Standard: 15sec ± 4sec

Special: 35sec ± 5sec

 Standard: 15sec ± 4sec

Special: 35sec ± 5sec
Post-Purge 6sec ± 2sec 6sec ± 2sec
Safety-Switching 3sec ± 1sec 3sec ± 1sec
Fire Detector Response Below 1sec Below 1sec
Suspect Fire Below 2sec Below 2sec
Post-Purge (Lock-out) 10–25sec (setting 15sec) 10-25sec (setting 15 sec)
Flame Rod Flame UV TRON
Kanthal C7027, C7035
Fire Detector Ignition: Over 2uA Ignition: Over 1.5uA
Extinction: Below 0.7uA Extinction: Below 1uA
Burner: Over 5uA Burner: Over 3uA
Maximum load Fan Motor: 250 VA Fan Motor: 250 VA
(Use separate relay s/w for more) IG-trans: 250 VA IG-trans: 250 VA
Valve: 100VA Valve: 100VA
Alarm: 100VA Alarm: 100VA

Circuit connections with relative devices

  • Electric Circuit: Refer to circuit diagram inside products
  • Wiring Standard: Use UL AWAG #18

Operation

  • Checkpoint:
    • Before connecting the device to the electric power line, check carefully whether wires are duly connected
    • Use the device within a range of 85 to 110 percent of the nominal voltage
    • The device may be wrong operated or damaged when electric voltage is below or over the range
  • Reset:
    • Put the switch on after waiting for 2 seconds for re-operation

Repair and Maintenance

  • Cut off electric power immediately and check the cause when the alarm beeps during the operation of device and put the reset-switch on after taking the necessary steps
  • Checking of the device might cause a danger of accidents or its damages. All maintenance and check must be made by qualified personnel with a knowledge of the device