Pactrol Microgas P25F V20 427001/V20

MicroGasTM P25 Series A Family of Full Sequence Controls Certified to EN 298 : 2003 technology factfile Microcontroller technology lies at the heart of this microgas™ range of full sequence controls, offering a large number of control and timing options not normally available from simpler units. This compact family of control units offer safe start-up and supervision of a wide range of gas burning appliances, for domestic, commercial and industrial applications. An equally wide range of control sequences and timing options are available, all based on an integral spark ignition system. By a combination of hardware and software selection, customers can be offered forced or atmospheric sequences, volatile or non-volatile lockout, a range of spark rates and many timing and logic functions, including multiple ignition attempts and post purge. This 4270 series is CE Certified and fully complies with the requirements of the GAD via EN 298 : 2003. Typical applications • Combination Boilers • Condensing Boilers • Heating Boilers • Water Heaters • Warm Air Heaters • Radiant Tube Heaters key features • Programmable logic and timings • Atmospheric or fanned application • Integral spark and flame detection • Multiple ignition attempts • Volatile or non-volatile lockout • Dual or single probe for ignition and flame detection • Post purge • Compact size • Optional ‘floating supply’ capability for flame detector • Dual, self-checking safety system • CE Certification to EN 298 : 2003 system operation sequence To keep abreast of current developments, controls may be subject to change without notice. Such changes may affect the accuracy of information contained in this data-sheet, and the manufacturers advice should be sought if any problems arise. Pactrol Controls Limited Unit 3, Three Sisters Enterprise Park, Antler Court, Ashton-in-Makerfield, Wigan WN4 8DU, UK Technical specification Electrical Supply Voltage 230 V + 10% - 15% Frequency 50 - 60Hz (+/- 3Hz) Power Consumption 15VA Supply Phase Relationship Sensitive to Live and Neutral phase reversal Internal fuse 2A HPC (20mm) Contact Ratings All relay drives where used 1A Inductive 0.6pf @230V ac Total maximum load current: 2A Ignition Open circuit voltage 15kV Minimum (30pf loading) Spark energy > 4mJ (W.H.I.T.B.) Spark gap tolerance 2.5mm to 4.5mm Spark rate as specified in description of function Flame Detection Principle Rectification Electrode configuration Dual or single probe ignition & detection Flame detector response Flame on = 1 second max Flame off = as specified in description of function Minimum flame current required 1uA @230Vac supply Hardware Options Environmental Conditions The P25 series of controls is available with Ambient temperature range -10oC to 70oC several factory selectable options. These Humidity 90% RH Maximum are shown in the adjacent diagram. “L” Lockout indication with reset (indication and reset are connected to CON5). operation “F” Fanned with optional 2-wire APS (CON4). Connections details “1” Single stage direct burner ignition (valves connected to CON1). “2” Pilot + main burner (all valves connected to CON1). “1+1” Pilot + main burner (pilot valve connected to CON1, main valve to CON3). “X” External isolating transformer for flame detector (connected to CON3). This option can only be selected in conjunction with option “1” or “2”. If this option is not specified then a jumper link must be connected to CON3 in place of the transformer. (See below.) Electrical Supply Options The control can be specified with either: • A fixed phase-earth relationship (the earth is bonded to one of the phases in the property electrical installation). In this case the flame detector circuit is phase sensitive. • An external 230V:230V 2VA transformer with earthed secondary. In this case the flame detector circuit is completely isolated from the mains supply and is non-phase sensitive. (This is for applications where the phase-earth relationship is floating or fixed at mid-rail). • An external link which creates a phase-earth relationship (fitted instead of the external transformer). Timing and Control Options Pre-purge time: 1.5 - 50 seconds Lockout type volatile or non-volatile Wait or pre-purge time for atmospheric burners, is the time from the start signal, to energisation of the ignition device. Appliance type fanned or atmospheric Pre-purge time for fanned appliances, is the time from the air pressure switch closing (signaling sufficient airflow) to energisation APS type 2 or 3 terminal or not present of the ignition device. Number of ignition attempts: 1 - 5 Pre-ignition time: 1.0 - 50 seconds A number of ignition attempts can be programmed into the control Pre-ignition time is the time following the pre-purge period when to allow it to try again if the burner does not light on the first the ignition device, alone, is energised. attempt. Ignition time: 1.0 - 50 seconds Minimum ignition required Ignition time is the time that the ignition device is energised for Tells the control to remove the means of ignition immediately a during ignition, whilst the flame detector signals an absence of flame is detected (or to leave it energised until the end of the flame. ignition period). Safety time: 1.0 - 50 seconds Ignition type: 3/5/12/25/50 Hz Safety time is the time that GV1 is energised for during ignition, whilst the flame detector signals an absence of flame. On flame loss the following events can be programmed to occur: Lock-out Safety GV1 time: 0.3 - 3.0 seconds If the control is programmed to have lock-out on flame loss, then it Safety GV1 time is the time that GV1 remains energised for, after will immediately go to lock-out…