Table of Contents
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Use, features
Use
Features
Supplementary documentation
CC1N7101en
27.11.2008
Burner Controls
Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of
small to medium capacity, operation, with or without fan in intermittent.
The LME... and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products.
LME... burner controls are used for the startup and supervision of 1- or 2-stage gas or
gas / oil burners in intermittent operation. The flame is supervised by an ionization
probe or flame detector QRA... with ancillary unit AGQ3...A27 for gas / oil forced draft
burners or blue–burning flames with blue-flame detectors QRC...
In terms of housing dimensions, the LME... are identical with the LGB... and LMG...
burner controls (refer to «Type summary»).
For gas burners with or without fan to EN 298: 2003
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For gas burners with fans conforming to EN 676
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For oil burners to EN 230: 2005
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Undervoltage detection
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Air pressure supervision with functional check of the air pressure switch during
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startup and operation
Electrical remote reset facility
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Multicolor indication of fault status and operational status messages
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Limitation of the number of repetitions
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Accurate control sequence thanks to digital signal handling
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Controlled intermittent operation after 24 hours of continuous operation
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Product Range Overview LME............................................................................... Q7101
7
101
LME...
Building Technologies
HVAC Products
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Table of Contents
Related Manuals for Siemens LME SERIES
Summary of Contents for Siemens LME SERIES
- Page 1 Burner Controls LME... Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of small to medium capacity, operation, with or without fan in intermittent. The LME… and this Data Sheet are intended for use by OEMs which integrate the burner controls in their products.
- Page 2 Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! Do not to open, interfere with or modify the unit! • All activities (mounting, installation and service work, etc.) must be performed by qualified staff •...
- Page 3 Installation notes • Always run the high ignition cables separate from the unit and other cables while observing the greatest possible distance • Do not mix up live and neutral conductors • Install switches, fuses, earthing, etc., in compliance with local regulations •...
- Page 4 Commissioning notes • When commissioning the plant for the first time or when doing maintenance work, make the following safety checks: Safety check to be carried out Anticipated response a) Burner startup with previously inter- LME11… / LME41.051...: rupted line to the flame detector Max.
- Page 5 Standards and certificates Conformity to EEC directives - Electromagnetic compatibility EMC (immunity) 2004/108/EC - Directive for gas-fired appliances 90/396/EEC - Low-voltage directive 2006/95/EC - Directive for pressure devices 97/23/EC ISO 9001: 2000 ISO 14001: 2004 Cert. 00739 Cert. 38233 Identification code to EN 298 / EN 230 LME11…...
- Page 6 Life cycle Burner controls has a designed lifetime* of 250,000 burner startup cycles which, under normal operating conditions in heating mode, correspond to approx. 10 years of usage (starting from the production date given on the type field). This lifetime is based on the endurance tests specified in standard EN230 / EN298 and the table containing the relevant test documentation as published by the European Association of Component Manufacturers (Afecor) (www.afecor.org).
- Page 7 Type summary (other types of burner controls on request) The type references given below apply to the LME… burner control without plug-in base and without flame detector. For ordering information on plug-in bases and other accessories, refer to «Ordering». Type Main Repe- Flame detector...
- Page 8 Type summary (other types of burner controls on request) [cont´d] t1´ Type refer- Main Flame detector min. min. max. approx. approx. approx. approx. Repetition For replacing of ence voltage Burner controls for atmospheric burners LME41.051A2 AC 230 V LME41.052A2 AC 230 V LME41.053A2 Ionization probe (ION) AC 230 V...
- Page 9 Technical data General unit data Mains voltage AC 120 V +10% / -15% AC 230 V +10% / -15% Mains frequency 50...60Hz ±6% Power consumption 12VA External primary fuse (Si) Max. 10A (slow) Mounting position Optional Input current at terminal 12 Max.
- Page 10 Technical data (cont´d) Flame supervision with ionization probe At mains voltage UN = AC 120 V ¹) UN = AC 230 V ¹) Detector voltage between ionization probe and ground AC 50...120 V AC 115...230 V (AC voltmeter Ri ≥ 10 MΩ) Switching threshold (limit values): Switching on (flame on) (DC ammeter Ri ≤...
- Page 11 Technical data (cont´d) Flame supervision Mains voltage AC 230 V +10% / -15% 50...60Hz ±6% with AGQ3…A27 and Mains frequency UV detector QRA... Perm. cable length from QRA... to Max. 20m AGQ3…A27 (lay separate cable) Perm. cable length from AGQ3...A27 to Max.
- Page 12 Technical data (cont´d) Flame supervision Detector current required Perm. detector current Possible detector current with QRC... (with flame) (without flame) with flame (typically) QRC... Min. 70µA Max. 5.5µA Max. 100µA (only LME23…) The values given in the table above only apply under the following conditions: - Mains voltage AC 120 V / AC 230 V - Ambient temperature 23°C Green LED for opera-...
- Page 13 Functions (cont´d) Control sequence in the If lockout occurs, the outputs for the fuel valves, the burner motor and the ignition event of fault equipment will immediately be deactivated (< 1 second). Cause Response Restart Mains failure Safety shutdown Voltage below undervoltage threshold Voltage above undervoltage threshold Restart Extraneous light during «t1»...
- Page 14 Operation, indication, diagnostics Lockout reset button «EK» is the key operating element for resetting Operation the burner control and for activating / deactivating the diagnostics func- tions. The multicolor signal lamp (LED) in the lockout reset button is the key Yellow indicating element for visual diagnostics and interface diagnostics.
- Page 15 Operation, indication, diagnostics (cont´d) Diagnostics of the cau- After lockout, the red fault signal lamp LED will remain steady on. In that condition, se of fault visual diagnostics of the cause of fault according to the error code table can be acti- vated by pressing the lockout reset button for more than 3 seconds.
- Page 16 Connection diagram and control sequence LME11… μC control RESET K2/1 K2/2 R / W 7101a24e/0708 B´ SB / R W / GP 16/25 Building Technologies CC1N7101en HVAC Products 27.11.2008...
- Page 17 Connection diagram and control sequence LME21… μC control RESET K2/1 K2/2 R / W 7101a22e/0708 B´ SB / R W / GP (LR) BV2 7101d05/0206 Application examples only LME11… / LME21… / LME22… The suitable wiring schemes are merely examples which must be verified in the individual case depending on application! Burner without fan and without «LP»...
- Page 18 Application examples The suitable wiring schemes are merely examples which must be verified in the individual case depending on application! Control of actuators of 2-stage or 2-stage modulating burners. Controlled prepurging «t1» with low-fire air 7101a09/0705 volume. Same low-fire actuator position during startup and operation.
- Page 19 Connection diagram and control sequence LME22… / LME23… μC control RESET K2/1 K2/2 R / W Nur LME23... br bl 7101a02e/0708 B´ SB / R W / GP (LR) BV2 7101d02/0606 19/25 Building Technologies CC1N7101en HVAC Products 27.11.2008...
- Page 20 Application examples The suitable wiring schemes are merely examples which must be verified in the individual case depending on application! Control of actuators of 2-stage or 2-stage modulating burn- ers. Controlled prepurging «t1» with nominal load air volume. 7101a13/0804 For information about actuators «SA»: SQN3...: Refer to Data Sheet N7808 SB/R/W SQN7...: Refer to Data Sheet N7804...
- Page 21 Connection diagram and control sequence LME41… μC control RESET K2/1 K2/2 R / W Only LME23... br bl 7101a02e/0708 B´ SB / R W / GP t1´ 21/25 Building Technologies CC1N7101en HVAC Products 27.11.2008...
- Page 22 Connection diagram and control sequence LME44… μC control RESET K2/1 K2/2 R / W 7101a20e/0708 B´ SB / R W / GP 7101d06/0206 t1´ 22/25 Building Technologies CC1N7101en HVAC Products 27.11.2008...
- Page 23 Legend AGK25... PTC resistor Error message (alarm) Burner Communication Interface BV... Fuel valve Closed Position Indicator DBR... Wire link Lockout reset button (internal) Remote lockout reset button Ionization probe Flame signal Flame signal amplifier Gas pressure switch Main switch Auxiliary contactor, relay Ionization probe K1...4 Internal relays...
- Page 24 Dimensions Dimensions in mm LME... 41,6 Plug-in base AGK11... / AGK13... LME... with extension of lockout reset button AGK20... Type reference Length «L» in mm AGK20.20 AGK20.43 AGK20.55 24/25 Building Technologies CC1N7101en HVAC Products 27.11.2008...
- Page 25 Dimensions (cont´d) Dimensions in mm Ancillary unit AGQ3...A27 Type Dimensions reference 90,5 AGQ3.1A27 69 6 AGQ3.2A27 7101m01/0804 © 2008 Siemens Building Technologies HVAC Products GmbH Subject to change! 25/25 Building Technologies CC1N7101en HVAC Products 27.11.2008...