Weishaupt WG10 and WG20 gas burners LN (Low NO x ) version 2/2002 CA

Transcription

1 Weishaupt WG0 and WG20 gas burners LN (Low NO x ) version 2/2002 CA

2 New W series capacity range The Weishaupt WG0 and WG20 gas burners join the WG5, WG30 and WG40 to complete the line-up of products successfully introduced over the course of the last few years. As with all new W series Weishaupt burners, the WG0 and WG20 burners also use the latest microprocessor technology for the control and monitoring of all burner functions. As a result not only do they offer improved precision and ease of use, but they also represent fantastic value for money. Mixing head An outstanding detail of the low-emission LN burners is the specially developed mixing head. The specific way in which combustion air and gas are introduced leads to intensive flue gas recirculation. Various tests and results from the field have shown that the NO x limit of 40 ppm (calculated as NO 2 ), which is required in many countries for natural gas, can be improved upon as long as certain combustion chamber conditions are adhered to. With corresponding combustion chamber conditions, figures of 58 ppm can be achieved with LPG. Economical The best technology, functional design and proven quality have always been the hallmarks of Weishaupt products. With the WG0 and WG20 gas burners, we are introducing new burners that continue this tradition in an exemplary fashion. They fulfil the demand for economical and environmentally friendly operation combined with a low purchase cost. Fully automatic operation The burners function fully automatically. They reliably cater for multifarious heat exchangers for heating and hot water. Compact construction All of the new burner type s components are brought together into a compact space. The fuel and air regulating components are clearly laid out and easily accessible. The mixing head can be accessed from behind and completely removed. The burner can be hung on the left hand side of the casing during servicing. This enables easy access to the fan in particular. An easily removable cover protects all the components and electrics. Noteworthy points: The radial fan, the sound absorbing air inlet housing, the air damper for suction side air regulation and the microprocessor controlled combustion manager. The W-ZG 0 electronic ignition unit, which has replaced the ignition transformer on all W series Weishaupt burners, provides reliable ignition. Error-free plug connection Coded plug connections ensure the correct electrical connection of all components. Gas multi-function assembly The newly conceived multifunction assembly comprises the following components/functions: Servo controlled gas regulator for a constant gas pressure 2 solenoid valves Low gas pressure switch If the gas pressure drops too far the low gas program is initiated. Operational safety and reliability. Proven technology makes the new gas burners safe and reliable. The individual components as well as the completed product are comprehensively tested, guaranteeing safe operation for many years. Test procedures The WG0 and WG20 gas burners comply with European and North American applicable standards, including: UL std CGA std CAN/CSA std C22.2 No CGA std Fuels The following fuels can be fired: Natural Gas as well as Liquid Petroleum Gas. In standard version, the burners and gas train are only suitable for indoor operation. 2

3 Single and two stage operation with W-FM 0 combustion manager Gas butterfly valve Air stepping motor (linked to gas butterfly) W-FM 0 combustion manager Single and two stage operation W-FM 0 combustion manager The W-FM 0 combustion manager independently monitors and controls all of the burner s functions. Digital combustion management makes communication with other systems possible. The BUS connection allows the engineer to monitor the sequence of operations and diagnose any fault conditions. The main details: Microprocessor controlled combustion manager for single and two stage operation Identical for both oil and gas burners Ionization flame monitoring 7 and 4 pole connection plug integrated into burner housing Electrical remote reset BUS connection Prepurge time can be set by computer via the BUS Safety via two microprocessors (reciprocal monitoring) Multi color LED annunciation to indicate operational stage and fault conditions Suitable for hot water plant, including continuous operation (After 24 h operation a necessary short shutdown takes place automatically) Suitable for air heaters and steam boilers 3

4 Sliding two stage and modulating operation with W-FM 20 combustion manager Air stepping motor W-FM 20 combustion manager Gas stepping motor Sliding two stage and modulating operation W-FM 20 combustion manager The W-FM 20 combustion manager independently monitors and controls all of the burner s functions. Digital combustion management makes communication with other systems possible. The BUS connection allows the engineer to monitor the sequence of operations and diagnose any fault conditions. The main details: Identical construction for oil and gas burners Automatic recognition of gas or oil burner Easy operation via a key on the display panel LCD display to show the following Operating mode with ratings setting Information mode Hours run - Number of burner starts - Measured fuel consumption with corresponding gas meter - Unit number - Software version - Date of manufacture Service mode - Burner setting values - Error message display Parameter mode - Air damper setting at burner shutdown - Post purge time - BUS address Error messages Electronic compound fuel/air regulation to given characteristics Control of stepping motors Multifunctional Bus connection to: PC for presentation of the operational sequence and setting of function parameters Remote monitoring and diagnosis via self-dialling modem Interfacing with other components of the heating plant (e.g. controller or DDC unit) 4

5 Installation, setting and service: Easier, quicker and more precise than ever before Time is money Weishaupt burners of this rating are also easy to install. It is possible for one person to mount the burner on the boiler. Optimum accessibility Optimum accessibility becomes apparent the moment the cover is removed. All the components are clearly laid out, electrical connection is unmistakable. The components are also easily accessible for servicing. The mixing head can be matched to the required rating with the setting screw. It can be accessed from behind and completely removed with ease. This state of the art technology is typical of Weishaupt products. The motor block can be removed and placed into a service position for servicing the fan. Every service engineer benefits from this accommodating construction. Easy removal of the mixing head The service position allows good access to the fan. 5

6 Technical Data Capacity graph: WG0.../-C gas burner Capacity graph: WG20.../-C gas burner WC Burner type Combustion head Rating WG0.../-C WG0-C MBTU/h* WC Burner type Combustion head Rating WG20.../-C WG20-C MBTU/h* MBTU/h Depending on the altitude of the installation, a reduction in capacity of approx. % per 328 ft. above sea level must be taken into consideration. Model Overview Burner type Version Mode of operation Gas train Order number Rating size MBTU/h* WG0 Natural Gas WG0 N/-C Z-LN Single or two stage 3/ WG0 N/-C ZM-LN Sliding two stage or modulating 3/ LPG WG0 F/-C Z-LN Single or two stage 3/ WG0 F/-C ZM-LN Sliding two stage or modulating 3/ WG20 Natural Gas WG20 N/-C Z-LN Single or two stage WG20 N/-C ZM-LN Sliding two stage or modulating WG20 N/-C Z-LN Single or two stage WG20 N/-C ZM-LN Sliding two stage or modulating LPG WG20 F/-C Z-LN Single or two stage 3/ WG20 F/-C ZM-LN Sliding two stage or modulating 3/ Optional equipment WG0/-C, ZM WG0/-C, Z WG20/-C, ZM WG20/-C, Z Order number Order number Order number Order number Hours run meter, inbuilt Solenoid valve for air pressure switch test on continuous running fan or post purge Head extension Natural Gas by 4 (00mm) by 8 (200mm) by 2 (300mm) LPG by 4 (00mm) by 8 (200mm) by 2 (300mm) DLU digital ratings convertor Remote reset integrated into W-FM 20 combustion manager on ZM version * The burner ratings are based on lower calorific value MBTU/h Minimum 275 MBTU/h rating at high fire for WG20. 6

7 Technical Data Burner type Combustion Motor Stepping Ignition Air pressure Display Burner Gas Flame manager motor unit switch weight train sensor WG0../-C Version Z-LN W-FM 0 ECK 03/F 2/ STD 4.5 * W-ZG 0 AA-A2-4-5 without 30 lbs. 3 lbs. Ionization Version ZM-LN W-FM 20 0 V, 60 Hz STE 4.5 ** AM (approx) (approx) 0.3 kw, cap. 4 µf WG20../-C Version Z-LN W-FM 0 ECK 04/F 2/ STD 4,5 * W-ZG 0 AA-A2-4-5 without 44 lbs. 3 lbs. ➀ Ionization Version ZM-LN W-FM 20 0 V, 60 Hz STE 4,5 ** AM (approx) 5 lbs. ➁ 0.2 kw, cap. 8 µf (approx) * Operational runtime: max. 50 s across full setting range / min. 25 s across reduced setting range / approx. to 2 s during prepurge ** Operational runtime: approx. 3 s across full setting range / < 3 s across reduced setting range / approx. 3 s during prepurge Gas train layout Explanation of designation P 7 W G 20 N.../-C LN F LN = Low NO x Index N = Natural gas F = LPG Size G = Gas burner Weishaupt W series burner 3 P Ball valve 2 Additional gas pressure regulator (optional) 3 Gas pressure switch 4 Gas valve 5 Gas pressure regulator 6 Gas butterfly valve 7 Burner * The burner ratings are based on lower calorific value 7

8 Dimensions Scope of delivery WG0.../-C burner dimensions Scope of delivery 3/4 Burner with sound absorbing inlet housing Housing with burner motor and fan wheel Flange with servicing bracket, fixing screws and gasket Air regulation housing with servomotor controlled air damper LN (LowNOx) mixing head with diffuser and ignition and ionization electrodes Combustion head 6.5 W-ZG 0 electronic ignition unit with shielded ignition line WG20.../-C burner dimensions M8 Sensor line (ionization) equipped with test point Microprocessor controlled W-FM 0/W-FM 20 combustion manager with integrated plug console and externally accessible pole BUS connection Cover Complete gas train For further detailed information please refer to the technical documentation provided with the burner M8 Weishaupt Corporation 6280 Danville Road Mississauga, ON L5T 2H7, Canada Tel: (905) Fax: (905) sales@weishaupt-corp.com 8 Print No , February 2003 Printed in Germany. All rights reserved.