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  5. Installation, Commissioning, User & Maintenance Instructions

Lochinvar Knight LG30GCE Installation, Commissioning, User & Maintenance Instructions

Manual is about: Traditionally Gas Fired Single Flue Water Heater with Pilot Ignition

Summary of Knight LG30GCE

  • Page 1

    These instructions must be read and understood before installing, commissioning, operating or maintaining the equipment. Important information 0310566 march 2012 installation, commissioning, user & maintenance instructions high efficiency water heaters and boilers knight traditionally gas fired sing...

  • Page 2

    2 read these installation instructions first before installing the appliance. Carefully read the user instructions before igniting the appliance. Failure to follow these instructions may lead to risk of explosion and/or fire and could cause material damage and/or bodily harm. Installation and commis...

  • Page 3

    3 contents page 1. General . .................................................................................................. 4 1.1 introduction ........................................................................................................4 1.2 technical safety equipment ...................

  • Page 4: 1.  General

    4 1. General 1.1 introduction construction of the heaters is in ac- cordance with the european standard for gas heated water storage heaters for sa- nitary application (en 89). The appliance thus meets the european directory for gas appliances and is therefore entitled to carry the ce-marking. It is...

  • Page 5

    5 1) draught diverter 2) hot water outlet 3) insulation 4) flue tube 5) glass lined tank 6) gas control valve 7) cold water inlet 8) t&p valve connection 9) outer casing figure 1 - cross-section of the heater 10) flue baffle 11) sacrificial anode 12) drain tap 13) atmospheric burner 14) pilot light ...

  • Page 6

    6 1.2 technical safety equipment 1.2.1 gas control valve the water heater has been fitted with a gas control block consisting of a thermo-electrical pilot flame safeguard, pilot flame pressure regulator, burner pressure regulator, a control thermostat (adjustable between 30°c and 71°c) and a safety ...

  • Page 7

    7 figure 2 - combustion products discharge safety device with gas control valve 1) combustion products discharge safety device thermostat 2) sensor combustion products discharge safety device thermostat 3) thermocouple with built-in interrupter 4) thermocouple 5) gas control block 6) reset button 7)...

  • Page 8

    8 1.3 technical information 1.3.1 dimensions these water heaters are only suitable for a flue tube with minimal the announced diameter (dimension g). Dimen- sions lg 30 lg 40 lg 50 (see draw.3) a 1280 1370 1670 b 1120 1210 1540 d 465 515 515 e 545 595 605 g 80 80 100 k 325 325 380 m 110 120 1590 n 1...

  • Page 9

    9 figure 3 - dimensions imd-0266 n k 3 a s 4 r b m 5 g e 2 d 1.

  • Page 10

    10 1.3.2 technical data device category: ii2h3+ description unit lg 30 lg 40 lg 50 data natural gas g20 - 20 mbar: nominal load (gross) k w 9.3 11.3 18.3 nominal capacity k w 7.4 9.0 14.0 supply pressure mbar 20 20 20 burner pressure mbar 12.5 12.5 10.5 gas consumption * m 3 /h 0.9 1.1 1.7 diameter ...

  • Page 11: 2.  For The Installer

    11 2. For the installer 2.1 installation instructions this water heater must be fitted in a location which will permit the provision of an approved flue system and adequate ventilation. A service clearance of 15 cm at the sides and rear of the unit and 60 cm at the front of the unit should be allowe...

  • Page 12

    12 all connections and joints should be tested for gas soundness with a suitable leak detector (do not use a naked flame). 2.1.4 flue system the water heater should be fitted with a flue system connected to the draught diverter. The flue pipe should rise for at least 50 cm. Vertically before the inc...

  • Page 13

    13 all flue materials should be corrosion resistant i.E. Stainless steel or galvanised and must include a tested and approved terminal to bs 5440 part i. If the flue passes through any combustible material measures must be taken to protect against the possibility of fire. All flues must terminate in...

  • Page 14: 2.2     Commissioning

    14 2.2 commissioning 2.2.1 filling the water heater 1. Close the drain tap; 2. Open the cold water tap to the water heater and open all taps where hot water can be drained for de-aeration. The water heater is filled as soon as cold water flows from all taps; 3. Close all hot water taps. 2.2.2 puttin...

  • Page 15: 2.3   Pilot Adjustment

    15 2.2.3 removing and replacing the inner door (only for the lg 30 and lg 40 model, see figure 7a). Mode of operation: 1. Place lip a through the recess on the right and subsequently slide it down behind the steel wall. See to it that both lower lips remain in front of the metal wall; 2. Press lip b...

  • Page 16

    16 3. Close the gas tap in the supply pipe. In case of longer interruptions or in the event of risk of frost it is recom- mended to also close the cold water tap and to drain the appliance after cooling (open the drain tap; it is pos- sible to connect a drain hose to the drain tap; open the nearest ...

  • Page 17

    17 2.6 setting the nominal heat input the gas control has been factory preset to the water heater nominal heat input. A further check of the burner pressure should be carried out during the commis- sioning of the unit after installation. The following procedure should be followed. 1. Remove the prot...

  • Page 18

    18 lg 30 lg 40 lg 50 g20 g30 g31 g20 g30 g31 g20 g30 g31 inletpressure mbar 20 30 37 20 30 37 20 30 37 burner pressure mbar 12.5 30 37 12.5 30 37 10.5 30 37 diameter main mm 2.35 1.40 1.40 2.60 1.50 1.50 3.50 1.95 1.95 injector diameter pilot 2x 2x 2x injector mm 0.27 0.22 0.22 0.27 0.22 0.22 0.27 0...

  • Page 19

    19 2.8 maintenance to ensure safe and efficient operation of the water heater it is recommended that it is cleaned and serviced at least once a year by a qualified competent person. 2.8.1 sacrificial anode the life cycle of the anode is determined by the quality and the quantity of the water flowing...

  • Page 20

    20 2.8.3 decalcification formation of lime scale depends on the quality and quantity of the water used. In addition higher water temperatures lead to more deposit in the appliance. A temperature setting of 60°c is recommended in order to keep the calcification at a low level. Decalcification should ...

  • Page 21: 3.  For The User

    21 should be set to a lower water temperature. If the pilot is extinguished repeatedly at higher temperatures than normal, this indicates that the safety thermostat is operating. 2.10.2 flue down draught safety device if the flue tube safety device has swit- ched off the appliance, the appliance can...

  • Page 22

    3.1.2 putting into operation: 1. Check whether the device has been filled with water and whether the gas supply to the water heater is open; 2. Turn the temperature control knob clockwise and place the control knob in the ‘pilot’-position ( ); 3. Remove the outer and inner door of the combustion cha...

  • Page 23

    Fault possible cause corrective action 3.2 fault overview blocked pilot burner blocked chimney safety thermostat thermocouple defective thermocouple makes no contact gas supply closed down draught supervision not connected. Temperature is set too low control knob in position ( ) (pilot burns) contro...

  • Page 24

    Fault possible cause corrective action insufficient hot water, or none at all water lea- kage set the temperature regulator at a lower temperature and reignite the pilot burner. Reduce the consumption of hot water. Allow the appliance time to heat the water. Turn the control button to the ( ) positi...

  • Page 25: 4.  Warranty

    4. Warranty 4.1 general warranty if within 1 (one) year of the invoice date or commissioning date of a water heater supplied by lochinvar ltd, following verification, and at the sole discretion of lochinvar ltd, an assembly or part (with exclusion of the tank) proves to be defective or fails to func...

  • Page 26

    4.4 exclusions the warranty set out in articles 1 and 2 will not apply in the event of: a. Damage to the water heater caused by an external factor; b. Misuse, neglect (including frost damage), modification and incorrect and/or unauthorized use of the water heater; c. Contaminants or other substances...

  • Page 27

    275 commercial gas fired storage water heater lg 30, lg 40, lg 50 gas appliance directive - 90/396/ec standards used: - en89: 1999 march 1, 2012 eec - declaration of conformity supplier: hereby declares that the following products: product description: product models: on the assumption that the inst...

  • Page 28

    Www.Lochinvar.Ltd.Uk lochinvar ltd 7 lombard way the mxl centre banbury oxon ox16 4tj tel: +44 (0) 1295 269981 fax: +44 (0) 1295 271640 email: info@lochinvar.Ltd.Uk high efficiency water heaters and boilers.