Subscribe to Our Youtube Channel
Related Manuals for Lochinvar LBF81
Summary of Contents for Lochinvar LBF81
- Page 1 The LBF range High Efficiency Gas Fired Water Heaters Installation, Commissioning & Maintenance Instructions Models: LBF81 LBF121 LBF151 LBF171 LBF221 LBF301 LBF401 INS0044 Issue No 2 | July 2013...
-
Page 3: Table Of Contents
9.3.4 VERTICAL CONCENTRIC FLUE FITTING DETAILS LBF151 – 401 ........................... 25 TWIN PIPE FLUE SYTEM ..........................................26 9.4.1 HORIZONTAL TWIN PIPE FLUE FITTING DETAILS LBF81/121 ............................26 9.4.2 VERTICAL TWIN PIPE FLUE FITTING DETAILS LBF81/121 .............................. 27 9.4.3 HORIZONTAL TWIN PIPE FLUE FITTING DETAILS LBF151 – 401 ........................... 28 9.4.4... -
Page 5: Introduction
INTRODUCTION The Lochinvar LBF range is a wall mounted or floor standing (dependent upon model) direct gas-fired high efficiency water heater. The burner is initiated by a full electronic ignition sequence control that incorporates a spark ignition and a flame rectification device for supervision of the flame. -
Page 6: Principal Parts
PRINCIPAL PARTS FIGURE 2.1 LBF81/121 PRINCIPAL PARTS Flue hood cable Storage vessel Flue hood Upper casing Flue baffle Hot outlet tube Front casing Gas inlet pipe Control panel Gas valve Power connection PCB Ignition sequence controller Burner assembly Lower casing Side casing TABLE 2.1... - Page 7 FIGURE 2.2 LBF151/171 PRINCIPAL PARTS Fan assembly Power connection PCB Inspection door cover Gas valve Burner door gasket Electrode grommets Control panel Burner door Ignition electrode cable (white) Gas pipe Upper cover Gas pipe gaskets Flame sense electrode (red) Burner assembly Ignition sequence controller Combustion chamber casing Ignition sequence controller cable...
- Page 8 Control panel Gas pipe Flue Baffles Gas pipe gaskets Fan Assembly Flame sense electrode cable (red) Flue Hood Burner assembly TABLE 2.3 LBF221 – 401 PRINCIPAL PARTS A replacement parts list is available to download from Lochinvar’s website; please visit www.lochinvar.ltd.uk...
-
Page 9: Dimensional Drawings
DIMENSIONAL DRAWINGS LBF81/121 TOP VIEW FRONT VIEW FIGURE 2.4 DIMENSIONS LBF81/121 LBF81 LBF121 Overall Height Of Heater 1040 1400 Height without Flue Hood 1210 Width Depth Centre Line Of Flue Outlet 1255 Diameter Of Outer Flue Diameter Of Inner Flue... - Page 10 TOP VIEW SIDE VIEW FRONT VIEW RIGHT FIGURE 2.5 DIMENSIONS LBF151/171 TOP VIEW SIDE VIEW FRONT VIEW RIGHT TOP VIEW SIDE VIEW FRONT VIEW RIGHT TOP VIEW SIDE VIEW FRONT VIEW RIGHT FIGURE 2.6 DIMENSIONS LBF-221/301/401 LBF151 LBF171 LBF221 LBF301 LBF401 Overall Height 1905...
-
Page 11: Technical Data
TECHNICAL DATA Model Number LBF81 LBF121 LBF151 LBF171 LBF221 LBF301 LBF401 GENERAL DATA Input (gross) – kW 20.0 21.1 27.8 32.2 32.2 Input (net) – kW 18.0 19.0 25.0 29.0 29.0 Recovery Rate (44° ΔT) – l/hr Recovery Rate (50° ΔT) – l/hr Heat generator seasonal efficiency –... -
Page 12: General Requirements
GENERAL REQUIREMENTS The Lochinvar LBF range water heater has been designed to operate trouble free for many years. These instructions should be followed closely to obtain the maximum usage and efficiency of the equipment. PLEASE read the instructions fully before installing or using the appliance. -
Page 13: Water Quality
Water supply quality may adversely affect the efficiency and performance of water heaters and hot water systems. The situation can intensify where higher temperatures or demands exist. When installing the Lochinvar LBF in hard water areas, it is recommended that a water treatment specialist be consulted. -
Page 14: Clearances
GAS SUPPLY The Lochinvar LBF range is suitable for use on second and third family gasses 2H - G20 - 20mbar and 3P - G31 - 37mbar. Details relating to Natural Gas (2H) appear below; for details relating to Propane (3P) please refer to Section 13: LPG FUEL. -
Page 15: Flue Hood Assembly Lbf151 - Lbf401
FLUE HOOD ASSEMBLY LBF151 - LBF401 UNPACKING THE FLUE HOOD The flue hood is delivered with the water heater in a separate box that contains: A. Flue hood casing in black painted aluminium B. fan assembly C. Ø 60/100 Transition piece with flue sampling point, Plastic bag with fixing screws FLUE HOOD INSTALLATION Place the fan assembly on the top of the water heater, pointing the Ø... - Page 16 Fix the fan in position with the screws contained in the box. Fix the bracket with the hole for cables vertically.
- Page 17 Feed the air pressure switch hoses through the bracket. Connect the motor supply cable, pos. 2 and 3. Connect the earth cable, pos. 1...
- Page 18 Connect the two tubes to the pressure points. IMPORTANT: Pink tube pressure point 1 (the metal one) Clear tube pressure point 2 (the plastic one) Place the black flue hood casing on the heater.
- Page 19 Centre the Flue hood casing by means of the 4 spacers on the top of the heater: Connect the Transition piece with sampling point...
- Page 20 Fix the black flue hood casing to the heater using the screws supplied in the box.
-
Page 21: Flue System
Detailed recommendations for the flue system are given in BS5440-1. The following notes are intended to give general guidance only. APPROVED FLUE SYSTEM This appliance is approved for use with a purpose designed adaptive room sealed flue system; the appropriate kits are available from Lochinvar Limited... -
Page 22: Concentric Flue System
CONCENTRIC FLUE SYSTEM 9.3.1 HORIZONTAL CONCENTRIC FLUE FITTING DETAILS LBF81/121 FIGURE 8.2 HORIZONTAL CONCENTRIC FLUE KIT FOR LBF81/121 Kit Part Number Description Additional Components Description ASKITSO 1000mm Horizontal Concentric Flue Kit Kit Components ASPC100 38/60 Extension (Adjustable 1000mm) 38mm Clamp With Gasket (Not Visible) ASDC609 38/60 90°... -
Page 23: Vertical Concentric Flue Fitting Details Lbf81/121
9.3.2 VERTICAL CONCENTRIC FLUE FITTING DETAILS LBF81/121 FIGURE 8.3 VERTICAL CONCENTRIC FLUE KIT FOR LBF81/121 Kit Part Number Description Additional Components Description ASKITSV 1000mm Vertical Concentric Flue Kit Kit Components ASPC100 38/60 Extension (Adjustable 1000mm) 38mm Clamp With Gasket (Not Visible) 60mm Clamp With Gasket 38/60 90°... -
Page 24: Horizontal Concentric Flue Fitting Details Lbf151 - 401
9.3.3 HORIZONTAL CONCENTRIC FLUE FITTING DETAILS LBF151 – 401 FIGURE 8.4 HORIZONTAL CONCENTRIC FLUE KITS FOR LBF151-401 Kit Part Number Description Additional Components Description AKIT 01 1000mm Horizontal Concentric Flue Kit AIPC10 60/100 Extension (Adjustable 1000mm) Kit Components AICC45 60/100 45° Concentric Bend Wall Cover AICC90 60/100 90°... -
Page 25: Vertical Concentric Flue Fitting Details Lbf151 - 401
9.3.4 VERTICAL CONCENTRIC FLUE FITTING DETAILS LBF151 – 401 FIGURE 8.5 VERTICAL CONCENTRIC FLUE KIT AKIT03 FOR LBF151-401 Kit Part Number Description Additional Components Description AKIT03 1000mm Vertical Concentric Flue Kit AIPC10 60/100 Extension (Adjustable 1000mm) Kit Components 60/100mm 90° Concentric Bend 60mm Flue seal 100mm Air Duct seal Flue Gas Sampling Point Cap... -
Page 26: Twin Pipe Flue Sytem
60mm Terminal End TABLE 8.6 HORIZONTAL TWIN PIPE FLUE KIT AND COMPONENTS LBF81/121 Determine the location of the flue terminal and air intake, taking into account minimum distances as detailed in Figure 8.1, Table 8.1 and the relevant British Standards. -
Page 27: Vertical Twin Pipe Flue Fitting Details Lbf81/121
60mm Terminal End (not supplied in kit) TABLE 8.7 VERTICAL TWIN PIPE FLUE KIT AND COMPONENTS LBF81/121 1. Determine the desired location for the flue terminal and air intake, taking into account minimum distances as detailed in Figure 8.1, Table 8.1 and the relevant British Standards. -
Page 28: Horizontal Twin Pipe Flue Fitting Details Lbf151 - 401
9.4.3 HORIZONTAL TWIN PIPE FLUE FITTING DETAILS LBF151 – 401 FIGURE 8.8 HORIZONTAL TWIN PIPE FLUE KIT FOR LBF151 – 401 Kit Part Number Description Additional Components Description AKIT 02 Horizontal Twin Pipe Flue Kit A.I.CV804 80mm 45°M/F Bend Kit Components A.I.CV809 80 mm 90°M/F Bend Air Transition Piece Gasket... -
Page 29: Vertical Twin Pipe Flue Fitting Details Lbf151 - 401
9.4.4 VERTICAL TWIN PIPE FLUE FITTING DETAILS LBF151 – 401 FIGURE 8.9 VERTICAL TWIN PIPE FLUE FOR LBF151 - 401 Kit Part Number Description Additional components required AKIT 02 Horizontal Twin Pipe Flue Kit A.I.CV809 (item no 3) 80 mm 90°M/F Bend Required components from AKIT 02 Air Transition Piece Gasket Additional components... -
Page 30: Maximum Flue Length - Concentric
MAXIMUM FLUE LENGTH - CONCENTRIC When using the concentric flue system the maximum flue length for all models is 3 metres for horizontal termination and 2 metres for vertical termination. For each 45° bend, 0.5 metres should be deducted from the total length. -
Page 31: Flue Discharge
When the appliance is installed in a compartment or an enclosure, cooling ventilation should be provided as follows: Enclosure/Compartment Enclosure/Compartment Input Input (Direct to Outside) (To Internal Space) Model (Gross) (Net) High High LBF81 LBF121 LBF151 20.0 18.0 LBF171 21.1 19.0 LBF221 27.8 25.0 LBF301 32.2 29.0... -
Page 32: Water Connections
BY AN APPROVED INSTALLER. If the Lochinvar LBF range is to be used in an unvented arrangement, the system should follow the guidance given in BS6700 and must comply with The Building Regulations 2000: Part G3. A kit of components that have been suitably sized for the unvented operation of the appliance is available from Lochinvar Limited. - Page 33 = DRAIN VALVE BRP = BUILDING RETURN PUMP VENT PIPE COLD SUPPLY TO BUILDING BUILDING RETURN BUILDING FLOW FIGURE 10.1 VENTED PIPEWORK ARRANGEMENT LBF81/121 VENT PIPE COLD SUPPLY BUILDING TO BUILDING RETURN BUILDING FLOW PTRV = ISOLATION VALVE NRV = NON-RETURN VALVE = TUNDISH PTRV = PRESSURE &...
- Page 34 * = OPTIONAL EXPANSION VESSEL IF SYSTEM VOLUME REQUIRES BUILDING RETURN BUILDING FLOW FIGURE 10.3 UNVENTED PIPEWORK ARRANGEMENT LBF81/121 = ISOLATION VALVE PRV = PRESSURE REDUCING VALVE NRV = NON-RETURN VALVE = EXPANSION VALVE = TUNDISH = LOCKSHIELD VALVE = EXPANSION VESSEL PTRV = PRESSURE &...
-
Page 35: Expansion Vessel Sizing
Wiring external to the equipment must be installed in accordance with the I.E.E. Regulations and any local regulations that apply. Normal Supply External Fuse Power Model Voltage Rating Consumption LBF81 26 W LBF121 26 W LBF151 67 W 230V AC LBF171 50 Hz 6.0 A... -
Page 36: External Controls
12.2 EXTERNAL CONTROLS To achieve time control over the water heater, the main power supply to the appliance should be interrupted. It is essential that the Correx non-sacrificial anode protection system has an independent power supply if time control is required. The water heater can give a 240 VAC output to indicate flame failure and burner on conditions. -
Page 37: Wiring Diagrams
12.5 WIRING DIAGRAMS FIGURE 11.1 WIRING DIAGRAM LBF81/121 COMPONENTS GROUPS COLOUR OF CABLES ON – OFF switch Flue hood white Adjustable thermostat Power connection PCB blue Limit thermostat Instrument control panel grey Green burner (on) light Ignition sequence controller brown... - Page 38 FIGURE 11.2 WIRING DIAGRAM LBF151 - 401 GROUPS COMPONENTS COLOUR OF CABLES Ignition sequence controller ignition electrode wh: white Connection PCB flame detection electrode blue Instrument control panel line trap gy: grey fuse for printed circuit (2A) bn: brown On/Off switch bk: black differential pressure switch rd: red...
-
Page 39: Commissioning And Testing
13.0 COMMISSIONING AND TESTING 13.1 ELECTRICAL INSTALLATION Notes on the requirements for electrical installation are provided in Section 11: ELECTRICAL SUPPLY. A schematic drawing of the control circuit is shown in Figures 11.1 & 11.2. 13.2 GAS INSTALLATION For design see Section 7: GAS SUPPLY. See Figures 2.4, 2.5 & 2.6 for details on the position of the gas connection. -
Page 40: Control Panel
B- Adjustable thermostat C-Thermometer D- Burner on light (green) E- Lock-out light and re-set button F- Sight glass FIGURE 12.1 LBF81/121 CONTROL PANEL LEGEND A- On/Off switch B- Adjustable thermostat C- High temperature limit manual re-set D- Thermometer E- Burner on light (green) F- Lock-out light and re-set button FIGURE 12.2... -
Page 41: Gas Pressure Adjustment
Carry out a combustion analysis. Record all readings for future reference on a relevant commissioning sheet. INLET TEST POINT INLET TEST POINT OUTLET TEST POINT ADJUSTMENT SCREW OUTLET TEST POINT ADJUSTMENT SCREW LBF81/121 LBF151 - 401 FIGURE 12.3 GAS VALVES... -
Page 42: Temperature Adjustment Procedure
13.5 TEMPERATURE ADJUSTMENT PROCEDURE The temperature selector knob of the operator thermostat will be adjusted to its lowest setting when dispatched from the factory. The control thermostat setting should be adjusted to ensure that the water is stored at 60°C and distributed at 50°C within 1 (one) minute at all outlets. -
Page 43: Conversion To Lpg
In the event of any seal or gasket being broken it is essential that the seal or gasket be replaced. Contact Lochinvar Limited for replacement seals and gaskets. To convert the appliance, the correct kit should be selected from the following table:... -
Page 44: Lbf151 - 401
14.3.2 LBF151 – 401 LBF151/171 LBF221/301/401 FIGURE 13.2 GAS SUPPLY CONVERSION Check that the diameter of the injector contained in the kit is correct for the appliance (see Table 3.1). Close the gas-inlet appliance isolating valve and isolate the electrical supply. Remove the burner by first detaching the gas pipe and the electrode cables and then undoing the retaining nuts (Item A in Figure 13.2). -
Page 45: Maintenance
15.0 MAINTENANCE 15.1 GENERAL KEEP APPLIANCE AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS AND FLAMMABLE VAPORS AND LIQUIDS. A competent person should check and ensure that the flue system, ventilation to the plant room, safety valve, drain, pressure gauge etc. are in a serviceable and working condition and still comply with the relevant standards and codes of practice, as detailed in Section 3.1 RELATED DOCUMENTS. -
Page 46: Removing Scale And Sediment
REMOVING SCALE AND SEDIMENT Drain the heater. Refer to Section 14.3: DRAINING WATER HEATER SYSTEM. Remove the front cover for LBF81/121 or the outer cover plate from lower side of water heater jacket for all other models. Remove the cleanout cover and gasket from cleanout opening. -
Page 47: Anode Removal Lbf151/171
15.5.2 ANODE REMOVAL LBF151/171 FIGURE 14.2 LBF151/171 ANODE LOCATION Drain the water heater. Refer to Section 14.3: DRAINING WATER HEATER SYSTEM. Ensure the flue is adequately supported. Remove the flue hood assembly The retaining plug for the upper anode should be visible from above the appliance. Remove the anode (Item A in Figure 14.2) and check its condition. -
Page 48: Refilling The Water Heater
Follow the lighting instructions as detailed in Section 12.4.4: PROCEDURE FOR INITIAL LIGHTING Check for water leakage. Install the front cover for LBF81/121 or the outer cover plate from lower side of water heater jacket for all other models. 15.7... -
Page 49: Other Checks
Commissioning and Maintenance Instructions should be handed over and kept in a safe place for easy reference. It is strongly recommended that the users read and understand the separate User Guide 17.0 WARRANTY Full warranty terms and conditions are available at www.lochinvar.ltd.uk... - Page 50 NOTES NOTES __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________...
- Page 51 NOTES NOTES __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________...
Need help?
Do you have a question about the LBF81 and is the answer not in the manual?
Questions and answers