Summary of Contents for BMM Heaters BMG
- Page 1 Air Heater Manuals User/Installation/Servicing BMM Heaters Ltd 1 Copeland Court Forest Grove Middlesbrough TS2 1RN Tel:01642 240700 Fax:01642 240708 Sales@bmmheaters.co.uk...
- Page 2 BMM HEATERS REFERENCES Heater Models Description Horizontal Heater for ducted or AHU applications suitable for natural gas. BMVG Vertical heater for ducted or AHU applications suitable for natural gas. BMGVF Free standing nozzle head heater with force draught gas burner.
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Page 3: Table Of Contents
CONTENTS PAGE DESCRIPTION Section 1: Introduction…………………………………………. Section 2: Heater Safety………………………………………… Section 3: Installers Responsibilities…………………………… Section 4: Specifications………………………………………… Section 5: Heater Installation & Clearances…………………... Section 6: Air supply…………………………………………….. Section 7: Overheat Protection Device…………………………. Section 8: Flue System…………………………………………… 11 Section 9: Ventilation Requirements……………………………. 16 Section10: Gas Piping……………………………………………. -
Page 4: Section 1: Introduction
Factory Test All heaters produced by BMM Heaters Ltd will be subjected to various tests before they are dispatched. Each heater is individual so the data will differ between each unit. -
Page 5: Section 2: Heater Safety
Section 3: Installers Responsibilities ♦ To install the heater, as well as the gas and electrical supplies, in accordance with applicable specifications and codes. BMM Heaters recommends the installer contact a local Building Inspector, Fire Officer or Insurance Company for guidance. -
Page 6: Section 4: Specifications
Section 4: General Technical Table 1 Model Heat Heat Max Start Flue Flue Weights Weights Input Output Gas Rate Flow Spigot Size External Internal flow flow m³/hr Rate Nominal Ø mm Heater Heater m³/sec m³/sec m³/hr Ø mm 0.36 0.432 0.44 0.94 1.55... -
Page 7: Section 5: Heater Installation & Clearances
Section 5: Heater Installation Before installation, check that the local distribution conditions, nature of gas pressure and adjustment of the appliance are compatible. The air heater must be installed in accordance with the rules in force and the relevant requirements of any fire regulations or insurance company’s requirements appertaining to the area in which the heater is located, particularly where special risks are involved, such as areas where petrol vehicles are housed, where cellulose spraying is carried out, in wood working departments etc. - Page 8 The BMG is designed to be installed within an Air Handling Unit or ductwork. The appliance is designed to work in a maximum ambient temperature of 40°c.
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Page 9: Section 6: Air Supply
Heater in the ‘off’ position. Adjustable by pass plates BMG models fitted into larger cabinets for internal or external use should be fitted with adjustable air balancing plates or a simple restriction damper. If the work is... -
Page 10: Section 7: Overheat Protection Device
Section 7: Overheat Protection Device Overheat protection is fitted in case the air flow falls below the minimum necessary for safe operation of the heater, which may be caused by failure of the supply fan motor or belt failure, dirty filters or inlet damper failure. If the air flow falls too low, the high limit will trip out and will require manually resetting. -
Page 11: Section 8: Flue System
This appliance does not require a draught diverter. f) BMM Heaters recommend that a 90º Tee condensate piece is connected directly onto the heater spigot, from this point the flue must then rise vertically with no horizontal runs of flue pipe or 90º bends. If there is an unavoidable obstruction then the use of 45º... - Page 12 600mm above the apex is the minimum height above the building if within 1.5 metres of the surface, see drawings Figure 1 & 2. Maximum height is no more than 25 metres, if this exceeded please consult BMM Heaters or consideration should be given for a fan assisted flue. External: Minimum flue height is 1 metre above appliance roof.
- Page 13 Preferred positions are: - At or above the ridge of a pitched roof by means of a roof terminal. - Above the intersection with a pitched roof. The pitch or angle of the roof will determine the required flue height from the base of the terminal.
- Page 14 Not less Terminals must not be positioned than within 1.5m of the wall surface 600 mm Not greater than 45° Not less than 600 mm Less than 1500 mm Less than Fig 1. Pitched roof, not greater than 45° 600mm Dormer window Fig 2.
- Page 15 Not less than Not less than 600 mm 600 mm Parapet Fig 6. Flat roof, with parapet Not less Structure Structure than 600 mm Less than 10 h Greater than 1500 mm Fig 7. Flat roof, envelope method Structure Structure 250 mm Greater than 10 h Greater than 10 h...
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Page 16: Section 9: Ventilation Requirements
Section 9: Ventilation Requirements Where the heater is to be installed in a plant room, the heater requires the plant room housing to have permanent air vents communicating directly with the outside air, at a high level and at a low level. Where communication with the outside air is possible only by means of high level air vents, ducting down to floor level for the lower vent(s) should be used. -
Page 17: Section10: Gas Piping
Section 10: Gas Piping All Gas Pipe-work to the appliance should be installed in accordance with current regulations, local and national codes and must be connected with an acceptable gas isolation valve and union, so that the burner maybe removed to aid servicing and inspection of the burner. - Page 18 Gas Connection Size Model Weishaupt Burner Riello Burner ½" BSP ½" BSP ½" BSP ½" BSP ½" BSP ½" BSP ½" BSP ½" BSP ½" BSP ½" BSP ¾" BSP ½" BSP ¾" BSP ¾" BSP ¾" BSP ¾" BSP 1"...
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Page 19: Section 11: Condensate Drains
All wiring and control cables must be ran in conduit and correct size glands used etc. All appliances must be earthed. Each heater manufacture is individually made to suit the customer so a dedicated circuit will be attached to this manual. BMM Heaters will also attach a circuit within the interface panel. - Page 20 Special Requirements On application Controls: BMM Heaters can supply controls for these heaters upon request. Please confirm with us the type of controls prior to connecting to check compatibility. The Burner wiring diagrams can be found in the burner supplement provided with this manual.
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Page 21: Section 13: Heater Controls
Section 13: Heater Controls The heater can be used with most Building Management Systems. 2:1 Turndown Burner: The heater interface panel connections: (a). 240v & N supply (b). T1 & T2 is the enable, T1 & T2 must break when up to a temperature, all interlocks to be wired in series with T1 &... - Page 22 4:1 Turndown Burner: The heater interface panel connections: (a). 240v & N supply T1 & T 2 is the enable, T1 & T2 must break when up to temperature, all interlocks to be wired in series with T1 & T2. (The burner must be interlocked with the supply fan).
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Page 23: Section 14: Commissioning
Section 14: Commissioning. Commissioning ON/OFF COMMISSIONING MUST BE CARRIED OUT BY A COMPETENT REGISTERED ENGINEER (CORGI), ALSO TO BE USED WITH BURNER COMMISSIONING DETAIL SEE BURNER INSERT. Visually check full system to see if it is in accordance with our manual and to current / CORGI legislation and IEE regulations and to this manual. - Page 24 Before opening the commissioning stop tap ensure that the burner air damper is open. The main valve has to be disconnected and the pilot is to be left connected, then open the commissioning tap and switch the burner on. The burner should go through its sequence and fire but stay on.
- Page 25 Finally make a full record of combustion data on commissioning sheet provided; a copy is to be presented to the customer and to BMM Heaters on completion of work. The commissioning sheet should include the following:- (a) Model and serial numbers.
- Page 26 Commissioning High/Low COMMISSIONING MUST BE CARRIED OUT BY A COMPETENT REGISTERED ENGINEER (CORGI), ALSO TO BE USED WITH BURNER COMMISSIONING DETAIL SEE BURNER INSERT. 1. Visually check full system to see if it is in accordance with our manual and to current/CORGI legislation and IEE regulations and to this manual.
- Page 27 8. Make sure that the stat, which is wired between terminals 1 & 2 is closed and turn main gas on to make the gas pressure switch and turn the commissioning stop tap off. Switch the burner on, the burner should run through its cycle and after the ignition spark goes out, the burner should lockout on flame failure on the control box.
- Page 28 18. Finally make a full record of combustion data on commissioning sheet provided; a copy is to be presented to the customer and to BMM Heaters on completion of work. The commissioning sheet should include the following: (a) Model and Serial Numbers.
- Page 29 Commissioning High Turndown COMMISSIONING MUST BE CARRIED OUT BY A COMPETENT REGISTERED ENGINEER (CORGI), ALSO TO BE USED WITH BURNER COMMISSIONING DETAIL SEE BURNER INSERT. 1. Visually check full system to see if it is in accordance with our manual and to current/CORGI legislation and IEE regulations and to this manual.
- Page 30 8. Make sure that the stat, which is wired between terminals 1 & 2, is closed and turn the man gas on to make the gas pressure switch and turn the commissioning stop tap off. Switch the burner on, the burner should run through its cycle and after the ignition spark goes out the burner should lockout on flame failure on the burner control box.
- Page 31 17. Finally make a full record of combustion data on commissioning sheet provided; a copy is to be presented to the customer and to BMM Heaters on completion of work. The commissioning sheet should include the following:- Model and serial number.
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Page 32: Section 15: Servicing
BEFORE CARRYING OUT ANY WORK ON THE UNIT SEE THAT THE ISOLATING SWITCH IS IN THE ‘OFF’ POSITION AND THE GAS SUPPLY IS SHUT OFF. BMM HEATERS ONLY RECOMMEND THE USE OF PARTS SUPPLIED OR RECOMMENDED BY OURSELVES. INFORMATION GUIDANCE... - Page 33 5. Fully service burner and replace electrodes, if required (a) The fan limit thermostat (b) The front outer case panel (c) Remove and support flue (d) Remove Rear panel (e) The heat exchanger cover plate, front and rear. (f) Brush any deposits from all of the flue ways using a brush. Also brush down the heat exchanger tubes.
- Page 34 The method of securing it is to have strips overlapping, and to cut through both surfaces with a sharp knife to give an exact join. Self adhesive webbing is easier to secure (available from BMM Heaters). Recommended intervals: Weekly check: Check that there are no apparent leaks.
- Page 35 Overheat/Limit control: The limit control provides protection for the heater, should the temperature rise above a safe level. If an overheat condition occurs, the limit control will shut down the burner and hold it off until the manual reset button is pressed. NOTE: If the limit requires re-setting more than once after first re-set, then a competent engineer must be called to investigate further.
- Page 36 Fan control: The burner should start its safety sequence and then fire up. When the heater achieves 35°c the supply fan will cut in and your heater is up and running. When the space is up to temperature the burner will stop and the supply fans will run on until the fan control reaches 25°c and then the supply fan will shut down.
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Page 37: Section 16: Removal And Replacement Of Parts
Section 16: Removal and Replacement Parts Note! Please refer also to the burner supplement supplied with this Manual. Multi-Block gas valve 1. Isolate electric and gas. 2. Remove Din Plugs by using a terminal screwdriver to undo locking screw. 3. Undo valve flanges with 13mm spanner (up to 500 model), 17mm spanner (above 500 model). - Page 38 Main Supply fan 1. Isolate electric supply. 2. Remove front lower access panel. 3. To remove fan belt, slacken both adjustment bolts on motor plate by turning anti-clockwise. 4. Disconnect fan motor electrics. 5. Remove motor on motor plate and undo x 4 bolts, Note, you will require x 4 locking nuts on replacement.
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Page 39: Section 17: Spare Parts
Please refer to gas burner supplement supplied with this manual. All components can be purchased from BMM Heaters. WARNING Only use parts recommended by BMM Heaters or other wise stated in this manual. You must first contact BMM Heaters if you want to use alternative parts. -
Page 40: Section 18: Troubleshooting
Section 18: Troubleshooting Note! Please refer to burner supplement supplied with this manual where more specific troubleshooting will be found. Fault Cause Check Burner Lockout Burner fault, check sector Refer to burner lockout occurred on supplement finding chart controls box Overheat trip Dirty filters, low supply Filters, supply fan belts,... -
Page 41: Section 19: Users Manual
Section 19: Users Instructions WARNING! If you smell gas: 1. Open all windows and door. 2. DO NOT try to light any appliance. 3. DO NOT use electrical switches. 4. DO NOT use any telephone in your building. 5. Leave the building. 6. - Page 42 WARNING! In Emergency only! Use electrical isolator and the gas isolation valve to isolate the appliance. Do not use electrical isolator to switch this appliance off in normal use, as the fan is required to run on to cool the heat exchanger failure to do so will cause damage to this appliance.
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