REMEHA P 420 Technical Instructions
Fuel oil/gas boilers
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Also See for P 420:
- Installation and service manual (28 pages) ,
- Assembly instructions manual (24 pages)
Related Manuals for REMEHA P 420
Summary of Contents for REMEHA P 420
- Page 1 Remeha P 420 English Fuel oil/gas boilers 06/04/06 Technical instructions 63190...
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Page 2: Table Of Contents
Spare parts .................17 Remeha P 420... -
Page 3: Introduction
Risk of injury and damage to equipment. Attention must be paid to the warnings on Caution danger safety of persons and equipment Specific information Information must be kept in mind to maintain comfort Reference Refer to another manual or other pages in this instruction manual 06/04/06 - 300008441-001-C Remeha P 420... -
Page 4: Description
The useful power of P 420 boilers is between 300 and 780 kW. Models available Boiler with control panel, which may be fitted with an optional Rematic 2945 C3 control unit for heating only or heating and domestic hot water production. -
Page 5: Technical Characteristics
30 K. Nominal operation (top boiler power) = 13.1 to 13.5% with fuel oil and 9.5% with natural gas. Boiler temperature : 80 °C - Ambient temperature : 20 °C 06/04/06 - 300008441-001-C Remeha P 420... - Page 6 135 - 175 - 190 - 240 - 250 - 290 or Plain plate 1427 1427 1427 1447 1447 1447 1447 1800 1950 2120 2305 2465 2625 2785 1505 1665 1825 1985 2145 2305 2465 1183 1343 1503 1663 1823 1983 2143 Remeha P 420 06/04/06 - 300008441-001-C...
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Page 7: Installing The Boiler
Installing the boiler 1 Boiler location For the assembly and because of their design, P 420 boilers require no special base. Their closed furnace system means that the floor need not have refractory properties. All you have to ensure is that the floor can support the weight of the boiler when it is fitted for operation. -
Page 8: Ventilation
Do not stock such products close to the boilers. If the boiler and/or peripheral equipment are corroded by such chloride or fluoride compounds, the contractual guarantee cannot be applied. Mounting For mounting instructions, see installation instructions. Remeha P 420 06/04/06 - 300008441-001-C... -
Page 9: Hydraulic Connections
Water meter DHW load pump Non-return valve Domestic cold water inlet Pressure reducer (if mains pressure 5.5 bar) Sealed safety unit calibrated to 7 bar with indicator type discharge Independent domestic hot water tanks 06/04/06 - 300008441-001-C Remeha P 420... -
Page 10: Important Recommendations For Connecting The Boiler To The Heating Circuit
- The water temperature in the boiler is maintained at 50°C or more ; the first stage must be set to a minimum of 30% of the nominal stage - Operation at modulated low temperature (minimum outlet temperature: 40°C) ; the first stage must be set to a minimum of 50% of the nominal stage Remeha P 420 06/04/06 - 300008441-001-C... -
Page 11: Filling The System
Comments : never replace a boiler in an existing system without carefully rinsing the system first. Install a sludge decanting pot on the return pipe, very close to the boiler. 06/04/06 - 300008441-001-C Remeha P 420... -
Page 12: Chimney Connection
1 Flue size Refer to applicable regulations while determining the size of the flue. Please note that P 420 boilers have pressurised and tight furnaces and that the pressure at the nozzle must not exceed 0 mbar, unless special sealing precautions have been taken, for instance in order to connect a static condenser/regenerator. -
Page 13: Fuel-Oil Or Gas Connections
- Max øB = 330 mm with 4 fastenings at 15° or 45° øA øB øM Refer to the instructions supplied with the burner. Electrical connections Refer to the connection instructions supplied with the control panel.. 06/04/06 - 300008441-001-C Remeha P 420... -
Page 14: Maintenance
- Carefully sweep the four flue ways with the brush supplied for that purpose. - Brush the baffle plates as well. - If possible, use a vacuum cleaner. - Cut the power supply to the boiler. - Remove the upper front panel. Remeha P 420 06/04/06 - 300008441-001-C... - Page 15 The 8-figure part number of the baffle plate is moulded into the metal Flue ways P 420-8 P 420-9 - P 420-10 P 420-11 P 420-12 P 420-13 - P 420-14 Upper 8229-0010 and 8229-...
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Page 16: Cleaning The Casing Material
4 Precautions required if the heating is stopped when there is a risk of freezing We recommend the use of a correctly dosed antifreeze agent to prevent to the heating circuit from freezing. If this cannot be done, drain the system completely. Remeha P 420 06/04/06 - 300008441-001-C... -
Page 17: Burner Maintenance
The identification plate fixed on the side of the boiler during installation is used to identify the boiler correctly and also provides the main specifications of the boiler. Boiler type Power ranges Thermic output Spare parts See next page. 06/04/06 - 300008441-001-C Remeha P 420... - Page 18 Spare parts - P 420 To order a spare part, quote the reference number next to the part required. 10/02/06 - UK 300004749-002-B Boiler body Remeha P 420 06/04/06 - 300008441-001-C...
- Page 19 Cladding 06/04/06 - 300008441-001-C Remeha P 420...
- Page 20 Insulating material for body Panel RC 1 Remeha P 420 06/04/06 - 300008441-001-C...
- Page 21 8229-0532 Plate for combustion chamber door, no opening Flow switch Plate for combustion chamber door with opening ø 8229-0546 8802-4703 Flow controller P 420-7 Plate for combustion chamber door with opening ø 8802-4707 Flow controller P 420-8 8339-0508 8802-4710 Flow controller P 420-9 Plate for combustion chamber door with opening ø...
- Page 22 Complete rear cover, width 490 mm 8229-4034 Lower insulation, boiler body - 11 and 12 sections 8229-8818 Complete cable way, left, P 420-7 8229-4036 Lower insulation, boiler body - 13 and 14 sections 8229-8819 Complete cable way, left, P 420-8...
- Page 23 06/04/06 - 300008441-001-C Remeha P 420...
- Page 24 © Copyright All technical and technological information contained in these technical instructions, as well as any drawings and technical descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing.. .Ours is a policy of continuous development. We reserve the right to alter specifications without prior notification.
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