Atmos Multi 24/80 Installation & Servicing Instructions Manual Download

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ATMOS MULTI version 2002

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Table of Contents

Section

Page

Introduction

1. Installation Regulation

2. General Information

3. Technical Data

4. Schematic of Boiler

5. Operation and
Construction

Appliance construction

Operating principle

Controls and function

User's programme

6. Installation Requirements

Gas supply

Electrical supply

Terminal location

Flue system

Condensate disposal

Discharge pipes

Existing systems

7. Boiler Installation

Unpacking the boiler

Minimum clearances

Boiler location

Wall mounting the boiler

Connecting the flue system

Connecting the c/heating

Connecting the mains water

Connecting the discharge pipes

Connecting the domestic hot
water

Connecting the gas supply

Connecting the condensate
siphon

Connecting the electrical supply

Section

Page

8. Commissioning

Filling the heating system

Filling the domestic hot water

Appliance operation

System balancing

9. System Shutdown

Central heating circuit

Domestic hot water

Draining the boiler

Disposal of appliance

10. Inspection & Servicing

Boiler pre-service inspection

Auxiliary equipment

Servicing the boiler

Completion

11. Component Replacement

12. Malfunctions

Appendices.

1. Spare part list

2. Combined safety & condensate discharge

3. Fault finding
4. Guarantee stipulations

Summary of Contents for Multi 24/80

Page 1: ...ATMOS MULTI version 2002 Page 1 ...

Page 2: ...ATMOS MULTI version 2002 Page 2 ...

Page 3: ...cting the flue system 17 Connecting the c heating 18 Connecting the mains water 19 Connecting the discharge pipes 20 Connecting the domestic hot water 21 Connecting the gas supply 21 Connecting the condensate siphon 22 Connecting the electrical supply 22 Section Page 8 Commissioning 25 Filling the heating system 25 Filling the domestic hot water 26 Appliance operation 26 System balancing 27 9 Syst...

Page 4: ...stallation and leave with the boiler for future reference Atmos Heating Systems accepts no responsibility for unsatisfactory performance of the appliance or flue arising from the failure to comply with these installation instructions On completion of installation the appliance must be commissioned and the following explained to the user q The operating principle of the appliance q The appliance co...

Page 5: ...cts 2 General Information 2 1 The Atmos Multi is a wall mounted fully automatic gas fired condensing combination boiler designed to provide unvented domestic hot water at mains pressure via an integral hot water storage cylinder 2 2 Classified as an Unvented hot water system the installation of the Atmos Multi falls within the scope of the Building Regulations 1995 Part G These require that a comp...

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Page 7: ...10 70 reheat time minutes 17 10 9 9 Hot water at 40 C instantaneously litres 133 133 133 133 Hot water per hour at 40 C litres 450 700 725 750 Hot water per hour at 40 C gallons 100 150 160 165 EMISSIONS NOx average emission ppm 18 18 19 19 CO average emission ppm 10 10 20 20 GC Number 41 249 02 41 249 03 41 249 04 41 249 04 COMMON DATA Hot water temperature setting range 60 to 70 C Central heatin...

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Page 10: ...ed and monitored by an electronic control unit that sends and processes information to and from the boiler s various temperature and control components Along with controlling the boiler s operation the control unit also provides a diagnostic programme that simplifies fault finding by automatically sending a fault code to a Status error code display window located on the control unit s fascia Centr...

Page 11: ...ater reaches 90 C the burner will automatically be extinguished The appliance has an anti cycling time of 3 minutes during which the burner will not re ignite The anti cycling period may be changed via the control panel to 6 minutes or alternatively switched off On reaching the heating demand the burner will shut down and the central heating pump continues to run for a further one minute period af...

Page 12: ...essure factory setting or central heating water temperature See User s programme page 9 If the central heating water pressure is too low or too high a warning symbol C is shown on the diagnostic display Further information is given in Section 12 of these instructions q Hot water button fig 2 6 If required the heating of domestic hot water may be switched off using the hot water button Pressing the...

Page 13: ...alue The user programme is terminated automatically after five minutes from when the last input action was carried out Alternatively exit from the programme is achieved by pressing the Reset button Operational perimeters accessible via the users programme are given in Table 2 the factory settings being underlined Further information on setting operation perimeters is given in the Atmos Multi Servi...

Page 14: ...ination This incline will prevent condensation from gathering in the flue gas discharge pipe and will also reduce the chance of icicles forming over horizontal pipe ends in extreme weather conditions On horizontal terminations the air supply pipe must be led to outside with a minimum 0 3 angle to prevent the ingress of rainwater Similarly provisions should be made to prevent the ingress of rainwat...

Page 15: ...5 Condensate disposal Provisions must be made for the safe disposal of condensate produced when the Atmos Multi is in operation The condensate drainage pipework must be run in an acid resistant material such as plastic waste pipe Copper or steel pipe must not be used The pipework must incorporate a minimum 1 20 downward slope towards its point of termination which ideally should be an internal soi...

Page 16: ...g and maintenance of services supplying water for domestic use within buildings and their curtilages Appendix E section E2 and tables 21 The discharge pipe must be installed with a continuous fall towards its point of termination which ideally should be below a fixed grating and above the water seal in a trapped gully Where this is not possible or practical then the discharge pipe may terminate ei...

Page 17: ...ture relief valve is 9 0m Subtract the resistance for 4 No 22mm elbows at 0 8m each 3 2m Therefore the maximum permitted length equates to 5 8mwhich is less than the actual length of 7m Therefore calculate the next largest size 28mm Maximum resistance allowed for a straight length of 28mm pipe D2 from a G temperature relief valve is 18m Subtract the resistance for 4 No 28mm elbows at 1 0 m each 4m...

Page 18: ... the wooden pallet provided Under no circumstances must it be stored vertically The appliance is protected by a cardboard box and delivered as standard with q Mounting bracket q Fixing pack consisting of 2 wall plugs 2 bolts and 2 washers q Burner inspection window q Automatic de aerator q Siphon q Template q Guarantee registration card Operating instructions and Installation instructions In addit...

Page 19: ...e is required fig 9 fig 10 Figure 9 Dimensions minimum clearances Figure 10 Dimensions minimum clearances 7 3 Boiler location The Atmos Multi is not suitable for external installations While the appliance itself is provided with integral frost protection it must however be installed in a room that stays free of frost even in extremely cold conditions This is to prevent pipes or the safety valves f...

Page 20: ... of sufficient size to permit access for inspection and servicing or removal of the boiler 7 4 Wall mounting the boiler Taking into account the clearances required for servicing and maintenance tape the provided template onto the chosen wall position ensuring it is level and the correct way up Mark the position of the fixing holes for the boiler mounting bracket Drill the fixing holes using a 16mm...

Page 21: ...ional 90 or 45 bend however reduces the maximum permitted flue length by 3m and 1m respectively The duct and fittings are push fitted together being sealed by the fittings integral O ring fig 12 On assembly it must be ensured that aluminium duct is square and burr free prior to being pushed into the fitting Failure to do so may result in damage to the sealing O ring When connecting to the twin pip...

Page 22: ...or heating system the plastic hoses pipes used must either meet BS7291 having a class S rating or DIN 4726 4729 having an air permeability less than 0 1 g m at 40ºC q In a radiator system the plastic hoses pipes used must either meet BS7291 having a class S rating or DIN 4726 4729 having an air permeability less than 0 1 g m at 85ºC in a twenty four hour period Connection of the Atmos Multi to a h...

Page 23: ...ti boiler Expansion vessels are available in 8 12 or 18 litre sizes with the Robokit and are coloured RED Table 5 provides guidance to the size of expansion vessel required for systems fitted with steel panel radiators in a two storey house Consult Atmos Heating Systems for further information and advice for non standard systems Note The red primary expansion vessel must not be confused with the b...

Page 24: ...cock The mains pressure kit must be assembled as shown in fig 18 in the following manner Figure 18 Mains pressure kit assembly q Connect the UV3 manifold to the boilers15mm cold water inlet supply pipe colour coded blue using the 22mm x 15mm compression reducing set supplied q Connect the 22mm incoming cold water main supply to the inlet of the UV3 combined 22mm stop tap and pressure reducing valv...

Page 25: ...ided below the tundish before the fitting of any bends q The discharge pipe must be ran to an external drain terminating in a safe place where there is no risk to persons in the vicinity of the discharge The discharge pipe must consist of metal preferably copper q If the length of discharge is more than 9m equivalent length a bend has an equivalent length of 0 8m a larger pipe must be fitted see S...

Page 26: ... return must not pass through the UV3 manifold If the secondary return loop has a volume in excess of 1 litre a larger potable expansion vessel should be used Contact Atmos Heating Systems for further advice A non return valve must be fitted to the return loop to prevent the back flow of cold water to the hot water taps Fig 20a Figure 20a Hot water secondary circulation 7 10 Connecting the gas sup...

Page 27: ... connection to the purposely installed 32mm dia condensate drainage pipe work fig 23 For condensate drainage pipework refer to Section 6 5 of these instructions Figure 23 Condensate discharge arrangement 7 12 Connecting the mains electricity All electrical connections to the mains supply must be made in full accordance with the current I E E regulations The boiler must be earthed and connected via...

Page 28: ...at It is recommended that the room thermostat is not set lower than 15ºC during the winter months Where a wireless room thermostat is employed consult the thermostat s manufacturer instructions for installation A wiring diagram of the Atmos Multi is given as figure 24 Figure 24 Atmos Multi wiring diagram Important Note Under no circumstances must any electrical power be input to the room thermosta...

Page 29: ...ATMOS MULTI version 2002 Page 29 8 Commissioning Note We include Benchmark Logbooks with every boiler and advise that they are filled in during the commissioning procedure ...

Page 30: ...g this process and topped up when required q Air must be vented from the boiler pump by unscrewing the pump s integral vent plug fig 26 and allowing water to bleed for a few seconds taking care not to allow water to splash onto the boiler s electric parts This process may have to be repeated two or three times during the filling process Figure26 Venting the pump q Test the operation of the system ...

Page 31: ...t during filling the filter on the UV3 pressure reducing valve must be removed and cleaned as necessary fig 28 8 3 Appliance operation The appliance may be put into operation by the follow procedure q With the appliance manual gas tap in the off position switch on the electrical supply to the boiler If a letter L appears on the diagnostic display the boiler has been wired with reversed polarity q ...

Page 32: ...ipple provided on the gas valve fig 22 The gas pre pressure reading must be at least 20mbar q Check the burner s gas rate by stopwatch and meter On the maximum input of 24kW or 32kW depending on boiler model the time taken to use 24 litres or 32 litres of gas respectively should be 33 seconds 2seconds Note The appliance burner pressure is factory set and sealed The burner pressure can only be meas...

Page 33: ...ependently protected from frost The boiler s built in frost protection facility will only safeguard the appliance itself 9 3 Draining the boiler Hot water tank q Turn off the cold water mains stop tap and open the domestic hot taps q Connect a flexible hose from the black drain tap on the UV3 manifold into the tundish The water from the hot water tank will now flow into the waste pipe via the funn...

Page 34: ...etting of the high position are determined by the setting of the low position If the flame picture is not correct the O2 or CO2 percentage of the flue gas must be measured 2 Measuring the O2 or CO2 concentration of the flue gas The O2 or CO2 measurement of the flue gas must be undertaken using an analyser calibrated to a precision of 0 2 Measurements of the flue gas O2 or CO2 concentration mu st b...

Page 35: ...ated on the appliance s combustion air inlet must be inspected for damage and cleaned or replaced where necessary 8 Inspecting the siphon Remove the siphon cap at the bottom of the appliance and check the cap for the presence of aluminium oxide If a quantity of aluminium oxide is present the heat exchanger will require cleaning see Section 5 2 The siphon cap must be firmly replaced following inspe...

Page 36: ...water tank inspection 1 Cleaning the outlet casting Using a 8mm socket release the 3 fixing nuts securing the outlet casting to the base of the heat exchanger and remove the casting by gently separating it from the push fit connection with the condensate trap fig 31 Remove the flue baffle by turning its base locking T bar through 90º Inspect the outlet casting and baffle cleaning where necessary F...

Page 37: ...r and fins using a soft brush Re assemble the boiler fitting the burner assembly flue baffle and outlet casting in reverse order to dismantling Ensure all components are correctly sealed and located 4 Inspection of air flue gas discharge system Inspect the air supply flue discharge system throughout its entirety ensuring that it is in sound condition with no damage to the pipework or joints Inspec...

Page 38: ...ion and remove the valves Push on electrical connections fig 36 Unscrew and remove the gas injector nozzle from the gas valve assembly fig 37 Release the valves four fixing bracket retaining bolts using an 8mm spanner and remove gas valve fig 38 Fit replacement gas valve in reverse order Figure 36 Figure 37 Figure 38 Reinstate boiler operation and check gas valve settings Refer to section 10 1 11 ...

Page 39: ...ng the two cross headed fixing screws fig 41 Fit the new electrode in reverse order checking that the electrode s distances between the burner and earth pin are 5mm and 3 5mm respectively q Ionisation electrode Detach the ionisation electrode from burner manifold by releasing the two cross headed fixing screws fig 41 Fit new electrode in reverse order checking that a 10mm gap exists between the el...

Page 40: ...e boiler components plug in electrical connections from the control unit fig 46 and remove control panel by gently pulling it forwards Fit replacement control panel in reverse order checking that correct polarity is maintained on connection to the mains isolation switch 11 9 Pump head Disconnect the electrical connections from the pump terminal block fig 45 Release the two bolts securing the pump ...

Page 41: ...ical connections and unscrew the sensor from its fitting using a 15mm spanner fig 48 Fit the replacement sensor in reverse order Figure 48 11 12 Temperature pressure relief valve Drain the domestic hot water system refer to section 9 3 Release the valve s outlet 22mm compression fitting to the discharge pipe fig 49 Unscrew the temperature pressure relief valve and remove Fit replacement valve in r...

Page 42: ...e central heating installation or appliance to function correctly The Atmos Multi has three types of malfunctions that can be reported via the diagnostic display being Warning report Block report Malfunction report q Warning report A letter appearing on the diagnostic dis play for 1second in every 5 identifies a warning report The appliance continues to operate but the function to which the report...

Page 43: ... appliance can only be unlocked by pressing the reset button A flashing number or letter on the diagnostic display indicates a malfunction fig 56 Figure 56 Malfunction report On resolving a malfunction press the reset button once If the appliance does not unlock press the reset button again after approximately 15 seconds If the malfunction persists consult the Atmo s Multi Service Manual ...

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