VOKERA Unica BHE Installation & Servicing Instructions Manual Download

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Supplied By www.heating spares.co Tel. 0161 620 6677

UNICA BHE

Table 5

POS.

DESCRIPTION

32 BHE

Condensing exchanger assembly

R01005366

Conveyor

R10028623

Flue drain connection

R10028421

Nut screw

R10020625

475

Washer Ø 125

R10026323

482

Washer

R10026366

487

Washer Ø 60

R10026345

552

Washer Ø 60

R10028426

614

High limit thermostat

20001564

700

Combustion cable

20000765

482

475

700

487

614

552

Summary of Contents for Unica BHE

Page 1: ...SE INSTRUCTIONS TO BE RETAINED BY USER Vok ra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK...

Page 2: ...5 Pre operation checks 17 5 6 Initiallighting 17 5 7 Checking gas pressure combustion analysis 17 5 8 Final flushing of the heating system 18 5 9 Setting the boiler operating temperature 18 5 10 Setti...

Page 3: ...ith an annular co axial combustion air intake that can be rotated horizontally through 360 degrees for various horizontal or vertical applications The Unica BHE can also be used with the Vokera twin f...

Page 4: ...stic hot water to be pre heated DHW temperature selector Move the selector clockwise to increase the hot water outlet temperature or counter clockwise to reduce the temperature Heating temperature sel...

Page 5: ...irement When the appliance reaches the desired tempera ture the burner will shut down and the boiler will perform a three minute anti cycle timer delay When the request for heat has been satisfied the...

Page 6: ...ht kg 2 6 Clearances UNICA BHE Range Sides Left 12mm Right 25mm Top 150mm from casing or 25mm above flue elbow whichever is applicable Bottom 150mm Front 600mm 2 7 Connections UNICA BHE Range Flow ret...

Page 7: ...he car port into the building 1200 mm M Vertically from a terminal on the same wall 1500 mm N Horizontally from a terminal on the same wall 300 mm P From a structure to the side of the vertical termin...

Page 8: ...5440 PART 1 FLUES BS 5440 PART 2 FLUES VENTILATION BS 5449 PART 1 FORCED CIRCULATION HOT WATER SYSTEMS BS 5546 INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES BS 6798 INSTALLATION OF BOI...

Page 9: ...r see fig 5A The cold feed from the make up vessel or tank must be fitted with an approved non return valve and stopcock for isolation purposes The feed pipe should be connected to the return pipe as...

Page 10: ...g must be considered If installed less than 2m above a pavement or platform to which people have access including balconies or flat roofs the terminal must be protected by a guard of durable material...

Page 11: ...fitted in accordance with I S 813 and local Building Regulations The Institute of Gas Engineers publication IGE UP 7 Guide for Gas Installations in Timber Frame Buildings gives specific advice on this...

Page 12: ...iance has been decided using the template supplied carefully mark the position of the wall mounting bracket see fig 8 and flue hole if applicable If you intend to run the pipe work vertically behind t...

Page 13: ...A 524 45 degreebends pair N A 525 500mmextension 500mm 526 1000mmextension 1000mm 527 2000mextension 2000mm 528 Telescopic extension 350 730mm 529 Wall bracket pack 5 208mm Using the template provide...

Page 14: ...move any burrs and check that all seals are lo cated properly You must ensure that the entire flue system is properly supported and connected Seal the flue assembly to the wall using cement or a suita...

Page 15: ...n that of a concentric flue system It can be used for horizontal or vertical applications however the twin flue system must be converted to the dedi cated concentric flue kit for termination It is ess...

Page 16: ...onto the concentric to twin converter ensuring that the exhaust pipe connects to the exhaust connection on the con centric to twin converter If necessary cut the plain ends male of the twin flue pipe...

Page 17: ...GAS fig 16 The appliance is supplied with a 15mm service valve connect a 15mm pipe to the inlet of the valve and tighten both nuts NOTE Itwillbenecessarytocalculatethediameterofthe gas supply pipe to...

Page 18: ...HE AP PLIANCE The supply cable from the isolator to the appliance must be 3 core flexible sized 0 75mm to BS 6500 or equivalent Wiring to the appliance must be rated for operation in contact with sur...

Page 19: ...er and system from the lowest points Open the drain valve full bore to remove any installation debris from the boiler prior to lighting Refill the boiler and heating system as described in 5 3 5 5 PRE...

Page 20: ...rate restrictor that limits the maximum flow rate that can be drawn through the appliance The restrictor eliminates the need to manually adjust the DHW flow rate However if it is felt necessary to fur...

Page 21: ...romanydebrisorobstruction Check and clean if necessary the condense trap to ensure correct operation 6 3 REPLACEMENTOFCOMPONENTS Although it is anticipated that this appliance will give years of relia...

Page 22: ...t component removal procedure as de scribed in 6 4 Unclip and remove the air chamber front cover Unclip the return thermistor from the return inlet pipe Disconnect thermistor electrical plug Replace i...

Page 23: ...crews A for electrode and remove Remove the retaining nut C for condense sensor D and remove 6 15 BURNER fig 30 Carry out component removal procedure as described in 6 4 Unclip and remove the air cham...

Page 24: ...C and condense connections on the heatexchanger Locateandremovethe4 screws thatsecuretheheatexchangertothecombustion chamber D Movetheheatexchangertotheright and disconnect it from the flue collector...

Page 25: ...TUATOR fig 35B Carry out component removal procedure as de scribed in 6 4 Remove the locking pin F that secures the actuator G to the heating manifold Disconnect the electrical plug from the actuator...

Page 26: ...l other functions are disabled minimumpoweroperatingperiod anti cycle set point etc Once enabled the CO function will remain active for a 15 minute pe riod oruntilthefunctionismanuallydeactivated FROS...

Page 27: ...led on the appliance data badge 7 3 1 CHECKING ADJUSTINGTHEAPPLIANCEFAN SPEEDS Move the selector switch to the OFF position and remove the 3 selector knobs 7 3 2 ABSOLUTE MAX FAN SPEED Locate the MAX...

Page 28: ...eck wiring check electrical supply No hot water Check pipe work No heating Check external controls Fault code Possible cause 10 Check gas supply check flue system check polarity 7 8 ELECTRICALCHECKS A...

Page 29: ...W ON hysterisis C SP 3 Anti cycle delay 3 min Pump over run 30 sec Low output min output Min 25 CO function max temp C 95 CO re light temp C 75 CO function time 15 min Flow NTC max temp C 95 High limi...

Page 30: ...ntact Vokera technical fordetailedinstructiononspecificOT controls vokera external sensor 8 3 OTHERDEVICES Contactthecontrolsmanufacturerand orVokera technical department should you require more speci...

Page 31: ...onnection to PCB low voltage F O H T Flow over heat thermostat F T Fume thermostat G Cable connector M3 M5 Terminal strip for supply in clock room thermostat M2 M4 Terminal strip for condense pump low...

Page 32: ...028557 26 Instrumental panel 20011082 27 Knob assembly R10028559 31 Instrumental panel 20011393 40 Door panel R10030136 64 Frame assembly R10028809 65 Case cover 20011392 67 Wiring box R01005468 78 Hi...

Page 33: ...R5041 248 Washer R5208 265 Washer R5236 266 Washer R5237 290 Clip R2165 292 O ring R7999 351 Nut R1823 353 Nut R1824 636 Detector 20004978 24 201 26 40 200 7 201 265 30 200 201 2 292 4 202 636 22 31...

Page 34: ...19 Glass stopper assembly R10026328 27 Plug R10023805 35 Air gas conveyor R10028420 39 Pipe 20000769 46 Gas diaphragm R10027161 67 Washer 62 R10026322 69 Tryton R10028425 72 Mixer R10024295 79 Flame...

Page 35: ...ing exchanger assembly R01005366 7 Conveyor R10028623 12 Flue drain connection R10028421 27 Nut screw R10020625 475 Washer 125 R10026323 482 Washer R10026366 487 Washer 60 R10026345 552 Washer 60 R100...

Page 36: ...ance from the electrical supply and remove the appliance casing as described in 4 7 1 Set the flue gas analyser to read CO2 and inserttheprobeintotheflueanalysistestpoint A B fig 35 Restore the electr...

Page 37: ...ted according to the respective appliance specifica tion as detailed on the appliance data badge 10 7 1 CHECKING ADJUSTINGTHEAPPLIANCEFAN SPEEDS Move the selector switch to the OFF position and remove...

Page 38: ...ns and or BS5546 BS6798 Yes ALL INSTALLATIONS If required by the manufacturer record the following CO2 OR CO ppm OR CO CO2 Ratio The heating and hot water system complies with the appropriate Building...

Page 39: ...CORGI ID Number Comments Signature SERVICE 7 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number CORGI ID Number Comments Signature SERVICE 9 Date Energy Effi...

Page 40: ...ies vokera co uk www vokera co uk www vokera ie Sales General Enquires T 0844 391 099 F 0844 391 0998 Vok ra Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vok ra Limited reserve th...

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VOKERA Unica BHE, Installation & Servicing Instructions Manual

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Summary of Contents for Unica BHE

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