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4.1 DELIVERY 

Due to the weight of the appliance it may be necessary for 

two people to lift and attach the appliance to its mounting. The 

appliance is contained within a heavy-duty cardboard carton. 

Lay the carton on the floor with the writing the correct way up.

4.2 CONTENTS

Contained within the carton is:

•  the boiler

•  the wall bracket 

•  carton template

•  an accessories pack containing appliance service connections 

and washers

•  the instruction pack containing the installation, servicing & user 

instructions, guarantee registration card and a 3-amp fuse.

4.3 UNPACKING

At the top of the carton pull both sides open – do not use a 

knife – unfold the rest of the carton from around the appliance, 

carefully remove all protective packaging from the appliance and 

lay the accessories etc. to one side. Protective gloves should 

be used to lift the appliance, the appliance back-frame should 

be used for lifting points.

4.4 PREPARATION FOR MOUNTING THE 

APPLIANCE

The appliance should be mounted on a smooth, vertical, non-

combustible surface, which must be capable of supporting the 

full weight of the appliance. Care should be exercised when 

determining the position of the appliance with respect to hidden 

obstructions such as pipes, cables, etc.

When the position of the appliance has been decided – using 

the template supplied – carefully mark the position of the wall-

mounting bracket (see fig. 10) and flue-hole (if applicable).

4.5  FITTING THE FLUE

The top flue outlet permits both horizontal and vertical flue ap-

plications to be considered, alternatively, the Vokèra twin flue 

system can be utilised if longer flue runs are required. 

4.5.1  CONCENTRIC HORIZONTAL FLUE

(For concentric vertical flue, see 4.5.2).

The appliance can be used with either the Vokèra condensing 

60/100mm concentric flue system or the optional 80/125mm 

concentric flue system. 

NOTE

These instructions relate 

only

 to the Vokèra condensing 

60/100mm concentric flue system. For specific details on the 

installation of the 80/125mm concentric flue system please refer 

to the instructions supplied. The appliance flue outlet elbow can 

be rotated through 360º on its vertical axis. In addition the flue 

may be extended from the outlet elbow in the horizontal plane 

(see 2.9). A reduction must also be made to the maximum length 

(see table below) when additional bends are used.

Reduction for additional bends

Bend 

Reduction in maximum flue length for each bend

45º bend

1.0 metre (60/100) - 1.0 metre (80/125)

90º bend

1.0 metre (60/100) - 1.0 metre (80/125) 

Horizontal flue terminals and accessories

Part No.

Description 

Length

29450120

Horizontal flue kit

900mm

29450121

Telescopic flue kit

455/630mm

522

Plume management kit

1370mm

29450123

90-degree bend

N/A

29450124

45-degree bends (pair)

N/A

29450125

500mm extension

500mm

29450126

1000mm extension

1000mm

29450127

2000m extension

2000mm

29450128

Telescopic extension

372/519mm

529

Wall bracket pack (5)

208mm

Using the template provided (

A

), mark and drill a 125mm hole 

for the passage of the flue pipe. The hole should be drilled to 

ensure any condense fluid that forms, is allowed to drain back to 

the appliance (see fig. 12). The fixing holes for the wall-mounting 

bracket should now be drilled and plugged, an appropriate type 

and quantity of fixing should be used to ensure that the bracket 

is mounted securely. Once the bracket has been secured to 

the wall, mount the appliance onto the bracket.

 Fig. 10

Fig. 11

Terminal or 

extension

Outer clamps

FITTING THE TELESCOPIC HORIZONTAL FLUE KIT

In some instances It may necessary to cut the inner 60mm pipe 

of the flue bend at the point indicated (fig.13 pos. A) to allow 

for easier insertion to the boiler flue spigot.

FITTING THE HORIZONTAL FLUE KIT

Carefully measure the distance from the centre of the appliance 

flue outlet to the edge of the finished outside wall (dimension 

X). Add 65mm to dimension X to give you dimension Y (see 

fig 12). Measure dimension Y from the terminal end of the con-

centric flue pipe and cut off the excess ensuring any burrs are 

removed. Pass the concentric flue pipe through the previously 

drilled hole. Fit the flue bend to the boiler flue outlet and insert 

the concentric flue pipe into the flue bend ensuring the correct 

seal is made.

 

Using the clamp, gasket, and screws supplied, 

secure the flue bend to the appliance flue spigot. 

NOTE

Fit the internal (white) trim to the flue assembly prior to con-

necting the flue pipe to the bend.

You must ensure that the entire flue system is properly sup-

ported and connected. Seal the flue assembly to the wall using 

cement or a suitable alternative that will provide satisfactory 

weatherproofing. The exterior trim can now be fitted.

SECTION 4 - INSTALLATION

Summary of Contents for Easi-Heat Plus 25C

Page 1: ...D 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 Easi Heat Plus C High effici...

Page 2: ...WATER CIRCULATION 12 3A 7 ELECTRICAL SUPPLY 12 3A 8 MOUNTING ON A COMBUSTIBLE SURFACE 12 3A 9 TIMBER FRAMED BUILDINGS 12 3A 10 INHIBITORS 12 3A 11 SHOWERS 12 3A 12 DECLARATION OF CONFORMITY 12 SECTIO...

Page 3: ...has been designed to meet and exceed the very latest standards in gas central heating technology and if cared for will give years of reliable use and efficiency Please therefore take some time to rea...

Page 4: ...ounter clockwise to reduce the temperature range 40 C 80 C for standard central heating The automatic temperature control function SARA is factory disabled To enable this function please contact the V...

Page 5: ...ntly hot enough it may be necessary to reduce the flow of water at the hot water outlet tap NOTE If the appliance fails to ignite during the ignition sequence it will enter a lockout condition Should...

Page 6: ...position To select OFF mode move the selector switch in the upper position APPLIANCE STATUS LED AND FAULT CODES Fig 3 4 WHAT IF 5 SETTING THE VOK RA Advice for homeowners Please contact Vok ra Custome...

Page 7: ...tained from Vok ra customer services When the product reaches the end of its life it should not be disposed of as solid urban waste but should be brought to a separated waste collection facility Easi...

Page 8: ...n and the boiler will perform a three minute anti cycle timer delay When the request for heat has been satisfied the appliance pump and fan may continue to operate to dissipate any residual heat withi...

Page 9: ...ght mm 792 Width mm 405 Depth mm 253 Dry weight kg 27 30 2 6 Clearances Easi Heat Plus 25C Easi Heat Plus 29C Sides 12mm Top 150mm from casing or 25mm above flue elbow whichever is applicable Bottom 1...

Page 10: ...rature boilers 37 C and for other heaters 50 C return temperature at heater inlet Seasonal space heating energy efficiency class A Water heating energy efficiency class A Parameter Symbol Value Unit P...

Page 11: ...lcony level 300 mm J From a surface or boundary facing the terminal 600 mm K From a terminal facing a terminal 1200 mm L From an opening in the car port into the building 1200 mm M Vertically from a t...

Page 12: ...c directly from the mains supply must be provided see fig 8 This method of filling complies with the current Water Supply Water Fittings Regulations 1999 and Water Bylaws 2000 Scotland If an alternati...

Page 13: ...s to be fitted on a wall of combustible material There is no requirement to protect the wall 3 9 TIMBER FRAMED BUILDINGS If the appliance is to be fitted in a timber framed building it shouldbefittedi...

Page 14: ...LOW PRESSURE SEALED SYSTEM An alternative method of filling the system would be from an independent make up vessel or tank mounted in a position at least 1 metre above the highest point in the system...

Page 15: ...talsobemadetothemaximumlength see table below when additional bends are used Reduction for additional bends Bend Reduction in maximum flue length for each bend 45 bend 1 0 metre 60 100 1 0 metre 80 12...

Page 16: ...flue length see table below Reduction for bends Bend Reduction in maximum flue length for each bend 45 bend 1 0 metre 60 100 1 0 metre 80 125 90 bend 1 0 metre 60 100 1 0 metre 80 125 Vertical flue te...

Page 17: ...no less than 20mm diameter to the outlet pipe and ensure it discharges in accord ance with building regulations or other rules in force 4 7 ELECTRICAL CONNECTIONS The boiler is supplied with a 2 metre...

Page 18: ...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 OPERATION CHECKS Before attempting the initial lighting of the appl...

Page 19: ...this appliance including these instructions and explain the importance of keeping them in a safe place Explain to the user how to isolate the appliance from the gas water and electricity supplies and...

Page 20: ...nd remove the pump outlet pipe A from the pump assembly combustion chamber connection Remove the expansion pipe locking pin B from the top of the pump assembly and withdraw the flexible pipe Locate an...

Page 21: ...the reverse order Check and adjust burner pressure settings WARNING A GAS TIGHTNESS CHECK MUST BE CAR RIED OUT 6 13 ELECTRODES fig 27 Carry out component removal procedure as described in 6 4 Remove t...

Page 22: ...e carefully withdraw the by pass cartridge S1 and or DHW non return cartridge T1 Ensure all seals are in good condition taking care to ensure they are replaced correctly Replace in the reverse order e...

Page 23: ...anger DisconnectthewiringtotheDHWflowswitch Slacken and unscrew the inlet connection Unscrew the nut E2 Lift the DHW flow switch housing from its seating If necessary remove the locking pin F2 from th...

Page 24: ...e gas rate to 75 for a period of 15 minutes The speed of the fan and therefore the output of the boiler is determined by the temperature of the water sensed by the flow temperature sensor consequently...

Page 25: ...tion analysis check can easily be carried out on the appliance via the test points located on the top of the applian ce see 7 3 Operate the boiler in combustion analysis mode see 7 3 1 Insert the flue...

Page 26: ...o proceed to next stage If not see 7 7 4 connect test leads between the Neutral Earth connec tions at the appliance terminal strip The meter should read approximately 0 15Vac If so polarity is correct...

Page 27: ...particular control Further guidance on the recom mended practice for the installation of external controls can be found in CHeSS HC5 HC6 www energyefficiency gov uk 8 4 VOK RA LOWER COVER MECHANICAL...

Page 28: ...ic hot water temperature WPS Water pressure switch S E Spark electrode TSC2 Ignition transformer 3W 3 way motor F O H T Flow over heat thermostat FS Flue sensor FT Flow thermistor NTC RS Return thermi...

Page 29: ...37 0 mbar 37 0 mbar Heating maximum gas rate kg hr 1 55 1 94 DHW maximum gas rate kg hr 1 94 2 25 Minimum gas rate kg hr 0 39 0 47 Injector size 3 8 mm 3 9 Silencer flange 27 mm 29 mm CO2 maximum outp...

Page 30: ...TO MINIMUM RATE In accordance with section 7 3 set boiler to operate at minimum rate to minimum load condition Allow sufficient time for combustion to stabilise YES Is CO 350ppm and CO CO2 ratio less...

Page 31: ...ommissioning checklist completed in full To instigate the boiler guarantee the boiler needs to be registered with the manufacturer within one month of the installation To maintain the boiler guarantee...

Page 32: ...terlock Provided ALL SYSTEMS The system has been flushed and cleaned in accordance with BS7593 and boiler manufacturer s instructions Yes What system cleaner was used What inhibitor was used Quantity...

Page 33: ...gister No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm AND CO Comments Signature SERVICE 04 Date Engineer name Company name Telephone No Gas safe register No Record At max rate C...

Page 34: ......

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Page 36: ...1HG enquiries vokera co uk www vokera co uk www vokera ie Sales General Enquires T 0844 391 0999 F 0844 391 0998 Vok ra Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vok ra Limited...

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