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User’s

3.  CONDENSATE DRAIN

This appliance is fitted with a siphonic condensate trap system 

that reduces the risk of the appliance condensate from freezing.  

However should the condensate pipe to this appliance freeze, 

please follow these instructions:
a.  If you do not feel competent to carry out the defrosting 

instructions below please call your local Licensed & 

Registered installer for assistance.

b.  If you do feel competent to carry out the following instructions 

please do so with care when handling hot utensils.  Do not attempt 

to thaw pipework above ground level.

If this appliance develops a blockage in its condensate pipe, its 

condensate will build up to a point where it will make a gurgling 

noise prior to locking out an “

L 2

” fault code.  If the appliance is 

restarted it will make a gurgling noise prior to it locking out on a 

failed ignition “

L 2

” code.

To unblock a frozen condensate pipe;
1.  Follow the routing of the plastic pipe from its exit point on the 

appliance, through its route to its termination point.

  Locate the frozen blockage.  It is likely that the pipe is frozen 

at the most exposed point external to the building or where 

there is some obstruction to flow.  This could be at the open 

end of the pipe, at a bend or elbow, or where there is a dip in 

the pipe in which condensate can collect.  The location of the 

blockage should be identified as closely as possible before 

taking further action.

2.  Apply a hot water bottle, microwaveable heat pack or a warm 

damp cloth to the frozen blockage area.  Several applications 

may have to be made before it fully defrosts.  Warm water 

can also be poured onto the pipe from a watering can or 

similar.  DO NOT use boiling water.

3.  Caution when using warm water as this may freeze and 

cause other localised hazards.

4. 

Once the blockage is removed and the condensate can flow 

freely, restart the appliance. (Refer to “To Start the boiler”)

5.  If the appliance fails to ignite, call your Licensed & Registered 

engineer.

Preventative solutions

During cold weather, set the central heating temperature knob 

(A) to maximum, (Must return to original setting once cold spell is 

over).
Place the heating on continuous and turn the room thermostat 

down to 15ºC overnight or when unoccupied. (Return to normal 

after cold spell).

4.  LOSS OF SYSTEM WATER PRESSURE

The gauge (G) indicates the central heating system pressure. If 

the pressure is seen to fall below the original installation pressure 

of 100-200kPa (1 - 2 bar) over a period of time then a water 

leak may be indicated. In this event conduct the re-pressurising 

procedure as follows:

Re-pressurise via the automatic fill valve to 100kPa (1.0 bar) (if 

unsure contact your installer). After filling to 100kPa (1.0 bar), 

turn isolation valve off and press the “RESTART” button to restart 

the boiler.

If unable to do so or if the pressure continues to drop after filling 

a Licensed & Registered Engineer.

NOTE. THE BOILER WILL NOT OPERATE IF PRESSURE HAS 

REDUCED TO LESS THAN 30 KPA (0.3 BAR) UNDER THIS 

CONDITION.

5.  GENERAL INFORMATION

BOILER PUMP

The boiler pump will operate briefly as a self-check once every 24 

hours, regardless of system demand.

MINIMUM CLEARANCES

Clearance of 165mm (6 

1

/

2

”) above, 100mm (4”) below, 2.5mm (

1

/

8

”) 

at the sides and 450mm (17 

3

/

4

”) at the front of the boiler casing 

must be allowed for servicing.

Bottom Clearance

Bottom clearance after installation can be reduced to 5mm
This must be obtained with an easily removable panel to provide 

the 100mm clearance required for servicing.

ESCAPE OF GAS

Should a gas leak or fault be suspected on your property before or 

including the meter, please call Gas Leaks & Emergency Services 

on 1800 GAS LEAK (1800 427 532). For any suspected leaks after 

the meter please call a licensed gas fitter. 

Ensure that;

-  All naked flames are extinguished

-  Do not operate electrical switches

-  Open all windows and doors

CLEANING

For normal cleaning simply dust with a dry cloth.  To remove stubborn 

marks and stains, wipe with a damp cloth and finish off with a dry cloth.  

DO NOT use abrasive cleaning materials.

MAINTENANCE

The appliance should be serviced at least once a year by a 

Licensed & Registered Engineer.

Содержание LOGIC+ SYSTEM S18

Страница 1: ...you can be assured conform to the safety and performance specification that we require Do not use reconditioned or copy parts that have not been clearly authorised by Hunt Heating December 2020 UIN 2...

Страница 2: ...2 Installation and Servicing...

Страница 3: ...ING THE HUNT HEATING INSTALLER HELPLINE 1300 00 1800 NOTE BOILER RESTART PROCEDURE To restart the boiler press the RESTART button The boiler will repeat the ignition sequence if a heat demand is prese...

Страница 4: ...Testing 32 2 25 Initial Lighting 33 2 26 General Checks 34 2 27 Restart Procedure 34 2 28 Accessing The Installer Mode 35 2 29 Handing Over 35 3 SERVICING 36 3 1 Servicing Schedule 36 3 2 Boiler Front...

Страница 5: ...t Q Net CV kW Gross CV kW 4 9 18 1 6 1 30 4 5 4 20 1 6 7 33 7 Boiler output non condensing Mean 70 C kW 4 8 18 0 6 1 30 3 Boiler output condensing Mean 40 C kW 5 1 19 1 6 4 31 0 Gas Consumption MJ h 1...

Страница 6: ...Helpline on the back Page Page Burner operating pressure n a Central heating flow temp measure and record Central heating return temp measure and record For combination boilers only Scale reducer 14...

Страница 7: ...ation pipework Pipework from the boiler is routed downwards Data Plate The boiler model and serial number can be located on the bottom of the boiler casing shown in Sections 1 16 1 17 Water Gas Connec...

Страница 8: ...iler must be installed on a flat and vertical wall capable of adequately supporting the weight of the boiler and any ancillary equipment The boiler bracket supplied with the unit must be used as stand...

Страница 9: ...ty meter or fuse box P see Note 3 500 500 f From a drain pipe or soil pipe 150 75 g Horizontally from any building structure or obstruction facing a terminal 500 500 h From any other flue terminal cow...

Страница 10: ...e a flow of water should all valves be in the closed position 1 14 ELECTRICAL SUPPLY WARNING Electrical safety of the appliance is reached only when it is correctly connected to an efficient earthing...

Страница 11: ...Refer to Section 2 19 The following minimum clearances must be maintained for operation and servicing Additional space will be required for installation depending upon site conditions Front clearance...

Страница 12: ...Gas Connection W A L L EXTERNAL ENCLOSURE 1 17 BOILER DIMENSIONS SERVICES CLEARANCES EXTERNAL all dimensions in mm The boiler connections are made on the boiler connection tails Refer to Section 2 19...

Страница 13: ...llation of an Autofill valve and required backflow prevention the system may be filled by the following method i Thoroughly flush out the whole system with cold water ii Fill and vent the system until...

Страница 14: ...n the remaining radiators to give around 20o C temperature drop at each radiator 3 Adjust the room thermostat and programmer to NORMAL settings 1 19 SYSTEM BALANCING CENTRAL HEATING The Logic System r...

Страница 15: ...223 FLUE MANIFOLD 224 FLUE MANIFOLD TOP 227 CLAMP RETAINING FLUE TURRET 228 HOSE CONDENSATE INTERNAL 229 SIPHON TRAP 231 CONDENSATE OUTLET CONNECTION 302 PCB 304 CONTROL THERMISTOR RETURN 306 ELECTROD...

Страница 16: ...SEMBLY Exploded View 239 Flue Turret 240 Flue Terminal 241 Flue Terminal Seal 242 External Flue Terminal Aperture Seal 501 Internal Boiler Accessory Pack 501 External Boiler Accessory Pack 520 Wall Mo...

Страница 17: ...ry Pack C Compression Coupler D Wall Mounting Plate E Installation User Instructions F Wall Mounting Template located on internal protective packaging A B C D E Unpack and check the contents Pack Cont...

Страница 18: ...ing its squareness by hanging a plumbline as shown 2 If fitting a side flue extend the flue centreline onto the side by 155mm on a standard wall fix 3 Mark the following on to the wall a The selected...

Страница 19: ...rovided for the wall mounting plate 3 Locate 2 No 14 x 50mm screws in the wall mounting plate one at each side in any of the 3 holes provided at each side and screw home Ensure mounting bracket is lev...

Страница 20: ...required for the masonry plugs used 3 Insert all 6 masonry plugs ensuring a flush fit to the wall and insert the top two mounting screws leaving screws approximately 10mm proud 4 Carefully lift the m...

Страница 21: ...turret Refer to Section 2 14 2 Ensure the plastic plugs are rmoved from both the CH and DHW connections before mounting the boiler Note Boiler may contain residual water 3 Lift the boiler onto the wal...

Страница 22: ...xternal black flue seal ensuring the inside of the outer lip is in contact with the terminal lip 4 Apply water to the flue turret seals and place the flue through the orifice ensuring full insertion a...

Страница 23: ...water as a lubricant during assembly The B pack terminal is classed as part of the maximum flue length It is IMPORTANT that all attachments are fitted in accordance to the installation instructions pr...

Страница 24: ...DETERMINING THE FLUE LENGTH AND FLUE PACKS REQUIRED CONT D FIGURE 1 Note Maximum permissible flue length is measured from centre line of appliance flue outlet to outside wall face 2 14 CUTTING SETTING...

Страница 25: ...4 Ensure the seam and the outlet terminal are at the top and fitted as shown FITTING THE TURRET Ensure the condense trap siphon is filled with water 1 Ensure the rubber seal is fitted correctly on th...

Страница 26: ...ector kit 3 Secure the vertical connector by applying downward pressure on the connector 4 Position the clamp on the top face of the flue manifold and push it horizontally backwards Locate both clamp...

Страница 27: ...lled access to a suitable discharge point should be one of the main factors considered in determining boiler location b Plastic with push fit or solvent connections c Internal plastic pipe work a mini...

Страница 28: ...TION IMPORTANT The gas service cock is sealed with a non metallic fibre washer which must not be overheated when making capillary connections Refer to Section 1 16 for details of the position of the g...

Страница 29: ...le and plug This must be connected to a permanent live supply and NOT switched by thermostats programmers If the supply cord is damaged it must be replaced by the manufacturer service agent or similar...

Страница 30: ...the cable from strain relief 5 Unscrew the L N E connections remove wires from connector 6 Remove the mains cable by pulling back through the grommet 7 Route the replacement cable through the grommet...

Страница 31: ...IVE IGNITION LIVE PE X2 PUMP LIVE DHW LIVE X3 PUMP GND X9 X8 OWC OWC OPENTHERM OPENTHERM OPENTHERM 5V CHIP COM BUS TX CHIP COM BUS 24V CHIP COM BUS GND CHIP COM BUS 5V CHIP COM BUS RX MAINS LIVE MAINS...

Страница 32: ...nd preset at the factory for operation on the gas type defined on the appliance data plate DO NOT adjust the air gas ratio valve Having checked That the boiler has been installed in accordance with th...

Страница 33: ...is closed and that the CH isolating valve are OPEN 4 Check that the electrical supply is OFF 5 Check that the boiler mode control knob B is OFF 6 Check that the gas service cock is OPEN 7 Slacken the...

Страница 34: ...he system HOT examine all water connections for soundness The system pressure will increase with temperature rise but should not exceed 250kPa 3 With the system still hot turn off the gas water and el...

Страница 35: ...Boiler restart procedure 10 After installation and commissioning please complete the Commissioning Checklist before handover to the customer IMPORTANT 11 A comprehensive service should be carried out...

Страница 36: ...on circuit the following must be checked The integrity of the flue system and the flue seals The integrity of the boiler combustion circuit and the relevant seals The operational working gas inlet pre...

Страница 37: ...2 bottom spring clips engage ensuring the 4 control knobs line up with the holes in the front panel 5 Re tighten the two retaining screws view from bottom of boiler view from top of boiler 3 1 2 5 3...

Страница 38: ...he gas control valve outlet and ease the pipe upwards rotate and then ease down to remove 3 Remove the extended nut on the fan mounting bracket 4 Lift off fan and venturi assembly 5 Undo the two M4 sc...

Страница 39: ...he burner head is a ceramic plaque construction Care must be taken to ensure that the burner is not placed down upon its face as this may cause damage to the ceramic 6 Brush off any deposits that may...

Страница 40: ...ction gaps are correct Refer to Sections 3 14 3 15 1 Ignition Electrode Flame Detection Reassemble the boiler in the following order 1 Ensure that the condensate trap siphon is full of water 2 Refit t...

Страница 41: ...ler Refer to Section 3 19 THE BOILER MUST NOT BE OPERATED WITHOUT THE FRONT PANEL FITTED 3 10 FAN REPLACEMENT 1 Refer to Section 3 8 2 Disconnect the electrical leads from the fan 3 Remove the clip fr...

Страница 42: ...r ensuring that the new gas seal supplied is located correctly in the injector housing 10 Check operation of the boiler Refer to Sections 2 25 2 26 3 12 BURNER REPLACEMENT 5 5 6 1 See Section 3 9 2 Re...

Страница 43: ...ns as shown 8 Reassemble in reverse order 9 Check the operation of the boiler Refer to Sections 2 25 2 26 3 14 IGNITOR ELECTRODE REPLACEMENT 1 Refer to Section 3 9 2 Unclip the return thermistor from...

Страница 44: ...der ensuring that the the earth lead is replaced 6 Check operation of the boiler Refer to Sections 2 25 2 26 Flame Detection Electrode 12 5mm Straight edge 1 Refer to Section 3 9 2 Remove the burner R...

Страница 45: ...ealing washer are in place and reconnect gas and electrical connections 7 Ensure all gas valve connections are gas tight with a gas soundness check up to the gas control valve 8 Check operation of the...

Страница 46: ...plug all lead connections to the PCB 5 Remove the 2 screws if applicable 6 Spring out the four side retaining clips and pull the PCB upwards to clear the corner retaining posts 7 Take the new PCB 8 Re...

Страница 47: ...and secure with the C clip 7 Refill the boiler 8 Check the operation of the boiler Refer to Sections 2 25 2 26 3 21 PRESSURE GAUGE REPLACEMENT 5 4 3 22 SAFETY RELIEF VALVE REPLACEMENT 1 Refer to Sect...

Страница 48: ...s the reverse of the above Ensure the air vent head o ring seal is in place when refitting and the new o ring is fitted to the return pipe top connection 7 Ensure the air vent cap is loose 8 Refill th...

Страница 49: ...in reverse order 7 Refill the boiler 8 Check operation of the boiler Refer to Sections 2 25 2 26 1 Refer to Section 3 9 2 Drain down the boiler Refer to Section 3 20 3 Unplug the electrical lead 4 Un...

Страница 50: ...to correctly match connecting pipe diameters 18 Ensure the trap siphon is filled with water Refer to Secion 3 19 19 Refill the boiler Refer to Section 2 19 20 Ensure all gas valve connections are gas...

Страница 51: ...circuit Refer to Section 3 20 7 Remove the retaining clip on the vessel water connection pipe 8 Support the expansion vessel and unscrew the 2 screws from the securing clamp located on the top of the...

Страница 52: ...tion 4 4 FALSE FLAME LOCKOUT GO TO Section 4 5 LOW WATER PRESSURE GO TO Section 4 6 FLAME LOSS GO TO Section 4 7 FAN FAULT GO TO Section 4 8 CONTROL NO FLOW THERMISTOR FAULT GO TO Section 4 9 RETURN T...

Страница 53: ...to Section 3 15 Check if the condensate pipe is blocked Check flue is installed correctly Replace as necessary NO Check gas supply and rectify fault NO YES Is 24Vdc supply available at the Gas Valve...

Страница 54: ...locked Check if flue is blocked Replace as necessary NO Check gas supply and rectify fault NO YES Is 24Vdc supply available at the Gas Valve while the flame is on YES Check spark generator and associa...

Страница 55: ...hms Is the Thermistor value correct YES YES NO NO Replace PCB Replace PCB Fit a new Thermistor Fit a new Thermistor Is there continuity between the PCB and Thermistor Is there continuity between the P...

Страница 56: ...he Timer Room Stat This is not boiler fault Ensure Voltage is supplied to boiler by rectifying external wiring 4 12 NO DISPLAY Is there 230Vac to the boiler at L and N see Section 4 11 NO Supply power...

Страница 57: ...s parts information and details of approved parts distributors are available from Hunt Heating Our Parts team are also available to help with your spare parts enquiries on 1300 00 1800 When calling an...

Страница 58: ...Not required What type of scale reducer softener has been fitted Brand Product Water meter fitted Yes No If yes DHW expansion vessel pre existing Fitted Not required Pressure reducing valve pre existi...

Страница 59: ...en this if the service engineers attendance visit was in between annual services to attend a non water facing component SERVICE INTERIM WORK ON BOILER delete as appropriate Date Engineer name Company...

Страница 60: ...en this if the service engineers attendance visit was in between annual services to attend a non water facing component SERVICE INTERIM WORK ON BOILER delete as appropriate Date Engineer name Company...

Страница 61: ...61 Installation and Servicing...

Страница 62: ...ed and all guidance has been followed Prior to its use the ECGA should have been maintained and calibrated as specified by the manufacturer The installer must have the relevant competence for use of t...

Страница 63: ...xed and supported as per instructions Check that flue and flue terminal are not obstructed Check that no seals e g Those on flue extensions have been displaced during installation Rectify if necessary...

Страница 64: ...veways Boulevarde Keysborough Victoria 3195 Tel 1300 00 1800 or 61 0 3 9798 5111 Fax 61 0 3 9798 5133 Email enquiries huntheat com au Website www huntheat com au Hunt Heating Technical Helpline 1300 0...

Страница 65: ...s that you can be assured conform to the safety and performance specification that we require Do not use reconditioned or copy parts that have not been clearly authorised by Hunt Heating December 2020...

Страница 66: ...ctly fitted and forming an adequate seal If the boiler is installed in a compartment then the compartment MUST NOT be used for storage purposes If it is known or suspected that a fault exists on the b...

Страница 67: ...iently To operate your boiler efficiently using less gas turn the central heating temperature knob A to the position or lower In winter periods it may be necessary to turn the knob towards the MAX pos...

Страница 68: ...eer Preventative solutions During cold weather set the central heating temperature knob A to maximum Must return to original setting once cold spell is over Place the heating on continuous and turn th...

Страница 69: ...rammer are as you require and adjust if necessary Check the programmer external to the boiler is in an ON position and the hot water cylinder thermostat is turned up NO See boiler Operation Modes and...

Страница 70: ...central heating but the appliance has reached the desired temperature set on the boiler The boiler is operating in central heating hot water mode The boiler is operating in frost protection 7 NORMAL...

Страница 71: ...the meter and or pre payment meter has credit If the boiler fails to operate then please contact Hunt Heating if under warranty or alternatively a Licensed Registered Engineer if outside of the warra...

Страница 72: ......

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