andrews LWHX42 Installation Manual, Operation And Maintenance Manual Download Page 1

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Installation Guide, Operation and Maintenance Manual

This manual must be kept with the appliance

October 2010

Part No E799

Continuous Flow Wall Hung Balanced Flue
Water Heaters for Natural Gas and LPG

WHX56, LWHX56

Summary of Contents for LWHX42

Page 1: ...re FASTflo external Installation Guide Operation and Maintenance Manual This manual must be kept with the appliance October 2010 Part No E799 Continuous Flow Wall Hung Balanced Flue Water Heaters for Natural Gas and LPG WHX56 LWHX56 ...

Page 2: ...ety Regulations 1993 All installation and service on Andrews Water Heaters must be carried out by properly qualified personnel and therefore no liability can be accepted for any damage or malfunction caused as a result of intervention by unauthorised personnel Andrews Water Heaters policy is one of continuous product improvement and therefore the information in this manual whilst completely up to ...

Page 3: ...CTION 5 CHOOSING INSTALLATION SITE 10 SECTION 6 INSTALLATION CLEARANCES 11 SECTION 7 INSTALLATION 12 SECTION 8 GAS PIPING 13 SECTION 9 WATER PIPING 14 SECTION 10 ELECTRICAL WIRING 15 SECTION 11 COMMISSIONING 17 SECTION 12 DIMENSIONS 19 WIRING DIAGRAM 20 SECTION 13 REMOTE CONTROLLER INSTALLATION 21 SECTION 14 SERVICING 22 SECTION 15 DISASSEMBLY 22 SECTION 16 SERVICING PARTS LIST 32 SPECIFICATIONS 3...

Page 4: ...premises BS 6644 Installation of gas fired water boilers of rated inputs between 60kW and 2mW BS 7206 1990 Specification for unvented hot water storage units and packages I M2 Purging procedures for non domestic gas installations I M5 Soundness testing procedures for industrial and commercial gas installations I M11 Flues for commercial and industrial gas fired boilers and air heaters I M16 Notes ...

Page 5: ...em was rendered free from viable recoverable legionella It was found that at 61 C following a challenge of approximately 107 organisms per litre within one hour more than 99 999 of organisms had been killed After a subsequent stagnation period sampling did not reveal any residual contamination The design of the base of the water heater precludes legionella colonisation even after build up of debri...

Page 6: ...ATER WHX56 LWHX56 External Warning Caution Danger Danger of serious injury or even death as well as danger of fire when the product is misused by ignoring this symbol Possibility of serious injury or even death as well as possibility of fire when the product is misused by ignoring this symbol Possibility of bodily injury or damage to property when the product is misused by ignoring this symbol The...

Page 7: ...ape Q ty 1 Included Accessories The following accessories are included with the unit Check for any missing items before starting installation Q ty Shape Part Tapping Screw 1 Part Shape Q ty 5 Installation Manual this document 1 Owner s Guide Part Shape Q ty Quick Connect Cord 1 1 Remote Controller One remote controller per controller per application is required ...

Page 8: ...sulate the hot water piping to prevent heat loss Insulate and apply heating materials to the cold water supply piping to prevent heat loss and freezing of pipes when exposed to excessively cold temperatures G Quick Connect Cord Remote Controller Cord Gas Supply Piping Cold Water Supply Hot Water Remote Controller Terminal Block Cord Connector Cord Connector Leave enough clearance around the plumbi...

Page 9: ...as unexpected accidents may occur as a result Check Water Supply Quality If the water supply is hard acidic or otherwise impure treat the water with approved methods in order to ensure full warranty coverage Use Extreme Caution if Using With A Solar Pre Heater Using this unit with a solar pre heater can lead to unpredictable output temperatures and possibly scalding If absolutely necessary use mix...

Page 10: ...ls or material not resistant to heat Also consider the surro unding trees and animals The heat and moisture from the water heater may cause discolo ration of walls and resinous materials or corrosion of aluminum materials Avoid installation in places where dust or debris will accumulate Dust may block the air supply opening causing the performance of the fan motor to drop and incomplete combustion...

Page 11: ...learance of 600mm or more in front of the exhaust outlet Check Illustration Caution Clearances to Opening into Any Building Combustibles 300 mm or more Combustibles Combustibles Combustibles Combustibles 150 mm or more 150 mm or more 600 mm or more 10 mm or more There must be no building opening within this area 150 mm or more 150 mm or more 150 mm or more 300 mm or more Before installing check fo...

Page 12: ...f the wall is not suffi cient reinforcement must be done to prevent the transfer of vibration Do not drop or apply unnecessary force to the device when installing Internal parts may be damaged and may become highly dangerous Install the unit on a vertical wall and ensure that it is level Locating Screw Holes Locating Screw Holes Mounting Structure Caution When installing with bare hands take cauti...

Page 13: ...ted from the gas supply piping system during any pressure testing of that system at test pressures in excess of 35 mbar The Appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 35 mbar The appliance and its gas connections must be leak tested be...

Page 14: ...e piping simple Avoid piping in which an air holdup can occur Use approved piping materials If installing the unit on a roof If the unit is installed on a roof to supply water to the levels below make sure that the water pressure supplied to the unit does not drop below 2000 mbar It may be necessary to install a pump system to ensure that the water pressure is maintained at this level Check the pr...

Page 15: ...or full disconnection ii Under voltage Cat III conditions should be incorporated in the fixed wiring in accordance with the wiring regulations iii If the supply cord is damaged it must be replaced by the manufacturer or its service agent This appliance must be electrically grounded in accordance with Electrical Authority Regulations External wiring must be correctly earthed polarised and in accord...

Page 16: ... the redundant cord outside the water heater Do not put the extra length inside the equipment The remote controller cord can be extended up to 100m with Remote controller cord Use a Y type terminal with a resin sleeve Without the sleeve the copper wire may corrode and cause problems Be sure to hand tighten when screwing to the terminal block Power tools may cause damage to the terminal block Clamp...

Page 17: ...cedure 8 Check the gas pressure at gas pressure checking point Refer to Specification on page 2 If the water heater does not operate normally refer to Troubleshooting in the Operation Manual After the trial operation clean the filter in the cold water inlet 11 Commissioning The installer should test operate the unit explain to the customer how to use the unit and give the owner this manual before ...

Page 18: ...ear out any gas If the smell of gas remains stop and follow the instructions on page 4 of this manual 6 Turn the gas control manual valve counterclockwise to the on position 7 Turn on electric power to the unit 8 The unit will now operate whenever hot water is called for If the unit will not operate follow the shutdown instructions and call a service technician Shutdown Instructions 1 Stop any wat...

Page 19: ...LET GAS INLET COLD WATER INLET WIRING THROUGHWAYS WATER DRAIN VALVES 39 7 665 2 361 70 450 23 45 257 60 450 464 87 170 140 100 70 36 70 170 140 100 36 AIR INLET BOTTOM OF CASE BOTTOM OF CASE FLUE COLLAR HOT WATER OUTLET 3 4 WIRING THROUGHWAYS COLD WATER INLET 3 4 GAS INLET 3 4 VIEW FROM TOP 10 6 240 44 51 55 615 10 169 140 60 50 244 UPPER WALL MOUNT BRACKETS ...

Page 20: ...W W W W V BK W BK BK V W BL R O Y BK V BL Y O R V BK G G BK W VCC SM LS SM LS GND VCC Fully open HEAT EXCHANGER THERMISTOR OUTLET WATER THERMISTOR MAIN WATER FLOW CONTROL VALVE OPERATING LED R Y G O BL BL R O G Y BL BL BL R BL VCC GND Fully open BL BL BL BL REMOTE CONTROLLER THERMAL FUSE BYPASS WATER FLOW CONTROL VALVE VCC W W INLET WATER THERMISTOR RELAY 9 RELAY 1 RELAY 5 RELAY 2 RELAY 4 RELAY 10...

Page 21: ...r 2 Position the holes diameter 6 mm X depth 25 30 mm to secure the remote controller for the kitchen and knock in all the wall anchors Next secure it using oval headed wood screws 3 Replace the decorative cover Oval headed wood screws The screws must be tightened manually and the remote controller secured properly without rattling Main remote controller body 13 Remote Controller Installation Manu...

Page 22: ...aters Before commencing with a service or replacement of parts the boiler should be isolated from the electrical supply and water supply and the gas supply should be turned off at the gas service cock All routine servicing requirements can be achieved by the removal of the front panel only Remove the four screws on the front panel and lift off For access inside the appliances screwdriver can be us...

Page 23: ...and ground screw then pull board out 3 Removing the manifold Remove the electric board and fixing plate of the ground fault circuit interrupter in advance 1 Remove the locking screw of the gas electromagnetic valve and the manifold pipe 2 Remove the 2 locking screws of the transformer then pull out ...

Page 24: ...locking screws 4 Removing the hot water supply fan Remove the electric board manifold and intake gas pipe in advance 1 Remove the 3 fan locking screws then pull out 3 Pull up and remove the manifold DISASSEMBLY 24 ...

Page 25: ...as electromagnetic valve block Remove the electric board and manifold in advance 1 Remove the gas electromagnetic valve locking screw 2 Pull out the fan motor 2 Pull up the gas electromagnetic valve to the upper section and remove it ...

Page 26: ...s in advance 1 Remove the locking screw of the intake water pipe and the locking quick fastener of water flow sensor set 3 of the heat exchanger then pull out the intake water pipe 2 Remove the quick fastener of the water flow sensor set 1 and the discharge hot water pipe locking screw 3 Remove the connecting quick fasteners of the water flow sensor set 3 adjustment valve and the water flow servo ...

Page 27: ...ove the electric board manifold mixing tube block and connectors in advance 1 Remove the 3 locking screws at the bottom of the burner case 2 Remove the 2 case top plate locking screws 4 Pull up the mixing tube block to the upper section and remove it ...

Page 28: ...External outfitting LWHX56AD 001 003 002 003 023 071 021 004 009 007 008 011 070 010 012 073 025 039 022 027 072 070 040 070 730 070 050 005 16 Servicing parts lists SERVICING PARTS LIST 28 ...

Page 29: ...1 2 6 0 K E L E E L E D A W l e b a l n o i t u a C 2 2 0 1 2 0 0 K U R C U R C t e e h s n o i t a l u s n i g u l P 3 2 0 1 6 0 0 A E L E E L E D A W e s a C 5 2 0 1 9 0 0 5 5 3 7 1 C g n i h s u b d r o C 7 2 0 1 3 6 0 K E L E E L E D A l e b a l m a r g a i d n o i t c e n n o C 9 3 0 1 4 0 0 K B U B B U B e t a l p l a e s t h g i t n i a R 0 4 0 1 0 1 0 J B M D B M D 2 d r o c g n i t c e n ...

Page 30: ...ute WHX56AD 100 109 126 173 170 070 119 125 070 173 122 123 121 120 172 172 075 124 171 121 110 116 117 117 118 171 172 175 175 112 111 115 114 127 070 073 070 132 131 129 128 072 103 104 101 102 105 070 SERVICING PARTS LIST 30 ...

Page 31: ...o f i n a M 8 1 1 1 0 3 0 F B X C B X C Q r e t o m n a F 9 1 1 1 5 1 0 E N H D N H D e p i p d l o f i n a M 0 2 1 121 O ring P25 5 SAB1512 2 1 8 0 7 7 Q A S V T E S P R C Q D 4 2 S h c e m s a G 2 2 1 1 9 0 1 0 9 5 8 A 8 2 0 2 O S A J g n i r O 3 2 1 1 1 0 0 E E L E E L E T E S A 0 2 g n i t t i f s a G 4 2 1 1 1 0 0 C T L D T L D e s a c r e n r u b r o f e t a l p g n i t n u o M 5 2 1 1 2 5 0...

Page 32: ...2 420 172 455 443 445 509 418 434 456 456 434 431 468 468 456 412 417 456 B B 438 439 440 434 172 509 418 075 446 472 471 434 456 A A C C D D 435 412 463 507 508 413 458 423 412 510 402 413 418 172 509 442 441 075 414 454 428 456 434 400 412 511 413 435 421 422 434 437 444 447 452 412 425 413 508 427 507 SERVICING PARTS LIST 32 ...

Page 33: ...te WHX56AD Thermal fuse Heat exchanger SET Thermal fuse fastener Rear side view w e i v e d i s t h g i R w e i v e d i s t f e L Front side view Thermal fuse rounding procedure Freeze preventive heater 1 Beginning of roll Thermal fuse fastener ...

Page 34: ...E B G E S U S r e t l i f r e t a W 8 3 4 1 8 0 0 L Q R B Q R B F D 6 1 g n i r O 9 3 4 1 6 0 0 D J T D J T D r e v o c r e t l i f r e t a W 0 4 4 1 3 0 0 D U R C U R C k c o c n i a r D 1 4 4 1 3 3 6 6 D A S 3 P g n i r O t n a t s i s e r r e t a w t o H 2 4 4 1 7 0 0 D C A E C A E g n i l p u o c g n i x i M 3 4 4 1 3 1 0 D C A E C A E y d o b g n i x i M 4 4 4 1 5 3 0 D C W B C W B r e d n i ...

Page 35: ...SERVICING PARTS LIST 35 Electronic control unit WHX56AD 703 705 700 073 710 732 070 070 714 715 717 722 070 073 721 721 733 730 731 713 711 070 070 F G H 701 H F G 712 ...

Page 36: ... J E L E E L E d r o c y l p p u s r e w o P 3 1 7 1 9 0 9 7 8 2 7 N 4 K N N 4 P H p m a l c n o l y N 4 1 7 1 2 0 7 4 6 1 5 N 6 K N N 6 P H p m a l c n o l y N 5 1 7 1 8 2 0 J P C C P C C 2 0 9 t i u d n o C 7 1 7 4 6 5 6 C A S 6 X 5 3 M w e r c s e n i h c a m d n i b d e s s e c e r s s o r C 1 2 7 1 0 8 7 4 3 6 2 1 X 4 w e r c s g n i p p a t N d a e h d n u o r d e s s e c e r s s o r C 2 2 7...

Page 37: ...IST 37 Attached set Remote controller and Attached set WHX56AD 803 751 752 786 788 787 Special part Special part no Special part Owner s Guide 888 installation manual 889 Optional Accessories Remote controller RC 7508M ...

Page 38: ... 0 2 X 1 4 w e r c s l l A w e r c s d o o w d a e h t a l f d e s s e c e r s s o r C 8 8 7 1 4 6 2 7 A K S V t e s g n i k c a p D A 2 Z W 1 1 2 3 Q G 0 0 8 8 0 2 6 C A S 5 3 X 5 w e r c s g n i p p a t 1 e p y t d a e h d n u o r d e s s e c e r s s o r C 3 0 8 1 7 2 2 8 R A S D A 2 Z W 1 1 2 3 Q G e d i u G s r e n w O 8 8 8 1 5 8 2 8 R A S D A 2 Z W 1 1 2 3 Q G l a u n a M n o i t a l l a t s...

Page 39: ...heeting Copper Tubing Flame Rod Thermal Fuse Pressure Relief Valve Lightning Protection Device ZNR Electric Leakage Prevention Device Overheat Prevention Device Freezing Prevention Device Fan Rotation Detector Remote Controller Anchoring Screws Specifications Performance Item Model Name Type Ignition Minimum Pressure for Maximum flow Minimum Flow Rate Dimensions Weight Water Holding Capacity Acces...

Page 40: ...Baxi Commercial Division Wood Lane Erdington Birmingham B24 9QP Email andrews baxigroup com www andrewswaterheaters co uk Sales 0845 070 1056 Technical 0845 070 1057 ...

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