2813 182x257 External 30/11/05 14:08 Page 1 Installation Guide, Operation and Maintenance Manual External FASTTflo CONTINUOUS FLOW WALL HUNG BALANCED FLUE HEATERS FOR NATURAL GAS AND LPG WHX42 WHX56 LWHX42 LWHX56 THIS MANUAL MUST BE KEPT WITH THE APPLIANCE November 2005 Part No.
12813 182x257 External 30/11/05 14:08 Page 2 Copyright Andrews Water Heaters 2005 Reproduction of any information in this publication by any method is not permitted unless prior written approval has been obtained from Andrews Water Heaters. Andrews Storage Water Heaters have been designed and manufactured to comply with current International standards of safety.
12813 182x257 External 30/11/05 14:08 Page 3 CONTENTS PAGE 1) Included Accessories 2 2) Optional Accessories 2 3) Quick Connect Multi System Installation 3 4) Before Installation 4 5) Choosing Installation Site 5 6) Installation Clearances 6 7) Installation 7 8) Gas Piping 8 9) Water Piping 9 10) Electrical Wiring 10-11 11) Commissioning 12-13 12) Dimensions 14-15 13) Optional Accessories Guide 16 14) Servicing 17 15) Disassembly of each part 17-23 16) Ser
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Installation Manual GAS WATER HEATER WHX42, LWHX42 WHX56, LWHX56 (External) (External) WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. Potential dangers from accidents during installation and use are divided into the following three categories. Closely observe these warnings, they are critical to your safety.
1. Included Accessories Part Shape Q’ty Part Owner's Guide 1 Installation Manual (this document) Tapping Screw 5 2. Optional Accessories Part Remote Controller 2 The following accessories are included with the unit. Check for any missing items before starting installation. Shape Shape Q’ty 1 The accessories listed below are not included with the units, but may be necessary for installation.
3. Quick Connect Multi System Installation • The Quick Connect Multi System allows the installation of two units together utilizing only the Quick Connect Cord. The Quick Connect Cord is 2m. long. Install the two units 470mm-950mm apart at the center to ensure the cord will be able to reach between the units. (See Typical Plumbing diagram).
4. Before Installation Caution Check the Gas • Check that the rating plate indicates the correct type of gas. Check that the gas supply line is sized for 62.3 kW for this unit. Check the Power • The power supply required is 230V AC, at 50Hz. Using the incorrect voltage may result in fire or electric shock. Do Not Use Equipment for Purposes Other Than Those Specified • Do not use for purposes other than increasing the temperature of the water supply, as unexpected accidents may occur as a result.
5. Choosing Installation Site * Locate the appliance in an area where leakage from the unit or connections will not result in damage to the area adjacent to the appliance or to the lower floors of the structure. When such locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance. The pan must not restrict combustion air flow. Caution • The water heater is designed for external installation only. Never install it indoors or in a bathroom.
6. Installation Clearances Caution Before installing, check for the following: Install in accordance with relevant building and mechanical codes, as well as any local, state or national regulations. Check Illustration • Maintain the following clearances from both combustible and non-combustible materials.
7. Installation Securing to the wall • The weight of the device will be applied to the wall. If the strength of the wall is not sufficient, 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.
8. Gas Piping Follow the instructions from the gas supplier. The appliance and its individual shutoff valve must be disconnected 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.
9. Water Piping Ask a qualified plumber to perform the installation of the plumbing. Observe all applicable codes. This appliance is suitable for potable water. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to inspect the appliance and replace any part of the control system and gas control which has been under water.
10. Electrical Wiring Consult a qualified electrician for the electrical work. Do not connect electrical power to the unit until all electrical wiring has been completed. i) "A means of disconnection from the supply mains having a contact separation in all poles must be provided to allow for full disconnection". ii) Under voltage Cat III conditions should be incorporated in the fixed wiring in accordance with the wiring regulations.
Remote Controller • Applicable Model WHX42, WHX56, LWHX42, LWHX56 Remote controller Main RC-7508M * Up to three remote controllers can be connected. Additional remote controllers cannot be connected by themselves. • The remote controller must be installed in accordance with the installation manual enclosed in the package. • Cannot be used without a remote controller. Connecting Remote Controller Cord to Unit • • • • Keep the remote controller cord away from the freeze prevention heaters in the unit.
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 leaving the installation NOTE: The appliance has been factory set and no adjustment is necessary. • Preparation ... (1) Ensure all lines are purged / flushed of debris prior to connection to appliance. (2) Open the shut off valve on the water supply, check that water passes through the valve and close the valve.
Lighting Instructions This water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner. 1. Read the safety information in the installation manual or on the front of the water heater. 2. Turn off all electrical power to the unit. 3. Do not attempt to light the burner by hand. 4. Turn the gas control manual valve (external to the unit) clockwise to the off position. 5. Wait five minutes to clear out any gas.
12. Dimensions (unit: mm) WHX42, WHX56, LWHX42, LWHX56 (VIEW FROM TOP) 361 GAS INLET (3/4) 244 60 169 87 140 70 50 450 HOT WATER OUTLET (3/4) COLD WATER INLET (3/4) WIRING THROUGHWAYS 170 464 140 100 70 36 10 240 450 6 257 60 23 39.7 FLUE COLLAR 665.
Wiring Diagram (WHX42, WHX56, LWHX42, LWHX56) BR BR W 1 2 3 (UN-USED) AIRFLOW CHANGE -OVER CONNECTOR R W O 1 2 3 4 5 6 7 BL 3 2 1 INLET WATER THERMISTOR W 3 W 2 W 1 W HEAT EXCHANGER THERMISTOR W W 4 W 3 2 W 1 W W W 2 W W 1 W 2 1 BK W MAIN WATER FLOW CONTROL VALVE SM (VCC) LS (VCC) (Fully open) (GND) 1 2 3 4 5 6 BL BL 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 MAIN CIRCUIT BOARD 2 1 4 3 6 5 8 7 10 9 12 11 14 13 16 15 18 17 20 19 22 21 24 23 26 25 28 2
For Installers: 13. Optional Accessories Guide Read this installation guide carefully before carrying out installation. Remote Controller Installation Manual Model Number: RC-7508M Note Do not connect power to the water heater before the remote controller has been properly installed.
14. Servicing Important Notes To ensure the continued efficient and safe operation of the boiler it is recommended that it is checked and serviced at regular intervals. The frequency of servicing will depend upon the particular installation and usage, but in general once a year should be enough. It is the Law that any servicing is carried out by a competent person.
(2) Remove the 2 locking screws of the transformer, then pull out. 2. Removing the electric board (1) Remove the locking screws at the top and bottom 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 fasten terminal of the gas electromagnetic valve, then remove the 4 manifold locking screws. (3) Pull up and remove the manifold. 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.
(2) Pull out the fan motor. 5. Removing the gas electromagnetic valve block • Remove the electric board and manifold in advance. (1) Remove the gas electromagnetic valve locking screw. (2) Pull up the gas electromagnetic valve to the upper section and remove it.
6. Removing the mixing tube block • Remove the electric board and connectors 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. For Quick-discharge type Remove the intake water pipe locking screw and 2 locking fasteners of the non-return valve, then remove the intake water pipe and pull out the pump discharge pipe.
(4) Pull up the mixing tube block to the upper section and remove it. 7. Removing the heat exchanger • Remove 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.
16. Servicing parts lists External outfitting WHX42AD,WHX56AD 010 072 070 011 008 007 009 012 025 001 073 003 070 050 071 002 023 040 039 003 027 022 070 070 005 004 021 730 23 WHX42AD,56AD印刷 Page 23 05.6.16, 7:27 PM Adobe PageMaker 6.
External outfitting WHX42AD,WHX56AD Part Nos. Part Names Order Nos.
Combustion unit and gas route WHX42AD,WHX56AD 100 109 102 101 105 110 117 103 126 116 131 070 104 072 117 070 132 070 118 129 173 128 073 171 172 170 111 112 114 119 125 115 070 070 173 175 122 175 121 121 120 123 172 171 124 127 172 075 25 WHX42AD,56AD印刷 Page 25 05.6.16, 7:27 PM Adobe PageMaker 6.
Combustion unit and gas route WHX42AD,WHX56AD Part Nos. Order Nos.
Hot-water feed route WHX42AD,WHX56AD 412 425 456 424 413 402 A 434 428 401 508 507 427 421 D 433 456 412 434 423 468 406 B 413 484 510 402 483 407 400 470 417 402 402 C 173 471 408 412 472 406 435 452 414 409 471 172 413 456 410 511 418 412 509 434 413 441 411 075 511 422 A 456 413 508 435 412 458 434 444 442 507 B 420 073 463 428 454 D 453 172 431 434 468 456 437 434 172 445 434 446 440 455 439 456 C 443 418 509 447 438 172 509
Hot-water feed route WHX42AD,WHX56AD (Thermal fuse rounding procedure) (Left side view) (Front side view) (Right side view) (Rear side view) Freeze preventive heater 1.Beginning of roll Thermal fuse fastener Heat exchanger SET Thermal fuse Thermal fuse fastener 28 WHX42AD,56AD印刷 Page 28 05.6.16, 7:27 PM Adobe PageMaker 6.
Hot-water feed route WHX42AD,WHX56AD Part Nos. Part Names Order Nos.
Electronic control unit WHX42AD,WHX56AD 705 701 F G 700 H 073 703 732 070 714 710 715 070 717 711 722 H 070 712 070 070 730 731 721 733 073 721 713 G F 30 WHX42AD,56AD印刷 Page 30 05.6.16, 7:27 PM Adobe PageMaker 6.
Electronic control unit WHX42AD,WHX56AD Part Nos. Part Names Order Nos.
Remote controller and Attached set WHX42AD,WHX56AD Remote controller kitchen remote controller (RC-7508M) 751 787 788 786 752 Attached set 803 Special part Special part no. Owner's Guide 888 installation manual 889 32 WHX42AD,56AD印刷 Page 32 05.6.16, 7:27 PM Adobe PageMaker 6.
Remote controller and Attached set WHX42AD,WHX56AD Part Nos. Part Names Order Nos. Q'ty/unit QPAJ013 QPAA013 1 1 751 752 RC-7508M Body AD(SE) QPA M Dressed frame body AD(SE) 786 787 788 Oar plug 6X25 Cross recessed flat-head screw M4X35 Cross recessed flat-head wood screw (All screw)4.
Specifications • Specifications may be changed without prior notice. • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature.
Specifications Specification Item Model Name Type WHX56 Installation Air Supply/Exhaust Ignition Minimum Pressure for Maximum flow Minimum Flow Rate Dimensions Weight Water Holding Capacity Connection Sizes Water Inlet Power Supply Materials Hot Water Outlet Gas Inlet Supply Consumption Casing Flue Collar Heat Exchanger LWHX56 External, Wall Hanging Power Vented Direct Ignition 2.0 bar 3.5 L/min. 61.5 cm(Height) x 46.4 cm(Width) x 24 cm(Depth) 30 kg 1.
12813 182x257 External 30/11/05 14:08 Page 5 Andrews Water Heaters Wednesbury One Black Country New Road Wednesbury West Midlands WS10 7NZ Tel: +44 (0)121 506 7400 Fax: +44 (0)121 506 7401 Email: andrews@andrews-waterheaters.co.uk Website: www.andrewswaterheaters.co.
