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American Hometec AHG-T42-LP, Installation And Operation Manual

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American Hometec AHG-T42-LP Installation And Operation Manual Download Page 46

    

Page 46 

 

 
SPARE PARTS 

 

(NEED TO COMPLETELY REVIEW PARTS LIST)  The following spare parts are available for purchase 
and maybe replaced by a licensed professional. Please contact American Hometec, Inc.’s toll free 
support line at 1-800-295-8039. 

 

Part 

Part Number 

Control panel

 

AHG42CP

 

Wall mounting kit  (bracket and screws)

 

AHG42WM

 

Controller (PCB )

 

AHG42PCB

 

Temperature sensor

 

AHG42TS

 

Water Flow switch

 

AHG42FS1

 

Transformer

 

AHG42TFM

 

Heat exchanger assembly 

AHG42HEA 

Exhaust Duct 

AHG42ED 

Fume collecting hood 

AHG42FCH 

Thermostat 

AHG42T2 

Combustion chamber assembly 

AHG42CCA 

Combustion fan 

AHG42CF 

Igniter 

AHG42IG 

Outlet water valve 

AHG42OWV 

Pressure relief valve 

AHG42PRV 

Air duct  

AHG42AD 

Heat shield  

AHG42HS 

Thermal fuse 

AHG42TF 

Flame Rod 

AHG42FR 

Manifold assembly 

AHG42MS 

 Wind pressure switch 

AHG42WPS 

 Proportional valve  

AHG42PV 

Power cord 

AHG42PC 

Inlet water valve 

AHG42IWV 

 

 

Summary of Contents for AHG-T42-LP

Page 1: ...cinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas s...

Page 2: ...HOOTING 19 DIAGNOSTIC CODES 22 INSTALLATION INSTALLATION GUIDELINES 25 PACKING LIST 26 LOCATION AND CLEARANCE REQUIREMENTS 27 TYPICAL INSTALLATION 27 MOUNTING 28 ELECTRICAL 29 GAS PIPING 32 WATER PIPI...

Page 3: ...duct maintenance requirements and the details of your product warranty IMPORTANTSAFETYINSTRUCTIONS READ AND FOLLOW ALL INSTRUCTIONS When using this equipment basic precautions should always be followe...

Page 4: ...F 52o C can cause severe burns or death from scalds Households with small children disabled or elderly persons may require a setting of 120o F 49o C or lower This heater is designed only for the heati...

Page 5: ...basis to ensure optimum performance Service needs will vary based on local water conditions including acidity alkalinity hardness etc Freezing temperatures will cause damage to the heater Install in...

Page 6: ...l and then exhausted externally o The unit s integrated control system constantly monitors the temperature of the water being produced and adjusts the burner accordingly to deliver a stable supply of...

Page 7: ...to confirm water flow and then close the faucet 5 Open the fuel gas valve 6 Plug in the unit 7 Press the ON OFF key to turn on the unit The message CL will be displayed indicating Cold state 8 Set te...

Page 8: ...ter flow rate needs to be adjusted so the unit is operating within its capacity range This will allow the desired temperature to be reached o C L Indicates metric units are being displayed degrees Cel...

Page 9: ...econds before the display switches to show actual water temperature 7 Along the left side of the temperature display a series of bars indicates the level of the temperature set point At each 5 o C 9o...

Page 10: ...set point Example 2 Metric unit mode The digit 25 is displayed This indicates a set point of 250 liters Pressing the UP key once changes the display to 30 indicating a water quantity of 30x10 300 lite...

Page 11: ...If the water heater needs to be stopped when it is operating press the OFF ON key The displayed hot water temperature disappears The water heater has stopped operating The Combustion indicating light...

Page 12: ...units operation panel The first press will shut the unit off which will invalidate the Override ownership of the remote and the second press will reactivate the unit which will reinstall factory defa...

Page 13: ...eir factory default values The heater and water within the unit may be very hot Allow time for the system to cool and use caution when draining to minimize risk of injury 1 Shut down the water heater...

Page 14: ...Note Freezing temperatures below 32o F 0o C can cause permanent damage to the heater and or the piping system 9 Reinstall the drain plugs and close the hot water faucets 10 To return a unit to operat...

Page 15: ...as valve 2 Turn off the power by pressing the ON OFF button CL will be displayed when off 3 Open the hot water faucet at one or more points of use sink upstairs bathtub etc Maintain a constant trickle...

Page 16: ...ny flammable materials in the vicinity of the water heater or exhaust piping Any unusual noises coming from the heater while in operation Are the air intake and exhaust free from any blockage or forei...

Page 17: ...supply system Contact the water supplier or local plumbing inspector on how to correct this situation Do not plug the relief valve LIME SCALE CLEANING PROCEDURE Materials required o Five gallon contai...

Page 18: ...lve V1 and Open Valve V3 this places the house back online 12 Disconnect all hoses 13 It is also wise to clean the water inlet screen at this time Close Valve V3 and V4 to do so Clean the water inlet...

Page 19: ...properly plugged Plug the power plug properly There is no hot water flow when a hot water faucet is opened No empty fuel source Water valve closed Power outage Flow is too low or became too low less...

Page 20: ...s the heat generated by the burner while operating at minimum capacity can make the water hotter than desired Increase the hot water user flow so that the burner system can control the temperature Hot...

Page 21: ...The blower is designed to run for 30 seconds after burner shuts off None Normal operation The volume alarm does not sound even though the volume appears to be adequate Units incorrect during input Me...

Page 22: ...oken down 4 Wiring harness or wiring connection somewhere in fan connection has come loose 1 Check to see if fan turns freely Remove any foreign objects jamming the fan 2 Replace the blower fan 3 Repl...

Page 23: ...low 4 Check if the water pressure is normal Water pressure is too low causing flow to drop below required minimum flow Replace or repair igniter or flame detection system 5 Check the gas type if the g...

Page 24: ...oid valve is faulty 3 Controller has failed 1 Mount plug in wiring properly and replace bad elements 2 Replace solenoid valve 3 Repair or replace the controller E8 Exhaust system error 1 Wiring harnes...

Page 25: ...0 or the Canadian Electrical Code CSA C22 1 shall prevail Maximum inlet gas pressure must not exceed the value specified by the manufacturer and that the minimum value listed is for purposes of input...

Page 26: ...c s toll free support line 1 800 295 8039 Item Item Quantity Water Heater A 1 Installation and Operation Manual B 1 Expansion Bolts C 6 Seal Ring D 8 Self tapping Screw E 8 Expansion Anchors F 8 A Wat...

Page 27: ...earance as indicated below including ample clearance in front of unit for proper service access Installation is recommended to be at a height that will allow easy viewing and operation of the control...

Page 28: ...rientation will result in damage and will void warranty 1 Identify a suitable location per the Location and Clearance Guidelines Ensure that the heater will be attached in a manner that is sufficient...

Page 29: ...sure that a properly grounded 120 V 60 Hz three prong outlet is available DO NOT PLUG IN THE UNIT UNTIL INSTALLATION IS COMPLETE TESTED AND READY FOR INITIAL START UP WIRED REMOTE CONTROL Choose a loc...

Page 30: ...on Anchors supplied 10 Separate the panel cover from the remote base secure remote base to wall with provided screws 11 Replace front cover 12 Attach remote wires to the UNIT as follows 1 Remove the f...

Page 31: ...it s socket on PCB controller and connect them by using a screw driver 5 Assemble and Fasten the PCB controller and assemble the front cover of unit6 Connect the plug of cable to the socket of cable...

Page 32: ...threaded joints of the gas piping is compatible with LPG Propane 5 Use only approved materials to connect the unit to the gas line 6 Install a manual gas valve in the gas supply line to the water heat...

Page 33: ...lief valve must be installed near the hot water outlet and must comply with Standard for Relief Valves for Hot Water Supply Systems ANSI Z21 22 CSA 4 4 6 Purge the water line to remove debris and air...

Page 34: ...em Keep the vent pipe routing as short and straight as possible The water heater vent must not be combined with the vent from any other gas appliance or vent stack The water heater vent must not be co...

Page 35: ...are at least 24 600 mm from any obstruction or other objects The exhaust pipe must maintain adequate clearances and be insulated with a fireproof material if it passes through walls made of flammable...

Page 36: ...on air inlet to any other appliance 12 inches 300 mm 36 inches 910 mm K To a mechanical air supply inlet 3 feet 91 cm above if within 10 feet 3 m horizontally 6 feet 1 83 m L Above paved sidewalk or p...

Page 37: ...s one 90 degree elbow 2 Refer to below table to find the maximum vent length based on the number of elbows Example If you have one elbow then your maximum vent length is 35ft 10 7m Number of 900 elbow...

Page 38: ...Page 38...

Page 39: ...Heat Fab Saf T Vent 5490CI 5400CI NA NA Hart Cooley Model SW 4STWP 4SRC 4STM 4CHT 4C12 4CTAI 4STM 4CVT 4CF A B C 7SSC 4C36 4CRC Manufacturer Contact Information Manufacturer American Hometec Inc Z Fl...

Page 40: ...the gas supplier s instructions If you cannot reach your gas supplier call the fire department This appliance does not have a pilot A built in ignition device will automatically light the burner Do no...

Page 41: ...n the water supply valve to the unit Inspect for any leaks 9 Visually inspect air intake inlet and exhaust piping to ensure they are not obstructed 10 Plug in the unit CL is displayed indicated cold 1...

Page 42: ...Orange Brown Black Power Board F2 3A Main Board Blue Brown Gas Valve 6 Yellow GND Water outlet sensor Water inlet sensor Black Red 0 1 2 4 3 Red Induction Needle Black Yel low Ye ll ow Ignitor Ig nit...

Page 43: ...S en so r F 1 5 A W hi t e R e d B l ac k CN1 CN5 CN4 CN3 CN8 CN6 CN1 CN9 CN11 CN10 CN4 CN2 R ed R e d W hi t e W h it e B la ck B lu e B lu e B lu e Ye ll o w Bl ac k R ed Fan O ra n ge B la ck R ed...

Page 44: ...ane Gas 10 700 btu h 20 000 btu h Hot Water Delivery Capacity Max 4 2 GPM 45 rise 5 4 GPM 35 rise Noise level 70 dB A Thermal efficiency 0 82 NOXaf 40 ppm Max Minimum Operating Water Flow 0 66 GPM 2 5...

Page 45: ...Temperature sensor inlet Temperature sensor outlet Outlet water valve Thermostat Heat exchanger assembly Fume collecting hood Igniter power plug Inlet water valve Water Flow sensor Proportional valve...

Page 46: ...PCB AHG42PCB Temperature sensor AHG42TS Water Flow switch AHG42FS1 Transformer AHG42TFM Heat exchanger assembly AHG42HEA Exhaust Duct AHG42ED Fume collecting hood AHG42FCH Thermostat AHG42T2 Combustio...

Page 47: ...ate of manufacture plus ninety days Exclusion THISLIMITEDWARRANTYSHALLBETHEEXCLUSIVEWARRANTYMADEBYTHEMANUFACTURER ANDISMADEINLIEUOFALLOTHERWARRANTIES EXPRESSED ORIMPLIED WHETHER WRITTEN ORORAL INCLUDI...

Page 48: ...ain a Returned Materials Authorization RMA over the phone BEFORE RETURNING THE UNIT When contactingthecompanypleasehavetheunit sserialnumberandoriginalreceipt onhand toprovidepurchase date and other n...

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