Laars U.H.E Installation And Operation Instructions Manual Download Page 48

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NOTES

800.900.9276 • Fax 800.559.1583

(Customer Service, Service Advisors)

20 Industrial Way, Rochester, NH 03867

•

603.335.6300 • Fax 603.335.3355

1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8

•

905.238.0100

•

Fax 905.366.0130

www.Laars.com

Litho in U.S.A. © Laars Heating Systems 080

Document

11036

Summary of Contents for U.H.E

Page 1: ...instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or gas supplier WARNING If the informatio...

Page 2: ...xdale Blvd Etobicoke Ontario Canada M9W 1R3 This water heater must be installed in accordance with local codes In the absence of local codes it must be installed in compliance with the National Fuel G...

Page 3: ...re relief valve is installed into the proper location at the top of this water heater It is the responsibility of the installing contractor to see that all controls are correctly installed and are pro...

Page 4: ...his water heater This water heater meets or exceeds the ASHRAE IES 90 1b latest edition standards with respect to insulation and standby loss requirements Hydrogen gas can be produced in an operating...

Page 5: ...115 446 319 100 92 0 77 5 8 28 1 4 5 13 60 62 1 2 73 1 8 73 1 4 1 1 2 1 1 1 950 Recovery LPH At Degree Rise DIMENSIONS MILLIMETERS Storage Volume Capacity Gallons Input Rate KW 1st Hr Del LPH at 56 C...

Page 6: ...temperatures be used to avoid the risk of scalding Refer to the Warnings and the section on SCALDING in Section V Water Connections It is further recommended in all cases that the water temperature b...

Page 7: ...ied by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials as meeting the requirements of the Standard for Relief Valves and Au...

Page 8: ...e rating plate for anode replacement information POWERED ANODE SYSTEM 399 999 BTU HR MODELS ONLY Two powered anodes and one magnesium anode rod are used on models with input ratings of 399 999 Btu hr...

Page 9: ...smell Other conditions such as odorant fade can cause the odorant to diminish in intensity or fade and not be as readily detectable If you have a diminished sense of smell or are in any way unsure of...

Page 10: ...ate 1 LOCATE so that venting connections will be short and direct 2 THIS WATER HEATER IS SUITABLE FOR INSTALLATION ON COMBUSTIBLE FLOOR Do not install this water heater on carpeting 3 FOR BASEMENT INS...

Page 11: ...OVE WATER HEATER TO PERMANENT POSITION by sliding or walking Place drain pan underneath water heater INSTALL TEMPERATURE AND PRESSURE RELIEF VALVE if not already installed WARNING Temperature and pres...

Page 12: ...construction unconfined spaces may provide adequate air for combustion and ventilation 2 If the unconfined space is within a building of tight construction buildings using the following construction w...

Page 13: ...f asphyxiation as well as reducing the life of the water heater Spray can propellants cleaning solvents refrigerator and air conditioning refrigerants swimming pool chemicals calcium and sodium chlori...

Page 14: ...Figure 6 Typical Two Water Heater Connection Figure 7 Typical Three Water Heater Connection Figure 8 Typical Four Water Heater Connection 14...

Page 15: ...OT water outlet are identified on the water heater Make the proper plumbing connections between the water heater and the plumbing system to the house Install a shut off valve in the cold water supply...

Page 16: ...ponent s previously used with a non potable water heating appliance All piping components connected to this water heater for space heating applications must be suitable for use with potable water WARN...

Page 17: ...k checked with a soap solution upon initial start up of the water heater Any leaks must be repaired before continuing operation of the water heater Do not terminate the venting where noise from the ex...

Page 18: ...must not be located lower than the horizontal centerline of the air intake terminal if vented through the same wall A service drain loop must be installed in the drain tubing to serve as a condensate...

Page 19: ...cated above the terminal within a horizontal distance of 2 feet 61 cm from the center line of the terminal b b K Clearance to a mechanical air supply inlet 6 feet 1 83 m 3 feet 91 cm above if within 1...

Page 20: ...12 inches 30 cm a 12 inches 30 cm a K Clearance to a mechanical air supply inlet 6 feet 1 83 m 3 feet 91 cm above if within 10 feet horizontally E Clearance to unventilated soffit 12 inches 30 cm a 1...

Page 21: ...pipe and ABS fittings ASTM D 266 3311 for ABS pipe If CPVC or ABS pipe and fittings are used then the proper cement must be used for all joints including joining the pipe to the Termination PVC mater...

Page 22: ...eet of horizontal run of vent pipe length CAUTION Failure to properly support the vent piping with hangers and clamps may result in damage to the water heater or venting system Stress levels in the pi...

Page 23: ...ng With Low Ground Clearance When venting cannot exit through the wall at a height greater than or equal to 12 30 5 cm and above expected snow level from the ground then the installation must be modif...

Page 24: ...e Equivalent vent length for elbows 6 x 5 feet 30 feet Total equivalvent vent distance 65 feet 30 feet 95 feet total equivalent vent length This is below the maximum allowed distance of 100 feet for t...

Page 25: ...with an slight upward slope The vent system must be supported every 5 feet of vertical run and every 3 feet of horizontal run of vent pipe length CAUTION Failure to properly support the vent piping w...

Page 26: ...y increased by improper installation If rigid pipe clamps are used to hold the pipe in place or if the pipe cannot move freely through a wall penetration the pipe may be directly stressed or high ther...

Page 27: ...ANSI Z223 1 Latest Edition or CGA CAN B149 Installation Code Figure 17 Typical Vertical Power Vent System Installation Through The Wall Venting With Low Ground Clearance When venting cannot exit throu...

Page 28: ...n feet required 2 Add 5 feet of venting for every 90 elbow 3 Add 2 feet of venting for every 45 elbow 4 Total vent length cannot exceed Max Vent Length in Table 4 Example of Total Vent Length for 100...

Page 29: ...E EXHAUST TERMINAL SEPARATION DISTANCES Note When installing multiple intake exhaust terminals on the same wall of a building the nearest intake terminal must be at least 5 feet from the nearest exhau...

Page 30: ...sition Electrical shock can cause personal injury or death DO NOT operate this water heater with the rain cap removed or recirculation of combustion products may occur Water may also collect inside la...

Page 31: ...may be replaced by using the same diameter pipe DO NOT extend the overall dimension by more than 60 inches See Fig 19 Figure 22 Concentric Vent Roof Top Attachment 7 Install rain cap and small diamete...

Page 32: ...low insulation or other materials to accumulate inside pipe assembly when installing through the hole 6 Install rain cap and small diameter pipe assembly in concentric Y fitting and large pipe assembl...

Page 33: ...EA SECTION VII GAS CONNECTIONS WARNING Connect this water heater only to the type of gas as shown on the rating plate Use clean black iron pipe or equivalent material approved by local codes and ordin...

Page 34: ...GAS METER SIZE NATURAL GASES ONLY Be sure that the gas meter has sufficient capacity to supply the full rated gas input of the water heater as well as the requirements of all other gas fired equipment...

Page 35: ...that is used to control lights or another appliance If wiring in conduit is required remove the line cord and strain relief bushing in the control panel and install an electrical conduit connector Con...

Page 36: ...ater until all corrective steps have been made by a factory authorized independent service contractor or qualified service professional 1 Flooding to or above the level of the burner or controls 2 Ext...

Page 37: ...ration at this setting to determine the correct temperature setting consistent with the requirements for the installation CAUTION This water heater when set at a lower temperature setting is not capab...

Page 38: ...ating Should overheating occur or the gas supply fails to shut off turn off the manual gas control valve to the appliance and call a qualified service agency If the water heater is to remain idle for...

Page 39: ...ommended maintenance Unit inspection and adjustment should be performed by a competent technician Suggested Maintenance Schedule COMPONENT OPERATION INTERVAL REQUIRED Tank Sediment Removal Monthly Flu...

Page 40: ...the more lime deposits are dropped out of the water This is the lime scale which forms in pipes water heaters and on cooking utensils Lime accumulation not only reduces the life of the equipment but a...

Page 41: ...uipped with a powered anode system The powered anode system provides corrosion protection to the tank by supplying a low voltage current to the titanium anode rods and then periodically comparing this...

Page 42: ...ith extremely hot water passing out the valve during this checking operation If the temperature and pressure relief valve on the water heater discharges periodically or continuously it may be due to t...

Page 43: ...e closed 24 volts from pressure switch harness to ground Is there voltage to the Hot Surface Ignitor Check for 120VAC to the ignitor from the ignition module when the ignition LED is lit If no voltage...

Page 44: ...elief Valve 15 Exhaust Pipe PVC w Barb Tap 16 Condensate Trap Elbow 17 Silicone hose 18 Outer Door Service Panel Specify Model 19 Vent Pipe Support Bracket except 399 20 NSF Escutcheon 21 Exhaust Pres...

Page 45: ...number when ordering service parts 1 Combustion Surround Ass y AA Keeper Latch Catch BB Screw 8 32 x 1 2 RHCR CC Ignition Control Ass y DD Jacket Head 28 1 4 Grey EE Switch Main Power FF Potentiometer...

Page 46: ...PT or x 1 for 399 25A Burner Mounting Gasket 12A Nipple 3 4 NPT x 6 or 1 NPT for 399 26A Burner Mounting Insert 13A 2 dia Flex Reducer or PVC reducer for 399 14A Inlet PVC CC Ignition Control Ass y 1C...

Page 47: ...NOTES 47...

Page 48: ...r Service Service Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars com Litho in U...

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