Honeywell 51370B Manal Download Page 31 | Manualshive

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Wiring Diagram

Figure 9

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Summary of Contents for 51370B

Page 1: ... s phone Follow the gas supplier s 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 the gas supplier For your family s comfort safety and convenience we recommend this water heater be installed and serviced by a plumbing professional INSTALLATION AND OPERATING INSTRUCTION MANUAL FOR YOU...

Page 2: ...istant System In the event of improper usage or storage of gasoline or other flammable materials in the location where the water heater is installed the technology will resist ignition of the flammable vapors outside the confines of the water heater The Flammable Vapor Ignition Resistant System features Flammable Vapor Sensor Automatic Ignition Device Sight Window to observe operation of pilot and...

Page 3: ...ent pipe preparation and joining 25 Water Connections 26 Gas Connections 29 Electrical Connections 30 Wiring Diagram 31 GENERAL OPERATION 32 Lighting and Shutdown Instructions 33 Thermostat Adjustment 34 Burner Flame Check 35 MAINTENANCE 36 TROUBLESHOOTING 40 PARTS LIST AND PARTS LIST DRAWING 43 INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND SPACE HEATING 44 ...

Page 4: ...act a qualified service technician to inspect the appliance and to replace any part of the control system including the combination gas control which has been submerged in water See the Gas Connections section of this manual before servicing or replacing a water heater that has had any external part to the tank submerged in water CAUTION Incorrect operation of this appliance may create a hazard to...

Page 5: ...of local codes the water heater must be installed in compliance with the National Fuel Gas Code ANSI Z223 1 Latest Edition or in Canada CAN CGA B149 1 Natural Gas Installation Code Latest Edition or CAN CGA B149 2 Propane Installation Code Latest Edition The location of this water heater is of the utmost importance Before installing this water heater read the installation section of these instruct...

Page 6: ...TER HEATER To comply with NSF requirements this water heater is to be a Sealed to the floor with sealant in a smooth and easily cleanable way or b Installed with an optional leg kit that includes legs and or extensions that provide a minimum clearance of 6 beneath the water heater WARNING Liquefied petroleum gases propane gas are heavier than air and will remain at floor level if there is a leak B...

Page 7: ...r 4 inches 10 2 cm be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve This water heater MUST be installed indoors out of the wind and weather Note For California installation this water heater must be braced anchored or strapped to avoid falling or moving during an earthquake See instructions for correct installation p...

Page 8: ... three 3 inches 7 6 cm in any direction or if the appliance is to be installed in an alcove or closet the entire floor must be covered by the panel The minimum clearances to combustibles for this water heater are zero 0 inch 0 cm from the sides and rear five 5 inches 12 7 cm from the front of the jacket zero 0 inch 0 cm from the vent connector and fifteen 15 inches 38 1 cm from the jacket top Incr...

Page 9: ...inches 30 cm 12 inches 30 cm 1 In accordance with the current CAN CGA B149 Installation Codes 2 In accordance with the current ANSI Z223 1 Latest edition NFPA 54 National Fuel Gas Code A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings Permitted only if a veranda porch deck or balcony is fully open on...

Page 10: ...rminations Consult the concentric vent and or the air intake relief device instructions for installation requirements Clearance to combustibles for all venting pipes and terminals For installations in the US 0 minimum For installations in the CANADA 1 minimum DO NOT place of insulation or other materials in the required clearance spaces between the venting to combustible material unless otherwise ...

Page 11: ...d installer Failure to properly install the vent system may result in property damage personal injury or death NOTICE For installations in Canada field supplied vent piping must comply with CAN CGA B149 1 latest edition and be certified to the Standard For Type BH Class II 65 C Gas Venting Systems ULC S636 Components of this listed system shall not be interchanged with other vent systems or unlist...

Page 12: ...enting rated Class II 65 C ULC S636 approved Polypropylene for flue gas venting rated Class II 65 C Approved Primers and Cements For installations in the US only PVC and CPVC Primer ASTM F656 PVC Cement ASTM D 2564 CPVC Cement ASTM F493 ABS Primer and Cement ASTM D 2235 For installations in CANADA ULC S636 approved Primer and Cement for flue gas venting rated Class II 65 C NOTICE Use of cellular c...

Page 13: ...aust adapter with drain outlet mounts directly to the blower outlet and is secured with two hose clamps one to the blower and the other to the vent pipe Tubing is provided to drain any accumulated condensate away from the water heater and to a suitable drain The kit comes complete with instructions for proper installation PART I Venting Specifications for 75 Gallon 283 9L This water heater is a po...

Page 14: ...MPORTANT The minimum equivalent length for the exhaust portion of the vent is 7 feet The maximum equivalent vent length for the exhaust is 60 feet for 3 diameter pipe and 100 feet for 4 diameter pipe The intake portion of the vent must be equal to or less than the vent length of the exhaust The tables below are provided for your quick reference some installations may require a greater number of el...

Page 15: ...7 4 15 4 6 Through the Roof 3 85 25 9 15 4 6 Through the Roof 4 80 24 4 15 4 6 NOTE When using 4 10 2 cm vent pipe use two 4 10 1 cm to 3 7 6 cm reducers for each portion of the vent One reducer is installed just after the blower and the other reducer is used just prior to exiting the building Exit the building wall with 3 7 6 cm vent pipe using the 3 7 6 cm 90 vent terminal supplied Two 45 elbows...

Page 16: ...nnector The distance between the edges of the 90 vent terminal and the exterior wall see Figure 3 must be 1 in 2 5 cm The exhaust and intake must not be less than 16 40 6 cm apart and the exhaust terminal must be a minimum of 3 in higher than the intake terminal see figure 4a Use the proper cement and assembly procedures to secure the vent connector joints between the terminal and the blower outle...

Page 17: ...ptable vent terminal configurations Figure 4a When local conditions present a risk of ice accumulation on the vent terminals the configurations in 4b and 4c or the concentric termination are preferred The air intake screen can be removed for cold installations but this may make the air intake susceptible to debris buildup from birds or other animals If the air intake screen is removed to prevent f...

Page 18: ...18 Venting continued Figure 4c IMPORTANT When using the vent terminal configuration shown in 4c the extra elbows must be accounted for in the total vent length see Table 3 or Table 4 ...

Page 19: ...ass through the wall Use the proper cement to secure the vent terminal to the vent connector Use the proper cement and assembly procedures to secure the vent connector joints between the terminal and the blower outlet Provide support brackets for every 5 feet 1 5 m of horizontal vent Figure 5a IMPORTANT When using the concentric vent terminal the maximum vent length is reduced by 20 feet ...

Page 20: ... the 90 degree elbow is used the equivalent length of the elbow and short length of vent pipe must be factored into the total vent air intake pipe determinations see Tables 1 and 2 for appropriate vent connector lengths Figure 5b B DIMENSION MIN MAX 12 30 5 CM 44 111 8 CM THROUGH THE ROOF VENTING VERTICAL VENTING STANDARD TERMINALS Cut the necessary holes through the roof and ceiling and install t...

Page 21: ...LATION Figure 6 NOTE For installations requiring both horizontal and vertical runs the following rule must be followed Total length of straight pipe both horizontally and vertically must not exceed the maximum equivalent length listed in these instructions ...

Page 22: ...nstallation code latest edition A condensate kit must be installed when venting through the roof Figure 7 NOTE For installations requiring both horizontal and vertical runs the following rule must be followed Total length of straight pipe both horizontally and vertically must not exceed the equivalent length listed in these instructions For the concentric vent terminal the maximum vent length is r...

Page 23: ...al to 12 30 5 cm above the ground or anticipated snow level the installation must be modified as shown below see Figure 8 Refer to Table 3 for maximum venting lengths using 3 7 6 cm vent pipe or Table 4 for maximum lengths using 4 10 2 cm vent pipe The exhaust and intake terminals must not be less than 16 in 40 6 cm apart see figure 4a Figure 8 ...

Page 24: ...TALLATIONS Terminating Reduce 4 to 3 Reduce 10 1 cm to 7 6 cm of Elbows excl vent term Max straight Length ft m Min straight Length ft m 75 gal 2 90 Elbows with 1 90 Elbow 1 85 25 9 10 3 1 2 90 Elbows with 1 90 Elbow 2 80 24 4 10 3 1 2 90 Elbows with 1 90 Elbow 3 75 22 9 10 3 1 2 90 Elbows with 1 90 Elbow 4 70 21 10 3 1 2 90 Elbows with 1 90 Elbow 5 65 19 8 10 3 1 HIGH ALTITUDE INSTALLATIONS FOR E...

Page 25: ... burrs Burrs must be removed from the inside and outside edges of the pipe to ensure a proper seal c Applicator Tools i A natural bristle paintbrush or roller may be used to apply cement Prompt application of the cement is important due its fast drying properties 3 Inspection Cleaning Priming and Cementing a Inspect the pipe inside and out for dirt dust moisture or grease etc Check pipe and fittin...

Page 26: ...ion DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion Your water supplier or local plumbing inspector should be contacted on how to control this situation After installation of the water lines open the main water supply valve and fill the water heater While the water heater is filling open several hot water faucets to allow air to escape from ...

Page 27: ...e relief valve into the opening provided and marked for this purpose on the water heater Note Some models may already be equipped or supplied with a combination temperature and pressure relief valve Verify that the combination temperature and pressure relief valve complies with local codes If the combination temperature and pressure relief valve does not comply with local codes replace it with one...

Page 28: ...ier Please consult with a plumbing professional APPROXIMATE TIME TEMPERATURE RELATIONSHIPS IN SCALDS 120 F 49 C More than 5 minutes 125 F 52 C 1 to 2 minutes 130 F 54 C About 30 seconds 135 F 57 C About 10 seconds 140 F 60 C Less than 5 seconds 145 F 63 C Less than 3 seconds 150 F 66 C About 1 seconds 155 F 68 C About 1 second WARNING Hydrogen gas can be produced in an operating water heater that ...

Page 29: ... in the gas supply line feeding the water heater to permit servicing of the water heater Compounds used on the threaded joints of the gas piping must be resistant to the action of liquefied petroleum gases propane gas DO NOT apply pipe dope to the gas valve inlet and make certain that no pipe dope has become lodged in the inlet screen of the gas valve Extreme care must be taken to ensure no pipe d...

Page 30: ...e cord flush with the bushing Remove the junction box cover and pull the pressure switch outside of the junction box Cut the three wires from the line cord at the bushing inside of the junction box Drill a hole to receive the 1 2 electrical conduit connector on the backside of the blower Wire the power supply into the circuit at the appropriate locations Replace the pressure switch and junction bo...

Page 31: ...31 Wiring Diagram Figure 9 ...

Page 32: ...ater heater 3 Close the cold water supply shut off valve 4 Open the drain valve on the water heater by turning the stem counter clockwise The drain valve has threads on the end that will allow the connection of a standard hose coupling 5 Open a hot water faucet to allow air to enter the system To refill the water heater refer to To Fill the Water Heater WARNING Water heaters are heat producing app...

Page 33: ...33 Lighting and Shutdown instructions ...

Page 34: ...k battleship grey is approximately 180º F maximum set point Figure 10 DANGER Hotter water increases the risk of scald injury Scalding may occur within five 5 seconds at a temperature setting of 140 F 60 C To protect against hot water injury install an ASSE approved mixing valve in the water system This valve will reduce point of discharge water temperatures by mixing cold and hot water in branch w...

Page 35: ...n adjustable air shutter See Figure 11 At periodic intervals a visual check of the main burner and pilot flames should be made to determine if they are burning properly The main burner flame should light smoothly from the pilot Figure 11 WARNING Do not run out of propane gas Damage to the water heater may occur ...

Page 36: ...ner flames to determine that they are burning properly See Burner Flame Check section If sooting or other burner anomalies are evident shut down the water heater by turning off the gas per the instructions listed in this manual or as listed on the water heater WARNING Water heaters are heat producing appliances To avoid damage or injury there must be no materials stored against the water heater or...

Page 37: ...r other foreign material Inspect the burner ports for obstructions or debris and clean with a wire brush as needed Wire brush and or vacuum clean the combustion chamber as needed to remove scale deposits and debris NOTE It is imperative for proper operation of the water heater that the inner door be replaced in the original location ...

Page 38: ...n installed to extend tank life The anode rod should be inspected periodically every 2 years and replaced when necessary to prolong tank life Water conditions in your area will influence the time interval for inspection and replacement of the anode rod Contact the plumbing professional who installed the water heater or the manufacturer listed on the rating plate for anode replacement information T...

Page 39: ...8 117 6 056 542 6 142 216 6 442 178 6 684 821 6 935 280 7 063 132 7 063 133 7 007 748 7 270 087 7 334 419 7 337 517 7 409 925 7 458 341 7 559 293 7 621 238 7 634 976 7 650 859 7 665 210 7 665 211 7 699 026 7 866 168 7 900 589 7 971 560 7 992 526 8 082 888 8 146 772 Other U S and Foreign patent applications pending Current Canadian Patents 2 092 105 2 107 012 2 108 186 2 112 515 2 143 031 2 239 007...

Page 40: ...ause Pressure switch not working closed position 1 Pressure switch tubing kinked or blocked 2 Blocked pressure tap on switch 3 Faulty pressure switch Three flashes three second pause Pressure switch or blower temperature switch not working open position 1 Vent blockage or improper vent configuration 2 Pressure switch tubing kinked or blocked 3 Blower not spinning up to speed 4 Vent temperature too...

Page 41: ...sired false pilot flame sensed System auto resets Pilot valve stuck in open position Seven flashes three second pause Flammable vapor sensor fault detected see warning label 1 Flammable vapor present 2 Flammable vapor sensor exposed to excessive moisture 3 Flammable vapor sensor exposed to extreme ambient temp Eight flashes one flash three second pause Flammable vapor sensor out of specification P...

Page 42: ...stion air through the combustion system 5 The pressure switch closes 6 The control senses the closed pressure switch and starts the ignition process by providing a spark at the pilot electrode and allowing gas to flow to the pilot 7 When the pilot is lit the gas control senses the pilot flame and opens the main gas valve 8 The main burner is lit 9 The main burner and blower continue to operate unt...

Page 43: ...ice 4 Flue Baffle 16 Gas Feed line 5 Honeywell Gas Control Valve 17 Flammable Vapors Sensor 6 Drain Valve 18 Sensor Harness 7 Fiberglass Insulation not shown 19 Inner Door Assembly 8 Foam Insulation not shown 20 Blower Harness 9 Outer Door 21 Air intake boot 10 Steel Burner 22 Tee and vent pipe assembly 11 Diptube Nipple 23 Vapor switch mounting bracket 12 Anode Nipple ...

Page 44: ...used for boiler treatment must not be introduced into potable water used for space heating 3 This water heater must not be connected to an existing heating system or component s previously used with a non potable water heating appliance 4 When the system requires water for space heating at temperatures higher than required for other uses a means such as an ASSE approved mixing valve shall be insta...

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