Lochinvar 140H Installation Manual And Owner'S Manual Download Page 67 | Manualshive

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67

Page

Components Diagram

Owner's Guide

061

716

716

711

701

713

103

709

402

707

708

714

721

407

408

701

714

715

715

721

707 722

715

402
402

103

713

708

711

709

722

402

540H

240H/340H

Computer board assembly

8

7

6

5

4

3

2

1

ON

6

5

4

3

2

1

ON

R

W

G Y

PCB

W

120 VAC

G

Ground

SW

Ground

BK W

G

BK

W

Surge

box

73

53

9

3

BL

BL

R

BK

R

W BK

BK

BK

BK
BK
BK

W

BK

W

Heater

Y

Y

Thermostat

BK

O

Ground

Flame rod

AFR rod

BK

BK

W

MAX bu�on

MIN bu�on

Increase bu�on

Decrease bu�on

Green LED

DIP switches

Bypass

Valve

R

W

BR

Y

BL

Gas

Propor-

�onal

Valve

R

Y O

BL

W

FM

IG

Igniter rod

P

P

exchanger

Heat

thermistor

Inlet thermistor

Outlet thermistor

1

2

Flow

Sensor

Flow

Adjust-

ment

Valve

Hi-

switch

limit

O.H.C.F

MV
SV1
SV2
SV3

BL

BL BL

BL

LB

G

O

R

BL

BK

Parent

711

713

713

713

103

713

713

704

715

402

402

715

715

714

709

708

Y

Y

540H Outdoor Only

Y

Y

Heater

Heater

Heater

540H Indoor Only

Heater

Heater

Heater

707

BK

W

Remote controller

Built-in controller

W BL

R BK

722

Only

Indoor

540H

Hi-limit switch

for exhaust

Exhaust thermistor

W W

W W

721

Indoor

Only

540H

Drain plug detector

G

G

721

Outdoor

Only

540H

Drain plug

detector

G

G

540H

9

8

7

6

5

4

3

2

1

10

OFF

Remote controller

R

BK

R W

BK

Ground

G

O

W

Y BLO

R

PCB

W

120 VAC

G

Ground

SW

Ground

W

BK

G

Gas

Propor-

�onal

Valve

W

R

BK

BK

W

BK

BK

Outlet thermistor

Inlet thermistor

Surge

box

W BK

W

BL R

BK

Built-in controller

BK

DIP switches

Y

Y

Y

Flame rod

AFR rod

BK

W

Thermostat

Heater

Decrease bu�on

Increase bu�on

MIN bu�on

MAX bu�on

Green LED

Flow

Adjust-

ment

Valve

Flow

Sensor

FM

Indoor Only

240H/340H

713

713

103

713

713

704

408

407

722

707

402

402

714

709

708

Y

Y

240H/340H Outdoor Only

Y

Y

Heater

Heater

Heater

240H/340H Indoor Only

Heater

Heater

Heater

Igniter rod

P

P

IG

711

OR

G

LB

BL

O.H.C.F

BL

BL

BL

BL

BL

BL

SV3
SV2
SV1
MV

73

53

9

3

Hi-limit

switch

Hi-limit switch

for exhaust

Exhaust

thermistor

W

W

W

W

W

W

721

Only

240H/340H Indoor

G

G

G

Drain plug

detector

240H/340H Outdoor Only

G

G

G

Drain plug

detector

G

721

240H/340H

Wiring diagram

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Summary of Contents for 140H

Page 1: ...eighbor 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 WARNING If the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death ANSI Z21 10 3 CSA 4 3 540H...

Page 2: ...1 WATER CONNECTIONS 32 Pressure relief valve 32 CONDENSATE DRAIN 33 ELECTRICAL CONNECTIONS 35 TEMPERATURE REMOTE CONTROLLER 36 Included accessories 36 Installation 36 EASY LINK SYSTEM 38 Easy link connection procedures 38 MULTI UNIT SYSTEM 40 APPLICATIONS 41 Recirculation 41 Domestic and space heating 42 Dual purpose hot water heating 44 INITIAL OPERATION 45 Owner s Guide OPERATING SAFETY 47 NORMA...

Page 3: ... recommend that you read through this installation manual carefully Keep this manual for future reference If you need an additional manual contact the manufacturer or your local distributor You may also download a manual from our website When you call please tell us the product name and the serial number of your unit written on the rating plate of the water heater ...

Page 4: ...r AT H3S DV 340H Outdoor AT H3S OS 540H Indoor AT H3 DV 540H Outdoor AT H3 OS Natural Gas Input Operating Range BTU h Min 15 000 Max 120 000 Min 15 000 Max 160 000 Min 15 000 Max 180 000 Min 15 000 Max 199 000 Propane Input Operating Range BTU h Min 15 000 Max 120 000 Min 13 000 Max 160 000 Min 13 000 Max 180 000 Min 13 000 Max 199 000 Gas Connection 1 2 NPT 3 4 NPT Water Connections 3 4 NPT Water...

Page 5: ...ry heat exchanger Intake port Condensate drain port Cold water inlet Gas Hot water outlet Computer board Fan motor Gas valves Igniter Thermistor Thermistor Bypass valve Primary heat exchanger Exhaust thermistor Water control valve Thermistor Flow sensor Burners 1 2 3 4 5 4 6 7 7 7 8 4 4 7 This diagram illustrates tankless water heater design concepts only and does not accurately represent the wate...

Page 6: ... injury DANGER Indicates information considered important but not hazard related NOTICE WARNING Water temperatures over 125 F 52 C can cause severe burns instantly or death from scalding The water temperature is set at 120 F 50 C from the factory to minimize any scalding risk Before bathing or showering always check the water temperature To reduce the risk of scalding install Thermostatic Mixing V...

Page 7: ...and other contaminants In environments with a high level of contaminants laundry facilities hair salons pet salons chemical plants commercial kitchens etc direct venting is required 10 The Indoor models are to be installed indoors only These units are equipped with a thermistor and hi limit switch for the exhaust gas detecting excess temperatures within the flue and enabling the unit to safely sto...

Page 8: ...The water heater must be securely mounted to a wall or other suitable structure so that it is level left to right front to back and plumb vertically Failure to observe these warnings could result in severe personal injury death and or property damage NOTICE The warranty will not cover damage caused by water quality Only potable water can be used with this water heater Do not introduce pool or spa ...

Page 9: ... 1 Temperature remote controller 2 Pipe cover 3 Neutralizer kit 4 3 PVC concentric termination 5 Recess box 6 Non return valve 7 4 PVC Adapter for Non return valve INCLUDED ACCESSORIES Check that these items below are included with the water heater Installation manual and owner s guide Temperature remote controller kit Outdoor models only Refer to pp 10 and 35 Bird screen Indoor models only Commun...

Page 10: ...wo separate penetrations for the intake and exhaust piping The termination includes a bird screen restricting small animals pests and foreign objects from entering into the vent system 2 Pipe cover 100112718 TH PC03 for 240H 340H 540H 100187904 TH PC04 for 140H The pipe cover protects the plumbing pipes to the water heater from unexpected adjustments This pipe cover is fixed to the bottom of the w...

Page 11: ...s direct vented Prohibited Prohibited Ensure that you meet the minimum clearances shown below for a direct vent termination Ensure that you meet the minimum clearances shown below for Outdoor vent termination Locate the outdoor water heater so it s vent terminal meets the following clearances Locate the vent terminal of an indoor heater to meet the following clearances 2 ft 61 cm from an inside co...

Page 12: ... OFF No 5 ON OFF ON 1 2 3 4 5 6 7 8 9 10 No 3 OFF No 4 O N No 5 O N OFF ON 1 2 3 4 5 6 7 8 9 10 No 3 O N No 4 O N No 5 O N 540H Lower bank of DIP switches OFF ON 1 2 3 4 5 6 No 2 OFF No 3 OFF No 4 OFF OFF ON 1 2 3 4 5 6 No 2 OFF No 3 O N No 4 OFF OFF ON 1 2 3 4 5 6 No 2 OFF No 3 OFF No 4 O N OFF ON 1 2 3 4 5 6 No 2 OFF No 3 O N No 4 O N OFF ON 1 2 3 4 5 6 No 2 O N No 3 O N No 4 O N Altitude DIP sw...

Page 13: ...oved common vent system Air supply pipe can be made of ABS PVC solid core CPVC solid core polypropylene corrugated stainless steel or Category lll IV stainless steel Regarding exhaust pipe refer to pages 21 to 27 Use of cellular core PVC ASTM F891 cellular core CPVC or Radel polyphenylsulfone in nonmetallic venting systems is prohibited Covering non metallic vent pipe and fittings with thermal ins...

Page 14: ...izontally L Clearance above paved sidewalk or paved driveway located on public property 7 ft 213 cm 7 ft 213 cm 7 ft 213 cm M Clearance under veranda porch deck or balcony 1 ft 30 cm 1 ft 30 cm 1 ft 30 cm Clearance in accordance with local installation codes and the requirements of the gas supplier A vent shall not terminate directly above a sidewalk or paved driveway that is located between two s...

Page 15: ...ll Anticipated Snow level Exhaust Termination 2ft 610mm min 1ft 305mm min 1ft 305mm min Inside corner Inside corner Anticipated Snow level 2ft 610mm min 1ft 305mm min 1ft 305mm min Combined intakeand exhaust termination For direct vent sidewall terminations that use two separate penetrations for the intake and exhaust keep the termination clearances shown in the diagrams on the right Improper inst...

Page 16: ...e to observe this warning may result in severe personal injury or death WARNING Canadian requirements differ from the guidelines in this section In Canada follow the requirements of B149 1 Natural Gas and Propane Installation Code current edition as well as local and provincial codes Contact your local code enforcement agency for direction NOTICE Angled roof termination Anticipated snow level 2 ft...

Page 17: ...chemicals are not present at the air intake Presence of such chemicals at the air intake could result in death personal injury or property damage Examples of locations that require outside air due to chemicals include Beauty salons Photo processing labs Indoor pools Laundry hobby or craft rooms Chemical storage areas Restaurants Products such as aerosol sprays detergents bleaches cleaning solvents...

Page 18: ...utside ventilation if you want to provide combustion air with outside ventilation If the air volume of the room is greater than the required air volume it may be possible to install the water heat er without outside ventilation However be sure to consider the effects of exhaust fans Exhaust fans can affect the amount of combustion air that is available in your home Appliances such as furnac es who...

Page 19: ...these rules to ensure that vents and ducts provide adequate air flow Each vent opening must be no smaller than 100 in2 645 cm2 Ducts must have the same cross sectional area as free area of the opening Rectangular ducts must have a minimum dimension of no less than 3 in 76 mm All screens must have mesh or larger Movable louvers must be locked open or interconnected with the equipment so that they o...

Page 20: ...e 12 305mm maximum Gable vent to outdoors Install above insulation Figure 5 Single opening Conﬁned Space 1 in2 6 5 cm2 per 3 000 btu h Alternative Opening Location Figure 6 Two permanent openings Two permanent Openings 1 in2 6 5 cm2 per 1 000 btu h 12 305mm maximum 12 305mm maximum Conﬁned Space Figure 4 Horizontal duct openings 1 in2 6 5 cm2 per 2 000 btu h Conﬁned Space Outlet Inlet Outdoor Air ...

Page 21: ... heater is installed and 100 ft 30 5 m for 4ʺ venting deducting 5 ft 1 5 m for each elbow used in the venting system Do not use more than 5 elbows See the table below When the horizontal vent run exceeds 5 ft 1 5 m support the vent run at 3 ft 0 9 m intervals with overhead hangers Installation Installation Manual Diameter Max No of Elbows Max Vertical and Horizontal Total Vent Length 3 in 5 70 ft ...

Page 22: ...emale 2 inch vent installation for 140H model 2ʺ pipe for venting is only approved for the 140H model in the Single Pipe with Room Air Intake Installation Horizontal Installation as shown below Maximum vent length for 2ʺ venting is 6 5 ft 2 0 m not including termination One long sweep elbow may be installed Deduct 5 ft 1 5 m from maximum vent length 2ʺ venting is approved on installations up to 3 ...

Page 23: ...ontal Installation Wall Connect between exhaust vent collar and piping See the instructions on the next page Hanger Hanger 140H 240H 340H Bank of DIP switches 540H Upper bank of DIP switches Lower bank of DIP switches Installation Installation Manual Connect between exhaust vent collar and piping See the instructions on the next page Single pipe with room air intake installation Roof flashing Fire...

Page 24: ...CPVC venting only PVC adapter will accept 3 straight pipe 3 vent connection for PVC CPVC venting only Exhaust vent collar with 3 adapter Female Intake vent collar with 3 adapter Female 3 straight pipe 3 straight pipe 3 PVC adapters are not approved for use in Canada NOTICE Intake vent collar with 3 adapter Female Exhaust vent collar with 3 adapter Female 3 x 4 increaser 3 x 4 increaser 4 straight ...

Page 25: ...This is a Category IV appliance and must be vented accordingly The vent system must be sealed airtight All seams and joints without gaskets must be sealed with high heat resistant silicone sealant or UL listed aluminum adhesive tape having a minimum temperature rating of 160 F 71 C For best results a vent system should be as short and straight as possible The Indoor models are a Category IV applia...

Page 26: ...ter heater before changing the DIP switch settings Failure to observe these warnings could lead to carbon monoxide poisoning or death 4 vent connection for direct vent installation 4 stainless steel vent straight pipe or appliance adapter Exhaust vent collar of the Indoor models Female Intake vent collar Female 4 stainless steel vent straight pipe or appliance adapter Exhaust vent collar of the In...

Page 27: ...mination tee 100112547 2NVTT4 2SVSTTF04 4 Rain Cap 100112415 2NVRC4 2SVSRCF04 4 Extreme weather rain cap 100112548 2NVWC4 2SVSHRC04 4 3 in 1 adaptor F F adaptor condensate drain back flow preventer 100112549 2NVBFA4 2SVBFDPA04 4 F F adaptor 100112399 2NVAFF4 2SVEEWCF0445 4 Backflow preventer w F F adaptor 100112416 2NVBFU4 2ZVB04 4 exhaust 3 intake DV concentric termination 5 10 127 254 mm adjusta...

Page 28: ...Centrotherm s vent line 240HX3 340HX3 540HX3 models do not have Easy Link or Multi Unit capability 140H Indoor models are not approved for common venting Installation Installation Manual Intake wall Exhaust Roof Condensate drain port Non Return Valve Exhaust wall Roof Non Return Valve Condensate drain port Exhaust Intake wall Roof Non Return Valve Condensate drain port Allowable models for common ...

Page 29: ... 14 to 16 Insert bird screen in elbow terminations Common venting system Vent Diameter D Max No of water heaters Max Vertical and Horizontal Total Vent Length L DIP switch settings 4 in 2 25 ft 7 6 m 240H 340H Indoor OFF ON 1 2 3 4 5 6 7 8 9 10 No 6 ON No 7 OFF 540H Indoor Upper bank of DIP switches OFF ON 1 2 3 4 5 6 7 8 No 3 ON No 4 OFF 5 in 2 50 ft 15 2 m 3 20 ft 6 1 m 6 in 2 100 ft 30 5 m 3 75...

Page 30: ...e gas supply pressure to the heater is greater than the specified maximum a field supplied regulator is required The regulator must lower the gas pressure within the approved range Install the gas regulator according to the manufacturer s instructions The regulator must be sized for the water heater input and provide the specified pressures that are listed on the rating plate In the absence of min...

Page 31: ... m Length 3 4 Pipe size 5 1 5 m Length 1 1 4 Pipe size Gas sizing example Natural Gas Unit kBTU per hour Pipe Size Length Diameter 10 3 0 m 20 6 1 m 30 9 1 m 40 12 2m 50 15 2m 60 18 3m 70 21 3m 80 24 4m 90 27 4m 100 30 5m 125 38 1m 150 45 7m 200 61 0m 1 2 268 184 148 126 112 101 93 87 82 77 68 62 53 3 4 567 393 315 267 237 217 196 185 173 162 146 132 112 1 1 071 732 590 504 448 409 378 346 322 307...

Page 32: ...t water cannot splash out ward and cause damage or personal injury Attach the discharge tube to the pressure relief valve and run the end of the tube to within 6 in 152 mm from the floor This discharge tube must allow free and complete drainage without any restrictions WARNING Do Not plug the pressure relief valve If the pressure relief valve discharges periodically this may be due to thermal expa...

Page 33: ...pass is required if a neutralizer is installed The condensate drain is at atmospheric pressure non pressurized and therefore must be allowed to drain freely with gravity only Ensure that the condensate drain tube is not plugged blocked or kinked Ensure that it slopes downward to allow condensate to flow freely All portions of the condensate drain neutralizer and drain tube must be at a lower eleva...

Page 34: ...zer 1 2 Condensate drain tube Overflow bypass 1 2 Condensate drain tube Neutralizercartridge Included with Neutralizer accessory 1 2 MPT x 3 8 FPT Included with Neutralizer accessory 1 2 Condensate drain tube 1 2 Condensate drain tube 1 2 FPT x 1 2 HB Included with Neutralizer accessory 1 2 Condensate drain tube 1 2 MPT Condensate connection 2 50 mm MIN distance Floor drain standpipe pump or other...

Page 35: ...h a power plug instead of a junction box The following procedure is for the outdoor model only 1 The water heater must be electrically grounded Do not attach the ground wire to either the gas or the water piping 2 The water heater requires a 120 VAC 60 Hz electrical power supply that is properly grounded A proper disconnect i e on off switch power plug etc controlling the main power to the water h...

Page 36: ...elow are included with the remote controller Temperature remote controller Screws Fork terminals Manual Remote controller cable Qty 1 Qty 2 Qty 4 Qty 1 Qty 1 Installation This remote controller is NOT waterproof The water heater can only have one remote controller Do not install in high temperature environments high humidity conditions outdoors in direct sunlight or within the reach of children Ma...

Page 37: ...inals to the connector base on the back side of the remote controller with two screws Make sure the terminals are firmly fixed See the above instructions for installation of the remote controller 5 Pull the remote controller cable through the hole at the bottom of the water heater s casing 6 Secure both controller cable terminals to the terminals on the computer board as shown below Secure them un...

Page 38: ... model in an Easy Link System 710 model 710 ASME 520 model 540H model CT 199 model 540P model Only when 540P is a PARENT unit in the system Hot Out Gas In Cold In Due to the difference in the connector type for the Easy Link System between the 710 and 540H cut out the connectors for the Easy Link System and then splice the wires directly together when connecting the 710 and 540H in the Easy Link S...

Page 39: ...position of the DIP switch When the 540P 710 or 520 is a PARENT unit in an Easy Link System refer to the respective manual for DIP switch settings Either a built in controller or a remote controller is required for the Easy Link System for ease of usage and maintenance NOTICE WARNING To change the DIP switch settings for the Easy Link System locate the lower bank of DIP switches at the bottom left...

Page 40: ...ect the 1 connector and the 2 connector with the communication cable refer to page 9 or 18 gauge wire cables The total cable length can be up to 250 ft 76 2 m long In a Multi Unit System 540H models can only be connected with other 540H models or 710 models The multi unit controller allocates random numbering See the controller instructions to learn how to renumber the system units sequentially OF...

Page 41: ... may reduce the water flow rate These items should be installed per the manufacturer s instructions The installer will need to consider the size of water tubing material type and fittings when determining the pres sure drop of the system to size the recirculation pump Note that these characteristic vary for each tubing material of the same nominal size Refer to the water tubing manufacturer for pr...

Page 42: ...ed by the manufacturer of the air handler Refer to the air handler manufacturer s instructions and specification documents for this flow rate The pump field sup plied or provided by the air handler manufacturer must be able to provide this minimum flow rate When sizing the pump the installer must take into account the pressure drop of the following Hydronic air handler Refer to the manufacturer fo...

Page 43: ...S CIRCULATION PUMP THERMOSTATIC MIXING VALVE COLD WATER SUPPLY EXPANSION TANK AIR HANDLER TEMPERED HOT WATER TO FIXTURE GAS P 1 Below is a suggested piping layout The installer must properly install the system per manufacturers instructions and local codes Applications Installation Manual ...

Page 44: ...y local codes and must meet BTU rating of water heater model used Check valve will have 1 8 inch hole drilling in clapper optional Atmospheric vacuum breaker Shutoff valve Pressure gauge Apply correct thermal expansion tank size per application Shutoff valves Shutoff valves Check valves Cold water inlet Gas inlet Water filter Drain plug Thermostatic mixing valve Hot water supply and return to heat...

Page 45: ...Thermostatic Mixing Valves temperature limiting valves at each point of use Check the GAS and WATER CONNECTIONS for leaks before firing unit for the first time Open the main gas supply valve to the unit using only your hand to avoid any spark Never use tools If the knob will not turn by hand do not try to force it call a qualified service technician Forced repair may result in a fire or explosion ...

Page 46: ...mmend that you read through this owner s guide carefully Keep this manual for future reference If you need an additional manual contact the manufacturer or your local distributor You may also download a manual from our website When you call please tell us the product name and the serial number of your unit written on the rating plate of the water heater ...

Page 47: ...empted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately contact a qualified installer or service agency to replace a flooded water heater Do not attempt to repair the unit It must be replaced 1 STOP Read the safety information above on this label 2 Turn off all electric power to the appliance 3 Do not attempt to light the burner by h...

Page 48: ...of children 4 Water heater has a main burner which may come on at any time and will ignite flammable vapors Vapors 1 Cannot be seen 2 Are heavier than air 3 Go a long way on the floor 4 Can be carried from other rooms to the main burner by air currents Do not install water heater where flammable products will be stored or used unless the main burner is at least 18 above the floor This will reduce ...

Page 49: ...ler is installed it will take priority over the built in controller The controller has an energy saving mode Five minutes after the water heater stops operating the backlight of the controller turns off The backlight of the remote will turn back on once the water heater begins firing again NOTICE GENERAL 1 Open a cold water fixture 2 Mix hot water with the cold water to get the correct temperature...

Page 50: ... 120 F 50 C 3 Press and hold the INFO button and the HOT button for at least 3 seconds The remote will emit a beep and change to 125 F 52 C 4 Press the HOT button to set up to 140 F 60 C 540H model only Increasing temperature above 140 F 60 C To reduce the risk of scalding install Thermostatic Mixing Valves tem perature limiting valves at each point of use 1 The water heater must be in Stand By to...

Page 51: ... Unit conversion mode Units of measure can be changed from Imperial to Metric and vice versa For example temperature can be changed from F to C Flow rate will also change from gallons per minute to liters per minute when this setting is changed Follow this procedure to change this setting Operation Screen on the controller Built in controller Remote controller 1 Press the ON OFF button on the cont...

Page 52: ...0 C DEFAULT 140 F 60 C No 9 OFF No 9 ON 140H 240H 340H OFF ON 1 2 3 4 5 6 7 8 9 10 OFF ON 1 2 3 4 5 6 7 8 9 10 Bank of DIP switches NOTE The dark squares indicate the correct DIP switch positions Lower bank of DIP switches 120 F 50 C DEFAULT 140 F 60 C OFF ON 1 2 3 4 5 6 No 5 OFF OFF ON 1 2 3 4 5 6 2 3 4 5 6 No 5 ON 540H Computer board Upper bank of DIP switches Lower bank of DIP switches FLOW App...

Page 53: ...p power supply In the event of a power outage during freezing conditions the manufacturer recommends draining water page 55 from the water heater and disconnecting power In any areas subject to freezing temperatures the manufacturer highly recommends an indoor installation with an indoor model The manufacturer also highly recommends the use of a backflow preventer sold separately to minimize the a...

Page 54: ... checked annually for dust lint grease or dirt by a licensed technician Visually check the burner flames see below through the burner window in the burner assembly located at the middle of the water heater Satisfactory Blue flame Unsatisfactory Flame blowing up Unsatisfactory Red or Yellow flame The manufacturer recommends having the unit checked once a year or as necessary by a licensed technicia...

Page 55: ... 6 Have a bucket or pan to catch the water from the unit s drain plugs If isolation valves are installed open the drains to drain the water If isolation valves are not installed unscrew the filters and open the pressure relief valve to drain all the water out of the unit Do not lose the o rings that will be on the two filter caps 7 In addition to the large and small drain plugs the model has anoth...

Page 56: ...1 5 W C Pressure drops that exceed 1 5 W C can indicate restricted gas flow undersized gas lines and or undersized supply regulators NOTICE In Canada the pressure drops cannot exceed those specified in CSA B149 1 9 Measure gas supply pressure at minimum heater operation Reduce water flow so the heater is running at minimal operation Press the MIN button on the computer board Refer to the diagrams ...

Page 57: ...GPM 1 9 L min through the water heater p 49 Is the unit frozen p 53 Is there enough gas in the tank cylinder For Propane models The hot water turns cold and stays cold Is the flow rate enough to keep the water heater running p 49 If there is a recirculation system installed does the recirculation line have enough check valves p 41 Is the gas supply valve open fully p 45 Is the filter on the cold w...

Page 58: ... are numbered randomly To check which numbers are assigned to which Child units push the increase button on the computer board of any Child unit as shown below The unit number will be displayed on the temperature controller of the Child unit and or the remote controller of the Child unit if installed Refer to pp 38 and 39 Increase button to check unit number Troubleshooting Owner s Guide ERROR COD...

Page 59: ...Indication Easy Link System 540H model only Error codes will be displayed differently with units installed in an Easy Link System The built in remote con troller installed in a PARENT unit will show both the error code and which unit has the error code Below is an example of how an error code of 321 is displayed in an Easy Link System Example If Unit 2 has the 321 error code inlet thermistor failu...

Page 60: ...ng spark ignition sound coming from the burner Part 101 when the water heater prepares for combustion Listen for the double clunk sound coming from gas valve assembly Part 102 when water heater goes into combustion Check if there is leaking from heat exchanger Part 401 121 Three Flashes Loss of flame Check if the Hi limit switch Part 412 is functioning properly Check for connection breakage of wir...

Page 61: ...One Flash Gas solenoid valve drive circuit failure Refer to the 111 and 121 error codes 721 Six Flashes False flame detection For indoor models check if condensate drain is installed on the vent collar of the water heater Check if there is leaking from heat exchanger Part 401 741 N A Miscommunication between water heater and remote controller Check the model type of the remote controller Inspect t...

Page 62: ...r COMPONENTS DIAGRAM Components Diagram Owner s Guide Built in controller 140H Indoor 723 722 056 722 725 419 052 052 004 004 052 067 003 007 008 001 717 702 704 050 002 002 008 001 006 005 052 704 Temperature remote controller 724 100209924 140H ...

Page 63: ...W Thermostat Heater Heaters Indoor only Gas Valve W BK W BK controller Indoor only W Y Y Y for the secondary heat exchanger for the heat exchanger and water pipes for the drain hose for the water pipes for the water inlet for the water outlet Built in Green LED O R G LB BL SV3 SV2 SV1 MV O H C F BL Hi limit BL BL BL BL BL 73 53 9 3 708 IG Igniter rod P P 713 713 713 709 704 725 707 707 714 Hi limi...

Page 64: ...053 117 103 105 065 054 104 115 053 053 106 107 108 709 110 062 109 111 711 112 053 114 113 707 102 053 121 711 150 057 055 063 053 066 714 117 055 119 151 118 051 G Manifold assembly Burner assembly Components Diagram Owner s Guide 140H ...

Page 65: ...7 456 460 402 461 458 404 406 457 405 052 454 407 059 417 053 418 A B A B 401 154 E 473 468 064 456 460 452 053 068 067 456 473 468 064 456 460 A 456 456 474 B 473 468 064 456 460 456 for Indoor model 424 425 471 718 470 053 413 422 426 423 422 416 464 009 052 E G 421 412 Components Diagram Owner s Guide 140H Indoor 140H Outdoor Water outlet section Water inlet section ...

Page 66: ...702 713 004 002 001 001 004 Components Diagram Owner s Guide 240H 340H 540H Indoor 240H 340H 540H Outdoor 240H 340H 540H Temperatureremotecontroller 724 Case assembly 121 713 703 706 704 713 053 703 240H 340H 540H Surge box assembly 240H 340H 540H Indoor 723 722 056 Built in controller ...

Page 67: ...7 BK W Remote controller Built in controller W BL R BK 722 Only Indoor 540H Hi limit switch for exhaust Exhaust thermistor W W W W 721 Indoor Only 540H Drain plug detector G G 721 Outdoor Only 540H Drain plug detector G G 540H 9 8 7 6 5 4 3 2 1 10 OFF Remote controller R BK R W BK Ground G O W Y BL O R PCB W 120 VAC G Ground SW Ground W BK G Gas Propor onal Valve W R BK BK W BK BK Outlet thermisto...

Page 68: ...115 106 107 108 110 109 111 711 112 062 053 053 709 053 401 103 105 065 054 113 114 102 063 121 708 119 151 118 055 051 150 057 055 063 117 053 116 062 066 714 719 707 709 711 117 G Manifold assembly Burner assembly Burner assembly 240H 340H 540H 540H ...

Page 69: ...1 064 D 472 067 153 152 053 718 470 415 401 B E F 473 451 458 458 458 458 458 464 052 426 423 422 416 422 421 G 402 460 456 461 458 404 417 407 454 405 457 406 410 455 408 458 454 462 C D 052 059 052 409 417 Water outlet section Water inlet section 403 456 460 458 462 B A Bypass section 540H 540H 240H 340H Water Way assembly Components Diagram Owner s Guide 240H 340H 540H ...

Page 70: ... SUS410 100074210 051 Truss screw M4 10 W Washer 100074509 052 Truss screw M4 10 Coated SUS3 100074211 053 Truss screw M4 10 SUS 100074245 054 Hex head screw M4 12 W Washer SUS3 100074510 055 Hex head screw M4x8 FEZN 100074248 056 Pan screw M4x20 N A 057 Tap tight screw M4x12 FEZN 100074385 058 Pan head screw M3x6 SUS3 100074272 059 Truss head screw M4x6 SUS3 100074512 061 Screw M3x6 Plus bind FEZ...

Page 71: ...076321 N A 113 Manifold gasket A 100074229 114 Manifold gasket B 100074230 115 Burner holder gasket 100074217 116 Pressure port 100074227 117 Combustion chamber tube 100074528 118 Gas inlet 100076323 100074616 119 Gas inlet ring 100074234 100074526 121 Surge box plate N A N A 150 O ring P18 NBR Black 100074533 151 O ring P20 NBR Black 100074242 152 Silicon ring for Outdoor models 100074553 1000746...

Page 72: ...fixing plate 140H N A N A 426 Drain detector fixing plate N A 450 Pipe heater fixing plate N A 100074273 451 Heater fixing plate 16 100074310 452 Fuse fixing plate 18 240H 340H 540H N A 100074251 Fuse fixing plate 140H N A N A 453 Fuse fixing plate 14 240H 340H 540H N A 100074331 454 O ring P4 FKM 100076303 455 O ring P6 FKM 100076305 456 O ring P14 FKM 100076306 457 O ring P15 FKM 100076307 458 O...

Page 73: ... N A 708 Gas valve wire 100076340 100074651 709 Flame rod wire 100076341 100074652 711 Igniter assembly 100076342 100074640 713 Switch wire with thermostat for Indoor model 100342431 Switch wire with thermostat for Outdoor model 100342432 714 Proportional gas valve wire 100074642 100074657 715 24V cables for 540H model N A 100074658 716 Computer board cover 100074375 717 Cable clamp for Indoor mod...

Page 74: ... 6 6 6 6 6 6 6 6 6 1 5 5 5 1 4 7 4 3 0 0 2 0 4 0 6 0 8 0 40 F 4 C 50 F 10 C 60 F 16 C 70 F 21 C 30 15 0 Output Hot Water GPM Set temp F C Incoming temp L M 19 2 23 0 25 0 25 0 17 7 20 9 25 0 25 0 16 4 19 2 23 0 25 0 15 3 17 7 20 9 25 0 14 4 16 4 19 2 23 0 13 5 15 3 17 7 20 9 12 8 14 4 16 4 19 2 12 1 13 5 15 3 17 7 11 5 12 8 14 4 16 4 Output Temperature vs GPM Max 6 6 GPM with Various Inlet Water t...

Page 75: ...5 57 140 60 150 65 160 70 40 F 4 C 6 3 5 8 5 4 5 0 4 7 4 4 4 2 4 0 3 8 3 4 3 2 50 F 10 C 7 6 6 9 6 3 5 8 5 4 5 0 4 7 4 4 4 2 3 8 3 4 60 F 16 C 9 5 8 4 7 6 6 9 6 3 5 8 5 4 5 0 4 7 4 2 3 8 70 F 21 C 10 0 10 0 9 5 8 4 7 6 6 9 6 3 5 8 5 4 4 7 4 2 0 0 2 0 4 0 6 0 8 0 10 0 12 0 40 F 4 C 50 F 10 C 60 F 16 C 70 F 21 C 45 30 15 0 L M Output Hot Water GPM Set temp F C Incoming temp 23 9 28 6 35 8 37 9 22 0 ...

Page 76: ...68A255 1 2000534710 REV F ...

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