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Eternal Hybrid Water Heater Technical Speci



cations

Model Name

GU145 / GU145(S)

GU195(S) / GU195(M)

Thermal Ef



ciency (

) / Energy Factor

98% NG / 99% LP / 0.96 Energy Factor

Installation

Indoor / Outdoor / Wall Hung / Floor Standing

Flue System

Sealed Combustion Direct Vent / Power Vent Convertible

Vent Run

3" PVC

Up to 100ft, 6 Elbows Max, 5ft Deduction Per Elbow

Condensate Discharge Low Fire / Med Fire / High Fire

0.5GPH / 1.1GPH / 1.75GPH

Condensate pH Level

4 pH

Gas Type

Pre-set for NG / LP Conversion Kit Included

Unit Connections

Gas and Water

3/4" Female NPT

Electricity

Dedicated 120VAC, 60Hz w/3 Pronged Power Cord

Gas Input Rate

Min / Max

26,000 BTU/Hr / 145,000 BTU/Hr

26,000 BTU/Hr / 195,000 BTU/Hr

Gas Supply Pressure NG / LP

3.5" WC to 10.5" WC / 8" WC to 14" WC

Manifold Pressure
(minimum)

Time engineering

(+) 0.1" W.C.

Serial # (G902367~G1101155)

(+) 0.1" W.C.

Time engineering
Serial # (G1101156~G1111021)

(-) 0.02" W.C.

Honeywell
Serial # (G1111022~)

(-) 0.01" W.C.

Ignition System

Direct Electronic Ignition w/Automatic Flame Sensing

Burner System

Single Ori



ce Premixed Fuel Injection Metal Fiber Infrared

Gas Valve System

Dual Stage Negative Pressure Full Modulation Air Ratio

Internal Piping Material

Stainless Steel

Reserve Tank

2 Gallons

Electrical Consumption

Standby 8W, Max 45W

Standby 8W, Max 85W

Maximum Noise Level

40dB (a)

50dB (a)

Remote Controller

Up to 3 kits

Multi Unit Capable

Up to 2 in manifold, No Built - In MCU / M Option - MCU up to 8 Units

GPM Capacity Range

0.1 to 14.5 GPM

0.1 to 19.5 GPM

Temperature Sensing

Tank, Cold Inlet, Hot Outlet, Air Thermistors

Temperature Control

Simulation Feed Forward and Feed Back, Computer Controlled Mixing Valve

Flow Sensing

Dual Flow Sensors w/Built-in GPM Monitor

Temperature Settings Range

100

F to 180

F Factory Limited to 140

F in 5

F Steps

Unit Dimensions (WxHxD)

16.9" x 29.1" x 13.8"

Unit Weight

83Ibs / M Option - 85Ibs

Safety Devices

T&P Valve, Flame Rod, Thermal Fuse(306

F), Remaining Flame

Detection, Fan RPM Check, Freeze Protection(-40

F), Vent Blockage

Detection, Thermostat Switches(167

F / 194

F), Gas Valve Current

Leak Detection, Ignition Prevention, Dipswitch Temperature Lock, GFCI
w/2 x 5A Fuses.

GU145S and GU195S are for single or dual unit applications with no multi control unit. The GU195M is for
multiple unit applications only and cannot be used for single unit applications.

Maximum manifold pressure is indicated on the rating label on right side of the unit.

Independent DOE tested.

Содержание GU145 (S)

Страница 1: ...ed and maintained Failure to follow these instructions exactly could result in re explosion serious bodily injury and or property damage Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other appliance WARNING IMPORTANT Only specially trained and authorized personnel are permitted to service this water heater NOTE TO ASSEMBLER INSTALLER Leave this man...

Страница 2: ...onmon Vent Installation P27 Concentric Vent Kit Outdoor Vent Kit Installation P28 Vent Pipe Installation Terminator Position P29 Gas Supply Piping P30 LP Conversion P31 Water Supply Connection P32 Condensate Piping P33 Temperature and Pressure Relief Valve IPC For Recirculation Application P34 Electrical Connection P35 Optional Remote Controller Installation P36 37 MCU Installation P38 40 Plumbing...

Страница 3: ...3 Included Accessories Optional Accessories Self Tapping Screw 5 32 x 5 8 2pcs Philips Head Screw M8x15 4pcs Stainless Steel Expansion Bolt 4pcs ...

Страница 4: ...ber Infrared Gas Valve System Dual Stage Negative Pressure Full Modulation Air Ratio Internal Piping Material Stainless Steel Reserve Tank 2 Gallons Electrical Consumption Standby 8W Max 45W Standby 8W Max 85W Maximum Noise Level 40dB a 50dB a Remote Controller Up to 3 kits Multi Unit Capable Up to 2 in manifold No Built In MCU M Option MCU up to 8 Units GPM Capacity Range 0 1 to 14 5 GPM 0 1 to 1...

Страница 5: ...5 Dimensions GU145 S 508 11 12 21 22 1145 S GU195 S M 508 11 12 21 22 1195 S M ...

Страница 6: ...6 Parts Diagram for Model GU145 S 508 11 12 21 22 1145 S GU195 S M 508 11 12 21 22 1195 S M ...

Страница 7: ...7 Parts Diagram for Model GU145 S 508 11 12 21 22 1145 S ...

Страница 8: ...t 14 Drain Valve Assembly 15 Main Power Cord 16 Handle 17 Condensing Nipple 18 Mesh Screen 19 Outdoor Venting Cap Optional 20 Trap Cleaner Assembly 21 Radial Blower Assembly 22 Gas Valve 23 Air Pressure Switch GU145 S 24 Burner Assembly 25 Main Controller GU145 S 26 Cold Water Tube Assembly GU145 S 27 Hot Water Tube Assembly GU145 S 28 Flexible Silencer Kit 29 Mixing Valve 30 EC Adapter 31 Water P...

Страница 9: ...9 Parts Diagram for Model GU195 S 508 11 12 21 22 1195 S Parts Diagram for Model GU195 M 508 11 12 21 22 1195 M ...

Страница 10: ... 11 Vent Collar 12 Vent Collar Packing 13 Rubber Foot 14 Drain Valve Assembly 15 Main Power Cord 16 Handle 17 Condensing Nipple 18 Mesh Screen 19 Outdoor Venting Cap Optional 20 Trap Cleaner Assembly 21 Radial Blower Assembly 22 Gas Valve 23 Air Pressure Switch GU195 S M 24 Burner Assembly 25 Main Controller GU195 S M 26 Cold Water Tube Assembly GU195 S M 27 Hot Water Tube Assembly GU195 S M 28 Fl...

Страница 11: ... damaged parts Far away from water heater In approved containers Tightly closed Out of children s reach Cannot be seen Vapors are heavier than air Go a long way on the oor Can be carried from other rooms to the main burner by air currents Turn off all electrical power to the water heater if service is to be performed Turn the manual gas valve located on the outside of the unit clockwise to the off...

Страница 12: ...oof using 3 vent piping the total vent run cannot exceed 95 feet with one 90 elbow If more elbows are required the venting distance must be reduced 5 feet for every 90 elbow Vent piping should slope downward towards the unit Horizontal runs require adequate support at 3 feet intervals and vertical runs supported at 5 feet intervals Condensation may be created at times as the combustion gases exit ...

Страница 13: ... CLEANING OUT THE TRAP The condensate trap must be lled with water prior to using the water heater Pour water down the exhaust collar until water visibly ows out of condensate drain before rst use Eternal water heater will typically produce a condensate that is considered slightly acidic with a Ph content of approximately 3 4 Install a neutralizing lter if required by authority having jurisdiction...

Страница 14: ...l appliances in the enclosed area When combustion air is supplied from inside the building each opening should give a minimum free area of one square inch per 3 750 Btu hour of the total input ratings of all appliances in the enclosed area These openings should never be less than 40 sq in The minimum required inside air volume should be 50 cu ft per every 3 750 Btu hour Combustion Air Supply Air s...

Страница 15: ...s Exhaust Ventilation Do not have the ue terminal pointing toward an opening into the building Do not locate your heater in a pit or any location where gas and water can accumulate WARNING Do not install the water heater where water debris or ammable vapors may get into the ue terminal This may cause damage to the water heater WARNING Min 4ft Natural gas in high altitude might contain less heating...

Страница 16: ... A119 5 NFPA 501D Mounting Steps 1 Install mounting brackets with 6 screws on top and bottom back of the unit Philips Head Screws 1 4 x3 8 Philips Head Screws 1 4 x3 8 Wall mount the water heater with the brackets provided The water heater must be properly supported if the wall is not strong enough be sure to reinforce the wall The unit must be mounted on a vertical wall and level to the ground Wa...

Страница 17: ...l It cannot be connected to existing vent piping or chimney The total vertical and horizontal runs cannot exceed the maximum length with a maximum number of 90 degree elbows as speci ed in the table of page 22 Eternal can be vented straight up and a horizontal section is not required for vertical terminations Horizontal Termination Side Wall Direct Vent Side Wall Concentric Vent Side Wall Power Ve...

Страница 18: ...ator provided by the gas supplier for 13 w c maximum pressure Contact the local propane gas supplier for recommended sizing of piping tanks and 100 lockup gas regulator NOTE LP conversion kit LP Orifice PROPANE GAS Label must be ordered from Grand Hall USA Conversion can only be completed by a qualified professional NOTE To convert a Unit from Natural gas to LP or LP to Natural gas Clearances From...

Страница 19: ...tuds If the framing is not standard or installing on an uneven surface fasten 3 4 plywood to the stud wall and then attach the wall bracket 2 1 4 x1 Screws 6 Philips Head Screws 1 4 x3 8 Philips Head Screws 1 4 x3 8 Hang the unit on the mounted wall bracket and secure bottom of the unit to the wall with included wall anchors and wall screws 3 1 4 x1 Screws The water heater must be properly support...

Страница 20: ... unit must be elevated at least 6 off the floor This mounting clearance provides access for clearing any possible debris or accumulated water seepage that can occur below the unit Install the unit on Eternal Water Heater Stand P N 314080136 that raises the unit at least 6 above the floor Standing Installation Floor Standing Earthquake Proo ng Water Heater Stand For Commercial Food Service 6 min Fa...

Страница 21: ...installation of the vent pipe system is mandatory for the safe and ef cient operation of this water heater and is an important factor in the life of the unit WARNING The appliance must be vented separately from all other appliances The following type of non metallic vent can be used Vent Pipe Material PVC schedule 40 ASTM D1785 CPVC schedule 40 ASTM D2846 PVC DWV ANSI ASTM D2665 ABS schedule 40 AS...

Страница 22: ...ximum allowable length for each elbow used as follows 45 degree elbow Deduct 3 feet 90 degree elbow Deduct 5 feet The intake vent length can be of equal length or less there is no balancing requirement between intake and exhaust Some termination is considered as a type of elbow correct deduction should be applied Such as a turn down 90 or an open T termination is considered 1x90 elbow and a candyc...

Страница 23: ...length with a maximum number of 90 degree elbows as speci ed in the table of page 22 Eternal can be vented straight up and a horizontal section is not required for vertical terminations WARNING An open tee is optional but recommended to use as a termination to alleviate and prevent back pressure in the venting system The Grand Hall approved concentric kit is a unique pipe in pipe venting system de...

Страница 24: ...e vent pipe or ttings with mortar or silicone caulk as shown above Complete the rest of the vent pipe installation to the water heater s vent connector tting on the blower outlet If necessary support horizontal run as previously mentioned WARNING The Grand Hall approved concentric kit is a unique pipe in pipe venting system designed for termination Do not try to replicate or make your own For more...

Страница 25: ...or operable window or gravity air inlet into any building 3 above any forced air inlet within 10 Maintain the following clearances to any opening in any building From the unit 4 below 4 horizontally from or 1 above any door operable window or gravity air inlet into any building 3 above any forced air inlet within 10 For outdoor installation we recommend using the outdoor venting cap for rain prote...

Страница 26: ...tant so as to avoid recirculation of flue gases Concentric Multivent Termination Horizontal Terminations Vertical Terminations Multiple unit Termination Vertical Terminations Horizontal Terminations The Grand Hall approved concentric kit is a unique pipe in pipe venting system designed for termination Do not try to replicate or make your own For more information please refer to Concentric Vent Kit...

Страница 27: ...lean air can be supplied for combustion air It may be necessary to use an air filter For more detial on how to setup power vent for intake please refer to Venting Specification section in Operation Manual The direct venting system can use the same piping material for air intake as the power venting system It s not required for intake and exhaust vent to be in same direction The termination can be ...

Страница 28: ...tantial property and or warranty will be voided Do not use concentric kit which are not approved by Grand Hall Do not operate the appliance with the rain cap removed or recirculation of combustion byproducts may occur Water may also collect inside the larger combustion air pipe and ow to the burner enclosure Do not make alternation to the approved Grand Hall concentric kit such as length downsize ...

Страница 29: ...H Clearance to each side of center line extended above meter regulator assembly 3 feet within a height 15 feet above the meter regulator assembly I Clearance to service regulator vent outlet 3 feet J Clearance to non mechanical air supply inlet to the building or the combustion air inlet to any other appliance 4 feet below or to side of opening 1 foot above opening 1 foot 3 feet K Clearance to a m...

Страница 30: ...292 265 1 1 4 2350 1620 1300 1110 985 892 821 763 716 677 600 543 1 1 2 3520 2420 1940 1660 1480 1340 1230 1140 1070 1010 899 814 2 6790 4660 3750 3210 2840 2570 2370 2200 2070 1950 1730 1570 Based on 0 60 specific gravity for natural gas at 3 0 W C pressure drop 8 0 W C or greater supply pressure DOE standard is 1000 BTU per cubic ft of natural gas NATURAL GAS SUPPLY PIPING Pipe Cubic Feet of Nat...

Страница 31: ...he type of fuel If there is a con ict or doubt on the setup remove the gas valve and check for the propane ori ce Failure to ensure proper setup could result in severe personal injury death or substantial property damage WARNING Gas Valve LP label Nut LP conversion kit LP Orifice PROPANE GAS Label must be ordered from Grand Hall USA Conversion can only be completed by a qualified professional NOTE...

Страница 32: ...he knob to the right The drain valve is on the lower leftside of the water heater Open the cold water supply valve to the water heater To ensure complete lling of the tank allow air to purge by opening the nearest hot water faucet Allow water to run until a constant ow is obtained Check all new water piping for leaks Repair as needed Eternal is designed for full ow with low pressure loss Without o...

Страница 33: ...ely flowing from the drain piping after the system has been installed Condensate will begin owing out of the water heater within 15 minutes after operation has started Condensate piping to floor drain Condensate piping to Condensate pump Vent stops vacuum air lock and clean out for future if condensate line is clogged Eternal Condensate Neutralizer Condensate Pump Relief Valve Discharge Line To en...

Страница 34: ...on main controller board like gure below How IPC Operates The temperature pressure relief valve should be manually opened once a year No one should be in front of or around the outlet of the temperature pressure relief valve discharge line when in use If after manually opening the valve and it fails to completely reset and continues to release water immediately close the cold water inlet to the wa...

Страница 35: ...Grounding and Surges Label all wires prior to disconnection when servicing controls Wiring error can cause improper and dangerous operation Verify proper operation after servicing A means for switching off the 120 VAC power supply must be provided Wire the heater exactly as shown in the wiring diagram Check all new water piping for leaks Repair as needed The water heater requires an electrical pow...

Страница 36: ...ing 5 screws 3 Open one of the pre cut holes on either side panels of the unit and insert the hole plug 1 Open the main controller PCB cover by removing 1 screw 2 Run wire from the PCB to where the remote display is to be mounted through the hole plug 3 Attach wiring to the PCB by loosening 2 screws on the main controller Precut Hole Note Max 100ft run Hole Plug Remote Controller ...

Страница 37: ...wall and insert Wall Anchors Connect wiring to the back of the remote display by loosening 2 screws Secure the Remote controller to the Wall Anchors using the included Mounting Screw 2 pcs and replace the cover to hide the mounting hardware Remote Display Mounting Instructions 1 2 3 4 5 6 Template Configuring Multiple Remote Controllers Remote Controller Selection Switch Setting Layout Kitchen Bat...

Страница 38: ...m allows remaining units to work when a units breaks down Synchronized temperature control changes settings on all units from any unit Up to 8 Eternals can be networked Automated staged firing allows one or all linked units to fire up as needed Automated load balancing distributes the work across necessary units evenly UL1998 Certified Easy connection MCU Wire Female Termination Wire F1 Blue Male ...

Страница 39: ...t Identification Number Connect MCU Wire to CN6 of main controller of each unit 5 MCU Installation Connect MCU Wire to next MCU Wire 7 Connect Male Termination Wire M1 to MCU Wire at the last unit 8 When multiple units are installed the MCU wire Y wire with 3 connectors 1 CANBUS to main controller 2 short female termination 3 long male termination must be connected that the short female terminatio...

Страница 40: ... the unit can be on as low as 2A capacity However when multiple Eternals are used together the power supply requirement is significantly increased Proper power supply design is important to ensure the safe operation of Eternal When multiple units are used the electrical supply needs to increase in capacity Calculate by the below formula of units installed X 2A per unit Total Amperage For example f...

Страница 41: ...llation should be engineered properly and compliant to Local and State Codes Pump control such as aquastat or timer and aquastat must be used in recirculation application or short cycle may occur and cause premature failure Failure to comply with this warning will void warranty WARNING Recirculation with 2 Units ...

Страница 42: ...re Failure to comply with this warning will void warranty NOTE For restaurants or applications where rapid on off hot water usage is frequent i e handheld sprays Eternal recommends the use of a recirculation pump with storage as buffer This recommendation is designed to prime the units for rapid usage as the burner will not ignite during rapid on off usage due to the intermittent nature of the app...

Страница 43: ...bove diagram the farthest unit might have no ow or very scarce ow NOTE This concept can be applied when two or more heaters are used in parallel the inlet and outlet piping should be arranged in a way that an equal flow is received from each heater under all demand conditions With a reverse return system it is easy to get parallel flow The unit having its inlet closest to the cold water supply is ...

Страница 44: ...information regarding GU145S or more than 4 units application please contact our service information center Note EACH JOB SHOULD BE SIZED ACCORDING TO THE DESIRE OF DEMAND Pump must be controlled by aquastat set at least 20 F below eternal s setting temperature To ensure faster recovery speed S model is recommended rather than using M model to eliminate staging delay NOTICE Recovery Pump When usin...

Страница 45: ...e To ensure complete lling of the heat exchanger tank allow air to exit by opening the nearest hot water faucet Allow water to run until a constant ow is obtained This will let air out of the water heater and piping Open a hot water tap to check that water will ow to that tap Then close the hot water tap Fully open the manual shut off gas valve Plug in the 120 VAC 60Hz power supply to the water he...

Страница 46: ...temperature setting can be limited by DIP switches This manual setting overrides adjustable temperature settings on the front panel Please call Grand Hall USA for DIP switch setting instructions if needed Water Temperature Time to Produce a Serious Burn 120 F More than 5 minutes 125 F 1 5 to 2 minutes 130 F About 30 seconds 135 F About 10 seconds 140 F Less than 5 seconds 145 F Less than 3 seconds...

Страница 47: ...y button with the unit ON The priority indicator should light and now temperature can only be adjusted at the remote control control cannot be transferred while burner is ON 1 2 3 4 5 NOTE The maximum water temperature setting can be limited by DIP switches This manual setting overrides remote control temperature setting Figure 2 Figure 1 Priority Button Alternates the control of temperature selec...

Страница 48: ...spection A visual inspection should be made on the venting system at least once a year Clean Up The ue outlet and the air intake hole on the top of the water heater should be checked Clean as needed to prevent the entry of water insects rodents or other foreign materials such as fallen leaves and dust that could cause blockages Do not obstruct the ow of combustion air and exhaust air ow Water Stra...

Страница 49: ...ersion for CPU B SB 01 CPU B running version 1 E1 through E9 E2 13 Error 2 in history is code 13 Press the D button when the unit is in standby mode burner off Diagnostic Content Example Explanation Outlet Temperature O O 125 Outlet is 125 F Heat Exchanger Temperature H H 135 Heat exchanger is 135 F Inlet Temperature I I 65 Inlet is 65 F Air Temperature A A 60 Air is 60 F Fan Motor RPM P P5800 Fan...

Страница 50: ...50 DIAGNOSTICS Before calling for service review the following diagnostic steps rst for saving time and money ...

Страница 51: ...own operation continuously If an error occurs a message will flash on the digital monitor of the front panel This assists with diagnosing the error and may enable you to overcome a problem without a service call Please quote the code displayed when inquiring about service ...

Страница 52: ...ap OFF then ON again If this does not clear the Error Message try pushing the ON OFF button OFF then ON again If the Error Message still remains contact our service center or your nearest service agent and arrange for a service call 1 866 946 1096 8am 4pm CST Monday through Friday 52 DIAGNOSTICS ...

Страница 53: ...RNING Recommended Combustion Levels for low re Setting values O2 CO2 Model Gas type Natural gas Propane gas O2 CO2 O2 CO2 GU145 S 3 0 6 5 8 0 10 0 3 7 6 9 9 0 11 0 GU195 S M 3 0 6 5 8 0 10 0 3 7 6 9 9 0 11 0 Table 1 53 How To Check Gas Combustion EC Adapter Cap Analyzer Probe Gas Analyzer Gas Air Ratio Valve Inlet pressure port Adjustment screw A Tool T40 trox bit Manifold pressure port NOTE Using...

Страница 54: ... the unit and let it take itself through at least 1 cycle on standby re for boot up diagnostics Check the ame through the sight glass which should be stable with a regular ame distribution Reinstall the ue stack cap when nished testing Only make small adjustments of the adjusting screw maximum 1 8 turns at a time when setting O2 CO2 Ensure that the analyzing probe has a gas tight seal in the sampl...

Страница 55: ...55 Wiring and Connection Diagram Wiring Diagram MODEL GU145 S 508 11 12 21 22 1145 S GU195 S 508 11 12 21 22 1195 S ...

Страница 56: ...56 Wiring and Connection Diagram Wiring Diagram MODEL GU195 M 508 11 12 21 22 1195 M ...

Страница 57: ...n 30 days of purchasing the product at www eternalwaterheater com Registration constitutes proof of purchase but registration is not required in order to validate this warranty Limitation of Damages Grand Hall s entire liability for any defective product shall in no event exceed the purchase price for the defective product This limitation applies even if Grand Hall cannot or does not repair or rep...

Страница 58: ...t or product What s not covered by the Limited Labor Allowance Not covered Corrections due to failure to follow installation instructions in the Manual resetable error codes not caused by a component or product failure adjustments made on a product or component that should have been checked at time of installation such as but not limited to insuf cient or excessive gas pressure repair or replaceme...

Страница 59: ...er 140 F Residential recirculation is allowed and does not impact the heat exchanger warranty if an Internal Pump Control IPC or external aquastat or timer and aquastat controls are used Commercial Application Product installed for commercial or multi family domestic hot water supply space heating applications recovery of storage tank applications continuous recirculation with at least aquastat co...

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