Eternal GU145 Installation And Operation Manual
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Eternal GU145 Installation And Operation Manual

Advanced hybrid water heater
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See also: Operating Manual , Operation & Installation Manual
Installation ● Operation Manual
Natural Gas (NG) - Factory Default
Liquid Propane Gas (LPG) - Optional Ori ce
Model GU145 (S) / 508(11,12,21,22)1145 (S)
Model GU195 (S) / 508(11,12,21,22)1195 (S)
Model GU195 (M) / 508(11,12,21,22)1195 (M)
C
Call us fi rst if you have any questions with this product. We can help you with questions about assembly and
Water Heater operation or if there are damaged or missing parts when you unpack this unit from the shipping
box. Please call before returning to the store.
● Only specially trained and authorized personnel are permitted to service this water heater.
●
NOTE TO ASSEMBLER / INSTALLER:
Leave this manual with the consumer.
●
NOTE TO CONSUMER:
Keep this manual for future reference.
●
RECORD YOUR SERIAL #________________
(see silver CSA label on Gas Water Heater)
!
Read this Operator's Manual carefully and be sure your Water Heater is properly assembled, installed and
maintained. Failure to follow these instructions exactly could result in a  re or 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.
!
California Proposition 65 lists chemical substances known to the state to cause cancer, birth defects, death,
serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel
combustion (gas, oil) or components of the product itself.
!
Only a licensed professional can install Eternal units for safety and code compliance. Venting and plumbing
codes can vary by location. Installation instructions and all applicable codes must be followed or property
damage, severe injury, or death can result. Failure to use a licensed plumber or contractor, follow venting,
plumbing, and building codes; or follow installation instructions may be unlawful and will void the product
warranty. Grand Hall is not responsible for any costs incurred for repairing any problems resulting from failure to
follow installation instructions or applicable codes.
Service Information Center:
1-866-946-1096
7am-7pm CST, Monday through Friday
IMPORTANT:
WARNING
WARNING
WARNING
1
!
!
157140081 Date 2010/6/17
!

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Summary of Contents for Eternal GU145

  • Page 1 (gas, oil) or components of the product itself. WARNING Only a licensed professional can install Eternal units for safety and code compliance. Venting and plumbing codes can vary by location. Installation instructions and all applicable codes must be followed or property damage, severe injury, or death can result.

  • Page 2: Table Of Contents

    Electrical Connection Optional Remote Controller Installation P33~34 MCU Installation P35~37 Plumbing Diagrams P38~42 Eternal Hybrid Water Heater Installation Checklist Operating Instructions How To Use The Front Control Interface How To Use the Remote Controller Maintenance and Service Diagnostics P48~50 Checking Gas Combustion Specifications...
  • Page 3 Included Accessories Optional Accessories 0.75mm*2C Wire Hole Plug : 1pcs Self Tapping Screw Cap : 2pcs 5/32" x 5/8" : 2pcs Philips Head Screw M8x15 : 4pcs...
  • Page 4 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...
  • Page 5 Dimensions - GU145(S) / 508(11,12,21,22)1145(S) GU195(S,M) / 508(11,12,21,22)1195(S,M)
  • Page 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)
  • Page 7 Parts Diagram for Model GU145(S) / 508(11,12,21,22)1145(S)
  • Page 8 Parts List for Model GU145(S) / 508(11,12,21,22)1145(S) DESCRIPTION Panel, Front Assembly Panel, Top / Rear Assembly Panel, Rear Panel, Left Assembly Panel, Right Assembly (GU145(S)) Panel, Bottom Mounting Bracket Wall Bracket Controller / Front T&P Relief Valve (Cash Acme) Vent Collar...
  • Page 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)

  • Page 10: Parts List Gu195(S,M) / 508(11,12,21,22)1195(S,M)

    Parts List for Model GU195(S,M) / 508(11,12,21,22)1195(S,M) DESCRIPTION Panel, Front Assembly Panel, Top / Rear Assembly Panel, Rear Panel, Left Assembly Panel, Right Assembly (GU195(S,M)) Panel, Bottom Mounting Bracket Wall Bracket Controller / Front T&P Relief Valve (Cash Acme) Vent Collar Vent Collar Packing Rubber Foot Drain Valve Assembly...

  • Page 11: Pre-Installation Instructions For Your Safety P11

    Pre-Installation Instructions for Your Safety WARNING WARNING If you do not follow these instructions exactly, a  re or explosion could result causing property damage, personal injury or loss of life. Installation Codes □ The installation must conform with local codes or, in the absence of local codes, with National Fuel Gas Code, ANSI Z223.1/NFPA 54.

  • Page 12: Installation Preparation P12

    Installation Preparation Unpacking Your Eternal Water Heater □ Unpack the unit carefully and make sure that all accessories are put aside so that they will not be lost. ● Operator's manual ● Warranty Registration Card ● Included Parts □ Inspect the water heater for possible shipping damages.

  • Page 13: Condensate Disposal P13

    Figure 2. NOTICE Eternal water heater will typically produce a condensate that is considered slightly acidic with a Ph content approximately 3-4. Install a neutralizing  lter if required by authority having jurisdiction (See  gure 2). Direct to drain from the unit.
  • Page 14 Combustion Air Supply □ GU145(S) / GU195(S,M) can be used as either Power-Vent or Direct-Vent appliance. When used as a Power- Vent appliance, the water heater should be located in an area where enough air is available for proper combustion and ventilation. Follow the latest edition of ANSI Z223.1 and any of your local codes that are applicable.
  • Page 15 Outdoor Installation Clearances From top of water heater 24 inches From back of unit 0.6 inch From front of unit 24 inches From left side of unit (gas piping side) 6 inches From side wall  ue or vent connector in any direction 6 inches From right side of unit 2 inches If this unit is installed under an overhang, there must be a 24"...

  • Page 16: Mobile Home Installation P16

    Eternal water heater must be used as sealed combustion type (Direct Vent) where all the combustion air is supplied from the outdoors through the air intake and all combusted gas by products are vented directly to the outside by means of the vent termination.
  • Page 17 Wall Mounting WARNING 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. Mounting Steps 1. Install mounting brackets with 6 screws on top and bottom back of the unit. Philips Head Screws 1/4"x3/8"...
  • Page 18 M8x15x4pcs CAUTION If local codes require the water heater to be raised 18" above  oor, installing GU145(S) / GU195(S,M) on the optional Eternal Water Heater Stand (P/N 314080136) will satisfy code. In conjunction, the unit on stand raises the FVIR compliant igniter and burner at least 18" off the  oor. Alternatively, raising the unit at least 6" off the  oor...

  • Page 19: Venting Intake & Exhaust Material P19

    The supplied vent connectors are certi ed as part of the water heater. WARNING If the Eternal combustion air inlet is located in an area likely to cause or contain contamination, the combustion air must be repiped and terminated at another location. Contaminated combustion air will damage the unit and its...

  • Page 20: Direct And Power Venting P20

    Direct And Power Venting Direct Vent □ GU145(S) / GU195(S,M) is factory configured as sealed combustion unit with dedicated intake and exhaust connections. □ When installed as a Direct Vent appliance, all combustion air is drawn directly from outside. □...
  • Page 21 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 20. □ Eternal can be vented straight up and horizontal section is not required for vertical terminations.
  • Page 22 Horizontal Termination Below diagrams are examples of vertical terminations. □ □ Side Wall (Direct Vent) Side Wall (Power Vent) □ Side Wall (Concentric Vent) WARNING □ Once the vent terminal location has been determined, make a hole through the exterior wall to accommodate the vent pipe.

  • Page 23: Multiple Units Termination P23

    Multiple Units Termination Multiple unit Termination □ □ Vertical Terminations Horizontal Terminations Concentric Multivent Termination When two or more direct vent units are vented near each other, each units must be individually vented, but next unit vent ternination must be at least 12 inches away from the first unit. It is important that vent terminatiion to avoid recirculation of flue gases.

  • Page 24: Common Venting Installation

    Common Vent Installation Applicable Model GU195 (M) / 508 (11,12,21,22)1195 (M) Systems In MCU with common vent systems, GU195M models are used and being a condensing water heater, combustion gases are discharged at a very low temperature. It is therefore necessary for the vent system to be perfectly impermeable to combustion condensate and to be made of corrosion resistant materials.
  • Page 25 Concentric Vent Kit WARNING □ 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. Failure to follow this warning could result in product damage or improper operation, personal injury, or death.

  • Page 26: Vent Pipe Installation & Terminator Position P26

    Vent Pipe Installation & Terminator Position US Installations Description Canadian Installations Other than Direct Vent Direct Vent Clearance above grade, veranda, 1 foot 1 foot 1 foot porch, deck, or balcony Clearance to window or door that 4 feet below or to side of opening; 1 foot 3 feet may be opened...

  • Page 27: Gas Supply Piping P27

    Gas Supply Piping NOTICE □ This unit needs a manual gas control valve (shut-off valve) that must be connected to the unit before the gas line. □ Check the gas inlet pressure and the type of gas matching the rating plate located on your water heater. Also check to make sure your gas meter is capable of supplying suf...

  • Page 28: Lp Conversion P28

    LP Conversion NOTICE Contact the local propane gas supplier for recommended sizing of piping, tanks and 100% lockup gas regulator. □ Adjust the propane supply regulator provided by the gas supplier for 13" w.c. maximum pressure. How to convert to LP 1.

  • Page 29: Water Supply Connection P29

    When installing multiple units to supply higher volumes of hot water either in residential applications or in commercial applications, the number of Eternal water heaters required and the header pipe sizing needs to be properly sized to meet the total hot water demand.

  • Page 30: Condensate Piping P30

    Condensate piping to floor drain Condensate piping to Condensate pump Relief Valve Vent Discharge Line Vent stops vacuum air lock, and clean out for future if condensate line is clogged. Condensate Pump Relief Valve Vent Discharge Line Eternal Condensate Neutralizer Eternal Condensate Neutralizer...
  • Page 31 Temperature and Pressure Relief Valve The following 3/4", maximum 150psi valves are approved by CSA for use with GU145(S) / GU195(S,M) : - Cash Acme NCLX-5L CAUTION □ The temperature-pressure relief valve should be manually opened once a year. □...

  • Page 32: Electrical Connection P32

    Electrical Connection Installation Codes: Follow the requirements of the local authority having jurisdiction. In the absence of such requirements, follow the latest edition of the National Electrical Code ANSI/NFPA 70. Grounding and Surges □ Do not plug electrical power to the unit until all plumbing and gas piping is complete and the water heater has been ...

  • Page 33: Optional Remote Controller Installation P33~34

    Optional Remote Controller Installation Pre-Installation Preparation 1. Turn off the unit and unplug power cord from wall socket. 2. Remove front panel by loosening 5 screws. 3. Open one of the pre-cut holes on either side panels of the unit and insert the hole plug. Precut Hole Wiring Instructions 1.
  • Page 34 Optional Remote Controller Installation Configuring Multiple Remote Controllers Rear Side Remote Controller Selection Switch Setting Layout 1 : Left 2 : Left Kitchen 3 : N/A 4 : N/A 1 : Right 2 : Left Bathroom 1 3 : Left 4 : N/A 1 : Right 2 : Left...

  • Page 35: Mcu Installation P35~37

    MCU Installation MCU Kit Components MCU Wire Female Termination Wire Male Termination Wire Specifications and Features Applicable Models : GU195(M) / 508(11,12,21,22)1195(M) Description: MCU kit allows multiple units to be linked together in parallel manifold configuration. By doing so, Etermal can be suitable for large commercial projects.
  • Page 36 MCU Installation MCU Installation With all taps closed and unit off, unplug the power cord of the unit from the power outlet. Make sure dip switch #4 to ON position (Group 1, No.4) When this switch is on, CAN(Control Area Network) engine is enable and all units will communicate with each other. Make sure dip switch #6, 7, 8 OFF position (Group 2, No.
  • Page 37 Power Supply Schematic Diagram Operating as a single unit, Eternal consumes less than 1A current, and the power supplied to unit can be on as low as 2A capacity. However, when multiple Eternals are used together, power supply requirement is significantly increased.
  • Page 38 Recirculation System with an Eternal Water Heater Single Eternal with Storage Back up These diagrams are for reference as basic guides. Each installation should be engineered properly and compliant to Local and State Codes.
  • Page 39 Recirculation with 2 Units manifold Single Eternal with pre-heater, i.e. Solar These diagrams are for reference as basic guides. Each installation should be engineered properly and compliant to Local and State Codes.
  • Page 40 Recirculation System with Multiple Units Connection Multiple Units Connection with Storage Back Up These diagrams are for reference as basic guides. Each installation should be engineered properly and compliant to Local and State Codes.
  • Page 41 System for rapid ON/OFF hot water usage Note 1 : Use Aquastat pump and set at 20°F below Eternal temperature setting. If unit is not controlling pump by internal relay. Note 2 : Size the pump to provide a minimum of 5.0GPM through the system at 10ft of head plus piping losses.
  • Page 42 Plumbing System for Multiple Unit Applications NOTICE 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 reverse return system it is easy to get parallel flow.

  • Page 43: Eternal Hybrid Water Heater Installation Checklist P43

    ETERNAL HYBRID WATER HEATER INSTALLATION CHECKLIST Location □ ● Is the water heater located close to wall for easy exhaust and the main use of hot water ?........□ ● Has a drain pan been installed and piped to a free  owing drain ?.................

  • Page 44: Operating Instructions P44

    Operating Instructions Before Starting The System □ This water heater does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner manually. □ Before operating, make sure that a gas leak is not evident by smelling the area around the unit. Be sure to smell next to the ...

  • Page 45: How To Use The Front Control Interface P45

    How To Use The Front Control Interface To switch the water heater ON: From OFF condition Press the Power Button. □ The temperature selected will be indicated on the Digital Monitor. □ The ON Indicator will light up. When running the water by opening the water tap, the water heater will start the burner automatically and the Digital Monitor will show the Burner ON indicator.

  • Page 46: How To Use The Remote Controller P46

    How To Use the Remote Controller LCD Monitor: Indicates water temperature and shows error code in the event of an error. Priority Button: Alternates the control of temperature selection between front and remote Temperature Setting Button: controller. Used to set water temperature. Power Button: Turns the heater ON or OFF.

  • Page 47: Maintenance And Service P47

    Maintenance and Service WARNING Turn off the electrical power supply, the manual gas control valve, and the manual water control valve before servicing. SYSTEMS AND PARTS CHECK □ The unit should be checked once a year or as necessary by a certified and trained technician. If repairs are needed, the repairs should be done by a certi...

  • Page 48: Diagnostics

    DIAGNOSTICS Before calling for service, review the following diagnostic steps  rst for saving time and money!
  • Page 49 DIAGNOSTICS Self Monitoring This unit has the ability to check its 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.
  • Page 50 DIAGNOSTICS NOTE: In all cases you may be able to clear the Error Message simply by turning the hot water tap 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.
  • Page 51 Manifold pressure: GU145(S) : 0.1" min, 1.7" max. GU195(S,M) : 0.1" min, 3.2" max. Supply pressure: GU145(S) / GU195(S,M) : NG3.5 - 10.5", LP8.0 - 14" w.c. Adjustment Screw for Maximum Pressure Adjustment Screw for Minimum Pressure Gas manifold pressure...

  • Page 52: Wiring And Connection Diagram P52~53

    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)
  • Page 53 Wiring and Connection Diagram Wiring Diagram MODEL : GU195(M) / 508(11,12,21,22)1195(M)

  • Page 54: Grand Hall Limited Warranty P54

    Grand Hall USA, Inc. does not support the sale of Eternal Hybrid Water Heaters to consumers over the Internet; including but not limited to auction sites. Such sales are strictly prohibited and no warranty is offered on Eternal Hybrid Water Heaters purchased over the Internet.

This manual is also suitable for:

Gu145(s)Gu195(s)Gu195(m)

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