Eternal GU32 Operator's Manual
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Eternal GU32 Operator's Manual

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Natural Gas (NG)-Factory Default
Liquid Propane Gas (LPG)-Optional Conversion
Model
GU32 / 501(11,12,21,22)1321
Model
GU28 / 501(11,12,21,22)1281 (Optional)
Model
GU26 / 501(11,12,21,22)1261
Model
GU20 / 501(11,12,21,22)1201 (Optional)
Service Information Center:
Call us first 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.
1- 866- 946- 1096
8am-4:30pm CST, Monday through
IMPORTANT:
Ÿ
Only specially trained and authorized
personnel are permitted to service this
water heater.
Ÿ
NOTE TO ASSEMBLER / INSTALLER:
Leave this manual with the consumer.
Ÿ
NOTE TO CONSUMER:
Keep this manual for future reference.
Ÿ
RECORD YOUR SERIAL # __________________
see silver CSA label on Gas Water Heater
(
Friday
)
OPERATOR'S MANUAL
WARNING
!
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 fire or explosion, serious
bodily injury and/or property damage.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
WARNING
!
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
1.
Do not touch any electrical switch; do not use
2.
any phone in your building.
Immediately call your gas supplier f rom a
3.
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier, call the fire
4.
department.
WARNING
!
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.
1
C
!
!
!
157020132 Date 2009/8/5

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Summary of Contents for Eternal GU32

  • Page 1: Primary Safety Warning

    OPERATOR'S MANUAL Natural Gas (NG)-Factory Default Liquid Propane Gas (LPG)-Optional Conversion Model GU32 / 501(11,12,21,22)1321 Model GU28 / 501(11,12,21,22)1281 (Optional) Model GU26 / 501(11,12,21,22)1261 Model GU20 / 501(11,12,21,22)1201 (Optional) WARNING Service Information Center: Read this Operator's Manual carefully and be sure...

  • Page 2: Table Of Contents

    Table of Contents WARNING Primary Safety Warning.......1-3 Pre-Installation Instructions.......3 If you detect abnormal combustion or ab- Parts Diagram and List for GU28/GU32..4-5 normal odors, or an earthquake, tornado or Parts Diagram and List for GU20/GU26..6-7 fire: Operating Instructions.........8-9 1. Turn off the hot water supply at the faucet.

  • Page 3: Pre-Installation Instructions

    Pre-Installation Instructions for Your Safety TO TURN OFF GAS TO WATER HEATER WARNING Turn off all electrical power to the water heater if ser- vice is to be performed. If you do not follow these instructions exactly, Turn the manual gas valve located on the outside of the a fire or explosion could result causing property unit clockwise to the off position.

  • Page 4: Parts Diagram And List For Gu28/Gu32

    Parts Diagrams for Model GU28,32 / 501(11,12,21,22)1(28,32)1...
  • Page 5 Parts List for Model GU28,32 / 501(11,12,21,22)1(28,32)1 DESCRIPTION Part # Panel, Front 302040001 Panel, Rear 302040002 Panel, Left 302040003 Panel, Right 302040004 Panel, Top/Front 301040005 Panel, Top/Rear 301040006 Panel, Bottom 151010009 Control Panel Assembly 301080170 Temperature and Pressure Relief Valve 194010281 Exhaust Collar Assembly 301070230...

  • Page 6: Parts Diagram And List For Gu20/Gu26

    Parts Diagrams for Model GU20,26 / 501(11,12,21,22)1(20,26)1...
  • Page 7 Parts List for Model GU20,26 / 501(11,12,21,22)1(20,26)1 DESCRIPTION Part # Panel, Front 301040001 Panel, Rear 301040002 Panel, Left 301040003 Panel, Right 301040004 Panel, Top/Front 301040005 Panel, Top/Rear 301040006 Panel, Bottom 151010009 Control Panel Assembly 301080170 Temperature and Pressure Relief Valve 194010281 Exhaust Collar Assembly 301070230...

  • Page 8: Operating Instructions

    Operating Instructions NORMAL OPERATION STARTING THE SYSTEM To turn on your water heater For your safety, read before operating Open a hot water tap. This water heater does not have a pilot. It is equipped with an ignition device which automatically lights the Burner will ignite;...
  • Page 9 How To Use The Front Control Interface To switch the water heater ON: from OFF condition DANGER Press the Power Button. -The temperature selected will be indicated on the Digital Monitor. Hot water heater temperature over 125 F can -The ON Indicator will light up. cause severe burns instantly or death from When running the water by opening the water tap, scalding.

  • Page 10: Maintenance And Service

    Sediment Build-up: Unlike a typical storage tank, Maintenance and Service Maintenance and Service this heater has a self cleaning system initiated by the flow of water. Build up of sediment in faucet aerators, shower heads and screens could impair WARNING water flow and cause the water heater to deliver less than its full output, or to shut down completely.

  • Page 11: Troubleshooting

    Troubleshooting TROUBLESHOOTING 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 12: Specifications

    Eternal Hybrid Water Heater Technical Specifications Model Name GU20 (Optional) GU26 GU28 (Optional) GU32 Model Number (CSA) 501(11,12,21,22)1201 501(11,12,21,22)1261 501(11,12,21,22)1281 501(11,12,21,22)1321 Installation Indoor or Outdoor Type Flue system Forced Exhaust Power Vent Operation With or Without Remote Controls Ignition Direct Electronic Ignition and Automatic Flame Sensing...
  • Page 13 35 feet with one 90 elbow. If more elbows are re- are permitted to service this water heater. quired the venting distance must be reduced 5 feet Unpacking Your Eternal Water Heater for every 90 elbow. Unpack the unit carefully and make sure that all...
  • Page 14 T&P Valve and Exhaust Collar Installation Loosen 2 screws holding the Front Panel at the bottom, push the panel down and towards yourself to remove. Take the accessory box out of the front of the unit. This box contains: T&P Relief Valve x 1 Exhaust Collar x 1 O Ring (G95) x 1 Mesh Screen x 1...
  • Page 15 T&P Valve and Exhaust Collar Installation Install the Exhaust Collar and secure with M4 screws. Install the T&P Relief Valve on the side of unit. Make sure the T&P Relief is secured to prevent water leak. Vent Cap Installation (For Outdoor Installation) Install the Vent Cap on the Exhaust Top.
  • Page 16 Outdoor Installation STANDING INSTALLATION This unit is to be installed on a floor. Do not install the unit standing directly on combus- tible surface. OUTDOOR INSTALLATION Installation Codes : Follow all local codes, or in the absence of local codes, follow the codes for installation of gas burning appliances;...
  • Page 17 Follow the latest area. edition of ANSI Z223.1 and any your local codes that are applicable. Eternal is a Category III vented appliance and manufacturer's ventilation specifications should be followed. In general these requirements specify that if the unit is installed in a confined space, there must be per- manent air supply openings.
  • Page 18 Mounting Procedure for Commercial / Foodservice Description: In compliance with NSF-5 standard,water heaters should be mounted in a way that seepage cannot accumulate under the unit. Grand Hall recommends either applying watertight caulking along the bottom edge of the unit with the floor surface, or install Eter- nal in conjunction with a water heater stand or plat- form that would raise the unit at least 6”off the floor.
  • Page 19 Condensate Drain Installation CONDENSATE DRAIN REQUIREMENTS VERTICAL TERMINATION HORIZONTAL TERMINATION Condensate formation can occur in high efficiency power vent appliances. To prevent condensate damage, a conden- sate drain must be installed under the following conditions: All vertical terminating vent installations. Horizontal terminating vent installations if a vertical rise in the vent system exceeds 5 ft.
  • Page 20 Exhaust Venting Installation EXHAUST VENTING INSTALLATION VENTING CONNECTION Exhaust Fans and Ventilation The vent system must be gas tight. All seams and The water heater is equipped with a combustible air joints must be sealed with silicone sealant or adhe- detector to measure whether there is enough air for sive tape having a minimum temperature rating of proper combustion.
  • Page 21 VENT PIPE MATERIAL Cut pipe ends squarely removing all burrs and dirt. Eternal Hybrid Water Heater is a gas burning appliance with fan-assisted exhaust. The appliance must be vented Dry fit pipe and fittings to be connected for proper fit.
  • Page 22 Vent Pipe Installation & Terminator Position EXHAUST VENT TERMINATOR POSITION A r e a D e s c r i p t i o n s O t h e r t h a n D i r e c t V e n t C le a r a n c e a b o v e g r a d e , 1 f o o t v e r a n d a , p o r c h , d e c k , o r b a lc o n y...
  • Page 23 Grand Four (4) feet from any gable, dormer or other roof Hall USA specifically for use with Eternal. It has structure with building interior access i.e. vent, been designed and thoroughly tested by our engi- window etc...
  • Page 24 Model Pressure GU20 0.9 "WC 1.6 "WC GU26 0.9 "WC 2.4 "WC GU28 0.5 "WC 1.8 "WC GU32 0.5 "WC 2.5 "WC NG 3.5~10.5 "WC GU20DV 0.9 "WC 1.6 "WC LP 8~14 "WC GU26DV 0.9 "WC 2.4 "WC GU28DV 0.4 "WC 1.75 "WC GU32DV 0.4 "WC 2.4 "WC...

  • Page 25: Gas Supply Piping

    Gas Supply Piping Check for Gas Leaks GAS SUPPLY PIPING When connections are completed, check for gas NOTE: This unit needs a manual gas control valve leaks by applying soapy water to all gas fittings and (shut-off valve) that must be connected to the unit connections.

  • Page 26: Water Supply Connection

    Water Supply Connection WATER SUPPLY CONNECTION AFTER INSTALLATION An approved manual water control valve (water After the water heater installation is complete, purge shutoff valve) must be placed on the cold water the water line to remove all the debris and air from supply line.
  • Page 27 HR for GU28, 180,000 BTU/HR for GU26 and 18” above the floor, please install GU20/GU26 on at 145,000 BTU/HR for GU20). least 6.5” platform. GU28/GU32 does not need to FILLING THE WATER be raised as its igniters and burner are at least 18"...

  • Page 28: Electrical Connection

    Electrical Connection ELECTRICAL CONNECTIONS CAUTION WARNING Label all wires prior to disconnection when servicing controls. Wiring error can cause im- The water heater must be electrically grounded. proper and dangerous operation. Verify proper operation after servicing. Installation Codes: Follow the requirements of the local authority having ju- The water heater requires a dedicated electrical power risdiction.
  • Page 29 Controller DIP Switch Setting Location of DIP Switch DIP Switch Main Controller Default Setting Layout switch 8 : NG / LPG switch 7 : maximum gas input selection 1 switch 6 : 20 PV / 26 PV or 28 PV / 32 PV switch 5 : OFF switch 4 : MCU function switch 3 : Temperature selection 1...
  • Page 30 Wiring and Connection Diagram...

  • Page 31: Liquid Propane Gas Conversion

    Liquid Propane Gas(LPG) Conversion Top Panel Remove Casing From Water Heater Exhaust Collar Loosen 4 screws securing the Exhaust Collar and remove Exhaust Collar from Water heater. Loosen 2 screws securing Top Panel and push towards the rear of the unit and remove the Top Panel. Loosen 2 screws securing the Front Panel on the bottom Front Panel front, and push downwards to remove the Front...
  • Page 32 Liquid Propane Gas(LPG) Conversion Replace NG Valve Adaptor With LPG Adaptor Gas Packing-2 Valve Adaptor G as Val ve Gas Packing-3 Flange Gas Packing-1 Packing Gas Valve Conne c tor Bracket Loosen and remove 5 screws securing the Gas Valve Flange. Remove the Gas Valve Flange, Packing and Valve Adaptor(NG).

  • Page 33: Plumbing Diagrams

    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 34 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 35: Warranty Terms

    Grand Hall Limited Warranty Grand Hall will warrant to the ORIGINAL PURCHASER of this gas water heater that it will be free of defects in material and workmanship for set period below from the date of purchase when installed and operated in a single- family residence in accordance with the instructions in the manual and all local/state/federal codes.

This manual is also suitable for:

Gu28Gu26Gu20

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