Installation ● Operation Manual Natural Gas (NG) - Factory Default Liquid Propane Gas (LPG) - Optional Orifice 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 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.
Table of Contents Included & Optional Accessories P3 Specifications P4 Dimensions P5 Parts & Service Parts List P6~10 Pre-Installation Instructions for Your Safety P11 Installation Preparation P12 Condensate Disposal P13 Indoor Installation P14 Mobile Home Installation P15 Wall & Floor Mounting P16~17 Venting Intake & Exhaust Material P18 Direct Venting & EC Adapter Installation P19 Vertical & Horizontal Termination P20~21 Clearance Requirements from Vent Terminations to Building O
Mounting Bracket Assembly 314070066 Mounting Bracket Assembly P/N Item Description Qty Description Qty P/N Item Description Qty 1 Included Accessories 194140151 T&P Relief Valve 1 194140151 T&P Relief Valve 1 305070273 Drain Valve Assembly 1 305070273 Drain Valve Assembly 195140195 T-Fitting (for condensate line) 1 1 3 314070066 Qty 27 508111145(S) GU145(S) 508111195(S) GU195(S) Item P/N 508111195(M) GU195(M) 508111145(S) GU145(S) Eternal Hybrid 508111195(S) GU195(S) Condensing 5081
Eternal Hybrid Water Heater Technical Specifications Model Name GU145 / GU145(S) 98% NG / 99% LP / 0.96 Energy Factor Thermal Efficiency (*) / Energy Factor Installation Flue System Vent Run Indoor / Outdoor / Wall Hung / Floor Standing Sealed Combustion Direct Vent / Power Vent Convertible 76.2mm(3") PVC / 50.
Dimensions - GU145(S) / 508(11,12,21,22)1145(S) GU195(S,M) / 508(11,12,21,22)1195(S,M) 5
Parts Diagram for Model GU145(S) / 508(11,12,21,22)1145(S) GU195(S,M) / 508(11,12,21,22)1195(S,M) 20 31 19 11 12 2 8 16 7 5 3 4 10 7 15 1 14 17 9 6 13 18 6
Parts Diagram for Model GU145(S) / 508(11,12,21,22)1145(S) 28 27 29 26 30 21 25 22 23 24 7
Parts List for Model GU145(S) / 508(11,12,21,22)1145(S) KEY DESCRIPTION 1 Panel, Front Assembly 2 Panel, Top / Rear Assembly 3 Panel, Rear 4 Panel, Left Assembly 5 Panel, Right Assembly (GU145(S)) 6 Panel, Bottom 7 Mounting Bracket 8 Wall Bracket 9 Controller / Front 10 T&P Relief Valve (Cash Acme) 11 Vent Collar 12 Vent Collar Packing 13 Rubber Foot 14 Drain Valve Assembly 15 Main Power Cord 16 Handle 17 Condensing Nipple 18 Plug 19 Mesh Screen 20 Outdoor Venting Ca
Parts Diagram for Model GU195(S) / 508(11,12,21,22)1195(S) 28 27 29 26 30 21 25 22 23 24 Parts Diagram for Model GU195(M) / 508(11,12,21,22)1195(M) 28 27 29 30 26 30 21 25 22 23 24 9
Parts List for Model GU195(S,M) / 508(11,12,21,22)1195(S,M) KEY DESCRIPTION 1 Panel, Front Assembly 2 Panel, Top / Rear Assembly 3 Panel, Rear 4 Panel, Left Assembly 5 Panel, Right Assembly (GU195(S,M)) 6 Panel, Bottom 7 Mounting Bracket 8 Wall Bracket 9 Controller / Front 10 T&P Relief Valve (Cash Acme) 11 Vent Collar 12 Vent Collar Packing 13 Rubber Foot 14 Drain Valve Assembly 15 Main Power Cord 16 Handle 17 Condensing Nipple 18 Plug 19 Mesh Screen 20 Outdoor Vent
Pre-Installation Instructions for Your Safety ! WARNING ! If you do not follow these instructions exactly, a fire 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. □ Properly ground the unit in accordance with all local codes or in the absence of local codes, with the National Electrical Codes, ANSI/NFPA 70.
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. Additional Safety Instructions □ Check the markings of the rating plate on the water heater to be certain the type of gas being furnished corresponds to what the water heater is equipped for.
Condensate Disposal CAUTION ! ! The condensate drain must be filled and unobstructed to allow flow of condensate. The condensate should not be subjected to conditions where freezing could occur. If the condensate is subjected to freezing or obstructed, it can leak, resulting in potential water damage to the unit and surrounding area. The condensate trap must be filled with water prior to using the water heater. Fill 90 cc.(3.0 oz.) water through exhaust collar per figure 1. □ 90 cc.(3.0 oz.) Figure 1.
Indoor Installation Clearances From top of water heater 30cm (12") From back of unit 1.5cm (0.6") From front of unit 60cm (6") From left side of unit (gas piping side) 15cm (6") From side wall flue or vent connector in any direction 15cm (6") From right side of unit 5cm (2") Combustion Air Supply □ GU145(S) / GU195(S,M) can be used as either Power-Vent or Direct-Vent appliance.
Mobile Home Installation ! WARNING ! Read and Review this entire Manual with special emphasis on the combustion and ventilation for your safety. If you do not follow these instructions exactly, a fire or explosion could result causing property damage, personal injury or loss of life.
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" Philips Head Screws 1/4"x3/8" 2. Select a location on the wall to mount the unit. The included wall bracket has been pre-drilled for easy installation on standard stud walls.
Floor Mounting Standing Installation □ GU145(S) / GU195(S,M) can be installed standing on combustible floor surface, or on a water heater stand. □ Be sure to use a suitable draining pan under the unit if leakage of the tank or connections will resuit in damage to the area adjacent to the appliance. Floor Standing Place unit directly on an even surface. Factory installed rubber feet can be adjusted if the surface is slightly uneven.
Venting Intake & Exhaust Material ! WARNING ! This water heater must be properly vented for removal of exhaust gases to the outside atmosphere. Correct installation of the vent pipe system is mandatory for the safe and efficient operation of this water heater and is an important factor in the life of the unit. Vent Pipe Material Eternal Hybrid Water Heater is a gas burning appliance with fan-assisted exhaust. The appliance must be vented with 50.8 or 76.
Direct 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. □ Direct Vent configuration is suitable for indoor only. □ Recommended for facilities with difficulty accessing combustion air. Maximum Allowable Vent and Combustion Air Piping Length Minimum Required Air Volume 50.8mm (2") Piping 76.
Vertical Termination Below diagrams are examples of vertical terminations. □ Through roof (Direct Vent) □ Through roof (Concentric Vent) An open tee is optional and can be used as termination to alleviate back pressure in the venting system in areas experiencing abnormally high winds ! WARNING ! □ Minimum 30cm(12") above anticipated snow level. □ It cannot be connected to existing vent piping or chimney.
Horizontal Termination Below diagrams are examples of vertical terminations. □ Side Wall (Direct Vent) □ Side Wall (Concentric Vent) Mortar or silicone caulk 0.6(2')*0.6m(2') Sheet Metal Shieldon Brick or Masonry Walls Exhaust pipe Strap 5.0cm(2") Max. Vent Terminal with 12.7mm(1/2") Mesh Protective Screen Inside Strap Intake pipe 30cm (12") Pipe Coupling 2.5cm 5.0cm Combustion Air Exhaust pipe 15cm(6") 2.5cm(1") Min. Intake pipe Wall Thimble 30cm(12") min. above Grade or above snow level.
Clearance Requirements from Vent Terminations to Building Openings All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code, ANSI Z223.1 and in Canada, in accordance with NSCNGPIC. □ Vent Clearances When Heater is Installed Indoors Maintain the following clearances to any opening in any building: ● 1.2m(4') below, 1.2m(4') horizontally from, or 0.3m(1') above any door, operable window, or gravity air inlet into any building. ● 0.
Multiple Units Termination * Multiple unit Termination □ Vertical Terminations □ Horizontal Terminations Vent Termination Min 30cm(12") (12 cm 30 in ") M Vent Termination Combustion Air Termination 30 ( cm 12 ") M in Combustion Air c 30 1 m( Vent n Mi 2" ) Vent Combustion Air Termination Mi n 30cm(12") Min Above Grade / Highest Anticipated Snow Level 30 cm (12 ") Combustion Air Termination Combustion Air * Concentric Multivent Termination When two or more direct vent units are vente
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 flow to the burner enclosure. Failure to follow this warning could result in product damage or improper operation, personal injury, or death. □ Do not allow insulation or other materials to accumulate inside the pipe assembly when installing through the hole.
Vent Pipe Installation & Terminator Position Description Canadian Installations A Clearance above grade, veranda, porch, deck, or balcony 0.3m (1foot) B Clearance to window or door that may be opened 0.
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 sufficient BTU load to all appliances. Insufficient gas pressure and volume will cause your water heater to be deficient in performance and may not work properly.
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 3.3Kpa(13"w.c.) maximum pressure. NOTICE ! ! LP conversion kit must be ordered from Grand Hall USA. Conversion can only be completed by a qualified professional. How to convert to LP 1. Remove front panel by loosening 5 screws. 4.
Water Supply Connection WATER SUPPLY CONNECT □ The water fittings on the Eternal water heater are 19.05mm(3/4") NPT. □ Although Eternal's water connections are 19.05mm(3/4"), if the installation site has only 12.7mm(1/2") plumbing throughout the building, it is not necesssary to up size the water lines to 19.05mm(3/4") when installing a single unit.
rds drain Condensate Piping □ This water heater is a high efficiency, fully condensing appliance which produces condensate during operation. The water heater incorporates a collection, neutralization, and removal system which must be properly drained in order to ensure proper operation of this appliance. □ In order to drain the condensate, a 16mm(1/2") threaded fitting is provided at the left side of the water heater. Do not reduce the size of this fitting or the drain piping to less than 16mm(1/2").
Temperature and Pressure Relief Valve The following 19.05mm(3/4"), maximum 10342.5mbar(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. □ No one should be in front of or around the outlet of the temperature-pressure relief valve discharge line when in use.
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 filled with water. □ All units come with a factory installed 3-pronged power (grounded) plug.
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. 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.
Optional Remote Controller Installation Configuring Multiple Remote Controllers 1 Rear Side 2 4 Remote3 Controller Selection Switch Setting Layout 1 2 3 4 1 2 1 3 3 3 4 1 1 2 3 3 4 2 : Left 4 : N/A 1 : Right 3 : Right 2 : Left 4 : N/A 4 Room A 1 : N/A 3 : N/A 2 : Right 4: Left Room B 1 : N/A 3 : N/A 2 : Right 4: Right Bathroom 1 4 4 1 4 1 : Right 3 : Left 3 2 2 2 : Left 4 : N/A 4 2 3 3 1 : Left 3 : N/A Kitchen 1 1 1 2 2 4 Bathroom 2 2 Note : Max. 30m run (98.
MCU Installation MCU Kit Components MCU Wire Female Termination Wire (F1) Male Termination Wire (M1) 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. such as motels, apartment complexes and laundromats etc … Feature and Benefits □ High Tech CANBUS Protocol ensures good communication between units.
MCU Installation MCU Installation 1. With all taps closed and unit off, unplug the power cord of the unit from the power outlet. 2. 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. 3. Make sure dip switch #6, 7, 8 OFF position. (Group 2, No. 6, 7, 8) If you need more detail information ID setting, refer to page 38 “ Unique Unit Identification Number”. 4.
MCU Installation Unique Unit Identification Number All units networked need to be assigned unique ID numbers. For example, if 3 units are used, the first unit should be assigned #1 by pushing Dipswitch 6,7 and 8 to OFF position. The second unit should be assigned #2 by pushing Dipswitch 6 to ON position while leaving the rest in OFF position. The third unit should be assigned #3 by pushing Dipswitch 7 to ON position while leaving the rest in OFF position.
Recirculation System with an Eternal Water Heater Circulation Pump Expansion Tank DHW Cold Water Supply Fixtures Line Strainer Gas IPC control Optional Single Eternal with Storage Back up Hot Water Supply Storage Tank should set to 6°C(20°F) below * Aquastat Eternal temperature setting. Gas Aquastat control wire Cold Water Supply Building Circulation Pump Building Hot Water Return Line These diagrams are for reference as basic guides.
Recirculation with 2 Units manifold Aquastat should set to 6°C(20°F) below * Eternal temperature setting. 1 1/4" Circulation Pump 1 1/4" 3/4" Line Strainer 3/4" 3/4" Cold Water Supply Gas Fixtures Gas 1 1 1/4" 3/4" 1 1/4" 2 3/4" 3/4" 3/4" These diagrams are for reference as basic guides. Each installation should be engineered properly and compliant to Local and State Codes.
Recirculation System with Multiple Units Connection Expansion Tank * Aquastat should set to 6°C(20°F) below Eternal temperature setting.
Restaurant and Commercial Applications NOTICE ! ! For restaurants or applications where rapid on/off hot water usage is frequent, i.e. handheld sprays, Eternal Circulation Expansion Pump recommend use of recirculation pump through inTank the system. This recommendation is designed to prime the Hot Water units for rapid usage, as the burner will not ignite during rapid on/off usage due to the intermittent nature of the ColdaWater application.
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. The unit having its inletOutlet closest to the cold water supply is piped so that its outlet will be farthest from the hot water supply line.
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 floor because gas is heavier than air and will settle on the floor. □ Use only hand to turn the manual gas valve knob. Never use tools.
How To Use The Front Control Interface Digital Monitor: Burner Indicator: Indicates set water temperature and shows error code in the event of an error. Indicates when burner is in operation. ON Indicator: Indicates unit is plugged in and functional. Priority Indicator: Indicates which controller is in control of adjusting water temperature. Power Button: Turns the heater ON or OFF. Priority Button: Alternates the control of temperature selection between front and remote controller(s).
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 controller. Temperature Setting Button: Used to set water temperature. Power Button: Turns the heater ON or OFF. Figure 1. Figure 2. 1. To switch the water heater ON with Remote Controller, from OFF condition Press the Power Button.
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 certified and trained technician. □ The following systems and parts should be checked at least once a year. 1. Venting system 2. Burner 3.
"D" button Diagnostic Function Applicable Model: GU145(S) / 508(11,12,21,22)1145(S) GU195(S) / 508(11,12,21,22)1195(S) GU195(M) / 508(11,12,21,22)1195(M) Description: Enhanced diagnostic functions are now available with the touch of a button.
DIAGNOSTICS Before calling for service, review the following diagnostic steps first for saving time and money! Question Burner does not ignite when the hot water is opened. Answer 1. Make sure that the ON/OFF button on the front or remote controller has been turned ON. 2. If the monitor on the front or remote controller is blank, make sure the power cord is plugged and 3A fuses on the main controller in the units are good. 3. Make sure that the water supplies to the unit.
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.
DIAGNOSTICS ●Code Error Code Diagnosis display Cause E31 E36 E37 E38 E39 E40 E41 E42 E43 E47 E48 E49 E50 E51 E52 E53 E54 E56 E57 E93 E94 Remedy □ Rotation of a DC fan is too low □ A controller failure concerning gas valve □ Communication failure with SUB CPU Subsidiary RAM failure □ □Call service center □Call service center □Call service center □Call service center □ A controller failure concerning □Call service center □ Main RAM failure □Call service center Subsidiary flame signal □ A controller f
How To Check Gas Combustion EC Adapter Cap Analyzer Probe Gas Analyzer Gas / Air Ratio Valve Inlet pressure port Adjustment screw A Manifold pressure port Please loosen the 1/8" NPT screw and check the manifold pressure by using a manometer with 0.01" W.C. resolution. Min and Max manifold pressures are indicated on the Eternal OM and Rating label. WARNING ! ! The combustion testing and adjustments must be performed by a qualified installer, service agency or the gas supplier.
How To Check Gas Combustion Setting procedure for high firing Unscrew the EC adopter cap on vent collar (see to above diagram) and connect the flue gas analyzer. - Set to full load: with the unit at 55°C(130°F) or higher, force the unit into high fire by opening demand of at least 26.5 LPM (7GPM) water flow rate. - Wait 10 seconds for modulation to stabilize with the full-load fan speed, measure the O2/CO2 percentage and compare this to the values in table 1.
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) M 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 BK R G BL Y O W BR BK R G BL Y O W BR R W BK Y Y BK W R 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 BR G BR G BL O BL O Y R BL BK BK 1 2 1 2 Y BK Y BK BL BK BL Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 O R
Wiring and Connection Diagram Wiring Diagram MODEL : GU195(M) / 508(11,12,21,22)1195(M) M 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 BK R G BL Y O W BR BK R G BL Y O W BR R W BK Y Y BK W R 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 BR G BR G BL O BL O Y R BL BK BK 1 2 1 2 Y BK Y BK BL BK BL Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 O R R R O BK BL B
Eternal Water Heater Limited Warranty Grand Hall will warrant to the ORIGINAL INSTALLED LOCATION 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 accordance with the instructions in the manual and all local/provincial/federal codes.
