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Summary of Contents for Thermann 26NG50C
- Page 1 INSTALLER'S MANUAL Gas Continuous Flow Condensing Water Heaters Installation Details Warranty Models 26NG50C/26LP50C 26NG60C/26LP60C...
- Page 2 Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters...
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Page 3: Table Of Contents
CONTENTS Important Safety Instructions Electrical Connection Introduction Exploded Diagram of Unit Dimensions Technical Data Cold Water Connection Hot Water Connection Gas Connection Electrical Connection Condensate Drain 12-14 Checking Operation Remote Controllers 14-20 Cascade Installation 21-22 Cascade Set Up Cascade Installation Flowchart Wiring Diagram and Remote Controllers Installation Schematic Fault Monitor... -
Page 4: Important Safety Instructions
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters IMPORTANT SAFETY INSTRUCTIONS Danger DO NOT INSTALL INDOORS These units are designed for outdoor installation and should never be installed indoors as this can cause oxygen deficiency and incomplete combustion. WATCH FOR GAS LEAK... -
Page 5: Electrical Connection
ELECTRICAL CONNECTION DANGER OF WET HANDS Do not touch power plug with wet hands. It can cause electric shock. Warning INSERT POWER PLUG FULLY INTO POWERPOINT Check that the power plug is clean and undamaged, Check then fully insert into the power point. DO NOT PULL POWER CORD Do not remove the power plug by pulling the cord as Prohibited... -
Page 6: Introduction
(6) A notice of intention to install shall be lodged with the relevant local Gas Authority prior to installation. DELIVERY INSPECTION The Thermann Gas Continuous Flow hot water heater unit is supplied fully assembled and ready for installation. The installer, upon delivery of the unit, should immediately remove all packing materials and inspect the unit for damage, and ensure that the unit supplied is correct for the gas supply to which it is to be connected. -
Page 7: Exploded Diagram Of Unit
EXPLODED DIAGRAM OF UNIT PARTS DESCRIPTION 1. FLUE OUTLET 2. GAS VALVE 3. CIRCUIT BOARD 4. BURNER CASE 5. HOT WATER OUTLET 6. COLD WATER INLET 7. GAS SUPPLY INLET 8. DRAIN OUTLET 9.PRIMARY HEAT EXCHANGER 10. SECONDARY HEAT EXCHANGER 11. -
Page 8: Dimensions
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters DIMENSIONS POWER CABLE ENTRY POWER CABLE ENTRY HOT WATER OUTLET GAS SUPPLY INLET R3/4 /20 R3/4 /20 HOT WATER OUTLET GAS SUPPLY INLET R3/4 /20 R3/4 /20 PRESSURE RELIEF VALVE WATER INLET FILTER... -
Page 9: Technical Data
TECHNICAL DATA MODEL Nominal hourly gas consumption by MJ/h proportional electronic gas control Test point pressure (NG) 0.84 Test point pressure (Propane) 1.27 Water heating capacity @ 40°C rise L/min 16.25 Minimum working pressure Maximum working pressure 1200 Gas injectors diameter (NG) 1.00 / 1.50 Gas injectors diameter (Propane) 0.7 / 1.0... -
Page 10: Cold Water Connection
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters COLD WATER CONNECTION COLD WATER SUPPLY TO WATER HEATER Refer to the Dimensions diagrams on page 8 for the position of connections. Copper tube of a minimum size of 3/4" (DN20) should be connected to the appliance. -
Page 11: Gas Connection
GAS CONNECTION Fit a union to the water heater gas inlet for easy connection and removal. The thread diameter is R3/4” (20mm). THIS DOES NOT INDICATE THE SIZE OF THE GAS SUPPLY. Refer to AS/NZS 5601 for guidance on pipe sizing. Fit an approved isolating gas valve and a disconnection union into the supply line adjacent to the water heater gas connection. -
Page 12: Condensate Drain
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters CONDENSATE DRAIN This unit generates condensate continuously at a rate of up to 5 litres per hour as a by- product of the highly efficient gas burner system. This condensate must be drained via a pipe to a suitable point of discharge. As the condensate is a by-product of gas combustion, it is mildly acidic. - Page 13 CONDENSATE DRAIN INSTALLATION 1. The drain line MUST NOT discharge onto electrical connections, earth stakes, copper pipes, concrete paths or into a pond. 2. The point of discharge from each drain line shall be located so that the release of condensate does not cause a nuisance, is readily discernable and incurs no risk of damage to the building.
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Page 14: Checking Operation
3. CONNECTION OF THE CABLE TO THE THERMANN UNIT 1. Remove the front cover from the unit. 2. Install the cable to the Thermann main unit using conduit or by concealing the cables in the wall cavity. 3. Install the cable into the cabinet through the conduit in accordance with the following table. - Page 15 3. CONNECTION OF CABLE TO THE THERMANN UNIT 1. Remove the front cover from the unit. 2. Install the cable to the Thermann main unit using conduit or by concealing the cables in the wall cavity. 3. Install the cable into the cabinet through the conduit in accordance with the table below.
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Page 16: Safety Precautions
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters REMOTE CONTROLLERS 5. INSTALLATION OF REMOTE CONTROLLERS Safety precautions • Disconnect the heater from the power supply before connecting remote controller cables. • Do not install a remote controller above a heat source such as a hot plate or a kitchen range. - Page 17 REMOTE CONTROLLERS Installation • Before remote controller installation, check the hole position considering wall stud location. • Drill a 12mm hole in a wall for the remote controller cable. • Feed remote controller cable to remote controller wall location. Pull cable end connector through hole.
- Page 18 Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters REMOTE CONTROLLERS 6. INITIAL SETTING OF REMOTE CONTROLLERS Before using, the following initial setting procedure is necessary for all remote controllers. The first time the remote controller is connected, ` `Lo´ ´ is indicated on the display.
- Page 19 REMOTE CONTROLLERS 7. COMMISSIONING AND TESTING After completing the installation of the unit, turn the water, power and gas supplies on to the unit. 8. OPERATION OF REMOTE CONTROLLERS Turn the remote controller in a kitchen ON by pressing the ON/OFF button. The ON indicator will illuminate.
- Page 20 Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters REMOTE CONTROLLERS YST-2807 (Universal Controller) This remote controller is intended to be used in the kitchen, laundry room, bathroom and ensuite. Digital Monitor Indicates the selected water temperature. Error messages flash in the event of failure.
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Page 21: Cascade Installation
Water and gas pipe length should be the same to both units. Otherwise the temperature of • Thermann genuine cascade cable can be used to connected the two units. the hot water at the tap can be unstable. -
Page 22: Cascade Set Up
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters CASCADE INSTALLATION To connect the cascade cable, refer to 'How to fix the cables' on page 15. CASCADE SET UP Do not supply power to either unit until steps 1-4 below are completed. -
Page 23: Cascade Installation Flowchart
CASCADE INSTALLATION FLOWCHART Hook up the If connecting the remote Set the Dip Switch 2 on the interconnect cable controller, all remote controllers PCB of each unit (MASTER to the remote should be connected with the unit and SLAVE unit). controller terminal MASTER unit. -
Page 24: Wiring Diagram And Remote Controllers Installation Schematic
Thermann Installer's Manual Gas Continuous Flow Condensing Water Heaters WIRING DIAGRAM AND REMOTE CONTROLLERS INSTALLATION SCHEMATIC WATER FLOW CONTROL VALVE GAS VALVE 3 GAS VALVE 2 : White : Black DIP SWITCH 2 : Brown GAS VALVE 1 : Blue... -
Page 25: Fault Monitor
FAULT MONITOR When installed with remote controllers the THERMANN HOT WATER UNIT HAS A SELF DIAGNOSING FUNCTION FOR FAULTS. When the unit does not operate correctly an error code is displayed on the remote controller TEMPERATURE DISPLAY INDICATOR. The cause of the fault can be determined after checking the fault numbers display on the remote controller display. - Page 26 Gas Continuous Flow Condensing Water Heaters FAULT MONITOR When installed with remote controllers the THERMANN HOT WATER UNIT HAS A SELF DIAGNOSING FUNCTION FOR FAULTS. When the unit does not operate correctly an error code is displayed on the remote controller TEMPERATURE DISPLAY INDICATOR.
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Questions and answers
how to light up the flame ??
The manual does not provide direct instructions for lighting the flame on a Thermann 26NG50C. However, it includes troubleshooting steps for combustion issues and installation procedures. To ensure the unit operates correctly, check the combustion indicator LED, verify the cascade installation settings, and ensure proper wiring and dip switch configurations. If the unit does not ignite, follow the troubleshooting flowchart or consult a licensed plumber.
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