Takagi Flash Water Heater T-KD20 Installation Manual And Owner's Manual
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Flash Water Heater
Model T-KD20
Suitable for potable water heating and space heating
FEATURING
•
ENDLESS HOT WATER
•
ON DEMAND
•
COMPACT, SPACE SAVING
•
ENERGY CONSERVING
•
COMPUTER CONTROLS
•
COMPUTERIZED SAFETY
•
NO PILOT LIGHT
T-KD20
Heater Installation Manual and Owner's Guide
Instantaneous Water
WARNING
This product must be installed and
serviced
by
licensed gas fitter, or a professional
service technician and/or in accordance
with all local code. Improper installation
and/or operation, or installation by an
unqualified person, will void the warranty.
WARNING
Operation of this unit creates carbon
monoxide gas and flue gases which can
cause serious injury or death. In addition,
if the information in this manual is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury or death.
Takagi Industrial Co. USA Inc.
3-B Goodyear
Irvine, CA 92618
Toll Free (888) 882-5244 USA
Toll Free (877) 877-4935 CANADA
www.Takagi.com
a
licensed
plumber,
a
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Summary of Contents for Takagi Flash Water Heater T-KD20
- Page 1 Flash Water Heater Model T-KD20 Suitable for potable water heating and space heating FEATURING Takagi Industrial Co. USA Inc. • ENDLESS HOT WATER • 3-B Goodyear ON DEMAND •...
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Page 2: Table Of Contents
Before installing in areas over 4,500 feet Component Diagram …………23-25 above sea level, contact Takagi; • Component Diagram …………..26 Takagi is constantly improving its products therefore specifications are subject to Output temperature Chart …………..27 change without prior notice. - 2 -... -
Page 3: Introduction
Flash T-KD20 Water for the installation, operation, and maintenance Heater. Installation and service must be of the Model T-KD20 water heater. This unit performed by a qualified installer (for includes a fan enabling sidewall (power) example, a licensed plumber or gas fitter) venting and an advanced electronic ignition system. - Page 4 5. If any problem should occur, turn off all hot GENERAL water taps and turn off the gas. Then call a trained technician or the Gas Company or T-KD20. Water Heater the manufacturer. instantaneous, tankless water heater designed 6. WARNING:...
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Page 5: Installation
Category III Vent: A system that operates with the beginning of this manual. a positive vent static pressure and with a vent gas temperature. T-KD20 flue gas vents are 1. The gas regulator is preset at the positive pressure, it requires perfect seal of all factory;... -
Page 6: Indoor Installation
Wall Hanging Installation For a wall mount installation, use TK-BK01 brackets to securely attach the T-KD20 to the wall. Locate the heater as desired, but follow all applicable local codes, as well as the indoor or... -
Page 7: Venting Instructions
(Sealed Combustion) system that all combustible air supplies from outside building. The T-KD20 must be installed in a location where the proper amount of combustible air will be available to it at all times without obstructions. As combustible air supply pipe can be used suitable 3”... - Page 8 The vent system must be Takagi recommends the use of its part No.TK- sealed air tight. All seams and joints must be TV05. The vent terminator provides a means of...
- Page 9 Canada U.S.A Direct vent and Direct vent Other than Direct Vent other than Direct Vent Clearance above grade, veranda, porch, 1 foot 1 foot 1 foot deck, or balcony. 4 feet from below or Clearance to window or door that may be 3 feet 1 foot side opening.
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Page 10: Gas Supply/Gas Pipe Sizing
BEFORE OPERATING: pressure is completed, ensure the gas line to the A. This water heater does not have a pilot. It T-KD20 is disconnected to avoid any damage to is equipped with an electronic ignition the water heater. device that automatically lights the burner. -
Page 11: Water Connection
Immediately call qualified service 1. Turn off the power supply to the T-KD20 technician to inspect the water heater and Water Heater. to replace any damaged parts. 2. Close the manual gas shut off valve located on the gas supply line. -
Page 12: Electrical Connection
Then close the hot water taps. 5. Open the manual gas shut-off valve located on the gas supply line. ELECTRICAL CONNECTIONS 6. Turn on the power supply to the T-KD20 WARNING: Follow electrical code Water Heater. -
Page 13: Initial Operation
Energy method of testing water heater output, 4. Fully open the manual gas control valve the T-KD20 is rated for 228 gallons per hour installed. (GPH), or 3.8 gallons per minute (GPM), when 5. Turn on the 120 volt 60 Hz power supply to raising the water temperature by 77°F (for... -
Page 14: Temperature Setting
(GPM) Lavatory Faucet Hot Water Output Temperature Setting: Bath Tub With the FLASH T-KD20 Water Heater, the Shower output hot water temperature can be adjusted Kitchen Sink either manually from the main computer Dishwasher board’s dipswitches or with the optional remote... -
Page 15: Maintenance And Service
1. Clean the cold-water inlet filter (figure heater are protected by the anti-freeze devices below). on the T-KD20. Any hot or cold water pipes located outside of the unit will not be protected. OPEN Properly protect and insulate these pipes from freezing. -
Page 16: Error Codes
Common Trouble Shooting First check the flow rate through the unit. If the The T-KD20 can burn gas at a maximum input flow is less than .75 GPM, the unit will not rate of 185,000 BTUH. This puts a limit on the initiate. -
Page 17: Wiring Diagram
Electrical Rating: 120 VAC, 60 Hz, 0.8 A. Note: If any of the original wiring supplied with this appliance must be replaced, it must be replaced with appliance wiring material (180c) or its equivalent. Replacement wires are available through Takagi. -
Page 18: For Your Safety
FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner. -
Page 19: Danger
W A RN IN G The outlet hot water temperature of the T-KD20 water heater is factory set at 122 °F. WARNING: Use this heater at your own risk. The set outlet water temperature can cause severe burns instantly or death from scalds. -
Page 20: Application
Applications Space Heating Applications The T-KD20 can be used for potable hot water heating applications as well as space heating applications. WARNING • Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol group must not be introduced into the system when used for open loop potable water and space heating. - Page 21 State of Massachusetts. There are a wide variety of variations to the application of controls and equipment presented. Designers must add all necessary safety and auxiliary equipment to conform to code requirements and design practice. For more details, contact the Takagi Technical Department at (888) 882-5244...
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Page 22: Storage Tank
T-KD20 with Storage Tank The maximum flow rate through the T-KD20 is 6.9 This illustration is a concept design only. GPM. If it is necessary to achieve higher flow rates with full pressure for longer periods of time, then it can be installed in conjunction with a storage tank. A pump will be necessary to keep the storage tank water hot. -
Page 23: Optional Items
2. TK-TV05 Vent Terminator TK-RE02 Temperature This terminator can be used Remote Controller where a T-KD20 is going to functions. It allows the output be vented out through a temperature from the T-KD20 to wall. This be adjusted within the range of approved part of the unit. -
Page 24: Component Diagram
Component Diagram Case Computer board... - Page 25 Burner Computer Manifold...
- Page 26 Heat Exchanger Water Way...
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Page 27: Parts List
T-KD20 PARTS LIST 1 CASE ASSEMBLY 46 SCREW 2 BACK GUARD PANEL ASSEMBLY 47 SPARK ELECTRODE HOLDER 3 FRONT COVER 48 SPARK ELECTRODE 4 FIXING PLATE 49 FLAME SENSOR 5 TRANSFORMER 50 SCREW 6 JUNCTION BOX 51 DAMPER 7 JUNCTION BOX COVER... -
Page 28: Out Put Temperature Vs. Gpm
Out Put Temperature vs. GPM (Max.6.9 GPM) with Various Ground Water Temperature Correct Gas pipe size can be expect this chart 40 F 50 F 60 F 70 F Out put Hot Water Temperature 40 F 50 F 60 F 70 F...
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