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- Water Heater
- T-KJr
- Installation Manual And Owner's Manual
Takagi T-KJr Installation Manual And Owner's Manual - Case
Summary of T-KJr
Page 1
T-kjr. Instantaneous water heater installation manual and owner’s guide flash water heater model t-kjr. Suitable for potable water heating and/or space heating featuring • endless hot water • on demand • compact, space saving • energy conserving • computer controls • computerized safety • no pilot l...
Page 2: Table of Contents
1 table of contents specifications…………………………….. 1 for your safety…………………………... 2 operation…………………………………. 3 general…………………………… 3 turning it on……………………… 3 turning it off……………………… 3 temperature……………………… 3 flow……………………………….. 4 freeze protection………………... 4 installation………………………………… 5 general…………………………… 5...
Page 3: For Your Safety
2 for your safety please read this manual carefully and follow it exactly for your safety. 1. Follow all local codes, or in the absence of local codes, follow the most recent edition of the national fuel gas code, ansi z223.1/nfpa 54 in usa or the cga standard, can/cga b149.1 or .2 installation code...
Page 4: Operation
3 operation general the flash water heater is an instantaneous, tankless water heater designed to efficiently supply domestic or commercial hot water. The principle behind the flash water heater is simple: once a hot water tap is opened, the flash’s flow sensor detects that hot water is needed, and ...
Page 5: Flow
4 flow the flow rate through the t-kjr. Is limited to a maximum of 5.8 gpm. The temperature setting, along with the supply temperature of the water will determine the flow rate the unit puts out. Consult the flow charts on the last page of this manual to determine the possible outlet temperature and...
Page 6: Installation
5 installation general all gas water heaters require careful and correct installation to ensure safe and efficient operation. This manual must be followed exactly. 1. Read the for your safety section in the beginning of this manual. 2. This unit is not capable of being used as a pool or spa heater. ...
Page 7: Wiring Diagram
6 wiring diagram.
Page 8: Gas Supply Piping
7 gas supply piping check the rating plate to make sure that the unit was built for the type of gas available in the area. The gas supply piping should be sized according to the applicable plumbing code for a maximum draw of 140,000 btuh. First determine the effective length of the gas supply line b...
Page 9: Water Plumbing
8 water plumbing follow local guidelines for the length of the plumbing line in order to ensure that there is enough water pressure for all the fixtures on the line. First, calculate the effective length of the plumbing line by measuring the total length of pipe, and then adding to this 5’ for each ...
Page 10: Wall Hanging Installation
9 wall hanging installation the tkjr is built for wall mount installations only. Use proper screws to secure the unit in place. Locate the heater as desired, but follow all applicable local codes, as well as the indoor or outdoor clearances that apply to the installation. Outdoor installation follow...
Page 11: Indoor Installation
10 warning: united states regulations forbid installing the unit within 4’ of any opening into a building. Similar canadian regulations forbid the unit from being installed within 10’ of any opening into any building. Warning : improper installation can cause nausea or asphyxiation from carbon monox...
Page 12: Installation
11 when installing the vent pipe. Do not common vent this appliance with any other vented appliance. The venting system must not exceed a length of 35 ft. Minus 5 ft. For every elbow. Do not use more than 3 elbows. No. Of elbows max. Vertical or horizontal length 0 35 ft. 1 30 ft. 2 25 ft. 3 20 ft. ...
Page 13: Initial Operation
12 warning: if you smell gas: • do not use any appliance. • do not touch any electric switch; do not use any phone in your building. • immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • if you cannot reach your gas supplier, call the fire department...
Page 14: Space Heating Application
13 space heating application the flash t-kjr. Can be used for space heating as well as potable heating of hot water applications. Warning • toxic chemicals such as used for boiler treatments chemical, alcohol, glycerol and glycol group will not be introduced into the system when used for potable wat...
Page 15
14 dual-purpose hot water heating (domestic and heating): priority control devices: it has a capability to make priority system that can be used as a flow sensor, aquastat, or electronic controller to control radiant, hydro or baseboard heating equipments. A maximum allowable distance of 6’ ft. Betw...
Page 16: Applications
15 applications the t-kjr. Can be installed in a variety of plumbing applications, which will provide more comfortable domestic hot water. T-kjr. With storage tank: the maximum flow rate through the t-kjr. Is 5.8 gpm. If it is necessary to achieve higher flow rates for longer periods of time, then i...
Page 17
16 this system will also need a pump of 1/12 hp or greater, depending on the application situation..
Page 18
17 operating instructions 1. Stop! Read the safety information above or in the owners manual. 2. Turn off all electric power to the water heater. 3. Do not attempt to light the burner by hand. 4. Turn the gas manual gas valve located on the outside of the unit clockwise to the off position. 5. Wait ...
Page 19: Danger
18 vapors from flammable liquids will explode and catch fire causing death or severe burns. Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater. Warning: do not install water heater where flammable products will be stored. Rea...
Page 20: Maintenance
19 maintenance warning: turn off the electrical power supply, the manual gas control valve, and the manual water control valve before servicing. 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 certif...
Page 21: Computer Board
20 error codes all takagi units are self-diagnostic for errors. If there is a problem with the installation or the unit, it will give a signal, through a flashing light on the circuit plate, to communicate the source of the problem. If the unit has a tk-re01 remote control installed, this will give ...
Page 22: Optional Items
21 optional items 1. Tkre01emperature remote controller the tkre01 temperature remote controller has two functions, it allows the output temperature from the t-kjr. To be adjusted within the range of 95 °f to 167 °f, and it also works as a diagnostic tool that will give a concise error code whenever...
Page 23
22 2. Tk-tv01 vent terminator this terminator can be used where a t-kjr. Is going to be vented out through a wall. This is a csa approved part of the unit. Connect a category iii stainless vent pipe from the top of the unit to the backside of this terminator to exhaust flue gases through the wall wi...
Page 24: Case
23 case burner gas manifold.
Page 25
24 water way.
Page 26
25 001 case assembly 002 front cover 003 screw (coated) 004 bracket 005 back guard panel 006 screw (coated) 007 transformer 008 pressure switch 101 burner assembly 102 screw 103 silicon cap 104 igniter cord 105 flam e sensor cord 106 cord clamp 107 manifold 108 gasket 109 screw 110 manifold screw 11...
Page 27
26 flow rate vs. Temperature t-kjr flow rate vs. Each ground water temperature 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 100 110 120 130 140 150 160 170 180 hot water output temperature hot water output gpm 40 f 50 f 60 f 70 f.