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Installation Info - Takagi T-K2 Water Heater
For more detailed information - please download a Tk2 installation manual - (Link at the bottom of this page)
Return to T-K2 Main Page
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- Technical Specs of the T-K2
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Power Input
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Natural Gas — 20,000-185,000 BTU
LP Gas — 19,000-175,000 BTU
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Water Pressure
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Minimum — 15 PSI
Maximum — 150 PSI
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Gas Connection
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3/4"Male NPT
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Water Connection
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3/4"Male NPT
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Natural Gas Pressure
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Minimum — 5" WC
Maximum — 10.5" WC
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LP Gas Pressure
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Minimum —11" WC
Maximum — 14" WC
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Electrical Supply
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120 Volts / 0.8 Amps
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Minimum Flow to Activate
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3/4 gallons per minute
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Flow Rates
(50 degree Input Water Assumed)
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90°F rise / 3.4 gallons per minute
80°F rise / 3.9 gallons per minute
70°F rise / 4.4 gallons per minute
60°F rise / 5.2 gallons per minute
50°F rise / 6.2 gallons per minute
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Dimensions
(H x W x D)
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24 inches by 18 inches by 9 inches
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Out Water
Temperature
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Factory preset at 120 degrees - can be set to 105,
112, 120 or 180 degrees with an internal dipswitch.
Optional Temperature Remote control will allow range
from 95 degrees to 180 degrees.
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Vent Size Indoor Installation
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4"- Sealed Stainless Steel Piping
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Optional Accessories
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Wall Hanging Kit: TK-WB01
Vent Terminator & Backflow Preventer: FXHOOD
Temperature Remote Controller
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- Required clearances for OUTDOOR INSTALLATION
| Takagi TK2 |
OUTDOOR INSTALLATION |
| TOP |
36" |
| FRONT |
24" (maintenance space) |
| BACK |
1" |
| PIPING SIDE |
6" |
| NON PIPING SIDE |
2" |
| GROUND |
3" off ground on non-combustible base |
- Required clearances for INDOOR INSTALLATION
| Takagi TK2 |
INDOOR INSTALLATION |
| TOP |
12" |
| FRONT |
4" (24" suggested for maintenance space only) |
| BACK |
1" |
| PIPING SIDE |
6" |
| NON PIPING SIDE |
2" |
| FLOOR |
Non-combustible base |
- Gas & Venting for the Takagi TK2 Gas Water Heater
It is very important to have the proper size gas line - see the T-K2 manual for
more detail of pipe size or contact your local gas company or contractor.
| Gas |
5/8" |
3/4" |
7/8" |
1" |
| Liquid Propane |
Not Recommended |
35 feet |
70 feet |
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| Natural Gas |
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25 feet |
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80 feet |
| Venting |
Min. Diameter |
Max. Vertical or Horizontal run |
Max. number of elbows |
Rule |
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4 inches |
35 feet |
3 |
Deduct 5ft. for each elbow from max. vent length |
- Dimensions of the Takagi TK2
| Height |
Width |
Depth |
Weight |
| 24.5" |
16.5" |
8.3" |
65 lbs.(shipping weight) |
- Combustion Air Required (Indoor Installations) Takagi TK2
In order to ensure an adequate supply of combustion air, the
National Fuel Gas Code requires that any conventional vented gas appliance be
installed in a room with a minimum volume of 50 cubic feet per 1,000 Btu/hr
rated input. The following is the minimum size of the open space in which the
Tk2 may be installed in compliance with this requirement:
| Model |
Volume |
Area with an 8' ceiling |
| 240FX |
9,250 cubic feet |
1,156 square feet |
If the Tk2 is installed in an area smaller than indicated
above, then the installer must make special provisions for combustion air in the
form of two openings, each one within 12" of the top and 12" of the
bottom of the space, having a total free area of 1 square inch per 1,000 Btu/hr
of rated input if the air is taken from inside the house (two 13" x
13" openings). This requirement reduces to 1 square inch per 4,000 Btu/hr
if the air is taken from the outside (two 6.5" x 6.5" openings).
Note: This calculation assumes normal rates of
"infiltration" of outside air. A super-insulated, super-tight
space/building may require outside air for the TK2 even though the volume/area
of the space meets this application.
Caution: In addition to the above, the TK2 must be
properly vented to ensure safe and efficient operation.
- Output Temperature Ratings of the Takagi TK2
The T-K2 is factory preset at 120 degrees. You can change the output temperature
with the internal dipswitches to 105 degrees, 112 degrees, 120 degrees or 180 degrees.
If you want to use any other temperatures that this - you can purchase the optional
Remote Control Temperature that will allow the T-K2 to have output temperatures
from 95 degrees to 180 degrees.
Please Note: Hot Water Heater Temperature over 125 Degrees F can cause severe
burns instantly or death from scalding. Children, disabled and elderly are at the highest
risk of being scaled. Feel water temperature before bathing of showering.
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For more information download an
installation Takagi T-K2 manual in pdf format.
Also see all water heaters manuals from this link
Return to T-K2 Main Page
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