Takagi T-K2 Technical and Installation Information
Specification data recorded on this site for Takagi T-K2 Technical and Installation Information.
Installation Info Takagi T-K2 Water Heater
For more detailed information - please download a Tk2 installation manual - (Link at the bottom of this page)
- Technical Specs of the T-K2
| Power Input | Natural. Gas — 20,000-185,000 BTU LP Gas — 19,000-175,000 BTU |
|---|---|
| Water Pressure | Minimum — 15 PSI Maximum — 150 PSI |
| Gas Connection | 3/4"Male NPT |
| Water Connection | 3/4"Male NPT |
| Natural Gas Pressure | Minimum — 5" WC Maximum — 10.5" WC |
| LP Gas Pressure | Minimum —11" WC Maximum — 14" WC |
| Electrical Supply | 120 Volts / 0.8 Amps |
| Minimum Flow to Activate | 3/4 gallons per minute |
| Flow Rates (50 degree Input Water Assumed) | 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 |
| Dimensions (H x W x D) | 24 inches by 18 inches by 9 inches |
| Out Water Temperature | 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. |
| Vent Size Indoor Installation | 4" |
| Optional Accessories | Wall Hanging Kit: TK-WB01 Vent Terminator & Backflow Preventer: FXHOOD Temperature Remote Controller |
- 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 | |
| Natural Gas | 25 feet | 80 feet | ||
| Venting | Min. Diameter | Max. Vertical or Horizontal run | Max. number of elbows | Rule |
| 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.