BOSCH Tankless Water Heaters - Models & Pricing
| Model WR400-1K |
Our most popular BOSCH model - a solid workhorse suitable for most everyday whole house water heating needs. Flow controlled, this modulating unit combines high efficiency with high output, plus low minimum flow rate. Output temperature may be preset to any level between 90F and 140F and the selected temperature will be maintained indefinitely (plus or minus 5F). This unit is suitable for single family residential or commercial/industrial applications.
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Technical Specifications:
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| Fuel Types Available: |
Natural Gas, Propane |
| Rated Input (BTU/hr.): |
117,000 |
| Minimum Input (BTU/hr.): |
33,000 |
| Thermal Efficiency/Energy Factor: |
82% / .69 |
| Fuel Consumption: |
30.6 to 108.8 (CuF/hr) NG /
1.5 to 5.4 (lbs/hr) LP |
| Ignition Type: |
piezo with pilot |
| Max flow rate at 45F temp rise (GPM) |
4.0 |
| Max flow rate at 100F temp rise (GPM) |
1.8 |
| Minimum Flow Rate (GPM) |
0.5 |
| Dimensions |
30 5/16" x 17 5/16" x 8 11/16" |
| Shipping Weight |
44 lbs. |
| Flue Size |
5" |
| Water Inlet & Outlet (NPT) |
1/2 inch |
| Gas Inlet (NPT) |
1/2 inch |
| Water Pressure Range |
13 - 150 psi |
| Inlet Pressure Required |
11 inches W.C. LP /
7 inches W.C. NG |
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| WR400-3K(B) |
Same as WR400-1K except it is equipped with an electronic ignition powered by 2 "D" cell bateries instead of a standing pilot - it will keep on operating even in the event of a power failure!
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Technical Specifications:
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| Fuel Types Available: |
Natural Gas, Propane |
| Rated Input (BTU/hr.): |
117,000 |
| Minimum Input (BTU/hr.): |
33,000 |
| Thermal Efficiency/Energy Factor: |
82% / .80 |
| Fuel Consumption: |
30.6 to 108.8 (CuF/hr) NG /
1.5 to 5.4 (lbs/hr) LP |
| Ignition Type: |
electronic (2 normal "D" cell batteries) |
| Max flow rate at 45F temp rise (GPM) |
4.0 |
| Max flow rate at 100F temp rise (GPM) |
1.8 |
| Minimum Flow Rate (GPM) |
0.5 |
| Dimensions |
30 5/16" x 17 5/16" x 8 11/16" |
| Shipping Weight |
44 lbs. |
| Flue Size |
5" |
| Water Inlet & Outlet (NPT) |
1/2 inch |
| Gas Inlet (NPT) |
1/2 inch |
| Water Pressure Range |
13 - 150 psi |
| Inlet Pressure Required |
11 inches W.C. LP /
7 inches W.C. NG |
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| Model WR400-7K |
Same as WR400-1K except it is activated by an internal micro hydro generator instead of a standing pilot - it will keep on operating even in the event of a power failure!
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Technical Specifications:
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| Fuel Types Available: |
Natural Gas, Propane |
| Rated Input (BTU/hr.): |
117,000 |
| Minimum Input (BTU/hr.): |
33,000 |
| Thermal Efficiency/Energy Factor: |
82% / .80 |
| Fuel Consumption: |
30.6 to 108.8 (CuF/hr) NG /
1.5 to 5.4 (lbs/hr) LP |
| Ignition Type: |
flow activated internal micro hydro generator |
| Max flow rate at 45F temp rise (GPM) |
4.0 |
| Max flow rate at 100F temp rise (GPM) |
1.8 |
| Minimum Flow Rate (GPM) |
0.5 |
| Dimensions |
30 5/16" x 17 5/16" x 8 11/16" |
| Shipping Weight |
44 lbs. |
| Flue Size |
5" |
| Water Inlet & Outlet (NPT) |
1/2 inch |
| Gas Inlet (NPT) |
1/2 inch |
| Water Pressure Range |
13 - 150 psi |
| Inlet Pressure Required |
11 inches W.C. LP /
7 inches W.C. NG |
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| Model WR400-5K |
Especially designed with 40% less flow resistance for commercial and industrial high volume steady-flow applications. They are ideal for pump recirculation with storage, and for radiant floor heating systems.
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Technical Specifications:
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| Fuel Types Available: |
Natural Gas, Propane |
| Rated Input (BTU/hr.): |
117,000 NG |
| Minimum Input (BTU/hr.): |
58,500 |
| Thermal Efficiency: |
82% |
| Fuel Consumption: |
54.3 to 108.8 (CuF/hr) NG /
2.7 to 5.4 (lbs/hr) LP |
| Ignition Type: |
Piezo with pilot |
| Max flow rate at 45F temp rise (GPM) |
4.0 |
| Max flow rate at 100F temp rise (GPM) |
1.8 |
| Minimum Flow Rate (GPM) |
1.8 |
| Dimensions |
30 5/16" x 17 5/16" x 8 11/16" |
| Shipping Weight |
44 lbs. |
| Flue Size |
5" |
| Water Inlet & Outlet (NPT) |
1/2 inch |
| Gas Inlet (NPT) |
1/2 inch |
| Water Pressure Range |
8 - 150 psi |
| Inlet Pressure Required |
11 inches W.C. LP /
7 inches W.C. NG |
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| Model WR430-3KV |
BOSCH's most powerful unit with 130,000 BTU (Natural Gas Model). Comes complete with a built-in corrosion resistant, whisper quiet power venter and electronic ignition. Allows you to vent 15 feet horizontally to an outside wall without special venting materials. Comes with extention terminal complete with anti draft-back flapper, and 36 inch power cable and plug. Suitable for same applications as WR400-1K.
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Technical Specifications:
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| Fuel Types Available: |
Natural Gas, Propane |
| Rated Input (BTU/hr.): |
125,000 LP / 130,000 NG |
| Minimum Input (BTU/hr.): |
28,000 |
| Thermal Efficiency/Energy Factor: |
82% / 0.78 |
| Fuel Consumption: |
30.6 to 121 (CuF/hr) NG /
1.5 to 5.8 (lbs/hr) LP |
| Ignition Type: |
electronic |
| Max. flow rate at 45F temp rise (GPM) |
5.0 |
| Max. flow rate at 100F temp rise (GPM) |
2.5 |
| Minimum Flow Rate (GPM) |
0.5 |
| Dimensions |
30 5/16" x 18 1/4" x 8 3/4" |
| Shipping Weight |
45 lbs. |
| Flue Size |
4" |
| Water Inlet & Outlet (NPT) |
1/2 inch |
| Gas Inlet (NPT) |
1/2 inch |
| Water Pressure Range |
13 - 150 psi |
| Inlet Pressure Required |
11 inches W.C. LP /
7 inches W.C. NG |
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| Model WR125-K |
Small and compact, this unit is popular in cottages, R.V, and marine, hot tubs, portable bush showers, animal grooming, mobile food service trucks, and other smaller applications.
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Technical Specifications:
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| Fuel Types Available: |
Natural Gas, Propane |
| Rated Input (BTU/hr.): |
40,000 NG |
| Minimum Input (BTU/hr.): |
20,000 |
| Thermal Efficiency: |
81% |
| Fuel Consumption: |
18.6 to 37 (CuF/hr) NG /
0.9 to 1.85 (lbs/hr) LP |
| Ignition Type: |
Piezo with pilot |
| Max flow rate at 45F temp rise (GPM) |
1.3 |
| Max flow rate at 100F temp rise (GPM) |
0.6 |
| Minimum Flow Rate (GPM) |
0.6 |
| Dimensions |
25 3/8" x 10 5/8" x 9 1/8" |
| Shipping Weight |
25 lbs. |
| Flue Size |
4" |
| Water Inlet & Outlet (NPT) |
1/2 inch |
| Gas Inlet (NPT) |
1/2 inch |
| Water Pressure Range |
13 - 150 psi |
| Inlet Pressure Required |
11 inches W.C. LP /
7 inches W.C. NG |
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