AquaStar 125BS Technical Information
Specification data recorded on this site for AquaStar 125BS Technical Information.
AquaStar 125BS (Solar) On Demand Water Heaters - Tankless Hot Water Heater Info
Tech/Specs for AquaStar 125BS Propane & Gas Solar Water Heater
General information for installing the Bosch AquaStar gas tankless solar water heater. See installation manuals for more detailed info about these quality on demand water heaters.
Installation info for the Aquastar gas water heater Model 125B, 125HX, 125X, 125BS and 125BL Follow information provided on this page. Installation and service must be performed by a qualified installer, service agency or the gas supplier. Other tips when venting the Aquastar 125BS gas water heater - it is best to rise 12" off top of hot water heater before making any 45 or 90 degree elbows , then rise ¼" per foot when running any horizontal vent pipe. Size gas line properly - make sure your installer reviews gas charts. Install the provided gas regulator with its directional arrow facing the gas flow path (also be sure to properly regulate Liquid Propane (LP) Natural Gas at source when supplying Aquastar Water Heaters), this small regulator that is provided is NOT to be used on a high pressure line.
·Required clearances
| MODEL Aquastar 125BS | Amount |
|---|---|
| TOP | 12" |
| FRONT | 4" |
| BACK | 0" |
| SIDES | 4" |
| FLOOR | 12" |
·Gas & Venting
Model Aquastar 125BS Solar Water Heater
·Dimensions
| Height | Width | Depth | Weight |
|---|---|---|---|
| 29-3/4" | 18-1/4" | 8-3/4" | 39 lbs. |
·Combustion Air Required
Model 125BS Solar Water Heater 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 Bosch Aquastar tankless water heater Model 125 B may be installed in compliance with this requirement
| Model | Volume | Area with an 8' ceiling |
|---|---|---|
| 125BS | 5,900 cubic feet | 738 square feet |
If the Bosch Aquastar Tankless Solar Hot Water Heater 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. This requirement reduces to 1 square inch per 4,000 Btu/hr if the air is taken from the outside. Note This calculation assumes normal rates of "infiltration" of outside air. A super-insulated, super-tight space/building may require outside air for the Bosch Aquastar water heater even though the volume/area of the space meets this application. Caution In addition to the above, the Bosch Aquastar 125BS gas water heater must be properly vented to ensure safe and efficient operation.
Need more information - read, download or print a full AquaStar 125 Series Manual. For all of the heaters - 125B, 125HX, 125BL and 125BS - just click below and follow directions.