How To Repair Water Valve On Bosch Aquastar Aq 125 Blp Tankless Water Heater
BOSCH AquaStar Tankless Propane and Natural Gas Water Heaters The BOSCH AquaStar tankless water heaters are redefining how homeowners throughout North America heat their water. Tankless hot water heaters provide endless hot water, save energy and save space. Sized for most homes and small businesses the BOSCH 125 Series water heaters supply one major hot water outlet at a time [e.g. One shower running at a time]. Delivers up to 3.5 gallons per minute.
The revolutionary hydro-generated ignition system incorporates hydro technology into a domestic water heating appliance.
How tankless (demand hot water) heaters work: 2. The water is heated as it flows through the heating elements or heat exchanger. As the water flow varies, the unit adjusts the heating elements or burner flame to maintain a constant temperature and maximum energy efficiency. 3. When the hot water tap is turned off, the heating system also turns off. What you save when using a tankless heater: When water is heated in a tank, the inside walls will soon begin to build up mineral deposits. The scale build up on the bottom of the tank can cause it to decrease in efficiency by as much as 50% over 10 years and the subsequent corrosion of the tank's inside wall will eventually cause it to leak.
1. When you open a hot water tap, cold water enters the heater and triggers the heating elements or burners. Your hot water tap acts as an ignition key for the energy used to heat the hot water you need.
Your water heater is the second biggest consumer of energy in your home [after home heating]. Therefore it is where you can significantly reduce the costs of your annual energy consumption. Why keep a storage tank full of hot water 24 hours a day when the average household use is less than an hour everyday?
Bosch The ProTankless� Gas Water Heaters Specifications | |||
| GWH 425 HN | GWH 425 EF | ||
| Technical Specifications | |||
| Rated input (BTU/HR) | 117,000 | 130,000 NG / 125,000 LP | |
| Efficiency | Thermal | 80% NG / 83% LP | 80% NG / 82% LP |
| Energy Factor | .85 NG / .84 LP | .78 NG / .81 LP | |
| Min. flow rate (GPM) | .5 | .5 | |
| Power Input (Btu) | NG | 28,000 - 117,000 | 28,000 - 130,000 |
| LP | 28,000 - 117,000 | 28,000 - 125,000 | |
| Ignition | Hydro-Generated* | Electronic | |
| Modulating Gas Valve | NA | Yes | |
| Voltage | N/A | 120 VAC | |
| Vent Size | 5" | 4" | |
| Vent Options | Conventional Flue | Power Vented Through Sidewall | |
| Capacity | 4.25 GPM @ 45�F rise | 4.25 GPM @ 45�F rise | |
| Dimensions (inches) | Height | 29�" | 29�" |
| Width | 18�" | 18�" | |
| Depth | 8�� | 8�� | |
| Weight (lbs) | 40 | 44 | |
| Flow Rates (GPM) | |||
| 90� F rise | 2.1 | 2.3 | |
| 75� F rise | 2.4 | 2.7 | |
| 65� F rise | 2.9 | 3.3 | |
| 55� F rise | 3.4 | 3.8 | |
| 45� F rise | 4.2 | 4.6 | |
| Life Expectancy | 20+ years | 20+ years | |
| Installation Specifications | |||
| Gas Connection | �" Male NPT | �" Male NPT | |
| Water Connection | �" Male NPT | �" Male NPT | |
| NG Gas Pressure | Min | 7" WC | 7" WC |
| Max | 14" WC | 14" WC | |
| LP Gas Pressure | Min | 11" WC | 11" WC |
| Max | 14" WC | 14" WC | |
| Water Pressure (psi) | Min | 30 | 18 |
| Max | 150 | 150 | |
| Electrical Supply | None | 120 volts/1.2 amps (plugs in) | |
| Vent Size | 5" (double-wall type B) | 4" (single-wall stainless or galvanized) | |
| Optional Accessories | Power Vent Kit - AQ1 | Horizontal Vent Terminator - FXHOOD (FXHOOD required) | |
Previous model information:
| Specs | 125HX | 125FX w FXHood |
| by Model | ||
| Efficiency | NG: 80%; LP: 83% | NG: 80%; LP: 82% |
| @ 55�F Rise | 3.3 | 3.3 |
| @ 65�F Rise | 2.8 | 2.8 |
| @ 75�F Rise | 2.4 | 2.4 |
| @ 90�F Rise | 2 | 2 |
| BTU Input | 117,000 | 125,000 |
| Energy Factor | 0.78 | 0.78 |
| GPM@ 45�F | 4 | 4 |
| Net Weight | 40 lbs. | 44 lbs. |
| Optional Accessories | Power Vent |
Product Features:
- All water parts are high quality copper and plastic
- Unit is constructed with stainless steel and aluminium
- Casing is finished with baked epoxy
- Heat exchanger is made of solid copper
- Burners are made of stainless steel
- Unit has a safety thermocouple and overheat shutoff protection
- CSA design certified, Compliant with ASHRAE 90.1
| Model | Input (BTU) | Efficiency | GPM Flow Rate @ 55�F rise | Vent Type | Vent Size | Ignition System | Activation Flow in GPM | Heat Exchanger Warranty |
| 125HX | 117,000 | 82% | 3.3 | Natural | 5" | Hydro | 0.5 | 12 Years |
| 125FX | 130,000 | 80% | 3.6 | Forced | 4" | Electronic | ||
| 250SX | 175,000 | 87% | 5.2 | Direct | 3" | Electronic | 0.8 | |
| 250SXO |
Manufacturer's Warranty:
- 12 years on the heat exchanger when professionally installed
- Proper product selection supported by customer service agent
- Proper operation supported by solar engineer tech assistance
- Toll-Free help line and/or online e-mail tech support
Product Benefits:
- Endless hot water for the home or office
- Can reduce energy costs up to 50%
- Never stores hot water [preventing rust and leaks]
- High energy factors [cuts greenhouse gas emissions up to 50% compared to storage tank]
- Steady temperature at varying flow rates
- Small, light and easy to install
- Hangs on wall - saving floor space
- Stores only cold water, reducing the risk of bacteria growth
- Designed and built to last 20+ years
- 82% efficient for life of the heater
- Natural gas/propane energy factor of .69-.84 [tanks .52-.62]
- Electric energy factor of .99 [tanks .80-.90]
Link to Bosch web site
How To Repair Water Valve On Bosch Aquastar Aq 125 Blp Tankless Water Heater
Source: https://www.stratenergy.ca/bosch_tankless.htm
Posted by: harrissonterver.blogspot.com
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