Whenever you turn on a gas, propane or electric tankless water heater the hot water starts heating up as soon as the minimum flow rate is met for the hot water demand. It takes a few seconds for the water to get heated up to the requested temperature. But, before the hot water starts to flow out of your shower or sink faucet the cold water that is in the pipe has to be pushed through your faucet. This is often referred to as pushing a "cold water slug".
Customers frequently ask us how much water is contained in this cold water slug and how long it will take to push this slug through their faucet. This can be easily calculated by using the formula for the volume of a cylinder.
The formula for the volume of a cylinder is V = Pi x r x r x h
where Pi = 3.1416; r = the radius of the water line; and h = height (or in this case the length) of the line
If your water line is 1/2" then r = .25" and r x r = .0625" and Pi x r x r = 0.19635 square inches
If your water line is 3/4" then r = .375" and r x r = .1406" and Pi x r x r = 0.4417875 square inches
Now to get all units in inches calculate h (the length of the water line) by taking feet x 12". As an example let's assume we have a 40' water line of 1/2" pipe. 40' = 480" so we calculate the Volume as:
V = 0.19635 square inches x 480" = 94.248 cubic inches
Now there are 1728 cubic inches in a cubic foot and there are 7.48 gallons in a cubit foot. Therefore there are 0.0043 gallons in a cubic inch.
So, 94.248 cubic inches * 0.0043 gallons = 0.4 gallons of water.
If you are running this cold water slug through a 1 GPM sink faucet then it will take .4 x 60 seconds or 24 seconds to push the cold water slug through the 1 GPM faucet. Add a few more seconds for the tankless water heater to bring the water up to temperature and remember that there are about 15' of internal pipe in a gas or propane tankless water heater that also starts out with cold water. In this example it will take just more that 1/2 minute to get the hot water flowing out of the faucet.
Showing posts with label tankless water heater. Show all posts
Showing posts with label tankless water heater. Show all posts
Saturday, December 13, 2014
Tuesday, December 31, 2013
Clearance Pricing on Bosch Tankless Water Heaters
Are you looking to save $$ but demanding the quality of a Bosch Tankless Water Heater? Check out our Bosch Tankless Clearance Heaters!
Our Bosch clearance water heaters are fully warranted by the manufacturer and carry the full 15 year warranty on the heat exchanger and 5 year warranty on all parts. These clearance heaters are prior model tankless water heaters that Bosch has just recently taken out of their current water heater lineup.
We are Bosch's distributor for these clearance heaters. Just like with the current Bosch tankless water heaters, Bosch requires that the water heaters be installed by a licensed professional installer.
We also stock all of the venting and accessories that you will need to complete your installation.
Our quantities vary depending on the model you are seeking. Call us at 866.289.4652 for pricing and availability on these discounted Bosch tankless water heaters.
Our Bosch clearance water heaters are fully warranted by the manufacturer and carry the full 15 year warranty on the heat exchanger and 5 year warranty on all parts. These clearance heaters are prior model tankless water heaters that Bosch has just recently taken out of their current water heater lineup.
We are Bosch's distributor for these clearance heaters. Just like with the current Bosch tankless water heaters, Bosch requires that the water heaters be installed by a licensed professional installer.
We also stock all of the venting and accessories that you will need to complete your installation.
Our quantities vary depending on the model you are seeking. Call us at 866.289.4652 for pricing and availability on these discounted Bosch tankless water heaters.
Wednesday, March 20, 2013
New Greentherm PP Concentric up and out vent kit
New for the Bosch Greentherm C 950 ES & C 1050 ES is the polypropylene concentric up-and-out venting kit consisting of the appliance adapter, a 90° elbow, and a termination. This is the simplest and quickest venting option possible for a condensing tankless unit. The outer metal pipe and the inner polypropylene pipe make it both lightweight and rigid. The termination is telescopic to allow for varying wall thicknesses.
This new PP concentric up and out vent kit is approved for the New Green Therm C950ES & C1050ES tankless water heaters. The PP concentric up and out vent kit is also approved for the Bosch Therm C950ES & C1050ES.
Before attaching the appliance adapter to the top of the heater, a second metal plate comes with the kit and would cover the other intake air hole. Then you would want to remove the exhaust collar from the top middle of the heater and then attach the appliance adapter as this will enable the heater to exhaust to the outside and also take its combustion air down the outer side of the same hole.
The Greentherm models C 950 ES & C1050ES are also approved for PP twin-pipe venting systems. Availability of generic PP vent pipe has increased and systems are becoming more popular due to ease of installation. The twin pipe installation would be used if the customer needed to go out a different area out the sidewall or through the roof and would need to take the combustion air from the outside also.
This new PP concentric up and out vent kit is approved for the New Green Therm C950ES & C1050ES tankless water heaters. The PP concentric up and out vent kit is also approved for the Bosch Therm C950ES & C1050ES.
Before attaching the appliance adapter to the top of the heater, a second metal plate comes with the kit and would cover the other intake air hole. Then you would want to remove the exhaust collar from the top middle of the heater and then attach the appliance adapter as this will enable the heater to exhaust to the outside and also take its combustion air down the outer side of the same hole.
Bosch Greentherm PP concentric up and out vent kit (7738003210)
Tuesday, March 12, 2013
New Bosch Greentherm C 950 ES Condensing Tankless Water Heater
The New Bosch Greentherm C 950 ES Condensing tankless water heater is a top performance, fully condensing gas tankless water heater from Bosch. This 175,000 BTU heater is designed for residential or commercial applications and can deliver hot water up to 140 degrees F with a 9.2 GPM flow rate. Not approved for space heating applications.
This Energy Star approved tankless water heater can produce enough hot water for 2 major applications in most homes. The Greentherm C 950 ES is now 93% energy efficient.
Unlike traditional non-condensing models, condensing technology captures heat from the exhaust gas and uses it to preheat the incoming cold water. This increases efficiency and reduces emissions -- well ahead of the 2012 Low NOX emissions standards set by SCAQMD (California -- South Coast Air Quality Management District). The Greentherm C950ES now has NSF Certification (National Sanitation Foundation) for commercial kitchens. The Bosch Green Therm C950ES now has an added bypass tube connecting the cold and hot water lines inside the unit so the heater can mix a little cold water with the hot to alleviate and fluctuations and maintan a more stable temperature. Standard now also are three NTC temperature sensors. With a new sensor immediately after the HEX, the Greentherm achieves benchmark temperature control. The NTCs are no longer clipped on, but rather installed into the inlet and outlet pipes.
The Bosch Greentherm C 950 ES features an electronic ignition system and can vent through either 3 inch or 4 inch diameter PVC vent pipe either through the side wall or up through the roof. The Greentherm C950ES now takes a new concentric venting system and attaches right to the top of the heater and takes its intake air and exhaust out through one hole to the outside. The Greentherm C950ES can now be cascaded together with up to 4 units and they can all vent into one pipe using a special venting kit to the outside. Installation can be done venting up to 4 units together into the one pipe having the heaters mounted side by side or back to back. The combustion air for the units will need to be taken from the inside of the building.
The Bosch Greentherm C 950 ES comes with builtin freeze protection. The Greentherm 950ES also comes with an external water filter screen. The Bosch Greentherm C950ES does not come with a 3/4" pressure relief valve, this is an accessory that would have to be ordered seperately.
The freeze prevention kit is designed to provide protection for the water heater down to approximately 5°F for short term conditions only. It will not protect the appliance in areas where the temperature is routinely expected to be below freezing. The freeze prevention kit will not protect plumbing outside the appliance from freezing.
The Bosch Greentherm C 950 ES comes with a limited 15 year warranty on the heat exchanger and 5 years on all other parts. Service and labor costs are not covered.
Unlike traditional non-condensing models, condensing technology captures heat from the exhaust gas and uses it to preheat the incoming cold water. This increases efficiency and reduces emissions -- well ahead of the 2012 Low NOX emissions standards set by SCAQMD (California -- South Coast Air Quality Management District). The Greentherm C950ES now has NSF Certification (National Sanitation Foundation) for commercial kitchens. The Bosch Green Therm C950ES now has an added bypass tube connecting the cold and hot water lines inside the unit so the heater can mix a little cold water with the hot to alleviate and fluctuations and maintan a more stable temperature. Standard now also are three NTC temperature sensors. With a new sensor immediately after the HEX, the Greentherm achieves benchmark temperature control. The NTCs are no longer clipped on, but rather installed into the inlet and outlet pipes.
The Bosch Greentherm C 950 ES features an electronic ignition system and can vent through either 3 inch or 4 inch diameter PVC vent pipe either through the side wall or up through the roof. The Greentherm C950ES now takes a new concentric venting system and attaches right to the top of the heater and takes its intake air and exhaust out through one hole to the outside. The Greentherm C950ES can now be cascaded together with up to 4 units and they can all vent into one pipe using a special venting kit to the outside. Installation can be done venting up to 4 units together into the one pipe having the heaters mounted side by side or back to back. The combustion air for the units will need to be taken from the inside of the building.
The Bosch Greentherm C 950 ES comes with builtin freeze protection. The Greentherm 950ES also comes with an external water filter screen. The Bosch Greentherm C950ES does not come with a 3/4" pressure relief valve, this is an accessory that would have to be ordered seperately.
The freeze prevention kit is designed to provide protection for the water heater down to approximately 5°F for short term conditions only. It will not protect the appliance in areas where the temperature is routinely expected to be below freezing. The freeze prevention kit will not protect plumbing outside the appliance from freezing.
The Bosch Greentherm C 950 ES comes with a limited 15 year warranty on the heat exchanger and 5 years on all other parts. Service and labor costs are not covered.
Thursday, November 22, 2012
Thanksgiving Day Sale on Greenstar Boilers & Tankless Water Heaters
Pro Water Heater Supply is excited to offer special Thanksgiving Day / Black Friday / Cyber Monday sale pricing on all Bosch Tankless Water Heaters and all Bosch Greenstar Boilers.
We carry the full line of all current Bosch tankless water heaters, including the Bosch 1050ES, Bosch 1210ES and the very popular Bosch 520PN / 520 HN units. The Bosch 520 series heaters are available in both natural gas and propane and require no electricity!
We also have special pricing on the very popular Bosch 660EF indoor tankless water heaters and the Bosch 660EFO outdoor tankless water heaters. Did you know that we are the only source for the correct Bosch 660EF Adaptor that is needed for all Bosch 660EF installations?
In addition to the full line of current Bosch tankless water heaters we are the exclusive outlet for prior model units, such as the Bosch Integra 500 (199,000 BTU Condensing) and the Bosch Evolution 500 (199,000 BTU Non-condensing). We still have a large quantity of these Clearance Heaters and they are priced Thanksgiving Day, Black Friday and Cyber Monday to move!
Looking for a Bosch Greenstar Combi 151 Boiler or Bosch Greenstar Combi 100 Boiler? We have these and the other Greenstar straight boilers for sale at a deep discount promotional price. The Bosch Combi boilers are our most popular wall-hun condensing boilers as they provide for both space heating and domestic hot water (DHW).
We carry the full line of all current Bosch tankless water heaters, including the Bosch 1050ES, Bosch 1210ES and the very popular Bosch 520PN / 520 HN units. The Bosch 520 series heaters are available in both natural gas and propane and require no electricity!
We also have special pricing on the very popular Bosch 660EF indoor tankless water heaters and the Bosch 660EFO outdoor tankless water heaters. Did you know that we are the only source for the correct Bosch 660EF Adaptor that is needed for all Bosch 660EF installations?
In addition to the full line of current Bosch tankless water heaters we are the exclusive outlet for prior model units, such as the Bosch Integra 500 (199,000 BTU Condensing) and the Bosch Evolution 500 (199,000 BTU Non-condensing). We still have a large quantity of these Clearance Heaters and they are priced Thanksgiving Day, Black Friday and Cyber Monday to move!
Looking for a Bosch Greenstar Combi 151 Boiler or Bosch Greenstar Combi 100 Boiler? We have these and the other Greenstar straight boilers for sale at a deep discount promotional price. The Bosch Combi boilers are our most popular wall-hun condensing boilers as they provide for both space heating and domestic hot water (DHW).
Saturday, November 3, 2012
Bosch Therm 660EF / 660EFO Tankless Water Heater Sale
For a limited time the Bosch Therm 660EF indoor tankless water heaters and Bosch Therm 660EFO outdoor tankless water heaters are on sale for a special low price. The Bosch 660EF/EFO heaters are 140,000 BTU direct vent tankless water heaters and they are available in both natural gas and propane models. They require 120V power for the fan forced exhaust.The Bosch Therm 660EF indoor tankless water heaters require 3" single-wall stainless steel vent pipe and are designed to be vented either through the roof or out the side wall.
The following four models are available for same-day shipping:
- Bosch Therm 660EF-NG (Natural Gas)
- Bosch Therm 660EF-LP (Liquid Propane)
- Bosch Therm 660EFO-NG (Natural Gas)
- Bosch Therm 660EFO-LP (Liquid Propane)
Check out our special discounted pricing as these heaters are available at this reduced pricing while supplies last.
Also consider purchasing the following:
Saturday, June 30, 2012
7 Ways to Heat Domestic Hot Water with Bosch Products
Are you looking to heat your domestic hot water (DHW) for your showers, sinks, dishwasher and washing machine? If so, Bosch offers 7 different ways to achieve this goal in highly efficient ways! This blog entry provides a detailed comparison of the different ways Bosch can help you heat your DHW.
1) Bosch Therm gas and propane condensing tankless water heaters. Bosch offers several models of condensing tankless water heaters ranging from 175,000 BTUs up to 225, 000 BTUs. These electronic-ignition tankless water heaters have a secondary condensing heat exchanger that reclaims heat and redirects this heat back to the water thus reducing the exhaust temperature. As a result the exhaust temperature is cool enough to be exhausted via 3" or 4" PVC or CPVC piping. These heaters are generally about 92% efficient and can produce enough hot water for 2 to 3 showers at a time, depending on where you live.
2) Bosch Therm gas and propane non-condensing tankless water heaters. Bosch offers several models of non-condensing tankless water heaters ranging from 75,000 BTUs up to 199,000 BTUs. On the higher end from 175,000 BTUs up to 199,000 BTUs the Bosch tankless water heaters have an electronic ignition and require special 3" or 4" stainless steel venting. These heaters are about 82% efficient and are a great solution for most families. On the lower end the heaters range from 75,000 to 117,000 BTUs and have either a standing pilot light or use Bosch's patented Hydro Ignition system. These heaters are perfect for "off-grid" installations or areas with frequent electricity outages. In the mid-range Bosch offers both indoor and outdoor electric-ignition 140,000 BTU heaters that require 3" stainless steel vent pipe.
3) Bosch Tronic electric tankless water heaters. The Bosch Tronic line of electric tankless water heaters are available both in whole-house models (Tronic 5000 Series) or in point-of-use models (Tronic 3000 Series). Both the Tronic 5000 and 3000 Series heaters are tankless and will produce endless hot water. Be sure to verify that your electric supply meets the minimum requirements for these heaters. The Amperage is the key.
4) Bosch Ariston Pro Ti electric mini-tank water heaters. The Ariston Pro Ti line of mini tanks range from 2.5 gallons up to 7 gallons. Like a regular hot water tank, these mini-tank heaters keep water hot and ready for use in highly efficient glass-lined tanks. These heaters are perfect for point-of-use applications, but will generally be insufficient for showers. The heaters plug directly into a 110 wall outlet and draw only 12.5 Amps.
5) Bosch Compress 3000 HP 200-1 heat pump. The 50 gallon Bosch Compress heat pump is a great addition to the Bosch line of domestic hot water heating products. This ultra efficient water heater uses technology similar to an EnergyStar qualified refrigerator. Rather than taking heat from the inside of the appliance and moving it outside as a refrigerator does; the Bosch heat pump technology takes heat from outside the appliance and uses it to heat the water!
6) Bosch Greenstar Combi Boilers. Bosch offers two Greenstar Combination ("Combi") boilers ranging from 100,000 BTUs up to 151,000 BTUs. Each of these two Combi boilers can heat hot water for space heating as well as provide for a domestic hot water loop. These wall-hung, gas-fired condensing boilers are highly efficient. They come ready for natural gas and include a kit to swap over to propane use. Heating DHW with a Greenstar Combi boiler is perfect for homes that require hot water for their space heating needs.
7) Bosch Greenstar Boilers with Indirect Tanks. The Bosch Greenstar lineup of space heating boilers includes four gas-fired condensing boilers ranging from 57,000 BTUs up to 151,000 BTUs. Heating DHW with a Bosch Greenstar space heating boiler is simple when used in combination with a Bosch SST Stainless Steel Indirect Storage tank. Bosch offers four models of indirect storage tanks ranging from 40 gallons up to 119 gallons. The boiler heats a coil that runs through the indirect storage tank which in turn heats the potable water in the tank.
With seven different ways to heat DHW, Bosch offers a solution for just about any application or need.
1) Bosch Therm gas and propane condensing tankless water heaters. Bosch offers several models of condensing tankless water heaters ranging from 175,000 BTUs up to 225, 000 BTUs. These electronic-ignition tankless water heaters have a secondary condensing heat exchanger that reclaims heat and redirects this heat back to the water thus reducing the exhaust temperature. As a result the exhaust temperature is cool enough to be exhausted via 3" or 4" PVC or CPVC piping. These heaters are generally about 92% efficient and can produce enough hot water for 2 to 3 showers at a time, depending on where you live.
2) Bosch Therm gas and propane non-condensing tankless water heaters. Bosch offers several models of non-condensing tankless water heaters ranging from 75,000 BTUs up to 199,000 BTUs. On the higher end from 175,000 BTUs up to 199,000 BTUs the Bosch tankless water heaters have an electronic ignition and require special 3" or 4" stainless steel venting. These heaters are about 82% efficient and are a great solution for most families. On the lower end the heaters range from 75,000 to 117,000 BTUs and have either a standing pilot light or use Bosch's patented Hydro Ignition system. These heaters are perfect for "off-grid" installations or areas with frequent electricity outages. In the mid-range Bosch offers both indoor and outdoor electric-ignition 140,000 BTU heaters that require 3" stainless steel vent pipe.
3) Bosch Tronic electric tankless water heaters. The Bosch Tronic line of electric tankless water heaters are available both in whole-house models (Tronic 5000 Series) or in point-of-use models (Tronic 3000 Series). Both the Tronic 5000 and 3000 Series heaters are tankless and will produce endless hot water. Be sure to verify that your electric supply meets the minimum requirements for these heaters. The Amperage is the key.
4) Bosch Ariston Pro Ti electric mini-tank water heaters. The Ariston Pro Ti line of mini tanks range from 2.5 gallons up to 7 gallons. Like a regular hot water tank, these mini-tank heaters keep water hot and ready for use in highly efficient glass-lined tanks. These heaters are perfect for point-of-use applications, but will generally be insufficient for showers. The heaters plug directly into a 110 wall outlet and draw only 12.5 Amps.
5) Bosch Compress 3000 HP 200-1 heat pump. The 50 gallon Bosch Compress heat pump is a great addition to the Bosch line of domestic hot water heating products. This ultra efficient water heater uses technology similar to an EnergyStar qualified refrigerator. Rather than taking heat from the inside of the appliance and moving it outside as a refrigerator does; the Bosch heat pump technology takes heat from outside the appliance and uses it to heat the water!
6) Bosch Greenstar Combi Boilers. Bosch offers two Greenstar Combination ("Combi") boilers ranging from 100,000 BTUs up to 151,000 BTUs. Each of these two Combi boilers can heat hot water for space heating as well as provide for a domestic hot water loop. These wall-hung, gas-fired condensing boilers are highly efficient. They come ready for natural gas and include a kit to swap over to propane use. Heating DHW with a Greenstar Combi boiler is perfect for homes that require hot water for their space heating needs.
7) Bosch Greenstar Boilers with Indirect Tanks. The Bosch Greenstar lineup of space heating boilers includes four gas-fired condensing boilers ranging from 57,000 BTUs up to 151,000 BTUs. Heating DHW with a Bosch Greenstar space heating boiler is simple when used in combination with a Bosch SST Stainless Steel Indirect Storage tank. Bosch offers four models of indirect storage tanks ranging from 40 gallons up to 119 gallons. The boiler heats a coil that runs through the indirect storage tank which in turn heats the potable water in the tank.
With seven different ways to heat DHW, Bosch offers a solution for just about any application or need.
Friday, May 25, 2012
Bosch Tronic 5000 WH17 & WH27
Bosch Tronic 5000 WH 17 & WH27 Electric Tankless Water Heaters
Ideal for replacing your electric storage tank water heater. The Bosch Tronic 5000 WH17 & WH27 electric whole house tankless water heaters are compact and powerful and can be installed virtually anywhere inside the home. Advantages include endless hot water, reduced electricity costs and substantial space savings.
Designed to replace a 20 - 40 gallon electric tank. The Bosch Tronic WH17 & Bosch Tronic WH27 electric tankless water heaters are built to last. They have Plastic Polymer Modules and brass fittings. Each heater module is protected by an electro-mechanical thermal cut-out. If the temperature of any of the heater modules gets too high (over 195 degrees), then the cut-out will trip and cut the power to that heater module. If the cut-out trips, it must be reset while the circuit breakers are off. If you are not comfortable or qualified to perform this task, consult the original installer or a licensed electrician. This cut-out will only trip in exceptional circumstances. These small electric tankless water heaters can be installed virtually anywhere in the home and, of course, produce an endless supply of hot water.
There are many changes in the new Bosch Tronic 5000 WH17 and the WH27 compared to the older models Powerstream Pro RP17PT and RP27PT.
The new improvements for the Bosch Tronic 5000 WH17 and the WH27are:
Ideal for replacing your electric storage tank water heater. The Bosch Tronic 5000 WH17 & WH27 electric whole house tankless water heaters are compact and powerful and can be installed virtually anywhere inside the home. Advantages include endless hot water, reduced electricity costs and substantial space savings.
Designed to replace a 20 - 40 gallon electric tank. The Bosch Tronic WH17 & Bosch Tronic WH27 electric tankless water heaters are built to last. They have Plastic Polymer Modules and brass fittings. Each heater module is protected by an electro-mechanical thermal cut-out. If the temperature of any of the heater modules gets too high (over 195 degrees), then the cut-out will trip and cut the power to that heater module. If the cut-out trips, it must be reset while the circuit breakers are off. If you are not comfortable or qualified to perform this task, consult the original installer or a licensed electrician. This cut-out will only trip in exceptional circumstances. These small electric tankless water heaters can be installed virtually anywhere in the home and, of course, produce an endless supply of hot water.
There are many changes in the new Bosch Tronic 5000 WH17 and the WH27 compared to the older models Powerstream Pro RP17PT and RP27PT.
The new improvements for the Bosch Tronic 5000 WH17 and the WH27are:
- The units overall height is shortened by 4 inches due to reconstruction and placement of the main PCB board in the bottom of the unit. (WH17 PCB Board #8-738-701-732, WH27 PCB Board #8-738-701-738).
- The Heating element assembly modules inside the unit have been redesigned to change the flow of the water in the modules to a different angle so as to not allow the mineral deposits to build up on the elements.
- There has been new single triac and dual triac PCB boards attached to the top of the heating modules as to give the heater more sensibility and maintain a more consistant heat. (Single Triac PCB #8-738-701-733, Dual Triac PCB #8-738-701-723).
- The Thermal Cutouts on the top of the heating modules have been redesigned to trip at a little lower temperature of 195 degrees F to keep the elements from being damaged and overheating and hurting the piping and modules.
The minimum activation rate required for the unit to activate. (Activation rates: WH17 = 0.6 GPM, WH27 = 0.8 GPM).
The WH17 & WH27 are designed for cold potable water only. These water heaters are not designed for preheated water or recirculation applications. Increase flow rate where ever possible if water is coming out too hot.
Verify incoming water supply is at least 30psi. For people on well systems, the recommended pressure range is 30-50psi.
Maximum flow rates for each unit are as follows. WH17 = 2.3gpm, WH27 = 3.5gpm.
Monday, September 19, 2011
Flow & Temperature Adjustment for Bosch Therm 330PN
The new Bosch Therm 330PN comes in either natural gas or liquid propane and has a control knob for adjusting the water flow and a slide adjustment for adjusting the heat on the front of the heater.
The Bosch Therm 330PN is a 75,000 BTU Gas Tankless Water Heater. This gas tankless water heater is for camps, cottages and low water flow applications. The control knob on the right is the Temperature Adjustment knob and is for adjusting the flow of water through the heater which has the ability to speed the flow of water up making it cooler or slowing it down and making it hotter. The slide control in the middle is for adjusting the temperature of of the water by adjusting the height of the flame. When the slide is positioned on the small flame symbol the burners will be low and when the slide is on the high flame symbol the burners will get higher and the temperature hotter.
Below is how turning the Temperature Adjustment knob effects the heater:
Below is how turning the Temperature Adjustment knob effects the heater:
| Knob Position | Clockwise | Counter-clockwise | ||
| Degree Rise | 90° F | 45° F | ||
| Activation Rate | 0.5 GPM | 1.1 GPM | ||
| Max Flow Rate | 1.3 GPM | 2.6 GPM |
As the temperature adjustment knob is turned counter-clockwise, the output temperature will lower and the activation rate of the heater will be raised. Turning the knob clockwise will raise the temperature and lower the activation rate.
When sliding the slide adjustment to the left, (small flame symbol) the heater will give lower flame and cooler temperatures and sliding the slide to the right will give hotter tenmperatures and a higher flame.
When sliding the slide adjustment to the left, (small flame symbol) the heater will give lower flame and cooler temperatures and sliding the slide to the right will give hotter tenmperatures and a higher flame.
The Bosch Therm 330PN has a gas control slide that modulates burner input in response to flow. Its purpose is to ensure that the hot water temperature will remain steady, although the water flow demand might vary.
Saturday, June 11, 2011
Bosch Therm 660EF/660EFO Tankless Water Heaters
The new Bosch Therm 660 EF and Bosch 660 EFO are direct vent units. These units take thier combustion air from the area they are installed in. The 660EF/EFO are compact in design for space saving installations and are only 14" x 20 1/2" x 7". The 660EF/EFO are designed and approved for reciculation and space heating applications. The units have electronic ignition and come equipped with built in freeze protection. The Bosch Therm 660EF vents either vertically or horizontally using 3" or 4" stainless steel venting #AL29-4C.
The 660EF is manufactured in Japan and comes with a different vent connection than the 830ES, 940ES, etc. The 660EF needs to be vented with single wall stainless steel venting and is designed to connect directly to "Bosch Vent". However, a Z-Vent adapter (Part # 2SVSWB03) allows for the use of 3" Z-vent stainless venting to be used. Global Pro Tankless Supply carries the adapter and all the Z-Vent stainless steel venting to install the Bosch Therm 660EF. We are the exclusive distributor for the AQ5EF Side-wall Vent Kit for the Bosch 660EF tankless water heater.
The Bosch Therm 660EFO outdoor unit comes ready for installation and does not require any additional cap or venting.
Without the Z-Vent adapter (Part # 2SVSWB03), the customer would have to purchase different venting ("Bosch Vent") to use for the 660EF.
The Bosch Therm 660 EFO is our most compact outdoor model and is loaded with features you’d expect from Bosch, including freeze protection and built-in high temperature capability (160°F).
The Bosch Therm 660 EFO is a good replacement for the GWH425HNO and the 125BO as these units have been discontinued.
The Bosch Therm 660EF and Bosch Therm 660EFO have an excellent warranty:
The 660EF is manufactured in Japan and comes with a different vent connection than the 830ES, 940ES, etc. The 660EF needs to be vented with single wall stainless steel venting and is designed to connect directly to "Bosch Vent". However, a Z-Vent adapter (Part # 2SVSWB03) allows for the use of 3" Z-vent stainless venting to be used. Global Pro Tankless Supply carries the adapter and all the Z-Vent stainless steel venting to install the Bosch Therm 660EF. We are the exclusive distributor for the AQ5EF Side-wall Vent Kit for the Bosch 660EF tankless water heater.
The Bosch Therm 660EFO outdoor unit comes ready for installation and does not require any additional cap or venting.
Without the Z-Vent adapter (Part # 2SVSWB03), the customer would have to purchase different venting ("Bosch Vent") to use for the 660EF.
The Bosch Therm 660 EFO is our most compact outdoor model and is loaded with features you’d expect from Bosch, including freeze protection and built-in high temperature capability (160°F).
The Bosch Therm 660 EFO is a good replacement for the GWH425HNO and the 125BO as these units have been discontinued.
The Bosch Therm 660EF and Bosch Therm 660EFO have an excellent warranty:
- 15 year limited warranty on heat exchanger; 3 year warranty if used in direct recirculating applications
- 15 year warranty on heat exchanger if used if recirculated through a storage tank such as the Ariston mini-tank
- 5 year warranty on all other parts
Monday, April 25, 2011
Bosch Therm C1210ES/ESC vs Bosch Pro GWH C920ES/ESC
Recently the Bosch Pro GWH C920ES/ESC was changed to the new model name Bosch Therm C1210ES/ESC. The model name was changed to reflect gallons per minute (gpm) at a 35 degree temperature rise. So the Bosch Therm C 1210 ES/ESC reflects a 35 degree temperature rise at 12.1 gpm. Along with this name change came many new features:
The temperature range for the Bosch C1210ES is from 100 - 140 degrees. With the use of the Bosch Therm High Temperature Kit the unit would have the ability to reach up to 180 degrees.
- Comes equipped with freeze prevention now.
- Has the capability to accept preheated water up to 140 degrees and is approved for Domestic Hot Water (dhw) and space heating applications in conjunction with an indirect tank.
- Has the ability to be cascaded using the Intelligent Cascade Kit for up to 24 units and would produce up to 290 gpm.
The temperature range for the Bosch C1210ES is from 100 - 140 degrees. With the use of the Bosch Therm High Temperature Kit the unit would have the ability to reach up to 180 degrees.
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