Low Stock for Bosch Therm 660EFO NG (Natural Gas)

GlobalTowne has a few of the Bosch Therm 660EFO NG (Natural Gas) tankless water heaters in stock.  The Therm 660 EFO NG is compact and is designed to be installed outdoors in approved non-freezing areas. But don't let the size fool you. This model is loaded with features including freeze protection and built-in high temperature capability (160 degrees F)..  The 660EFO NG is 140,000 BTU and will run 1-2 showers at the same time.  Please call to order soon while supplies last.  Please see more specifications listed below:

Bosch Therm 660EFO NG Specifications:

• Electronic Ignition
• Requires 120V electrical connection
• 140,000 BTU
• Outdoor Installation (no venting required)
• 35 Degree Temp rise @ 6.6 GPM
• 45 Degree Temp rise @ 5 GPM
• .82 % Efficiency
• 3/4" Bottom water/gas connections

Please call GlobalTowne at 888-726-9752 for further information or to place an order.

Bosch Therm 830ES/940ES/940ESO Gas Tankless Water Heaters

GlobalTowne has just added the Bosch 830ES, 940ES and 940ESO units to our website. The Bosch Therm 830ES and 940ES replaces the older retail units Bosch 2400ES and Bosch 2700ES. The 830ES and 940ES are direct replacements for the older 2400ES and 2700ES.  the only difference is the part number.  The Bosch Therm 940ESO is an outdoor unit and comes with the Bosch Therm Outdoor Kit (BTOK). Below are more specifications on the heaters and a link to them off our website.

Bosch Therm 830ES
175,000 BTU
Comes in either Natural Gas (NG) or Liquid Propane (LP)
Good for 2 applications at a time
3/4" water/gas connections
Venting is 3" single wall stainless steel
Energy Factor .83
Weight 67 lbs
Size 30.5 x 17.875 x 11.25

Bosch Therm 940ES
199,000 BTU
Comes in either Natural Gas (NG) or Liquid Propane (LP)
Good for 2-3 applications at a time
3/4" water/gas connections
Venting is 3" single wall stainless steel
Energy Factor .83
Weight 67 lbs
Size 30.5 x 17.875 x 11.25

Bosch Therm 940ESO (Outdoor Unit)
199,000 BTU
Comes in either Natural Gas (NG) or Liquid Propane (LP)
Good for 2-3 applications at a time
3/4" water/gas connections
Comes with BTOK for outdoor installation
Energy Factor .83
Weight 72 lbs
Size 30.5 x 17.875 x 11.25

Please call GlobalTowne at 888-726-9752 for further questions or to place an order.

Venting a Bosch Therm 330PN into an Existing Chimney

The Bosch Therm 330PN is a naturally drafting gas tankless water heater and must be vented to the outside using a minimum of a 4" diameter galvanized type B gas vent.  Under no circumstances should the vent pipe be reduced in size.  There must be a minimum of a 12" rise off the top of the heater before any 45's or 90 degree elbows.  If there is to be a horizontal section before going into the chimney then try and keep it as short as possible.  The maximum horizontal run allowed is half of the total vertical vent height.  45's, 90 degree elbows and any horizontal length is not to be considered in the total gas vent height.

The Chimney the Bosch 330 PN tankless water heater is venting into must be the only thing going into the chimney.  The galvanized type B gas vent must run all the way up the chimney to an approved rain cap.  The minimum vertical vent height is 6 ft and any horizontal vent connectors or elbows are not to be considered in the total gas vent height.  All gas vent sections of pipe must be screwed together with sheet metal screws and properly supported.  The Bosch 330 PN may be vented into the chimney alone as long as it is lined with the correct tile or metal ling.  Consult local codes for proper lining of chimney.  You may not vent any other fuel burning appliances into any free space remaining in the chimney.  Please see the illustration below for venting into the chimney and always follow the instructions listed in the installation manual for the heater.

A = Minimum of 6 ft. rise
1.  Listed approved Rain Cap
2.  Horizontal vent connection rising 1/4" per ft.
3.  Establish a 12" rise before any elbows

Venting a Bosch Therm 520PN or 520HN into an Existing Chimney

The Bosch Therm 520PN and Bosch Therm 520HN are both naturally drafting gas tankless water heaters and must be vented to the outside using a minimum of a 5" diameter galvanized type B gas vent.  6" diameter type B gas vent is required for all installations over 2,000 ft above sea level.  Under no circumstances should the vent pipe be reduced in size.  There must be a minimum of a 12" rise off the top of the heater before any 45's or 90 degree elbows.  If there is to be a horizontal section before going into the chimney then try and keep it as short as possible.  The maximum horizontal run allowed is half of the total vertical vent height.  45's, 90 degree elbows and any horizontal length is not to be considered in the total gas vent height.

The Chimney the Bosch tankless water heater is venting into must be the only thing going into the chimney.  The galvanized type B gas vent must run all the way up the chimney to an approved rain cap.  The minimum vertical vent height is 6 ft and any horizontal vent connectors or elbows are not to be considered in the total gas vent height.  All gas vent sections of pipe must be screwed together with sheet metal screws and properly supported.  The masonry chimney may have to be tile or metal lined before the insertion of the gas vent pipe.  Consult local codes for proper lining of chimney.  You may not vent any other fuel burning appliances into any free space remaining in the chimney.  Please see the illustration below for venting into the chimney and always follow the instructions listed in the installation manual for the heater.

A = Minimum of 6 ft. rise
1.  Listed approved Rain Cap
2.  Horizontal vent connection rising 1/4" per ft.
3.  Establish a 12" rise before any elbows

Replacing Older Bosch Tankless with The Bosch Therm 830ES

The Bosch Therm 830ES Non-Condensing tankless water heater is a top performance, gas tankless water heater from Bosch. This 175,000 BTU heater is designed for residential applications and can deliver hot water up to 140 degrees F with a 8.3 GPM flow rate at a 35 degree rise.  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 Bosch Therm 830ES heater features an electronic ignition system and can vent through either 3 inch or 4 inch diameter stainless steel vent pipe either through the side wall or up through the roof. A stainless steel concentric side-wall venting option (ESHCK-Full-Kit) is also available.

The Bosch 830ES heater comes with built-in Freeze Protection but it does not come with the 3/4" PRV and the External Water Filter.  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 Therm 830ES is a wholesale model heater and sold to licensed plumbers and contractors.  The new Bosch Therm 830ES is a close replacement for older models such as the Bosch 250SX/250SXO, 635ES/635ESO and the 2400E.  Please be aware the 830ES is 7" taller, 2.375" wider and 2.75" deeper than the previous models. The Bosch 830ES is a direct replacement for the Bosch 2400ES.  For outdoor installations the Bosch 830ES would require the BTOK Outdoor Kit.

The Bosch Therm 830ES 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.

Bosch Therm 330PN Replacing the Bosch Aquastar 38B

The Bosch Therm 330PN gas tankless water heater is a point-of-use water heater designed to provide instant hot water for two sinks. It can, in some locals be used to provide hot water for a single low flow shower.  

The Bosch 330PN is 75,000 BTU's and can deliver 2.6 GPM of hot water at a 45 degree F temperature rise. A regular shower head delivers about 2.0 - 2.5 GPM, so the Bosch 330PN is right on the edge for delivering water for a hot shower.

However, if you live in a warm climate, such as Texas, Southern California, Florida, Arizona, etc, then you probably do not need to raise the water temperature by 45 degrees, so the 330PN can work for a single shower.

Also, if you use a low-flow shower head that reduces your flow to say 1.5 GMP, then again you can have a hot shower with the Bosch 330PN.

We would not recommend the Bosch Therm 330PN for a regular flow shower head in New York -- it just will not be able to keep up and provide you with a hot shower due to the cold incoming water.  The Bosch Therm 330PN is not designed or approved for preheated inlet water..
The Bosch 330PN is a good replacement for the older Bosch Aquastar 38B. The 38B was 40,000 BTU's and only delivered about 1.3 GPM at the same 45 degree F temperature rise. So, the 330PN really is a much stronger water heater than the 38B ever was!

The Bosch Therm 330PN takes the same 4" venting as the 38B did and must be vented vertical up through the roof.  The 330PN CANNOT be powervented out the sidewall of the building.

The Bosch 330PN comes in both Natural Gas (NG) and Liquid Propane (LPG) models.

The Bosch 330PN is designed for heating potable water only and is not approved for space heating applications.

Bosch Tankless Replacement Parts

GlobalTowne sells Bosch Tankless Water Heater Replacement Parts for current and discontinued Bosch Tankless Water Heaters.

Bosch Heat
Exchanger

On our web site we only list the most common Bosch Replacement Parts, such as heat exchangers, gas valves, water valves, PCB control boards, etc. However, we sell all of the Bosch tankless replacement parts for current and obsolete heaters.

We need you to provide us with the part number that you need and we will get you pricing and availability.

All Bosch tankless water heater replacement parts are non-refundable.

All Bosch replacement parts can be shipped via Next Day Air, 2nd Day Air or Ground service. Expedited shipping orders placed by Noon ET can usually be shipped out the same day

Just give us a call at 888.726.9752.

Steve