Bosch Appliances GWH-345/450-ESR-L, GWH-345/450-ESR-N manual Vent material, Vent Safety System

Page 14

Installation instructions

Vent pipe

Reduce maximum length 6 ft for each 90 elbow after the first one and 3 ft for each 45 elbow.

Combustion air intake

Fig. 13 Maximum vent and combustion air lengths

Vent material

The GWH-345/450-ESR requires 3 inch sealed single wall stainless steel vent pipe (AL29-4C). Use of any other vent material will void the manufactures warranty and may result in a hazardous condition. For specific questions concerning vent material, specifications, usage or installation, contact the vent manufacturer directly.

Company

Contact information

 

 

Z-flex

www.z-flex.com

 

800-654-5600

 

 

ProTech

www.protechinfo.com

Industries

800-766-3473

 

 

Heat-Fab

www.heatfab.com

 

800-772-0739

 

 

Table 4 Vent manufacturer contact information

 

Z flex

Protech

Heat Fab

 

 

 

 

3” Horizontal

TEE only

TEE only

9390 TEE

terminator

 

 

 

 

 

 

 

3” Vertical

2SVSRCF03

FSRC3

5300CI

terminator

 

 

 

 

 

 

 

90°

2SVEVWCF03

FST3 &

93PLSTEE

Condensate

FSDF3

drain Tee

 

 

 

 

 

 

 

 

 

Horizontal

2SVEDWCF03

FSHD03

9321

Condensate

drain

 

 

 

 

 

 

 

Vertical

2SVSEVDP03

N/A

N/A

Condensate

drain

 

 

 

 

 

 

 

Condensate

2SVEDTK

N/A

7000TUBE

Drain Tube

 

 

 

 

 

 

 

Table 5 Approved vent termination and condensate drain part numbers (subject to change)

Contact your Bosch supplier for stocked vent material.

Vent Safety System

The GWH-345/450-ESR will shut down if inadequate exhaust venting is detected or a lack of combustion air is provided to the unit; see troubleshooting section on page 32. Correct the problem and then reset the heater before operating.

3.6.2Vent connections and air inlet restrictors

Exhaust vent connection

BAttach the flue gas exhaust accessory (8 705 504

142)to the top of the unit (position 1) using the 4 screws and gasket provided

BInsert 3" single wall stainless steel vent pipe into exhaust vent adapter 1.5" and tighten the clamp (position 2).

Note: Failure to fully insert and tighten vent pipe may cause flue gas leakage or condensate damage that is not covered under the manufacturer's warranty.

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Contents Temperature Modulated with Electronic Ignition What to do if you smell gasIndex For your safetyIndex FCC Appliance details FeaturesGWH-345/450-ESR Specifications Technical data Inlet air restrictors Unpacking the GWH-345/450-ESR heaterAppliance details Water resistant GWH-345/450-ESR is not approved or designed forGeneral rules to follow for safe operation Dimensions and minimum installation clearances DimensionsPump Sizing ApplicationsIntroduction Instantaneous water heater direct tank load designWater flow rate PressureInlet Water qualityHeater placement and clearances Installation instructionsProper location for installing your heater Mounting installationSingle pipe Combustion air requirementsTwin pipe Appliances located in unconfined spaces720 607 Vent lengths Vent material and specificationsVenting Vent Safety System Vent materialExhaust vent connection Intake Installation instructions Selecting inlet air restrictorExhaust ExampleCombustion air inlet connection Mounting sequenceInstallation instructions Condensate drain requirements Room sealed installation Twin pipeExterior Masonry Chimney Vent terminationsInterior masonry chimneys Horizontal terminations720 607 Description Minimum distance Horizontal side wall venting installation Gas piping & connections GAS ConnectionsFor Natural GAS Measuring gas pressure Checking restrictor plate size by measuring CO2 level valueWater connections Electrical connectionsInitial filling instructions For your safety read before operating your water heaterOperating instructions Operating instructionsTemperature and hot water flow PowerRecirculating water temperature Freeze protectionElectrical diagram Electrical schemeMaintenance and service Service modeParameter storage Maintenance and service Mode Parameter ValuesExiting service mode Fault Indication Possible Cause Check TroubleshootingTroubleshooting Check air vent GWH-345/450-ESR Functional scheme GWH-345/450-ESR Functional schemeInterior components Interior components diagram and parts listInterior components diagram and parts list Components diagram Components DiagramParts list Description ReferencePacking Protecting the environmentProtecting the environment ComponentsTen Year Limited Warranty Bosch Thermotechnology Corporation

GWH-345/450-ESR-L, GWH-345/450-ESR-N specifications

Bosch Appliances has long been recognized for its innovative and high-quality home appliances, and the GWH-345/450-ESR-N and GWH-345/450-ESR-L water heaters are no exception. These models offer exceptional efficiency and reliability, making them ideal choices for modern households seeking dependable water heating solutions.

One of the standout features of the GWH-345/450-ESR series is their impressive energy efficiency. Engineered with cutting-edge technology, these units operate with high thermal efficiency ratings. This not only translates to reduced energy bills for consumers but also supports environmentally friendly practices by minimizing energy consumption. The tankless design eliminates the need for a storage tank, providing hot water on demand while ensuring that no energy is wasted in heating and re-heating stored water.

Both models come equipped with advanced safety features. The integrated combustion management system ensures precise control of the combustion process, which not only enhances heating efficiency but also reduces the risk of overheating. Additionally, the built-in safety mechanisms, such as flame failure protection and overheat protection, provide consumers with peace of mind knowing their home is protected.

These Bosch water heaters also feature a user-friendly digital display that allows for easy temperature adjustment and monitoring. The intuitive interface enables users to set their desired water temperature with precision, ensuring comfort and convenience. Furthermore, these models are designed for quiet operation, making them suitable for installation in various locations within the home without causing disruptive noise.

The construction of the GWH-345/450-ESR-N and GWH-345/450-ESR-L models is robust, featuring high-quality materials that ensure durability and longevity. The compact and sleek design allows for flexible installation options, even in smaller spaces. With a variety of venting options available, including direct vent and power vent configurations, these heaters can fit seamlessly into different home layouts.

In summary, Bosch Appliances GWH-345/450-ESR-N and GWH-345/450-ESR-L models represent the pinnacle of modern water heating technology. With their energy-efficient performance, advanced safety features, user-friendly controls, and durable construction, these water heaters are designed to meet the demands of today’s homes while delivering reliable hot water whenever needed. These innovative appliances reinforce Bosch's reputation as a leader in home heating solutions, ensuring that customers can enjoy hot water with confidence and peace of mind.
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