Bosch GWH-345/450-ESR-L - Manual
Bosch GWH-345/450-ESR-L – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Index; For your safety; Carefully plan where you
- Page 3 – Warning; The recirculating water
- Page 4 – Appliance details; Features
- Page 5 – Screws
- Page 7 – Dimensions and minimum installation clearances; Dimensions
- Page 8 – Applications; Introduction; the water heater which will be; Note; Front cover
- Page 9 – Water quality; water flow rate; pH
- Page 10 – Installation instructions
- Page 11 – Fig. 10 Mounting the heater; Combustion air requirements; Twin pipe; An unconfined space is one whose volume is; This failure is; When installed in an
- Page 12 – inside the building
- Page 13 – Venting; Vent material and specifications; Fig. 12 Minimum exhaust vent length; Material; inches; Table 3 Venting Specifications
- Page 14 – Fig. 13 Maximum vent and combustion air lengths; Vent material; Contact your Bosch supplier for stocked vent material.; Vent Safety System; Failure to fully insert and tighten vent pipe may; Contact information; Table 4 Vent manufacturer contact information; Vent pipe; Z flex; Table 5 Approved vent termination and condensate
- Page 15 – Fig. 14 Exhaust vent connection
- Page 17 – Use table below to define which restrictor to be used.; Combustion air inlet connection; and; Fig. 16 Exhaust air inlet accessory; Restrictor Ø; LP
- Page 18 – condensate must be disposed of according to
- Page 21 – NOTICE
- Page 22 – Fig. 22 Horizontal side wall venting installation
- Page 23 – Gas piping & connections; GAS CONNECTIONS; GAS LINE SIZING
- Page 24 – FOR NATURAL GAS; corrugated) Tubing in Thousands of BTU per Hour of; FOR LP GAS
- Page 25 – Measuring gas pressure; Fig. 28 Measuring port; Operating; Gas Pressure Reading (see Chapter; Appliance
- Page 26 – Water connections; Connecting the pressure relief valve (PRV); Electrical connections; OUTLET
- Page 27 – Operating instructions; Initial filling instructions; WHAT TO DO IF YOU SMELL GAS; Startup instructions; TO TURN OFF GAS TO APPLIANCE
- Page 28 – Fig. 33 Recirculating water temperature adjustment; Temperature and hot water flow; Fig. 34 Hot water temperature adjustment; Freeze protection
- Page 29 – Electrical diagram; Fig. 35 Electrical scheme; : Except for the fuse, there are no serviceable
- Page 30 – Maintenance and service; Service mode
- Page 32 – Troubleshooting; Fault Indication; Internal error in the electronic unit.
- Page 34 – Fig. 36 Functional scheme; APS
- Page 35 – Interior components diagram and parts list; Interior components
- Page 36 – Components diagram; Fig. 38 Components Diagram
- Page 37 – Parts list
- Page 38 – Protecting the environment; Packing
- Page 39 – Ten Year Limited Warranty
GWH 345/450 ESR
Temperature Modulated with Electronic Ignition
Suitable for heating and recirculating potable water
GWH-345/450-ESR-N - Natural Gas
GWH-345/450-ESR-L - Liquefied Petroleum (LP) Gas
6 72
0 607
909
U
S
(20
08.
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Warning:
If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Do not store or use gasoline or other flammable
vapor and liquids in the vicinity of this or any other
appliance.
Improper installation, adjustment, alteration,
service or maintenance can cause injury or
property damage. Refer to this manual. For
assistance or additional information consult a
qualified installer, service agency or the gas
supplier.
In the Commonwealth of Massachusetts this
product must be installed by a licensed plumber or
gas fitter.
Upon completion of the installation, these
instructions should be handed to the user of the
appliance for future reference.
What to do if you smell gas
• Close gas valve. Open windows and doors, and
evacuate the building.
• Do not try to operate any appliance.
• Do not touch any electrical switch; do not use any
phone in your building
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
• Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
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Summary
6 720 607 909 2 Index Index 1 Warning 2 2 Appliance details 4 2.1 Features 4 2.2 GWH-345/450-ESR Specifications (Technical data) 4 2.3 Unpacking the GWH-345/450-ESR heater 5 2.4 General rules to follow for safe operation 6 2.5 Dimensions and minimum installation clearances 7 2.6 Applications 8 2.7 W...
6 720 607 909 Warning 3 FCC:This device complies with Part 15 of the FCC rules.Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2)this device must accept any interference received,including interference that may cause undesiredoperation. F...
6 720 607 909 4 Appliance details 2 Appliance details 2.1 Features Parts • Sealed combustion burner. Safety • Ionization flame sensor • Over temperature protection. High quality materials for long working life • Copper heat exchanger • Compact space saver: mounts on a wall with supplied bracket. Fea...
