Bedienungsanleitung Buderus SB745WS (Seite 6 von 52) (Englisch)

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6 | Product Description

SB625WS/SB745WS6 720 805 218 (2016/02)

2.1 Intended use

This boiler must only be used for the purpose specified by the

manufacturer and for which it is designed.

The SB625WS/SB745WS can be operated with gas, oil, and

combination burners. For a list of the approved burners, please contact

Bosch Thermotechnology Corp.

The boiler can be operated with an aquastat, the Logamatic 4000, and

other control systems.

The manufacturer declines all responsibility, contractual or other, for

damage to property or injury to persons or animals caused by improper

installation, adjustment, maintenance or use.

2.2 Certification and testing mark

This appliance has been tested and certified and meets all applicable

standards for the US and Canadian markets:

• CSA-AM 3.1 Industrial and commercial gas-fired package boilers

• CSA B140.0 General requirements for oil burning equipment

• CSA B140.2.1-10 Atomizing-type oil burners

• CSA B140.7-05 Oil-burning equipment - steam and hot water boilers

• UL 296 Standard for oil burners

• UL 726 Standard for oil-fired boiler assemblies

• UL 795 Standard for commercial industrial gas heating equipment

2.3 Regulations and Guidelines

2.3.1 National regulation

The heating system must comply with the requirements of the relevant

regulatory authorities or otherwise of the National Fuel Gas Code, ANSI

Z 223.1 In Canada, the requirements of CAN/CGA-B.149.1 and 2, or

CAN/CGA-B.139 must be observed.

If specified by the relevant regulatory authorities, the heating system

must comply with the regulations of the Standard for Controls and

Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1.

Carbon monoxide detectors must be installed as specified by the local

regulations. The boiler must be serviced annually.

2.3.2 Compliance with standards and regulations

Installation of the boiler must comply with all applicable codes and

regulations imposed by the national, Federal or local authorities and

bodies. If no specific requirements are defined, in the USA, the latest

edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54 must be

complied with.

In Canada, installation must comply in all respects with the latest edition

of the Natural Gas and Propane Installation Code, CAN/CGA-B. 149, the

Installation Code for Oil Burning Equipment, CAN/CGA-B. 139 and the

applicable local regulations and requirements for the appliance

category. The relevant authorities and regulatory bodies must be

informed before installation starts.

Where required by local regulations, the system must comply with the

American Society of Mechanical Engineers Safety Code for Controls and

Safety Devices for Automatically Fired Boilers (ASME CSD-1).

The local regulations regarding minimum pressure detectors and low-

water safety cutouts must be observed. Installation and operation must

comply with the device manufacturer‘s technical documentation.

We recommend fitting an 80 mesh dirt filter externally to the boiler

return to prevent contamination of the boiler by the water source.

Leak test

A leak test must be carried out. The testing pressure is based on the

normal operating pressure of the heating system and should be 1.3

times that pressure, and in any case no less than 14 psi (1 bar).

Safety limits

2.3.3 Additional regulations for installations in the

Commonwealth of Massachusetts

(a) For all side wall horizontally vented gas fueled equipment installed in

every dwelling, building or structure used in whole or in part for

residential purposes, including those owned or operated by the

Commonwealth and where the side wall exhaust vent termination is less

than seven (7) feet above finished grade in the area of the venting,

including but not limited to decks and porches, the following

requirements shall be satisfied:

• INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of

installation of the side wall horizontal vented gas fueled equipment,

the installing plumber or gasfitter shall observe that a hard wired

carbon monoxide detector with an alarm and battery back-up is

installed on the floor level where the gas equipment is to be installed.

In addition, the installing plumber or gasfitter shall observe that a

battery operated or hard wired carbon monoxide detector with an

alarm is installed on each additional level of the dwelling, building or

structure served by the side wall horizontal vented gas fueled

equipment. It shall be the responsibility of the property owner to

secure the services of qualified licensed professionals for the

installation of hard wired carbon monoxide detectors.

– In the event that the side wall horizontally vented gas fueled

equipment is installed in a crawl space or an attic, the hard wired

WARNING: Risk of fatal Injury from explosion of

flammable gases!

▶ Installation, connection of the fuel supply and flue

pipe, commissioning, connection of the electrical

power supply, servicing and repair may only be

carried out by an authorized heating engineer.

▶ Any work on gas-carrying components may only be

carried out by an authorized gas installer.

The details on the boiler rating plate are definitive and

must be observed.

Safety limits Value

Maximum allowable temperature: 230 °F (110 °C)

Maximum operating temperature 210 °F (98.8 °C)

Permissible operating pressure: 80 psi (5.5 bar)

Maximum cycle time for safety

temperature limiter:

40 s

Maximum cycle time for

temperature control:

40 s

Table 2 Safety limits

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