Bosch Appliances 2400E LP, 2400E NG manual Exterior masonry chimneys, Horizontal terminations

Installation instructions

The masonry chimney may have to be tile or metal lined before the insertion of the gas vent pipe; check local codes for clarification. You may not vent any other fuel burning appliances into any free space remaining in the chimney. The vent terminator must extend at least 3 feet (0.9 m) above where the chimney meets the roofline and at least 2 feet (0.6 m) higher than any vertical wall or similar obstruction within 10 feet (3.1 m). The top of the chimney must be sealed to prevent rain water or other elements from entering the chimney.

Exterior masonry chimneys

Refer to the National Fuel Gas Code and consult a local venting HVAC contractor. Not recommended in cold climates.

3.6.6Horizontal terminations

•For horizontal vent runs less than 5 linear feet, the entire vent run must pitch down to termination 1/4" per foot to eliminate the danger of rain from entering the venting system.

•The exhaust vent must terminate immediately once it penetrates the outside wall.

•An approved vent terminator must be used. See Table 4 for known approved horizontal vent terminations.

•Install an additional condensate drain (not supplied) if the total straight vent length is greater than 5 feet or if the exhaust vent pipe passes through an unconditioned space.

•Terminating the intake air piping above the exhaust termination is not recommended.

•Fig. 17 and table 6 show the required clearances for the vent termination. Follow local codes if more stringent.

3.6.6.1Attention residents of the Commonwealth of Massachusetts:

In the Commonwealth of Massachusetts the following regulation went into effect on 12/30/2005:

(a)For all side wall horizontally vented gas fueled equip- ment installed in every dwelling, building or structure used in whole or in part for residential purposes, includ- ing 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:

1.INSTALLATION OF CARBON MONOXIDE DETEC- TORS. At the time of installation of the side wall hor- izontal 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 oper- ated or hard wired carbon monoxide detector with an

alarm is installed on each additional level of the dwell- ing, building or structure served by the side wall hor- izontal 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. a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an at tic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.

b. In the event that the requirements of this subdivi- sion can not be met at the time of completion of installation, the owner shall have a period of thirty

(30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

2.APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

3.SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the build- ing at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one half (1/2) inch in size, "GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".

4.INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through

4.

(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:

1.The equipment listed in Chapter 10 entitled "Equipment Not Required To Be Vented" in the most current edition of NFPA 54 as adopted by the Board; and

2. Product approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or structure used in whole or in part for residential purposes.

(c) MANUFACTURERS REQUIREMENTS - GAS EQUIPMENT VENTING SYSTEM REQUIRED. When the manufacturer of Product Approved side wall horizontally mounted gas equipment provides a venting system design or venting system compo- nents with the equipment, the instructions provided by the manufacturer for the installation of the equip- ment and the venting shall include:

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