OWNER’S MANUAL

AIR FOR

COMBUSTION AND

VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this worksheet to determine if you have a confined or unconfined space.

Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height).

Length x Width x Height = _________________ cu. ft. (volume of space)

Example: Space size 18 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2304 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.

_________________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)

Example: 2304 cu. ft. (volume of space) ÷ 50 cu. ft. = 46.1 or 46,100 (maximum Btu/Hr the space can support)

3.Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free heater

___________________ Btu/Hr

Example:

 

 

 

Gas water heater*

___________________ Btu/Hr

 

 

 

Gas water heater

 

40,000

Btu/Hr

Gas furnace

___________________ Btu/Hr

 

Vent-free heater

+

10,000

Btu/Hr

Vented gas heater

___________________ Btu/Hr

Total

=

50,000

Btu/Hr

Gas fireplace logs

___________________ Btu/Hr

 

 

 

 

Other gas appliances* + ___________________ Btu/Hr

 

 

 

 

Total

= ___________________ Btu/Hr

 

 

 

 

*Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

_________________ Btu/Hr (maximum the space can support)

_________________ Btu/Hr (actual amount of Btu/Hr used)

Example: 46,100 Btu/Hr (maximum the space can support) 50,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A.Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin- ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.

B.Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.

C.Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3 or applicable local codes.

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Desa CGR2N installation manual AIR for Combustion Ventilation, Determining FRESH-AIR Flow for Heater Location

CGR2N specifications

Desa CGR2N is an innovative village concept designed to embrace modern living while preserving a sense of community and sustainability. This development integrates advanced technologies and green practices to create a holistic living experience for its residents. The central philosophy of Desa CGR2N is to foster interconnectedness among residents while providing access to essential amenities and services.

One of the main features of Desa CGR2N is its focus on smart homes. Each residence is equipped with state-of-the-art smart technology that enhances both security and convenience. Home automation systems allow residents to control lighting, heating, and security features through their smartphones, contributing to energy efficiency and enhanced safety. Furthermore, the integration of IoT devices supports real-time data collection, enabling residents to monitor and manage their energy consumption.

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Community spaces are a vital aspect of Desa CGR2N, designed to promote social interaction and collaboration among residents. Parks, sports facilities, and communal gardens are strategically placed throughout the village, fostering a strong sense of belonging. The village layout prioritizes walkability and accessibility, ensuring that essential services, such as schools, healthcare centers, and shopping areas, are within easy reach.

Furthermore, Desa CGR2N emphasizes local food production through urban farming initiatives. Residents can participate in community gardens, which not only provide fresh produce but also educate individuals about sustainable agriculture practices. This focus on self-sufficiency further strengthens the community's resilience against external disruptions.

Overall, Desa CGR2N represents a forward-thinking approach to modern living, combining technology, sustainability, and community engagement. By prioritizing smart home features, renewable energy, and communal spaces, this village creates an environment where residents can thrive both individually and collectively. As urbanization continues to rise, developments like Desa CGR2N may serve as a blueprint for future living spaces that harmonize innovation with a deep sense of community.