Desa CGCFTP, CGCFTN 14, HDCFTN AIR for Combustion Ventilation, Confined and Unconfined Space

Page 7

AIR FOR COMBUSTION

AND VENTILATION

Continued

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the out- side atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10-11 kg per pa-sec-m2) or less with openings gasketed or sealed and

b.weather stripping has been added on openable windows and doors and

c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical and gas lines and at other openings.

If your home meets all of the three criteria above, you must provide additional fresh air. See Ventilation Air From Outdoors, page 8.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Fireplace Location.

Confined and Unconfined Space

The National Fuel Gas Code, ANSI Z223.1/NFPA 54 defines a confined space as a space whose vol- ume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

*Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this work sheet 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 door- less 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 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 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.Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

__________ (volume of space) x 20 = (Maxi- mum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) x 20 = 51,200 (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

Gas water heater*

___________ Btu/Hr

Gas furnace

___________ Btu/Hr

Vented gas heater

___________ Btu/Hr

Gas fireplace logs

___________ Btu/Hr

Other gas appliances* +___________

Btu/Hr

Total

=___________

Btu/Hr

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

Example:

Gas water heater

30,000

 

__________ Btu/Hr

Vent-free heater

26,000

 

+ ________ Btu/Hr

Total

= 56,000

Btu/Hr

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: 51,200 Btu/Hr (maximum the space can support)

56,000 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 maxi- mum 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 adjoin- ing room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 8.

B.Vent room directly to the outdoors. See Ventila- tion Air From Outdoors, page 8.

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

111044-01F

www.desatech.com

7

Page 6 Page 8
Image 7
Page 6 Page 8
Contents HDCFTP, HDCFTN, Cgcftp and Cgcftn Shown with Optional Cabinet Mantel/Hearth Base Accessory14,000 to 26,000 Btu/Hr with Thermostat Table of Contents Safety Information Product Information Local CodesProvide adequate clearances around air openings Assembly Product FeaturesUnpacking Assembling Hood Providing Adequate VentilationDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Confined and Unconfined SpaceVentilation Air From Outdoors InstallationVentilation AIR Ventilation Air From Inside BuildingCheck GAS Type Installation ItemsLocating Fireplace Rough Opening for Installing Wall BUILT-IN Fireplace InstallationAttaching Fireplace to Wall Studs If you have not assembled firebox, follow instructions onOptional Mantel Installation Mantel Clearances for BUILT- in InstallationRemoving Upper Louver Assembly Installing Blower AccessoryRemoving Valve Cover Shield Installing Blower Assembly Models Cgcftp and CgcftnClose lower louver door For Built-In InstallationAttaching Wood Base to Solid Floor Connecting to GAS SupplyExtension Cord Installation Items Needed Connecting Equipment Shutoff Valve to Heater ControlTest Pressures In Excess Of 1/2 Psig 3.5 kPa Checking GAS ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Propane/LP For Your SafetyRead Before Lighting Equipment Shutoff ValveShutting Off Fireplace Operating FireplaceLighting Instructions To Turn OFF GAS To ApplianceBurner Flame Pattern Manual Lighting ProcedureInspecting Burner Thermostat Control OperationAir Passageways Cleaning MaintenanceBurner Injector Holder and Pilot AIR Inlet Hole CabinetObserved Problem Possible Cause Remedy TroubleshootingPress in control knob fully Out when control knob is reDelayed ignition of burner Manifold pressure is too low ODS/pilot lights but flame goesAir passageways on fireplace Burner orifice Clean burner see CleaningGas regulator defective Nance, Replace gas regulator Air in gas line Minute Operate burner until air isGas leak. See Warning Technical Service SpecificationsReplacement Parts Service HintsModels CGCFTP, CGCFTN, Hdcftp and Hdcftn Illustrated Parts BreakdownPart Number KEY Hdcftp Hdcftn Cgcftp Cgcftn Description QTY Parts ListAccessories FBD Parts CentralsKeep this Warranty Warranty InformationLimited Warranty VENT-FREE Compact Fireplace

CGCFTP, CGCFTN 14, HDCFTN specifications

Desa HDCFTN, CGCFTP, and CGCFTN 14 represent a significant advancement in the landscape of modern digital architecture. These entities are characterized by their unique blend of features, technologies, and characteristics that cater to various applications and industries.

At the core of these systems is the high-density computing and flexible trading network (HDCFTN) structure, which allows for scalable operations and enhanced processing capabilities. This architecture is designed to efficiently handle large volumes of data transactions, making it ideal for sectors such as finance, telecommunications, and research institutions. By incorporating distributed computing, HDCFTN can optimize resource allocation and significantly reduce latency compared to traditional centralized systems.

CGCFTP, or the Cloud-based Grid Computing for Financial Transactions Platform, serves as a robust framework that integrates real-time data processing and analysis. Its cloud-native design ensures seamless connectivity and scalability, enabling organizations to operate in a flexible environment. The platform utilizes microservices architecture, which allows for independent deployment and scaling of different components, leading to improved performance and resilience.

Meanwhile, CGCFTN 14 focuses on providing end-to-end solutions for trading and financial operations. It incorporates advanced security protocols and compliance features, addressing the increasing regulatory demands prevalent in the financial sector. Utilizing blockchain technology, CGCFTN 14 ensures data integrity and transparency, creating trust among users while minimizing the risk of fraud or misconduct.

The combination of artificial intelligence (AI) and machine learning (ML) within these frameworks enhances predictive analytics and decision-making processes. With algorithms that learn from historical data, organizations can anticipate market trends and adjust their strategies accordingly. The integration of big data analytics further fuels real-time insights, empowering businesses to respond swiftly to market changes.

Moreover, these innovative systems embrace interoperability, connecting with various existing technologies and platforms. This flexibility allows organizations to leverage their current investments while still benefiting from new technological advancements. In summary, Desa HDCFTN, CGCFTP, and CGCFTN 14 exemplify the future of digital infrastructure, characterized by high density, cloud integration, advanced security, and intelligent analytics, driving efficiency and innovation across industries.
Top Page Image Contents