24 C.F.R. § 3280.511
Air Conditioner Manufacturer _______________________________
Air Conditioner Model _______________________________
Certified Capacity ______ BTU/Hr. in accordance with the appropriate Air Conditioning and Refrigeration Institute Standards
The central air conditioning system provided with this home has been sized, assuming an orientation of the front (hitch) end of the home facing ______ and is designed on the basis of a 75 °F indoor temperature and an outdoor temperature of __ °F dry bulb and __ °F wet bulb.
Example Alternate I
COMFORT COOLING CERTIFICATE
Manufactured Home Mfg _______________________________
Plant Location _______________________________
Manufactured Home Model _______________________________
Air Conditioner Manufacturer _______________________________
Certified Capacity ______ BTU/Hr. in accordance with the appropriate Air Conditioning and Refrigeration Institute Standards.
The central air conditioning system provided with this home has been sized assuming an orientation of the front (hitch end) of the home facing ______. On this basis, the system is designed to maintain an indoor temperature of 75 °F when outdoor temperatures are __ °F dry bulb and __ °F wet bulb.
The temperature to which this home can be cooled will change depending upon the amount of exposure of the windows to the sun's radiant heat. Therefore, the home's heat gains will vary dependent upon its orientation to the sun and any permanent shading provided. Information concerning the calculation of cooling loads at various locations, window exposures and shadings are provided in chapter 22 of the 1989 edition of the ASHRAE Handbook of Fundamentals.
Example Alternate 2
COMFORT COOLING CERTIFICATE
Manufactured Home Manufacturer _______________________________
Plant Location _______________________________
Manufactured Home Model _______________________________
This air distribution system of this home is suitable for the installation of central air conditioning.
The supply air distribution system installed in this home is sized for Manufactured Home Central Air Conditioning System of up to ______ B.T.U./Hr. rated capacity which are certified in accordance with the appropriate Air Conditioning and Refrigeration Institute Standards. When the air circulators of such air conditioners are rated at 0.3 inch water column static pressure or greater for the cooling air delivered to the manufactured home supply air duct system.
Information necessary to calculate cooling loads at various locations and orientations is provided in the special comfort cooling information provided with this manufactured home.
Example Alternate 3
COMFORT COOLING CERTIFICATE
Manufactured Home Mfg _______________________________
Plant Location _______________________________
Manufactured Home Model _______________________________
The air distribution system of this home has not been designed in anticipation of its use with a central air conditioning system.
To determine the required capacity of equipment to cool a home efficiently and economically, a cooling load (heat gain) calculation is required. The cooling load is dependent on the orientation, location and the structure of the home. Central air conditioners operate most efficiently and provide the greatest comfort when their capacity closely approximates the calculated cooling load. Each home's air conditioner should be sized in accordance with chapter 22 of the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Handbook of Fundamentals, 1989 Edition, once the location and orientation are known.
Information Provided by the Manufacturer Necessary To Calculate Sensible Heat Gain
| Walls (without windows and doors) | U |
| Ceilings and roofs of light color | U |
| Ceilings and roofs of dark color | U |
| Floors | U |
| Air ducts in floor | U |
| Air ducts in ceiling | U |
| Air ducts installed outside the home | U |
Information necessary to calculate duct areas.
24 C.F.R. §3280.511