Carrier 48DL Installation Manual download pdf (Page 9)

264975-BIM-B-1208

Johnson Controls Unitary Products 9

LIMITATIONS

These units must be installed in accordance with the follow-

ing:

In U.S.A.

1. National Electrical Code, ANSI/NFPA No. 70 - Latest

Edition

2. National Fuel Gas Code, ANSI Z223.1 - Latest Edition

3. Gas-Fired Central Furnace Standard, ANSI Z21.47a. -

Latest Edition

4. Local building codes, and

5. Local gas utility requirements

In Canada

1. Canadian Electrical Code, CSA C22.1

2. Installation Codes, CSA - B149.1.

3. Local plumbing and waste water codes, and

4. Other applicable local codes.

Refer to Tables 1 & 2 for unit application data.

After installation, gas fired units must be adjusted to obtain a

temperature rise within the range specified on the unit rating

plate.

If components are to be added to a unit to meet local codes,

they are to be installed at the dealer’s and/or customer’s

expense.

Size of unit for proposed installation should be based on heat

loss/heat gain calculation made according to the methods of

Air Conditioning Contractors of America (ACCA).

This furnace is not to be used for temporary heating of build-

ings or structures under construction.

This product must be installed in strict compliance

with the enclosed installation instructions and any

applicable local, state and national codes including,

but not limited to, building, electrical, and mechani-

cal codes.

The furnace and its individual shut-off valve must be

disconnected from the gas supply piping system

during any pressure testing at pressures in excess

of 1/2 PSIG.

Pressures greater than 1/2 PSIG will cause gas

valve damage resulting in a hazardous condition. If it

is subjected to a pressure greater than 1/2 PSIG, the

gas valve must be replaced.

The furnace must be isolated from the gas supply

piping system by closing its individual manual shut-

off valve during any pressure testing of the gas sup-

ply piping system at test pressures equal to or less

than 1/2 PSIG.

The Simplicity® control board used in this product

will effectively operate the cooling system down to

0°F when this product is applied in a comfort cooling

application for people. An economizer is typically

included in this type of application. When applying

this product for process cooling applications (com-

puter rooms, switchgear, etc.), please reference

applications bulletin AE-011-07 or call the applica-

tions department for Unitary Products @ 1-877-

UPG-SERV for guidance. Additional accessories

may be needed for stable operation at temperatures

below 30° F.

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Carrier 48DL Installation Manual Page 9

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