Carrier 48TF004-007 Install Flue Hood - Flue hood is shipped, Unit Leveling Tolerances

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B	B-C	A-C
0.5	1.0	1.0

Fig. 3 — Unit Leveling Tolerances

NOTE: Drain plug is shown in factory-installed position.

Fig. 4 — Condensate Drain Connection

Unit may be installed directly on wood flooring or on Class A, B, or C roof-covering material when roof curb is used.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

Flue vent discharge must have a minimum horizontal clear- ance of 4 ft from electric and gas meters, gas regulators, and gas relief equipment.

Minimum distance between unit and other electrically live parts is 48 inches.

NOTES:

1. Dimensions in ( ) are in millimeters.

2.Hook rigging shackles through holes in base rail, as shown in detail “A.’ Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps from damaging unit.

Flue gas can deteriorate building materials. Orient unit such that flue gas will not affect building materials.

Adequate combustion-air space must be provided for proper operation of this equipment. Be sure that installation complies with all local codes and Section 5.3, Air for Combustion and Ventilation, NFGC (National Fuel Gas Code), and ANSI (American National Standards Institute) Z223.1, and NFPA (National Fire Protection Association) 54 TIA-54-84-1. In Canada, installation must be in accordance with the CAN1-B149 installation codes for gas burning appliances.

After unit is in position, remove rigging skids and shipping materials.

Step 5 — Install Flue Hood — Flue hood is shipped

screwed to the basepan beside the burner compartment access panel. Remove from shipping location and using screws pro- vided, install flue hood and screen in location shown in Fig. 7.

Step 6 — Install Gas Piping — Unit is equipped for

use with type of gas shown on nameplate. Refer to local build- ing codes, or in the absence of local codes, to ANSI Z223.1 en- titled National Fuel Gas Code. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 in- stallation codes for gas burning appliances.

For natural gas applications, gas pressure at unit gas con- nection must not be less than 4 in. wg or greater than

13.0in. wg while unit is operating. On 48TF005,006,007 high heat units, the gas pressure at unit gas connection must not be less than 5 in. wg or greater than 13 in. wg while the unit is op- erating. For propane applications, the gas pressure must not be less than 5 in. wg or greater than 13 in. wg at the unit connection.

Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection. Support gas piping as shown in the table in Fig. 8. For exam-

ple, a 3/4-in. gas pipe must have one field-fabricated support beam every 8 ft. Therefore, an 18-ft long gas pipe would have a minimum of 2 support beams, a 48-ft long pipe would have a minimum of 6 support beams.

See Fig. 8 for typical pipe guide and locations of external manual main shutoff valve.

3.Unit weights do not include economizer. See Table 1 for economizer weights.

All panels must be in place when rigging.

UNIT	MAX WEIGHT		“A”		“B”		“C”
	Lb	Kg	in.	mm	in.	mm	in.	mm
48TFE,TFF,TFM,TFN004	510	231
48TFD,TFE,TFF,TFL,TFM,TFN005	520	236	73.69	1872	37.50	953	33.35	845
48TFD,TFE,TFF,TFL,TFM,TFN006	540	245
48TFD,TFE,TFF007	615	279

Fig. 5 — Rigging Details

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