Bryant 577D----A installation instructions Select and Install Ductwork, Personal Injury Hazard

CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR

ACCESS PANELS MUST BE IN PLACE WHEN RIGGING.

PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION.

Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition

DUCTS

MINIMUM HEIGHT: 36" (914.4 mm)

HAUTEUR MINIMUM

		BANDE SCELLANT DOIT ÊTRE
	SEAL STRIP MUST BE IN
UNIT HEIGHT	PLACE BEFORE PLACING	EN PLACE AVANT DE PLACER
HAUTEUR D'UNITÉ	UNIT ON ROOF CURB	L'UNITÉ SUR LA BASE DE TOIT

	DETAIL A
SEE DETAIL A	VOIR DÉTAIL A
VOIR DÉTAIL A			50CY502286 2.0
				A09079
CABINET	MODEL		RIGGING WEIGHT
			lb	kg
Small	577D --- ---	A24	426	193
Small	577D --- ---	A30	433	196
	577D --- ---	A36	522	237
Large	577D --- ---	A42	544	247
	577D --- ---	A48	558	253
	577D --- ---	A60	609	276

NOTE: See dimensional drawing for corner weight distribution.

Fig. 7 - Suggested Rigging

577D-- -- A

Rigging/Lifting of Unit (See Fig. 7)

!WARNING

UNIT FALLING HAZARD

Failure to follow this warning could result in personal injury or death.

Large base units must be secured to common curb before allowing full weight of unit to rest on curb. Install screws through curb into unit base rails while rigging crane is still supporting unit.

Lifting holes are provided in base rails as shown in Fig. 5 and 6.

1.Leave top shipping skid on the unit for use as a spreader bar to prevent the rigging straps from damaging the unit. If the skid is not available, use a spreader bar of sufficient length to protect the unit from damage.

2.Attach shackles, clevis pins, and straps to the base rails of the unit. Be sure materials are rated to hold the weight of the unit (See Fig. 7).

3.Attach a clevis of sufficient strength in the middle of the straps. Adjust the clevis location to ensure unit is lifted level with the ground.

After the unit is placed on the roof curb or mounting pad, remove the top skid.

Select and Install Ductwork

The design and installation of the duct system must be in accordance with the standards of the NFPA for installation of non-residence type air conditioning and ventilating systems, NFPA 90A or residence type, NFPA 90B and/or local codes and ordinances.

Select and size ductwork, supply-air registers, and return air grilles according to ASHRAE (American Society of Heating, Refrigeration, and Air Conditioning Engineers) recommendations.

The unit has duct flanges on the supply- and return-air openings on the side of the unit.

!WARNING

PERSONAL INJURY HAZARD

Failure to follow this warning could result in personal injury or death.

For vertical supply and return units, tools or parts could drop into ductwork, therefore, install a 90 degree turn in the return ductwork between the unit and the conditioned space. If a 90 degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space.

When designing and installing ductwork, consider the following:

1.All units should have field-supplied filters or accessory filter rack installed in the return-air side of the unit. Recommended sizes for filters are shown in Table 1.

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