Bryant 558F Horizontal Conversion Panels, Iv. - Rig And Place Unit, A. Positioning

Fig. 1 — Horizontal Conversion Panels

Ducts passing through an unconditioned space must be insu- lated and covered with a vapor barrier.

If plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

If electrical connections are to be routed through the bottom of the unit, attach accessory thru-the-bottom service connections to the basepan in accordance with installation instructions.

A minimum clearance is not required around ductwork. Cab- inet return-air static pressure (a negative condition) should not exceed 0.30 in. wg with economizer or 0.45 in. wg without economizer.

III.STEP 3 — INSTALL EXTERNAL TRAP FOR CONDENSATE DRAIN

The unit’s 3/4-in. condensate drain connections are located on the bottom and side of the unit. Unit discharge connections do not determine the use of drain connections; either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, ensure the plug in the alternate bottom connection (in center of pan) is tight before installing the unit.

To use the bottom drain connection for a roof curb installa- tion, relocate the factory-installed plug from the bottom con- nection to the side connection. See Fig. 4. The piping for the condensate drain and external trap can be completed after the unit is in place.

All units must have an external trap for condensate drain- age. Install a trap at least 4 in. deep and protect against freeze-up. If a drain line is installed downstream from the external trap, pitch the line away from the unit at 1 in. per 10 ft of run. Do not use a pipe size smaller than the unit connection (3/4-in.). See Fig. 5.

The center drain plug looks like a star connection, however it can be removed with a 1/2 in. socket drive extension.

IV. STEP 4 — RIG AND PLACE UNIT

Inspect unit for transportation damage. File any claim with transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Tables 1A and 1B and Fig. 6 for additional information. Operating weight is shown in Tables 1A and 1B and Fig. 6.

Lifting holes are provided in base rails as shown in Fig. 6 and 7A and 7B. Refer to rigging instructions on unit.

CAUTION: All panels must be in place when rig- ging and lifting. Unit is not designed for handling by a fork truck. Damage to unit may result.

A. Positioning

Maintain clearance around and above unit to provide proper airflow and service access. See Fig. 7A and 7B.

Position unit on roof curb so that the following clearances are maintained: 1/4-in. clearance between roof curb and base rails on duct end, front and back of unit; 35/16-in. clearance between roof curb and condenser fan end of unit (see Fig. 2, sections A-A and C-C).

Do not install unit in an indoor location. Do not locate unit air inlet near exhaust vents or other sources of contaminated air.

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

After unit is in position, remove shipping materials and rig- ging skid.

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