Carrier 50TC Manuel d'instructions télécharger pdf (Page 13)

Step 6 — Rig and Place Unit

When the unit (50TC--D08, 50TC--D09, or 50TC--D12 only)

is ready to be rigged and no longer will be lifted by a fork

truck, the wood protector under the basepan must be

removed. Remove 2 screws from each base rail. Wood

protector will drop to the ground. See instructions on the unit

base rails.

Keep unit upright and do not drop. Spreader bars are

required. Rollers may be used to move unit across a roof.

Level by using unit frame as a reference. See Table 1 and

Fig. 8 for additional information.

Lifting holes are provided in base rails as shown in Fig. 8.

Refer to rigging instructions on unit.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in

equipment damage.

All panels must be in place when rigging. Unit is not

designed for handling by fork truck.

CAUTION

Before setting the unit onto the curb, recheck gasketing on

curb.

PositioningonCurb—

Position unit on roof curb so that the following clearances

are maintained: 6.4 mm (

in.) clearance between the

roof curb and the base rail inside the front and back,

0.0 mm (0.0 in.). clearance between the roof curb and the

base rail inside on the duct end of the unit. This will result

in the distance between the roof curb and the base rail

inside on the condenser end of the unit being

approximately equal to section C--C in Figs. 4 and 5.

Although unit is weatherproof, guard against water from

higher level runoff and overhangs.

After unit is in position, remove rigging skids and

shipping materials.

Step 7 — Convert to Horizontal and Connect

Ductwork (when required)

Unit is shipped in the vertical duct configuration. Unit

without factory--installed economizer or return air smoke

detector option may be field--converted to horizontal ducted

configuration. To convert to horizontal configuration,

remove screws from side duct opening covers and remove

covers. Using the same screws, install covers on vertical

duct openings with the insulation--side down. Seals around

duct openings must be tight. See Fig. 9.

Field--supplied flanges should be attached to horizontal

duct openings and all ductwork should be secured to the

flanges. Insulate and weatherproof all external ductwork,

joints, and roof or building openings with counter flashing

and mastic in accordance with applicable codes.

Do not cover or obscure visibility to the unit’s informative

data plate when insulating horizontal ductwork.

C06108

Fig. 9 -- Horizontal Conversion Panels

Step 8 — Install Outside Air Hood

Economizer Hood Removal and Setup -- Factory

Option

1. The hood is shipped in knock--down form and

located in the return air compartment. It is attached

to the economizer using two plastic tie--wraps.

2. To gain access to the hood, remove the filter access

panel. (See Fig. 10.)

3. Locate and cut the (2) plastic tie--wraps, being

careful to not damage any wiring. (See Fig. 11.)

4. Carefully lift the hood assembly through the filter

access opening and assemble per the steps outlined

in Economizer Hood and Two–Position Hood on

page 14.

FILTER ACCESS PANEL

INDOOR COIL ACCESS PANEL

C06023

Fig. 10 -- Typical Access Panel Locations

50TC

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 39 40

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Carrier 50TC Manuel d'instructions Page 13

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