Economi$Er Iv Standard Sensors - Carrier 50HE003-006 Installation Instructions Manual

Single-package rooftop electric cooling units with optional electric heat

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Table of Contents

Enlarged version

NOTE:

These instructions are for installing the optional

EconoMi$er IV and EconoMi$er2 only. Refer to the accessory

EconoMi$er IV or EconoMi$er2 installation instructions when

field installing an EconoMi$er IV or EconoMi$er2 accessory.

1. To remove the existing unit filter access panel, raise the

panel and swing the bottom outward. The panel is now

disengaged from the track and can be removed. (See

Fig. 29.)

2. The box with the economizer hood components is shipped

in the compartment behind the economizer. The

EconoMi$er IV controller is mounted on top of the

EconoMi$er IV in the position shown in Fig. 24. The

optional EconoMi$er2 with 4 to 20 mA actuator signal

control does not include the EconoMi$er IV controller. To

remove the component box from its shipping position,

remove the screw holding the hood box bracket to the top

of the economizer. Slide the hood box out of the unit. (See

Fig. 30.)

IMPORTANT: If the power exhaust accessory is to be installed

on the unit, the hood shipped with the unit will not be used and

must be discarded. Save the aluminum filter for use in the power

exhaust hood assembly.

3. The indoor coil access panel will be used as the top of the

hood. Remove the screws along the sides and bottom of

the indoor coil access panel. (See Fig. 31.)

4. Swing out indoor coil access panel and insert the hood

sides under the panel (hood top). Use the screws provided

to attach the hood sides to the hood top. Use screws

provided to attach the hood sides to the unit. (See Fig. 32.)

5. Remove the shipping tape holding the economizer

barometric relief damper in place.

6. Insert the hood divider between the hood sides. (See

Fig. 32 and 33.) Secure hood divider with 2 screws on

each hood side. The hood divider is also used as the

bottom filter rack for the aluminum filter.

7. Open the filter clips which are located underneath the

hood top. Insert the aluminum filter into the bottom filter

rack (hood divider). Push the filter into position past the

open filter clips. Close the filter clips to lock the filter into

place. (See Fig. 33.)

8. Caulk the ends of the joint between the unit top panel and

the hood top. (See Fig. 31.)

9. Replace the filter access panel.

10. Install all EconoMi$er IV accessories. EconoMi$er IV

wiring is shown in Fig. 34. EconoMi$er2 wiring is shown

in Fig. 35.

Barometric flow capacity is shown in Fig. 36. Outdoor air

leakage is shown in Fig. 37. Return air pressure drop is shown in

Fig. 38.

FILTER ACCESS PANEL

Fig. 29 --- Typical Access Panel Locations

COMPRESSOR

ACCESS PANEL

OUTDOOR-AIR OPENING AND

INDOOR COIL ACCESS PANEL

C06023

Fig. 30 --- Hood Box Removal

INDOOR

COIL

ACCESS

PANEL

Fig. 31 --- Indoor Coil Access Panel Relocation

LEFT

HOOD

SIDE

19 1/16"

HOOD DIVIDER

Fig. 32 --- Outdoor- -Air Hood Construction