Accessories List; Installation - MicroMetl ECD-SRTCB-D0 Install Manual

ACCESSORIES LIST

The Economizer system has several field-installed accessories
available to optimize performance. Refer to Table 6 for authorized
parts and power exhaust descriptions.
Table 5 - Economizer Field-Installed
Accessories
DESCRIPTION
Small Cabinet Power Exhaust 208-230 v 1 Ph
Small Cabinet Power Exhaust 460 v 3Ph
Large Cabinet Power Exhaust 208-230 v 1 Ph
Large Cabinet Power Exhaust 460 v 3 Ph
Extra Large Cabinet Power Exhaust 208-230 v 1 Ph
Extra Large Cabinet Power Exhaust 460 v 3 Ph
Note: Power exhausts listed above are propeller type. Centrifugal
power exhausts are also available.

INSTALLATION

1. Turn off unit power supply(s) and install lockout tag.
2.
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. 2.)
Remove the indoor coil access panel and discard. (See Fig. 2.)
3.
4.
The box with the economizer hood components is shipped with the
economizer. Remove hood from packaging. The hood top and sides
are shipped factory assembled.
NOTE: If the power exhaust accessory is to be installed on the unit, the
hood shipped with the economizer will not be used and may be discarded.
Save the aluminum filter for use in the power exhaust hood assembly.
5. Insert the hood divider between the hood sides. (See Fig. 3) Secure
hood divider with 2 screws (provided) on each hood side. Screws
should go through the hood sides into the divider. The hood divider
is also used as the bottom filter rack for the aluminum filter. On hood
for extra large cabinet install filter divider. (See Fig. 4.)
6. Slide the Economizer assembly into the rooftop unit. (See Fig. 6). On
small and large cabinets be sure to engage the rear economizer flange
under the tabs in the return-air opening of the unit base. (See Fig. 7)
*Economizer
Actuator
Plug
*Economizer
Dry Bulb
Outside Air
Sensor
*On
ECD-SRT**CA-D0D*
Shipping
Only
Tape
Fig. 1 - Economizer Component Locations —
(Small Cabinet Economizer Shown)
7.
8.
9.
PART NUMBER
NOTE: The 12-pin jumper plug should be saved for future use, in
PPD-SRT12TA-D-1V the event that the economizer is removed from the unit. The jumper
plug is not needed as long as the economizer is installed.
PPD-SRT12TA-D-4V
PPD-SRT34TA-D-1V
10. While everything is open install and wire any other accessories
PPD-SRT34TA-D-4V
PPD-SRT05TA-D-1V
PPD-SRT05TA-D-4V
11. Attach the provided economizer controls to a field supplied
NOTE: If also installing a power exhaust accessory, skip step 12
and follow the power exhaust instructions instead.
12. Some economizer hoods require that the hood divider be field
13. Check all wiring for safety then reapply power to the unit. Verify
14.
15.
16. To adjust economizer minimum position and other settings, refer
Filter Access Panel
Gear-Driven
Damper
Barometric Relief
Dampers
3
Secure the economizer to unit along side and bottom flanges using
the screws provided. (See Fig. 6)
Remove the tape securing the relief dampers in place.
For ECD-SRT**C*-D0D* remove and save the 12-pin jumper plug
from the unit wiring harness (located in the upper left corner of the
unit). Insert the economizer plug into the unit wiring harness. Refer
to Fig. 9 for typical wiring diagram.
and/or sensors as applicable and convenient, per their installation
instructions. Some accessories require that unit ducting already be
installed.
economizer control system.
installed into hood per Fig. 3. Install economizer hood over the
economizer. Use screws provided see Fig. 3.
correct operation and setting of the accessory(s) per the Configuration
and Operations sections of the instruction.
Replace the filter access panel. Slide top of panel into track and lift.
Push bottom of panel into place.
Install the economizer hood filter(s) by opening the filter clips which
are located underneath the hood top. Insert the aluminum filter(s)
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. 5.)
to instructions provided with specific field supplied economizer
controller.
Fig. 2 - Typical Access Panel Locations
Compressor
Access Panel
Outdoor-Air Opening and
Indoor Coil Access Panel