1
Installation Instructions
ECD-SRT12TA-D2, ECD-SRT34TA-D2, ECD-SRT05TA-D2 Series
Read these instructions completely before attempting to install the Vertical
Accessory Ultra Low Leak Economizer.
CONTENTS
Safety Consideration . . . . . . . . . . . . . . . . . . . . .1
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Economizer Sensor Usage. . . . . . . . . . . . . . . . . . . . .2
Accessories List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
W7220 Menu Structure. . . . . . . . . . . . . . . . . . . . .9-12
Controller Setup and Configuration. . . . . . . .13-15
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Barometric Relief and Return Pressure
Drop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
*Jade W7220 Controller Addendum
*Certificate of Acceptance
Use QR Code Above to Access
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous dur to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform the basic maintenance funtions.
All other operations should be performed by trained service
personnel. When working on air-conditioning equipment, observe
precautions in the literature, tags, and labels attached to the unit,
and other safety precautions that may apply.
Follow allsafety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations.
It is important to recognize safety information. This is the safety-
alert symbol . When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which
will
result
in severe personal injury or death. WARNING signifies hazards
which
could
result in personal injury or death. CAUTION is used
to identify unsafe practices, which
may
result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which
will
result in enhanced installation, reliability, or
operation.
Small Rooftop Products
Select 3 to 12 ½ Tons
Accessory Ultra Low Leak Vertical Economizer
!
MicroMetl
California
& ASHRAE
Code
Compliant
WARNING
Electrical Shock Hazard
Can cause severe injury, death or property damage. Disconnect
power supply before beginning wiring, or making wiring
connections, to prevent electrical shock or equipment damage.
!
CAUTION
Equipment Damage Hazard
Electrostatic discharge can short equipment circuitry. Ensure
that you are properly grounded before handling the unit.
!
Economizer
Package
Unit Chassis
48/50TC
48/50HC
48/50LC
50TCQ
48/50HCQ
Carrier
Bryant
ICP
Carrier
Bryant
ICP
Carrier
Carrier
Bryant
ICP
Carrier
Bryant
ICP
ECD-SRT12TA
Chassis 1
48/50TC
A04,A05,A06,
B04,B05,B06
580J,558J
04A,05A,06A,
04G,05G,06G
RGS,RAS
036,048,060
48/50HC A04 581J,551J 04A
RGH,RAH
036
48/50LC A04
50TCQ
A04,A05
548J
04A,05A
RHS
036, 048
50HCQ A04 549J 04A RHH 036
Chassis 2
48/50TC
A07,B07
580J,558J
07A,07G
RGS,RAS 072
48/50HC
A05,A06
581J,551J
05A,06A
RGH,RAH
048,060
48/50LC
A05,A06
50TCQ
A06,A07
548J
06A,07A
RHS
060,072
50HCQ
A05,A06
549J
05A,06A
RHH
048,060
ECD-SRT34TA
Chassis 3
48/50TC
A08,D08
580J,558J
08A,08D
RGS,RAS
090,091
48/50HC A07
581J,551J
07A
RGH,RAH
072
N/A
N/A
N/A
N/A
50HCQ A07 549J 07A RHH 072
Chassis 4a
48/50TC
A09,A12,
D09,D12,D14
580J,558J
09A,12A,
09D,12D,14D
RGS,RAS
101,102,121
120,150
48/50HC
D08,D09
581J,551J
09D,12D
RGH,RAH
090,120
48/50LC 07
50TCQ
D08,D09,D12
548J
08D,09D,12D
RHS
090,102,120
50HCQ
D08,D09
549J
08D,09D
RHH
090,102
Chassis 4b
ECD-SRT05TA
Chassis 5
48/50TC D16 580J,558J 16D RGS,RAS 180 48/50HC D14 581J,551J 14D RGH,RAH 150
48/50LC
08,09,12
N/A
N/A
N/A
N/A
N/A
N/A
Chassis 5
N/A
N/A
N/A
N/A
N/A
N/A
N/A
50TCQ D14
548J 14D
RHS 150
50HCQ D12 549J 12D RHH 120
Base Chasis/Curb Design (3-23 ton)
GENERAL (When ordered with controls)
The system utilizes the latest technology available for integrating
the use of free cooling with mechanical cooling for packaged
rooftop units. The solid-state control system optimizes energy
consumption, zone comfort, and equipment cycling by operating
the compressors when the outdoor-air temperature is too warm,
integrating the compressor with outdoor air when free cooling
is available, and locking out the compressor when outdoor-air
temperature is too cold. Demand control ventilation is supported.
This can be used with single or multiple speed indoor fans.
The MicroMetl Ultra Low Leak Economizer utilizes gear-driven
technology with a direct-mount spring return actuator that will close
upon loss of power. When ordering with controls, The Ultra Low
Leak Economizer comes standard with a Mixed Air Sensor (Also
called The Supply Air Temperature Sensor), and the option of
Adjustable Dry Bulb, Enthalpy, Differential Adjustable Dry Bulb, and
Differential Enthalpy Sensors. CO2 and Smoke Detectors Sensor
are an additional field installed option.
Table 1
*QR Code
