Carrier CRECOMZR077A00, CRECOMZR081A00, CRECOMZR079A00 Installation Instructions Manual

Small Rooftop Products

Select 3 to 12 ½ Tons

(48/50LC 14 Not Included)

Horizontal EconoMi$er X Accessory

Installation Instructions

P/Ns CRECOMZR077A00, CRECOMZR079A00,CRECOMZR081A00

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . 1

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

ACCESSORIES LIST . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTRUCTIONS FOR 48/50LC

07-12 UNITS ONLY . . . . . . . . . . . . . . . . . . . . . . 11

Installing Optional HH57AC081 Single Outside Air

Enthalpy Sensor . . . . . . . . . . . . . . . . . . . . . . . . 14

Installing Differential Return Air Sensor . . . . . . . 15

California’s Title 24 High Temperature Limit

Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Demand Controlled Ventilation (DCV) . . . . . . . . . 15

Remote (Downstairs) Monitoring of Controller’s

Fault Detection and Diagnostics . . . . . . . . . . . 16

GENERAL JADE W7220 CONTROLLER AND

SENSOR INFORMATION . . . . . . . . . . . . . . . . . 17

W7220 Economizer . . . . . . . . . . . . . . . . . . . . . . . . 17

User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Using the Keypad with Menus . . . . . . . . . . . . . . . 17

Using the Keypad with Settings and Parameters 17

Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Programming the Jade W2770 Controller . . . . . . 17

• SETPOINTS

• SYSTEM SETUP

Checkout Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SETUP AND CONFIGURATION . . . . . . . . . . . . . . 23

W7220 Economizer Module Wiring . . . . . . . . . . . 23

Time-out and Screen Saver . . . . . . . . . . . . . . . . . 24

START-UP AND OPERATION . . . . . . . . . . . . . . . . 24

Cooling with EconoMi$er X . . . . . . . . . . . . . . . . . 24

Heating with EconoMi$er X . . . . . . . . . . . . . . . . . 24

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 25

Power Loss (Outage or Brownout) . . . . . . . . . . . 25

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

• CLEARING ALARMS

SAFETY CONSIDERATIONS

Installation of this accessory can be hazardous due to system
pressures, electrical components and equipment, and equip­ment locations (such as a roof or elevated surface). Only
trained qualified installers and service technicians should in­stall, start-up, and service this equipment.

When installing this accessory, observe precautions in the litera­ture and on any labels attached to the equipment and all other safe­ty precautions may apply.

• Follow all safety codes

• Wear safety glasses and work gloves

• Use care in handling and installing the accessory

It is important to recognize safety information. This is the safety­alert 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.

WARNING

ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury

or death. Before performing service or maintenance opera­tions on the unit, always turn off main power switch to unit
and install lock(s) and lockout tag(s). Unit may have more
than one power switch. Ensure electrical service to rooftop
unit agrees with voltage and amperage listed on the unit rat­ing plate.

CAUTION

CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care

and wear appropriate protective clothing, safety glasses and
gloves when handling parts and servicing roof top units.

CAUTION

Failure to follow this caution may result in personal injury
and damage to the unit. Cover the duct opening as a precau­tion so objects cannot fall into the return duct opening. Be
sure to remove the cover when installation is complete.

GENERAL

IMPORTANT: These economizers meet all the economizer
requirements as laid out in California’s Title 24 mandatory
section 120.2 (fault detection and diagnostics).

Catalog No. 04-53480208-01 Printed in U.S.A. Form IIK-CRECOMZR77-03 Pg 1 11-18 Replaces: NEW

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

IMPORTANT: Read these instructions completely before at­tempting to install accessory economizer.

®

The EconoMi$er

X system utilizes the latest technology avail­able for integrating the use of free cooling with mechanical cool­ing for packaged rooftop units. The code compliant Jade W7220
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 controlled ventilation is supported.

This EconoMi$er X can be used with 1 or 2 speed indoor fan
motor units. (All other speed settings listed are for future use.)

The EconoMi$er X system utilizes gear-drive technology with a
direct-mount spring return actuator that will close upon loss of
power. The EconoMi$er X system comes standard with fault de­tection and diagnostics (FDD), an outdoor air temperature sen­sor, and mixed air temperature sensor (also called supply air
temperature sensor). Outdoor enthalpy, indoor (return) dry bulb
or enthalpy, and CO

sensors are available for field installation.

2

Standard integrated barometric relief dampers provide natural
building pressurization control. An optional power exhaust
system is available for applications requiring even greater ex­haust capabilities. The power exhaust set point is adjustable at
the EconoMi$er X controller.

See Table 1-3 for package usage. See Table 4 for package con­tents. See Table 5 for sensor usage.

Table 1 — Carrier Package Usage

MODEL NUMBER

48/50FC 04-07
48/50GC 04-06

48/50HC, LC 04-06

48/50TC 04-07

50TCQ 04-07
50HCQ 04-06

50KCQ04-06

48/50KC 04-06

48/050HC 07-12

48/50LC 07

48/50TC 08-14

50TCQ 08-12
50HCQ 07-09

48/50HC 14

48/50LC 08-12

48/50TC 16

50TCQ 14
50HCQ 12

Small Cabinet

Large Cabinet

Extra Large Cabinet

ECONOMI$ER X

PART NUMBER

CRECOMZR077A00

CRECOMZR079A00

CRECOMZR081A00

Table 2 — Bryant Package Usage

MODEL NUMBER

Small Cabinet

581K/551K 04-06
582K/559K 04-07

581J/551J 04-06

549J/547J/559J/582J 04-06

548J/580J/558J 04-07

Large Cabinet

581J/551J 07-12
580J/558J 08-14

548J 08-12
549J 07-09

Extra Large Cabinet

581J/551J 14
580J/558J 16

548J 14
549J 12

Table 3 — ICP Package Usage

MODEL NUMBER

Small Cabinet

RAV/RGV 036-072

RAW/RGW 036-060

RAH/RGH 036-060
RAS/RGS 036-072

RHS 036-072
RHX/RHH 036-060
RAX/RGX 036-060

Large Cabinet

RAH/RGH 072-120
RAS/RGS 090-150

RHH 072-102

RHS 090-120

Extra Large Cabinet

RAH/RGH 150
RAS/RGS 180

RHS 150
RHH 120

ECONOMI$ER X

PART NUMBER

CRECOMZR077A00

CRECOMZR079A00

CRECOMZR081A00

ECONOMI$ER X

PART NUMBER

CRECOMZR077A00

CRECOMZR079A00

CRECOMZR081A00

2

Table 4 — Package Contents

PACKAGE NO. QTY CONTENTS

EconoMi$er Horizontal Damper

1

Assembly with Actuator and
HH79ZZ007 OA Sensor

Jade HW63AW002 (HW: W7220)

1

Controller with Attached Harness*
HH77ZZ007 Mixed Air Temp Sensor

1

CRECOMZR077A00

CRECOMZR079A00

CRECOMZR081A00

*Shipped in hardware kit for field installation.
HW – Honeywell

(ring terminal)*
1 48TMHSRSE--A20 4-Wire Harness*
1 Hood Assembly
1 Aluminum Filter
1 Front Blank Off Panel
1 Filter Access Door
1 Hardware Bag*

EconoMi$er Horizontal Damper
1

Assembly with Actuator and

HH79ZZ007 OA Sensor

Jade HW63AW002 (HW: W7220)
1

Controller with Attached Harness*

HH77ZZ007 Mixed Air Temp Sensor
1

(ring terminal)*
1 48TMHSRSE--A20 4-Wire Harness*
1 Hood Assembly
1 Aluminum Filter
1 Front Blank Off Panel
1 Horizontal Blank Off Panel
1 Filter Access Door
1 Hardware Bag*

EconoMi$er Horizontal Damper
1

Assembly with Actuator and

HH79ZZ007 OA Sensor

Jade HW63AW002 (HW: W7220)
1

Controller with Attached Harness*

HH77ZZ007 Mixed Air Temp Sensor
1

(ring terminal)*
1 48TMHSRSE--A20 4-Wire Harness*
1 Hood Assembly
1 Aluminum Filter
1 Front Blank Off Panel
1 Horizontal Blank Off Panel
1 Filter Access Door
1 Hardware Bag*

Table 5 — EconoMi$er X Sensor Usage

APPLICATION

Outdoor Air
Dry Bulb

Mixed Air
Sensor

Single Enthalpy HH57AC081
Differential Dry

Bulb or Enthalpy
CO

for DCV

2

Control Using a
Wall-Mounted
CO

Sensor

2

for DCV

CO

2

Control Using a
Duct-Mounted
CO

Sensor

2

* Includes HH57AC081 sensor and wiring harness.
†Accessory CO2 sensors.
**Accessory aspirator boxes required for duct-mounted applications.
††CRCBDIOX005A00 is an accessory that contains both 33ZCSEN-

CO2 and 33ZCASPCO2 accessories.

ECONOMI$ER X WITH OUTDOOR AIR DRY

The HH79ZZ007 outdoor air dry bulb sensor is
factory installed on economizer.

HH79ZZ007 provided with economizer and field
installed in blower compartment.

CRDIFRASN01A00* (When available,
or MicroMetl 9901-2022-DIFF JC2)

33ZCSENCO2 or CGCDXSEN004A00

33ZCSENCO2 or

CGCDXSEN004A00†

33ZCSENCO2 or

CGCDXASP00100**

BULB SENSOR

ACCESSORIES REQUIRED

and

or CRCBDIOX005A00††

ACCESSORIES LIST

The EconoMi$er X has several field-installed accessories
available to optimize performance. Refer to Table 6 for autho­rized parts and power exhaust descriptions.

Table 6 — EconoMi$er X Field-Installed Accessories

DESCRIPTION PART NUMBER

Small & Large Cabinet Power Exhaust
208/230-v 1 Ph

Small & 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

Enthalpy Sensor (OA) HH57AC081
Differential (Return) Sensor CRDIFRASN01A00*
CO

Sensor and Aspirator Box CRCBDIOX005A00

2

Return Air CO

Room Sensor (4 to 20 mA)

CO

2

Aspirator Box for Duct Mount
CO

Sensor (4 to 20 mA)

2

Hinged Filter Door Kit for Small Cabinet CRHNGPNL001A00
Hinged Filter Door Kit for Large Cabinet CRHNGPNL002A00
Hinged Filter Door Kit for Extra Large

Cabinet

*When available, or MicroMetl 9901-2022-DIFF JC2

Sensor (4 to 20 mA) CRCBDIOX002A00

2

CRPWREXH028A01

CRPWREXH029A01

CRPWREXH082A01

CRPWREXH083A01

33ZCSENCO2 or

CGCDXSEN004A00

33ZCASPCO2 or

CGCDXASP001A00

CRHNGPNL003A00

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 and dis­carded. See Fig. 2.

WARNING

ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal inju-

ry and/or death.
Disconnect power supply and install lockout tag before at-

tempting to install accessory.

3. Remove the indoor coil access panel and discard. See
Fig. 2. Remove the horizontal cover panel (see Fig. 2).
Reinstall panel over return opening in bottom of unit.

4. The EconoMi$er X hood assembly is shipped assembled.
Aluminum filter must be installed on some models. See
Fig 3.

5. Set the EconoMi$er X assembly upright. See Fig. 4.

6. Insert the EconoMi$er X assembly into the rooftop unit,
positioning the EconoMi$er X to the far left side of the
opening. See Fig. 5.

3

Damper

Compressor
Access Panel

Outdoor-Air Opening and
Indoor Coil Access Panel

Filter Access Panel

Horizontal
Cover Panel

B

A

HOOD

ALUMINUM
FILTER

FILTER
CLIP

CLEANABLE
ALUMINUM
FILTER

OUTSIDE AIR

RELIEF AIR

Wiring Harness PlugBarometric Relief

Outside Air
Temperature Sensor

Red Shipping Tape

Outside Air
Damper

Fig. 1 — EconoMi$er X Component Locations

Fig. 2 — Typical Outdoor Air Section Access Panel

Locations

Fig. 4 — EconoMi$er X Positioned for Installation in

Unit

Fig. 5 — Top View of EconoMi$er X Installation

ECONOMIZER P/N A B SHIP WT.

CRECOMZR077A00 25.1” 29.19” 95 lb
CRECOMZR079A00 25.1” 37.25” 150 lb
CRECOMZR081A00 24.81” 53.36” 245 lb

Fig. 3 — EconoMi$er X Hood Detail

4

Fig. 6 — EconoMi$er X Installed in Unit

Barometric
Relief Dampers

Outside Air
Temperature
Sensor

HVAC
Filters

Outdoor
Air Damper

Mounting
Screws

ECONOMI$ER X
HOOD

ACCESS DOOR
TO FILTERS

SCREWS

ECONOMI$ER X
HOOD

HORIZONTAL
BLANK-OFF

FRONT BLANK-OFF PANEL

ECONOMI$ER X
HOOD

ACCESS DOOR
TO FILTERS

FRONT BLANK-OFF PANEL

FILTERS

ECONOMI$ER X
PLUG

ECONOMI$ER X
ACTUATOR

SCREW

WIRING
HARNESS

7. Slide the EconoMi$er X assembly all the way back into
the unit until it locks into the horizontal opening of the
HVAC (heating, ventilation and air conditioning) unit.

8. Secure the EconoMi$er X mounting flanges to the HVAC
unit with the screws provided. See Fig. 6.

9. Install a screw through the pre-punched hole in the
EconoMi$er X assembly into the flange on the horizontal
duct opening. See Fig. 5 and 10.

10. Remove the red tape securing the relief dampers for ship­ping purposes.

11. On some units, the EconoMi$er X assembly and hood does
not reach to the top of the unit. In this case a front blank-off
panel must be installed. Install provided front blank-off
panel above hood. Screw in place. (See Fig. 8 and 9.)

Fig. 8 — Horizontal Return Opening Blank-Off Panel

Fig. 9 — Front Blank-Off Panel Installation Panel

Fig. 7 — EconoMi$er X Hood Installation

Fig. 10 — Top View of EconoMi$er X Installed in Unit

NOTE: The front blank-off panel must be installed before the
hood because the top of the hood fits into a channel in the bottom
of the panel.

12. Install the EconoMi$er X hood over the EconoMi$er X.
Use screws provided. (See Fig. 7 and 9.) Insert screw
through right side flange of hood into EconoMi$er X
flange.

5

13. On some units, the return damper does not reach to the top

0

500

1000

1500

2000

2500

0 0.05 0.1 0.15 0.2 0.25 0.3

Small Cabinet

Large a nd Extra
Large Cabinet

0

1000

2000

3000

4000

5000

6000

00.10.20.3 0.4

Small Cabinet

Large Cabinet

Extr a Large Cabinet

INDOOR FAN MOTOR
ACCESS PANEL

HEATING ACCESS
PANEL

THERMOSTAT
CONNECTION
ACCESS PANEL

CENTER POST

of the horizontal return opening in the unit. In this case, a
horizontal blank-off must be installed. Install the horizon­tal blank-off at the top of the horizontal return opening.
(See Fig. 8.) Screw in place through pre-punched holes.

14. Install access door next to hood. Screw bottom of door to
HVAC unit. (See Fig. 7 and 9.) For the economizer for the
extra large cabinet, install plastic inserts on right-hand ver­tical post and install long gasketed screws along the verti­cal edge. Use standard serrated screws along the bottom of
the panel for all units.

15. See economizer performance charts in Fig. 11 and 12. See
base unit installation manual to make adjustments to meet
building ventilation requirements.

ROOFTOP UNIT’S
12-PIN MALE PLUG

ECONOMI$ER X
12-PIN FEMALE PLUG

Fig. 13 — Connect EconoMi$er X Harness to Unit PL6

Economizer Harness

17. Remove and save the 12-pin jumper plug from the unit
economizer harness – located in the upper left corner of

RELIEF FLOW (CFM)

the unit. Insert the EconoMi$er X plug into the unit wiring
harness. See Fig. 13.

NOTE: The 12-pin jumper plug should be saved for future use, in
the event that the EconoMi$er X assembly is ever removed. The

RETURN DUCT STATIC PRESSURE (i n. wg)

jumper plug is not needed as long as the EconoMi$er X assembly
is installed.

Fig. 11 — Barometric Flow Capacity

18. Remove the indoor blower access panel and the panel(s)
covering the unit control box. See Fig. 14.

RETURN AIR F LOW (CFM)

RETURN DUCT STATIC PRESSURE DRO P (in. wg)

16. If the EconoMi$er X will be operating with an enthalpy

Fig. 12 — Return Air Pressure Drop

outside air sensor, remove the factory-installed
HH79ZZ007 dry bulb sensor from the front face of the
economizer (see Fig. 1), and install the accessory enthalpy
sensor HH57AC081 in the same location. Holes are pre­punched. Connect the (2) wire gray harness with plug
from the EconoMi$er X to the enthalpy sensor. See wiring
diagram Fig. 25 and 30. Refer to the “Installing Optional
HH57AC081 Outside Air Enthalpy Sensor” section for
more details on enthalpy settings.

Fig. 14 — Typical Indoor Fan Motor Access Panel

Locations

19. In the hardware kit provided with the EconoMi$er X
assembly is the HH63AW002 Jade controller (Honeywell
W7220). The controller is attached to a mounting bracket
and the EconoMi$er X harness is attached to the control­ler. Mount the controller assembly on the left side of the
unit control box. Screw bracket to the control box through
pre-punched holes in control box. See Fig. 15.

6

NOTE: Some control box configurations may differ.

CENTRAL
TE RM I NA L
BOARD

WHITE
WIRE

10-PIN
FEMALE
PLUG FROM
CONTROLLER

Fig. 15 — Mount Controller Assembly in Unit Control

Box

20. Unplug the 10-pin female ECON plug currently connected
to the Central Terminal Board (CTB). See Fig. 16.

Fig. 17 — Connect 10-pin Plugs Together

22. Connect the 10-pin female plug from the Jade controller
harness to ECON on the CTB. See Fig. 18 and 25.

Fig. 16 — Unplug ECON plug from Central

Terminal Board (CTB)

21. Connect the 10-pin female ECON plug removed from the
CTB to the 10-pin male plug from the Jade controller har­ness. See Fig. 17 and 25.

Fig. 18 — Connect 10-pin Jade Plug to Central

Terminal Board (CTB)

23. Connect the White wire from the Jade controller harness to
the W1 terminal on the CTB. See Fig. 18 and 25.

24. Connect the red and brown wires from the Jade controller
harness to the CTB. See Fig. 19 and 25. The red wire con­nects to “R” on the CTB, and the brown wire connects to
“C”.

7

Fig. 19 — Connect Red and Brown Wires to Central

CENTRAL
TERMINAL
BOARD

Terminal Board (CTB)

25. Locate the green wire with yellow stripe from the Jade
controller harness and screw it to the control box (ground).
See Fig. 20.

4-PIN MALE PLUG

FROM CONTROLLER

48TMHSRSE--A20

HARNESS

Fig. 21 — Connect 48TMHSRSE--A20 Harness to

Harness from Controller

27. Route the 4-wire 48TMHSRSE--A20 harness through the
divider between the control box and the indoor blower sec­tion. See Fig. 22.

48TMHSRSE--A20

HARNESS

Fig. 20 — Connect Ground Wire From Controller

26. Locate the 48TMHSRSE--A20 harness (with 4-pin female
plug) provided in the hardware kit with the EconoMi$er X
assembly. Connect the 48TMHSRSE--A20 harness to the
4-wire harness with a male plug from the Jade controller
harness. See Fig. 21 and 25.

CONTROL

BOX

NOTE: Some control box configurations may differ.

INDOOR
BLOWER
SECTION

Fig. 22 — Route 48TMHSRSE--A20 Harness to Indoor

Blower Section

28. Screw the HH79ZZ007 mixed air (MAT) sensor to the left
side edge of indoor blower through pre-punched hole, see
Fig. 23. Confirm that the screw does not interfere with
blower rotation. Connect the (2) spade terminals on the
HH79ZZ007 sensor to the orange and brown wires from
the 4-wire 48TMHSRSE--A20 harness. See Fig. 23
and 25.

8

Connect (2)
green wires from
HH79ZZ007 sensor
to the brown and
orange wires from
the 48TMHSRSE--A20

HH79ZZ007
MAT sensor
(Ring
terminal)

PINK AND
VIOLET WIRES
FROM
48TMHSRSE--A20
HARNESS

INDOOR

BLOWER

Indoor blower

Fig. 23 — Mount and Connect Mixed Air Sensor

29. Connect the pink and violet wires from the 4-wire
48TMHSRSE--A20 harness to the pink and violet termi­nals in the wire bundle in the indoor blower section. See
Fig. 24 and 25.

Fig. 24 — Connect Pink and Violet Wires in Indoor

Blower Section

30. If using differential return sensor or DCV sensor, install it
now. See installation details later in the instructions and
the wiring diagram for further information.

9

Plug

4-Pin Male

UNIT CONTROL BOX COMPARTMENT

Harness with

48TMHSRSE--A20

4-Pin Female Plug

MAT

ORG

1

4

ORG

BRN

2

BRN

Controller.

W7220 JADE

Unit Control Box

Field Mounted in

C

BRN

9

R

RED

10

OAT

OAT

MAT

VIO

PNK

Plug

10-Pin Male

334

1

2

S-BUS

ACT 24V

BLU

10

1

S-BUS

ACT COM

“R” ON CTB

BLK

GRA

GRA

RED

645913827

8

2

6

7

5

10

ACT 2-10

ORG

3

EXH1

AUX1 OUT

“C” ON CTB

YEL

BRN

4

9

E-GRD

IAQ 2-10

IAQ COM

BLK

BLU

GRN / YEL

CO2

(Optional)

from CTB

10-Pin Female

Plug Disconnected

AUX2 IN

WHT

Ground

“W1” on CTB

BLU

1

Y1 IN

Y1 OUT

GRA

2

Y2 OUT

ORG

3

OCC

Y2 IN

BLK

YEL

5

4

ECON on

10-Pin Female

Plug Connects to

6

Board

Central Terminal

7

8

Harness

50HE403859

GRN

Indoor Blower

Field Mount on

Mixed Air Sensor

HH79AH001

GRN

HONEYWELL C7250

Harness

Economizer

VIO

VIO

In Unit

6

PNK

PNK

7

BLU

2

12-Pin Female

Plug from Economizer

VIO

PNK

BLU

GRN

GRN

Sensor

Dry Bulb

Outside Air

ECONOMIZER RETURN CHAMBER INDOOR BLOWER SECTION

HH79AH001

1

HONEYWELL C7250

1

RED

1

BLK

BLK

2

BLK

2

PNK

RED

GRA

GRA

GRA

3

10

GRA

3

WHT

3

11

GRA

4

GRN

4

1

5

RED

Actuator

Economizer

YEL

BRN

ORG

Plug in Unit

12-Pin Male

8

9

4

12

ORG

GRA

GRA

PL6

Plug

S-Bus

S-Bus

123

OA

RA

DA

Temp & Humidity

HH57AC081

HH57AC081

BRN

Air Sensor

Enthalpy Outside

YEL

To Optional

Power Exhaust

1

Either the OAT or the Enthalpy

Sensor can be used but not both.

Remove OAT if Enthalpy’s used.

1

LEGEND

CTB: Central Terminal Board

Refer to Figure 31 for wiring optional

Refer to Figures 33 and 34 for Remote
2

MAT: Mixed Air Temperature Sensor

Differential Return Air Sensor kit.

Fault Detection and Diagnostic Monitoring.

3

OAT: Outside Air Temperature Sensor

Fig. 25 — Typical EconoMi$er X Wiring Diagram for 1 or 2 Speed Units

(Not for 48/50LC 07-12 Units)

10

INSTRUCTIONS FOR 48/50LC

07-12 UNITS ONLY

IMPORTANT: This section is for economizer installation in­structions on 48/50LC 07-12 units only.

1. Follow steps 1 through 19 in the Installation section.

2. The 48/50LC 07-12 units require different wiring than is
factory-attached to the W7220 Jade controller. Disconnect
the complete wiring harness factory-attached to the
W7220 Jade controller, as shown below in Fig. 26. This
harness can be discarded.

NOTE: The 4-wire 48TMHSRSE--A20 harness provided with the
economizer will also NOT be used on the 48/50LC 07-12 units,
see Fig. 27.

Fig. 26 — Remove Complete Harness Factory-

Attached to W7220 Controller

Fig. 27 — 48TMHSRSE--A20 Not

12 Units

3. The 48/50LC 07-12 units that do not have a factory-installed
economizer will have a new Jade W7220 controller wiring
harness shipped in the control box section of the HVAC unit.
This harness, Carrier part number 48LCHSRADH-A00, is
shown below in Fig. 28 and 30.

Used on 48/50LC 07-

Fig. 28 — 48LCHSRADH-A00 W7220 Controller Harness Shipped With 48/50LC 07-12 Units

11

Fig. 29 — Photo of 48LCHSRADH-A00 W7220

Controller Harness Shipped With

48/50LC 07-12 Units

4. The connectors on the right side of Fig. 28 on the 48LCHS­RADH-A00 harness attach to the Jade W7220 controller
installed in the unit control box. See Fig. 28 and 30.
48LCHSRADH-A00 harness connectors are labeled to eas­ily identify the plug-in location on the controller.

5. Locate the Compressor Staging Control (CSC) board in
the HVAC unit. When a field-installed economizer is used,
the J5 jumper on the CSC must be removed. Remove the
J5 jumper. See Fig. 30.

6. The connectors on the left side of Fig. 28 on the 48LCHS­RADH-A00 harness attach to the unit’s CSC board. Con­nect J3 and J5 plugs to the CSC board. See Fig. 30.

7. Screw the green wire with yellow stripe in the 48LCHS­RADH-A00 harness to the control box (ground). See
Fig. 20 and 30.

8. Mount the provided HH79ZZ007 mixed air temperature
(MAT) sensor to the indoor blower. Confirm that the
screws do not interfere with blower rotation (see Fig. 23).
Connect the (2) spade terminals on the HH79ZZ007 to
orange and brown wires in the indoor blower section wire
bundle.

9. If using a differential return sensor or DCV sensor, install
it now. See installation details later in this instructions and
the wiring diagram for further information.

12

NOTE: Harness attached to the W7220 controller from the Carrier
factory is removed and not used with 48/50LC 07-12 units.

Fig. 30 — Typical EconoMi$er X Wiring Diagram For 48/50LC 07-12 Units

13

Installing Optional HH57AC081 Single Outside

4/ (108)

2/ (70)

/ (21)

2/ (55)

Air Enthalpy Sensor

When using the HH57AC081 (Honeywell C7400S) enthalpy
sensor for outside air changeover (see Fig. 32), the existing
HH79ZZ007 dry bulb sensor must be removed. The enthalpy
sensor will be mounted in the same location as the dry bulb
sensor (see Fig. 1). When the enthalpy sensor’s OA tempera­ture, enthalpy and dew point are below the respective set
points, the outside air can be used for free-cooling. When any
of these is above the set point, free-cooling will not be avail­able. Figure 31 shows the enthalpy boundaries in the W7220

Jade controller. There are (5) enthalpy boundaries (set points
ES1 through ES5), which are defined by dry bulb temperature,
enthalpy, and dew point. ES3 is the default setting. Table 7
shows the High Limit Curves for each setting.

NOTE: To use the HH57AC081 sensor for outside air sensor, the
dipswitches on the sensor must be set to OFF-OFF-OFF. See
Tab le 8.

The (2) gray wires with a plug from the EconoMi$er X harness
in the return chamber plug directly into the HH57AC081 en­thalpy sensor. See Fig. 25 and 30 for wiring.

Fig. 31 — Enthalpy Curve Boundaries

Table 7 — Single Enthalpy and Dual Enthalpy High Limit Curves

ENTHALPY

CURVE

ES1 80.0 60.0 28.0 80.0 36.8 66.3 80.1
ES2 75.0 57.0 26.0 75.0 39.6 63.3 80.0
ES3 70.0 54.0 24.0 70.0 42.3 59.7 81.4
ES4 65.0 51.0 22.0 65.0 44.8 55.7 84.2
ES5 60.0 48.0 20.0 60.0 46.9 51.3 88.5

HL 86.0 66.0 32.4 86.0 38.9 72.4 80.3

TEMP.

DRY BULB (°F)

TEMP.

DEW POINT (°F)

ENTHALPY

(BTU/LB/DA)

TEMP (°F) HUMIDITY %RH TEMP (°F) HUMIDITY %RH

POINT P1 POINT P2

Table 8 — HH57AC081 Sensor DIP Switch

USE

DA OFF ON OFF
RA ON OFF OFF
OA OFF OFF OFF

LEGEND

DA — Discharge Air or Supply Sensor
RA — Return Air
OA — Outside Air

DIP SWITCH POSITIONS FOR SWITCHES 1,2, & 3

123

Fig. 32 — HH57AC081 Sensor, Dimensions and DIP

Switch Location

14

Installing Differential Return Air Sensor

12-PIN FEMALE

PLUG FROM ECONOMIZER

BLU

BLK

GRA GRA GRA

GRA GRA

GRA

GRA

PNK

VIO

6

7

2

3

10

11

5

1

12

9

4

8

RED

ORG

PL6

PLUG

12-PIN MALE

PLUG IN UNIT

BRN

YEL

*HH57AC081

DIFFERENTIAL RETURN

SENSOR. FIELD MOUNTED

IN RETURN DUCT

WIRING

HARNESS*

*PROVIDED IN

CRDIFRASN01A00 Kit

The CRDIFRASN01A00 differential return air sensor kit must
be field mounted in the system’s return duct work. The kit in­cludes a wiring harness that connects the EconoMi$er X har­ness in the return chamber of the unit to the provided
HH57AC081 sensor. Wire per Fig. 33.

In addition to using the HH57AC081 (Honeywell C7400S) sen­sor (see Fig. 32) for a single enthalpy sensor, it can also be used
as a differential return enthalpy or dry bulb sensor. Figure 31
shows the dual enthalpy boundaries in the W7220 Jade control­ler. With dual enthalpy, the HIGH LIMIT boundary is ES1 when
there are no stages of mechanical cooling energized and HL
(high limit) when a compressor stage is energized. Table 7
shows the High Limit Curves for each setting.

NOTE: To use the HH57AC081 sensor for differential return air,
the dipswitches on the sensor must be set to ON-OFF-OFF. See
Table 8.

When using the CRDIFRASN01A00 differential return enthal­py or dry bulb temperature option, see Table 9 for California
Title 24 setting requirements by region.

Fig. 33 — Wiring Differential Return Air Sensor

California’s Title 24 High Temperature Limit Settings

California’s Title 24 code requires a high temperature limit set­ting for all dry bulb outside air economizer change over. The
temperatures vary by region within California. See Table 9 for
high limit settings.

Table 9 — California Title 24 Regional High Limit Dry

Bulb Temperature Settings

TABLE 140.4-B AIR ECONOMIZER HIGH LIMIT SHUT OFF

DEVICE TYPE*

Fixed Dry Bulb

Differential Dry Bulb

Fixed Enthalpy†

+ Fixed Dry Bulb

* Only the high limit control devices listed are allowed to be used and

at the set points listed. Others such as Dew Point, Fixed Enthalpy,
Electronic Enthalpy, and Differential Enthalpy Controls, may not be
used in any climate zone for compliance with Section 140.4(e)1
unless approval for use is provided by the Energy Commission
Executive Director.

† At altitudes substantially different than sea level, the Fixed

Enthalpy limit value shall be set to the enthalpy value at 75°F and
50% relative humidity. As an example, at approximately 6,000 foot
elevation, the fixed enthalpy limit is approximately 30.7 Btu/lb.

CONTROL REQUIREMENTS

REQUIRED HIGH LIMIT

CLIMATE

ZONES

1, 3, 5, 11-16 OAT exceeds 75°F

2, 4, 10 OAT exceeds 73°F

6, 8, 9 OAT exceeds 71°F

7 OAT exceeds 69°F

1, 3, 5, 11-16

2, 4, 10

6, 8, 9

7

OAT exceeds 28 Btu/lb of dry air

All

(ECONOMIZER

OFF WHEN):

DESCRIPTION

OAT exceeds

RA temperature

OAT exceeds return air

temperature minus 2°F

OAT exceeds return air

temperature minus 4°F

OAT exceeds return air

temperature minus 6°F

OAT exceeds 75°F

or

Demand Controlled Ventilation (DCV)

Refer to EconoMi$er X wiring diagram (Fig. 25 and 30) and
DCV instructions if demand controlled ventilation (CO
sor) is used. CO2 sensor will wire into the blue and black con­nections at the Jade controller as shown in Fig. 25, 30, and 34.
If a field-installed CO

sensor is connected to the

2

EconoMi$er X controller, a demand controlled ventilation
strategy will operate automatically. As the CO

level in the

2

space increases above the set point (on the EconoMi$er X con­troller), the minimum position of the dampers will be increased
proportionally, until the Maximum Ventilation setting is
reached. As the space CO

level decreases because of the in-

2

crease in fresh air, the outdoor damper will follow the higher
demand condition from the DCV mode or from the free cool­ing mode.

BLACK WIRE

IAQ 2-10 VDC

BLUE WIRE

IAQ COM

Fig. 34 — CO

Wiring Connections to Jade Controller

2

sen-

2

†

15

Remote (Downstairs) Monitoring of Controller’s

CR

AUX2-1

OCC

E-GND

EXH1

AUX1-0

Y2-I

Y2-O

Y1-I

Y1-O

C

R

W7220 JADE

ECONOMIZER

U1

U1

R

Rc

C

A-L/A

FURNACE, AIR HANDLER,

OR RTU

TH8321R OR

TH8321WF
SUB-BASE

Fault Detection and Diagnostics

Many codes including IECC, Title 24, and ASHRAE 90.1 re­quire that the economizer’s faults be accessible by operating or
service personal, or annunciated locally on zone thermostat. To
setup remote monitoring on the controller, under SYSTEM
SETUP, AUX1-OUT must be set to SYS.

The latest versions of Honeywell’s TH8321WF or TH8321R
thermostats are options for meeting this requirement. Figure 35
shows an example of the thermostat wiring to the Jade control­ler. Follow instructions provided with Honeywell thermostat.

Another option that is acceptable to some codes is an annunci­ator light visible by service personnel. See Fig. 36 for typical
wiring to the Jade controller. Refer to codes for proper labeling
of light.

W7220 Economizer Controller Module

Fig. 35 — Thermostat Wired for Remote FDD

MAT
MAT
OAT
OAT

IAQ (2-10V)

IAQ COM

IAQ 24V

ACT (2-10V)

ACT COM

ACT 24V

JADE Setting: Under the “System Setup” menu, set AUX1-OUT to
“SYS” which will close JADE relay on fault detection

AUC2-1

OCC

E-GND
EXH1
AUX1-0

Y21

Y2O

Y1I

Y1O

=CR

TO “AUX1-0” TERMINAL

TO “C” TERMINAL

Annunciator Light*

Examples of annunciator lights
would include these Grainger lights:

- Item #20C841

- Item #20C846

Fig. 36 — Annunciator Light Wired for Remote FDD

16

GENERAL JADE W7220 CONTROLLER AND

SENSOR INFORMATION

W7220 Economizer

The economizer controller used on electromechanical units is a
Honeywell W7220, which is located in the RTU base unit’s
Control Box. See the base unit’s Installation Instructions for
the location of the Control Box access panel.

The W7220 controller provides the following:

• 2-line LCD interface screen for setup, configuration, and
troubleshooting.

• On-board fault detection and diagnostics

• Sensor failure loss of communications identification

• Automatic sensor detection

• Capabilities for use with multiple-speed indoor fan systems

User Interface

The user interface consists of a LCD display and a 4-button key­pad on the front of the economizer controller.

Keypad

The four navigation buttons (see Fig. 37) are used to scroll
through the menus and menu items, to select menu items, and
to change parameter and configuration settings.

6. Press the ▼ button to decrease the displayed parameter
value.

NOTE: When values are displayed, pressing and holding the ▲or
▼ button causes the display to automatically increment.

7. Press the (Enter) button to accept the displayed value
and store it in nonvolatile RAM.

8. The message “CHANGE STORED” displays.

9. Press the (Enter) button to return to the current menu
parameter.

10. Press the (Menu Up/Exit) button to return to the previ­ous menu.

Menu Structure

Table 11 illustrates the complete hierarchy of menus and pa­rameters for the EconoMi$er X system.

The Menus in display order are:

•STATUS

•SETPOINTS

• SYSTEM SETUP

• ADVANCED SETUP

• CHECKOUT

•ALARMS

IMPORTANT: The default setting on the W7220 controller
is for a “Fan Type” with 2 speed, which is correct for 2 or 3
speed units (48/50LC 07-12). For a 1 (single) speed unit, the
setting under SYSTEM SETUP > FAN TYPE must be
changed to 1 speed.

Fig. 37 — W7220 Controller

Using the Keypad with Menus

To use the keypad when working with menus:

•Press the ▲ (Up arrow) button to move to the previous
menu.

•Press the ▼ (Down arrow) button to move to the next
menu.

• Press the (Enter) button to display the first item in the
currently displayed menu.

• Press the (Menu Up/Exit) button to exit a menu’s item
and return to the list of menus.

Using the Keypad with Settings and Parameters

To use the keypad when working with set points, system and
advanced settings, checkout tests, and alarms:

1. Navigate to the desired menu.

2. Press the (Enter) button to display the first item in the
currently displayed menu.

3. Use the ▲ and ▼ buttons to scroll to the desired parameter.

4. Press the (Enter) button to display the value of the
currently displayed item.

5. Press the ▲ button to increase the displayed parameter
value.

IMPORTANT: Table 11 illustrates the complete hierarchy.
Menu parameters may be different depending on configura­tion. For example, none of the DCV parameters appear for a
system that does not have a DCV (CO

) sensor.

2

Programming the Jade W2770 Controller

The next several pages detail the different status displays, set
points, setup, and alarms available on the controller. The list
below and Table 10 summarize the inputs required for a stan­dard application with a single outside air sensor.

NOTE: Instead of setting the SETPOINTS, you can use the de­faults already set in the Jade controller – see default settings be­low. See Table 10 for summarized standard settings or, for more
detail, see Table 11 – Menu Structure.

SETPOINTS

• MAT SET: this sets the mixed air temperature (MAT) set­ting. The controller has a default of 53°F, but the range is
anywhere from 38°F to 70°F.

• LOW T LOCK: This setting locks out the compressor (or
mechanical cooling) at a given temperature. The default is
32°F, but the controller’s range is from –45°F to 80°F.

• DRYBULB SET: if you have an economizer with a dry
bulb outside air sensor, you will see and set the DRY­BULB SET. The default setting is 63°F but the controller’s
range is 48°F to 80°F.

• ENTH CURVE: if you have a single enthalpy outside air
sensor instead of a dry bulb, you will see and set the ENTH
CURVE setting. There are 5 setting options: ES1 thru ES5.
Check Table 7 for the limits for each of these settings. ES3
is the default setting.

• MIN POS: The minimum position allows for ventilation
even when not in the free-cooling mode. If you have a sin­gle speed unit there will be only one minimum position

17

setting. The default is 4.4 volts, but the range is 2 to
10 vdc.

• MIN POS H and MIN POS L: If your unit is 2 speed, there
will be 2 minimum position settings that show up on the
menu. The first is MIN POS H (for high speed), which has
a default of 4.4-v. The second is MIN POS L (for low
speed), which has a default of 6.0-v. Note that MIN POS H
and MIN POS L are only displayed if under SYSTEM
SETUP, AUX2 IN is set to “W1”, and FAN TYPE is set to
2 speed.

Table 10 — Standard Jade W7220 Controller Configuration

SYSTEM SETUP

• INSTALL: Allows you to set the current date. Use the key­pad buttons to scroll to the correct date.

• EQUIPMENT: Always set to CONV even if the unit is a
heat pump.

• AUX2 IN: Always set to W.

• FAN TYPE: Set for either single speed or 2 speed. The de­fault setting is 2 speed.

• AUX OUT: If remote Fault Detection and Diagnostic
(FDD) monitoring is required, select SYS.

• OCC: occupancy, always set to INPUT

CONTROLLER

MENU ITEM

MAT SET 53°F 38°F to 70°F 53°F 38°F to 70°F

LOW T LOCK 32°F –45°F to 80°F 32°F –45°F to 80°F
DRYBLB SET 63°F 48°F to 80°F 63°F 48°F to 80°F Only displayed if using single DB OA sensor
ENTH CURVE ES3 ES1 to ES5 ES3 ES1 to ES5 Only displayed if using a single enthalpy OA sensor

MIN POS 4.4 vdc 2 to 10 vdc n/a n/a Only displayed if set up for single speed unit

SET POINTS

MIN POS H n/a n/a 4.4 vdc 2 to 10 vdc Only displayed if set up for 2 speed unit
MIN POS L n/a n/a 6.0 vdc 2 to 10 vdc Only displayed if set up for 2 speed unit

INSTALL 1/1/2010 Current date 1/1/2010 Current date

EQUIPMENT CONV CONV CONV CONV Always set to CONV, even on HP units

AUX2 IN W W W W Always set to W
FAN TYPE 2 speed 1 speed 2 speed 2 speed See Note 3
AUX1 OUT NONE SYS NONE SYS Set to SYS for remote FDD monitoring

OCC INPUT INPUT INPUT INPUT Always set to INPUT

SYSTEM SETUP

n/a — Not applicable

NOTES:

1. For 2 speed unit, under SYSTEM SETUP: EQUIPMENT= CONV,
AUX2 I = W, and FAN TYPE = 2 SPEED

2. More sophisticated controller setups, including for DCV or power
exhaust, are available by referring to Table 11 options

3. Fan speed options are:

1) 1 Speed

2) 2 Speed

3) 2 Speed: 1 Heat, 1 Cool.

4) 3 Speed: 1 Heat, 2 Cool.

4. Do not use 3 speed setting for LC units.

FOR SINGLE SPEED UNIT FOR 2 SPEED UNIT

Default Set to: Default Set To:

NOTE

18

Table 11 — Menu Structure

1

MENU PARAMETER

ECON AVAIL NO YES/NO

ECONOMIZING NO YES/NO

OCCUPIED NO YES/NO

HEAT PUMP n/a

COOL Y1-IN OFF ON/OFF

COOL Y1-OUT OFF ON/OFF

COOL Y2-IN OFF ON/OFF

COOL Y2-OUT OFF ON/OFF

MA TEMP _ _ . _°F (or °C)

DA TEMP _ _ . _°F (or °C)

STATUS

OA TEMP _ _ . _°F (or °C)

OA HUM _ _% 0 to 100%

RA TEMP _ _ . _°F (or °C)

RA HUM _ _% 0 to 100%

IN CO2 _ _ _ppm 0 to 2000 ppm

DCV STATUS n/a ON/OFF

DAMPER OUT 2.0V 2.0 to 10.0-v

ACT POS _ _% 0 to 100%

ACT COUNT n/a 1 to 65535

ACTUATOR n/a

EXH1 OUT OFF ON/OFF

EXH2 OUT OFF ON/OFF

PARAMETER

DEFAULT

VALUE

PARAMETER

RANGE AND

INCREMENT

COOL
HEAT

0°F to 140°F
(–18°C to 60 °C)

0°F to 140°F
(–18°C to 60 °C)

–40°F to 140°F
(–40°C to 60°C)

0°F to 140°F
(–18°C to 60°C)

OK/Alarm
(on Alarm menu)

2

ECONOMIZING AVAILABLE
YES = economizing available; the system can use outside air for free cooling

NOTES

when required
ECONOMIZING ACTIVE

YES = Outside air being used for 1st stage cooling
NO = Economizing not active

OCCUPIED
YES = OCC signal received from space thermostat or unitary controller
YES = 24 vac on terminal OCC.
NO = 0 vac on terminal OCC.

HEAT PUMP MODE
(Not available on 2-speed configuration)

FIRST STAGE COOLING DEMAND (Y1-IN)
Y1-I signal from space thermostat or unitary controller for cooling stage 1.
ON = 24 vac on terminal Y1-I
OFF = 0 vac on terminal Y1-I

FIRST STAGE COOLING RELAY OUTPUT
ON = 24 vac on terminal Y1-O; Stage 1 mechanical cooling called on
OFF = 0 vac on terminal Y1-O; no mechanical cooling

SECOND STAGE COOLING DEMAND (Y2-IN)
Y2-I signal from space thermostat our unitary controller for second stage
cooling.
ON = 24 vac on terminal Y2-I
OFF = 0 vac on terminal Y2-I

SECOND STAGE COOLING RELAY OUTPUT
ON = 24 vac on terminal Y2-O; stage 2 mechanical cooling called on
OFF = 0 vac on terminal Y2-O; no stage 2 mechanical cooling

MIXED AIR TEMPERATURE, Cooling Mode
Displays value of measured mixed air from MAT sensor. Displays _ _ . _ if
not connected, short or out-of-range.

DISCHARGE AIR TEMPERATURE, after Heating section
(Accessory sensor required)
Displays when Discharge Air sensor is connected and displays measured
discharge temperature. Displays _ _ . _ if sensor sends invalid value, if not
connected, short or out-of-range.

OUTSIDE AIR TEMPERATURE
Displays measured value of outdoor-air temperature. Displays _ _ . _ if
sensor sends invalid value, short or out-of-range.

OUTSIDE AIR RELATIVE HUMIDITY
Displays measured value of outdoor humidity from OA sensor. Displays __%
if not connected, short, or out-of-range.

RETURN AIR TEMPERATURE
Displays measured value of return air temperature from RAT sensor.
Displays _ _ . _ if sensor sends invalid value, if not connected, short or out­of-range

RETURN AIR RELATIVE HUMIDITY
Displays measured value of return air humidity from RA sensor. Displays
__% if sensor sends invalid value, if not connected, short or out-of-range

SPACE/RETURN AIR CO
(CO2 sensor required, accessory or factory option)
Displays value of measured CO
short or out-of-range

DEMAND CONTROLLED VENTILATION STATUS
(CO

sensor required, accessory or factory option)

2

Displays ON if above set point and OFF if below set point, and ONLY if a
CO

sensor is connected.

2

Displays voltage output to the damper actuator.
0% = OA Damper fully closed

2

from CO2 sensor. Invalid if not connected,

2

100%= OA Damper full open
Displays actual position of outdoor air damper actuator

2.0-v = OA Damper fully-closed

10.0-v = OA Damper full open
Displays number of times actuator has cycled.

1 cycle equals accrued 180° of actuator movement in any direction

Displays Error if voltage or torque is below actuator range

EXHAUST STAGE 1 RELAY OUTPUT
Output of EXH1 terminal:
ON = relay closed
OFF = relay open

EXHAUST STAGE 2 RELAY OUTPUT
Output of AUX terminal; displays only if AUX = EXH2
ON = relay closed
OFF = relay open

19

Table 11 — Menu Structure1 (cont)

MENU PARAMETER

3

ERV

STATUS

(cont)

MECH COOL ON 0 0,1, or 2 Displays stage of mechanical cooling that is active.

FAN SPEED n/a LOW or HIGH

W (HEAT ON) n/a ON/OFF

MAT SET 53°F (12°C)

LOW T LOCK 32°F (0°C)

DRYBLB SET 63°F (17°C)

DRYBLB DIFF 0°F

ENTH CURVE ES3

DCV SET 1100ppm

MIN POS 4.4 V 2 to 10 vdc

MIN POS L 6.0V 2 to 10 vdc

SETPOINTS

MIN POS M 5.4V 2 to 10 vdc

MIN POS M 4.4V 2 to 10 vdc

VENTMAX L 6.0 V 2 to 10 vdc

VENTMAX M 5.4 V 2 to 10 vdc

VENTMAX H 4.4 V 2 to 10 vdc

VENTMIN L 3.7 V 2 to 10 vdc

VENTMIN M 3.4 V 2 to 10 vdc

VENTMIN H 2.8 V 2 to 10 vdc

PARAMETER

DEFAULT

VALUE

PARAMETER

RANGE AND

INCREMENT

OFF ON/OFF

38°F to 65°F
(3°C to 18°C);
increment by 1°

–45°F to 80°F
(–43°C to 27°C);
increment by 1°

48°F to 80°F
(9°C to 27°C);
increment by 1°

0°F to 6°F;
increment by 2°F

ES1,ES2,ES3,ES
4, or ES5

500 to 2000ppm;
increment by 100

2

ENERGY RECOVERY UNIT RELAY OUTPUT
Output of AUX terminal; displays only if AUX = ERV
ON = relay closed

NOTES

OFF = relay open

SUPPLY FAN SPEED
Displays speed setting of fan on a 2‒speed fan unit.

HEAT DEMAND STATUS
Displays status of heat demand on a 2‒speed fan unit.

MIXED AIR SET POINT
Set point determines where the economizer will modulate the OA damper to
maintain the mixed air temperature.

COMPRESSOR LOW TEMPERATURE LOCKOUT
Set point determines outdoor temperature when the mechanical cooling
cannot be turned on. Commonly referred to as the compressor lockout.

OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor air
temperature is good for free cooling; e.g.: at 63°F (17°C), unit will economize
at 62°F (16.7°C) and below and not economize at 64°F (17.8°C) and above.
There is a 2°F (1.1°C) deadband.
DRYBULB SET is only displayed if the economizer has a single dry bulb
sensor

Dry bulb Differential will only show if using dual dry bulb - i.e. when an
outdoor air temperature sensor C7250 is attached to OAT terminals and
C7400S sensor is wired to S-Bus and configured for RAT (return air).
Free cooling will be assumed whenever OA temp is at or below RAT minus
this dry bulb setting.

ENTHALPY CHANGEOVER CURVE
(Requires enthalpy sensor option)
Enthalpy boundary “curves” for economizing using single enthalpy

DEMAND CONTROLLED VENTILATION SET POINT
Displays only if CO
Ventilation of space. Above the set point, the OA dampers will modulate
open to bring in additional OA to maintain a space ppm level below the set
point.

VENTILATION MINIMUM POSITION.
Only displayed if controller is set for single speed unit under FAN TYPE, and
if DCV is NOT used.

VENTILATION MINIMUM POSITION AT LOW SPEED.
Only displays if unit is set for 2 or 3 speed and CO
speed with 1 heat and 1 cool then set for HEATING ventilation. If using 3
speed with 1 heat and 2 cool then set for LOW SPEED COOLING
ventilation.

sensor is connected. Set point for Demand Control

2

is not used. IF using 2

2

VENTILATION MINIMUM POSITION AT MEDIUM SPEED.
Only displays if unit is set for 3 speed with 1 heat and 2 cool, and CO
used. Set for HEATING ventilation.

VENTILATION MINIMUM POSITION AT HIGH SPEED.
Only displays if unit is set for 2 or 3 speed and CO
speed with 1 heat and 1 cool then set for COOLING ventilation. If using 3
speed with 1 heat and 2 cool then set for HIGH SPEED COOLING ventilation

DCV MAXIMUM DAMPER POSITION AT LOW SPEED
Displays only if a CO
cfm) set point. Displays 2 to 10 V if <3 sensors (RA,OA, and MA). In AUTO

sensor is connected. Used for Vbz (ventilation max

2

is not used. IF using 2

2

mode dampers controlled by CFM
DCV MAXIMUM DAMPER POSITION AT MEDIUM SPEED.

Only displays if unit is set for 3 speed with 1 heat and 2 cool. Set for
HEATING ventilation.

DCV MAXIMUM DAMPER POSITION AT HIGH SPEED.
Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF
using 2 speed with 1 heat and 1 cool then set for COOLING ventilation. If
using 3 speed with 1 heat and 2 cool then set for HIGH SPEED COOLING
ventilation

DCV MINIMUM DAMPER POSITION AT LOW SPEED.
Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF
using 2 speed with 1 heat and 1 cool then set for HEATING ventilation. If
using 3 speed with 1 heat and 2 cool then set for LOW SPEED COOLING

DCV MINIMUM DAMPER POSITION AT MEDIUM SPEED.
Only displays if unit is set for 3 speed with 1 heat and 2 cool. Set for
HEATING ventilation.

DCV MINIMUM DAMPER POSITION AT HIGH SPEED.
Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF
using 2 speed with 1 heat and 1 cool then set for COOLING ventilation. If
using 3 speed with 1 heat and 2 cool then set for HIGH SPEED COOLING
ventilation

is not

2

20

Table 11 — Menu Structure1 (cont)

MENU PARAMETER

ERV OAT SP 32°F (0°C)

EXH1 SET 50% 0 to 100%

EXH1 L SET 65% 0 to 100%

EXH1 M SET 60% 0 to 100%

SETPOINTS

(cont)

EXH2 H SET 50% 0 to 100%

EXH2 L SET 80% 0 to 100%

EXH2 M SET 77% 0 to 100%

EXH2 H SET 75% 0 to 100%

INSTALL 01/01/10

UNITS DEG °F °F or °C Sets economizer controller in degrees Fahrenheit or Celsius

EQUIPMENT CONV

AUX2 I W

SYSTEM

SETUP

FAN TYPE 2 speed 1 speed/2 speed

* These Fan Type (speed) settings are for future use only. Do not use for 3 speed LC units.

FAN CFM 5000cfm

AUX OUT NONE

OCC INPUT

MA LO SET 45°F (7°C)

FREEZE POS CLO CLO or MIN

CO2 ZERO 0ppm

CO2 SPAN 2000ppm

ADVANCED

SETUP

STG3 DLY 2.0h

SD DMPR POS CLO CLO or OPN

DCVCAL ENA MAN

PARAMETER

DEFAULT

VALUE

PARAMETER

RANGE AND

INCREMENT

0°F to 50°F
(–18°C to 10°C);
increment by 1°

2

Conventional or
HP

W required for
2-speed mode

100 to 15000 cfm;
increment by 100

NONE
ERV
EXH2
SYS

INPUT or
ALWAYS

35°F to 55°F
(2°C to 12°C);
incremented by 1°

0 to 500 ppm;
Increment by 10

1000 to 3000 ppm;
Increment by 10

0 min, 5 min, 15
min, then 15 min
intervals. Up to 4 h
or OFF

MAN (manual)
AUTO

NOTES

ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only displayed when AUX1 O = ERV

Exhaust fan set point for single speed units. Based on OA Damper position
to activate power exhaust.

EXHAUST FAN 1 SETPOINT AT LOW SPEED
On 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OA
damper position to activate power exhaust.

EXHAUST POINT 1 SETPOINT AT MEDIUM SPEED
Only displays if unit is set for 3 speed with 1 heat and 2 cool. Based on
economizer OA damper position to activate power exhaust.

EXHAUST FAN 1 SETPOINT AT HIGH SPEED
On 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OA
damper position to activate power exhaust.

EXHAUST FAN 2 SETPOINT AT LOW SPEED
On 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OA
damper position to activate power exhaust.

EXHAUST FAN 2 SETPOINT AT MEDIUM SPEED
Only displays if unit is set for 3 speed with 1 heat and 2 cool. Based on
economizer OA damper position to activate power exhaust.

EXHAUST FAN 2 SETPOINT AT HIGH SPEED
On 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OA
damper position to activate power exhaust.

Display order = MM/DD/YY
Setting order = DD, MM, then YY.

Always set to CONV even for heat pump

Always set to W

Sets the economizer controller to the number of unit fan speeds.
Fan Type options:
1 Speed units
2 speed units
*2 speed units: 1 for heat and 1 for cool
*3 speed units: 1 for heat and 2 for cool

UNIT DESIGN AIRFLOW (CFM)
Enter ONLY if using DCVCAL ENA = AUTO

• NONE = not configured (output is not used)

• ERV = Energy Recovery Ventilation

• EXH2 = second damper position relay closure for second exhaust fan

• SYS = use output as an alarm signal

Always set to INPUT

MIXED AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and alarm if
temperature falls below setup value).

FREEZE PROTECTION DAMPER POSITION
Damper position when freeze protection is active
CLO = closed
MIN = MIN POS or VENTMIN

CO

ppm level to match CO2 sensor start level.

2

ppm span to match CO2 sensor.

CO

2

COOLING STAGE 3 DELAY
Delay after stage 2 for cool has been active. Turns on 2nd stage of cooling
when economizer is 1st stage and mechanical cooling is 2nd. Allows three
stages of cooling, 1 economizer and 2 mechanical.
OFF = no Stage 3 cooling

Function NOT AVAILABLE with 2-speed mode
Indicates shutdown signal from space thermostat or unitary controller. When
controller receives 24 vac input on the SD terminal in conventional mode, the
OA damper will open if programmed for OPN and OA damper will close if
programmed for CLO. All other controls, e.g., fans, etc. will shut off.

Turns on the DCV automatic control of the dampers. Resets ventilation
based on the RA, OA, and MA sensor conditions. Requires all 3 RA, OA, and
MA sensors.
For single speed units only.

21

Table 11 — Menu Structure1 (cont)

MENU PARAMETER

PARAMETER

DEFAULT

VALUE

MAT T CAL 0.0°F (or °C) ±2.5°F (±1.4°C)

OA T CAL 0.0°F (or °C) ±2.5°F (±1.4°C)

OA H CAL 0% RH ±10% RH

ADVANCED

SETUP (cont)

RA T CAL 2.0°F (or °C) ±2.5°F (±1.4°C)

RA H CAL 0% RH ±10% RH

DA T CAL 0.0°F (or °C) ±2.5°F (±1.4°C)

2SP FAN DELAY 5 minutes

DAMPER VMIN­HS

DAMPER VMAX­HS

n/a n/a Positions OA damper to VMIN High Speed position

n/a n/a Positions OA damper to VMAX High Speed position

DAMPER OPEN n/a n/a

CHECKOUT

DAMPER CLOSE n/a n/a Positions damper to the fully closed position
CONNECT

Y1-O
CONNECT

Y2-O

CONNECT
AUX1O

n/a n/a Closes the Y1-O relay (Y1-O)

n/a n/a Closes the Y2-O relay (Y2-O)

n/a n/a

Alarms display only when they are active. The menu title “ALARMS(_)” includes the number of active alarms in parenthesis
( ). When using SYLK bus sensors, “SYLK” will appear on the screen, and when using 20k OA temperature sensors, “SENS
T” will appear on the screen

MA T SENS ERR n/a n/a

CO2 SENS ERR n/a n/a

OA SENS T ERR n/a n/a

ALARMS(_)

OA SYLK SENS
ERR

n/a n/a

DA T SENS ERR n/a n/a DISCHARGE AIR TEMPERATURE SENSOR ERROR

SYS ALARM n/a n/a

ACT UNDER V n/a n/a

ACT OVER V n/a n/a

ACT STALLED n/a n/a

See Legend and Notes for Table 11 on page 23.

PARAMETER

RANGE AND

INCREMENT

2

0 to 20 minutes in
1 minute
increments

NOTES

MIXED AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration mixed air
temperature (MAT) sensor

OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration outside air
temperature (OAT) sensor

OUTSIDE AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of calibration outside air enthalpy
sensor

RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration return air
temperature (RA) sensor

RETURN AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of calibration return air enthalpy
sensor

DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration discharge air
temperature (DAT) sensor

TIME DELAY ON SECOND STAGE ECONOMIZING
While in the Economizing mode, this is the delay between thermostat Y2
call and Y1-O output to mechanical cooling stage, to allow high speed fan
operation to attempt to cool space first.

Position OA damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test. Make sure to
pause in the mode to allow exhaust contacts to energize due to the delay in
the system.

Energizes the AUX1O output. If Aux setting is:

• NONE—no action taken

• ERV—24 vac out. Turns on or signals an ERV that the conditions
are not good for economizing but are for ERV operation.

• SYS—24 vac out. Issues a system alarm

d

MIXED AIR TEMPERATURE SENSOR ERROR
Mixed air sensor has failed or become disconnected - check wiring then
replace sensor if the alarm continues.

SENSOR ERROR

CO

2

CO

sensor has failed, gone out of range or become disconnected - check

2

wiring, then replace sensor if the alarm continues.
OUTSIDE AIR TEMPERATURE SENSOR ERROR

Outdoor-air temperature sensor has failed or become disconnected - check
wiring (OAT sensor connected at input terminals OAT), then replace if the
alarm continues.

OUTSIDE AIR ENTHALPY SENSOR ERROR
OAT sensor connected on S-bus.

When AUX1-0 is set to SYS and there is any alarm (e.g., failed sensors,
etc.), the AUX1-0 terminal has 24 vac out.

ACTUATOR VOLTAGE LOW
Voltage received by Actuator is below expected range.

ACTUATOR VOLTAGE HIGH
Voltage received by Actuator is over expected range.

ACTUATOR STALLED
Actuator stopped before achieving commanded position.

22

Legend and Notes for Table 11.

NA

AUX2-

OCC

E-GND

EXH1

AUX1- O

Y2-

Y1-

Y2-O

Y1-O

C

R

50048848-002

Rev. A

NA

A2

OCC

EX

A1

Y2I

Y2O

Y1I

Y1O

C

R

Cert Product

California Title 24, Part 6

HJW10

www.energy.ca.gov

MAT

MAT

OAT

OAT

S-BUS

S-BUS

IAQ 2-10

IAQ COM

IAQ 24V

ACT 2-10

ACT COM

ACT 24V

MA
MA

OA
OA

SB
SB

SB
SB

SB
SB

V
C
R

V
C
R

NA

50040839-001

Rev. G

LEGEND

n/a — Not applicable
LCD — Liquid Crystal Display
MAT — Mixed Air Temperature
OAT — Outdoor Air Temperature
OCC — Occupied
RAT — Return Air Temperature
RTU — Rooftop Unit

NOTES:

1. Table 11 illustrates the complete hierarchy. Menu parameters may

be different depending on configuration. For example, none of the
DCV parameters appear for a system that does not have a DCV

) sensor.

(CO

2

2. When values are displayed, pressing and holding the

ton causes the display to automatically increment.

3. ERV Operation: When in Cooling mode AND the conditions are

NOT OK for economizing - the ERV terminal will be energized. In
the Heating mode the ERV terminal will be energized when the OA
is below the ERV OAT set point in the set point menu.

▲ or ▼ but-

Checkout Tests

Use the Checkout menu (see Table 11) to test the damper oper­ation and any configured outputs. Only items that are config­ured are shown in the Checkout menu.

NOTE: See User Interface for information about menu navigation
and use of the keypad.

To perform a Checkout test:

1. Scroll to the desired test in the Checkout menu using the
▲ and ▼ buttons.

2. Press the button to select the item.

3. RUN? appears.

4. Press the button to start the test.

5. The unit pauses and then displays IN PROGRESS.

6. When the test is complete, DONE appears.

7. When all desired parameters have been tested, press the

(Menu up) button to end the test.

Checkout test can be performed at any time during the opera­tion of the system as a test that the system is operable.

CAUTION

EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage to

equipment.
Be sure to allow enough time for compressor startup and

shutdown between checkout tests. Do not short-cycle the
compressors.

SETUP AND CONFIGURATION

W7220 Economizer Module Wiring

Use Fig. 38 and Tables 12 and 13 to locate the wiring terminals
for the economizer module.

NOTE: The four terminal blocks are removable. Slide out each
terminal block, wire it, and then slide it back into place.

Fig. 38 — W7220 Economizer Module Terminal

Table 12 — Economizer Module — Left Hand

LABEL TYPE DESCRIPTION

MAT
MAT

OAT
OAT

S-BUS
S-BUS

IAQ 2-10 2-10 vdc

IAQ COM COM Air Quality Sensor Common
IAQ 24V 24 vac Air Quality Sensor 24 vac Source
ACT 2-10 2-10 vdc Damper Actuator Output (2-10 vdc)
ACT COM COM Damper Actuator Output Common
ACT 24V 24 vac Damper Actuator 24 vac Source

Connection Labels

Terminal Blocks

Top Left Terminal Block

20k NTC
and COM

20k NTC
and COM

S-BUS
(Sylk Bus)

Bottom Left Terminal Block

Mixed Air Temperature Sensor
(Polarity insensitive connections)

Outdoor Air Temperature Sensor
(Polarity insensitive connection)

Enthalpy Control Sensor
(Polarity insensitive connection)

Air Quality Sensor Input
(e.g. CO

sensor)

2

23

Table 13 — Economizer Module — Right Hand

Terminal Blocks

LABEL TYPE DESCRIPTION

Top Right Terminal Block

n/a The first terminal is not used

Shut Down (SD) or Heat (W)

AUX2 I 24 vac IN

OCC 24 vac IN Occupied / Unoccupied Input
E - GND E-GND Earth Ground - System Required
EXH1 24 vac OUT Exhaust Fan 1 Output

AUX1 O 24 vac OUT

Y2-1 24 vac IN

Y2-O 24 vac OUT

Y1-I 24 vac IN

Y1-O 24 vac OUT

C COM 24 vac Common
R 24 vac 24 vac Power (Hot)

Conventional only
and
Heat Pump Changeover (O?B) in Heat
Pump mode.

Programmable:
Exhaust fan 2 output
or
ERV
or
System alarm output

Bottom Right Terminal Block

Y2 in - Cooling Stage 2 Input from space
thermostat

Y2 out - Cooling Stage 2 Output to stage 2
mechanical cooling

Y1 in - Cooling Stage 2 Input from space
thermostat

Y1 out - Cooling Stage 2 Output to stage 2
mechanical cooling

Time-out and Screen Saver

When no buttons have been pressed for 10 minutes, the LCD
displays a screen saver, which cycles through the Status items.
Each Status item displays in turn and cycles to the next item af­ter 5 seconds.

START-UP AND OPERATION

Cooling with EconoMi$er X

For Occupied mode operation of EconoMi$er X, there must be
a 24-v signal at terminals R and OCC (provided through PL6-3
from the unit’s IFC coil). Removing the signal at OCC places
the EconoMi$er X control in Unoccupied mode. See Table 14
for Damper Position Control.

Table 14 — Damper Position Control, 2-Speed Fan Motor, Economizer Cooling Not Available

During Occupied mode operation, indoor fan operation will be
accompanied by economizer dampers moving to Minimum Po­sition set point for ventilation. If indoor fan is off, dampers will
close. During Unoccupied mode operation, dampers will re­main closed unless a Cooling (by free cooling) or DCV de­mand is received.

When free cooling using outside air is not available, the unit
cooling sequence will be controlled directly by the space ther­mostat. Outside air damper position will be closed or Minimum
Position as determined by Occupancy mode and fan signal.

When free cooling is available as determined by the appropri­ate changeover command (dry bulb, outdoor enthalpy, differen­tial dry bulb, or differential enthalpy), a call for cooling (Y1
closes at the thermostat) will cause the economizer control to
modulate the dampers open and closed to maintain the unit
supply air temperature. Default supply air temperature is 53°F,
with a range of 38°F to 70°F. Compressor will not run.

Should 100% outside air not be capable of satisfying the space
temperature, space temperature will rise until Y2 is closed. The
economizer control will call for compressor operation. Damp­ers will modulate to maintain SAT set point concurrent with
Compressor 1 operation. The “Low T Lock” setting (default
32°F) will lock out compressor operation when outside air tem­perature is below set point.

When space temperature demand is satisfied (thermostat Y1
opens), the dampers will return to Minimum Damper position
if indoor fan is running or fully closed if fan is off.

If accessory power exhaust is installed, the power exhaust fan
motors will be energized by the economizer control as the
dampers open above the EXH1 SET set point and will be ener­gized as the dampers close below the EXH1 SET set point.

Damper movement from full closed to full open (or vice versa)
will take between 1

1

/2 and 21/2 minutes.

Heating with EconoMi$er X

During Occupied mode operation, indoor fan operation will be
accompanied by economizer dampers moving to Minimum Po­sition set point for ventilation. If indoor fan is off, dampers will
close. During Unoccupied mode operation, dampers will remain
closed unless a DCV demand is received.

When the room temperature calls for heat (W1 closes), the
heating controls are energized.

INPUT VOLTAGE

OCC 0 - V 24 - V 24 - V 24 - V 24 - V

Y1 0 - V 0 - V 24 - V 24 - V 0 - V
Y2 0 - V 0 - V 0 - V 24 - V 0 - V

W1 0 - V 0 - V 0 - V 0 - V 24 - V

SUPPLY FAN

MOTOR SPEED

DAMPER POSITION

NO CO

SENSOR CLOSED MIN POS-L MIN POS-L MIN POS-H MIN POS-H

2

SENSOR CLOSED

W/ CO

2

OFF LOW LOW HIGH HIGH

FROM

VENTMIN L

TO

VENTMAX L

FROM

VENTMIN L

TO

VENTMAX L

FROM

VENTMIN H

TO

VENTMAX H

24

FROM

VENTMIN H

TO

VENTMAX H

TROUBLESHOOTING

For a list of common operating issues and concerns, see
Table 15.

Power Loss (Outage or Brownout)

All set points and advanced settings are restored after any pow­er loss or interruption, as all settings are stored in the Econo­mizer controller’s non-volatile flash memory.

NOTE: If the power goes below 18 vac, the W7220 controller
module assumes a power loss and the 5 minute power up delay
will become functional when power returns above 18 vac.

Alarms

The economizer module provides alarm messages that display
on the 2-line LCD.

NOTE: Upon power up, the module waits several seconds before
checking for alarms. This allows time for all the configured devic­es (e.g., sensors, actuator) to become operational.

If one or more alarms are present and there has been no keypad
activity for at least 5 minutes, the Alarms menu displays and
cycles through the active alarms.

The Alarms menus can be navigated at any time. See Table 11
for the Alarms menu.

CLEARING ALARMS
Once the alarm has been identified and the cause has been re-

moved (e.g., replaced faulty sensor), the alarm can be cleared
from the display.

To clear an alarm, perform the following:

1. Navigate to the desired alarm.

2. Press the button.

3. ERASE? displays.

4. Press the button.

5. ALARM ERASED displays.

6. Press the (Menu up/Exit) button to complete the
action and return to the previous menu.

NOTE: If an alarm still exists after it has been cleared, it will re­display within 5 seconds.

Table 15 — Operating Issues and Concerns

ISSUE OR CONCERN POSSIBLE CAUSE AND REMEDY

My outdoor temperature reading on the STATUS menu is
not accurate

If my enthalpy sensor drifts in accuracy over time, can I
recalibrate it?

Can I go back to factory defaults and start over?

Will I be able to see the LCD screen when it is in the unit? The LCD screen has a backlight that is always illuminated.

What is a good set point for the Mixed Air Temperature
(MAT)?

I am using enthalpy sensors. Why did the control ask me to
input a dry bulb changeover temperature?

In checkout, the outdoor damper closes when I command it
to open.

How do I set my minimum position when using a CO
sensor?

What if my damper does not go completely closed in the
checkout operation?

How do I set the OCC?

Does the economizer save my program values if the unit
loses power?

If the unit is left in checkout, how long will the unit stay in
checkout mode without input?

2

Check the sensor wiring:

• Enthalpy sensors are to be wired to the S-Bus terminals.

• Temperature sensors are to be wired to the OAT and MAT terminals.
The sensor is not able to be re-calibrated in the field. However, there is a menu item

under the ADVANCED menu to input a limited offset in temperature and humidity for
each sensor that is connected to the economizer.

Under the SYSTEM SETUP menu, you can change the set points to the factory
defaults.

The Mixed Air Temperature is the temperature of air to supply to the space. In a
commercial building, this is between 50°F and 55°F (10°C and 13°C). Mixed air is the
combination of return air and outdoor air.

If the humidity sensor in the enthalpy sensors fails, the backup algorithm in the control is
to default to the temperature sensor in the enthalpy sensor.

Check the actuator linkage or rotation. In the CHECKOUT mode, the outdoor damper
should drive open or closed with the return air damper having the opposite effect.

The minimum position is set using the VENTMIN and VENTMAX setup in the
SETPOINTS menu. VENTMIN is the minimum ventilation required when using an
occupancy sensor and VENTMAX is the minimum ventilation when not using an
occupancy sensor for Demand Control Ventilation. The VENTMAX position is set the
same as with the potentiometer on the analog economizers and is the output voltage to
the damper actuator. The range is 2 vdc closed OA damper and 10 vdc open OA
damper.

Check the damper linkage or hub to make sure the damper is able to close completely.

There are two settings for the OCC setting: INPUT and ALWAYS. INPUT is from the
space thermostat, if it has an occupancy output. ALWAYS is the unit in the occupied
mode, if the economizer is powered (fan on).

Yes, once the changes are stored in the controller they will be stored until they are
changed by the operator.

The unit will remain in checkout for 10 minutes, then return to normal operation.

25

© Carrier Corporation 2018

Catalog No. 04-53480208-01 Printed in U.S.A. Form IIK-CRECOMZR77-03 Pg 28 11-18A 11-18 Replaces: NEW

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.