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31

Storage Temperature

–40°F to 150°F (–40°C to 65°C)

Shipping Temperature

–40°F to 150°F (–40°C to 65°C)

Relative Humidity

5% to 95% RH non-condensing
ECONOMIZER MODULE WIRING DETAILS 
Use Fig. 49 and Tables 5 and 6 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. 49 — W7220 Wiring Terminals

*Sylk is a trademark of Honeywell International Inc.

 

S-Bus Sensor Wiring

The labels on the sensors and controller are color coded for

ease of installation. Orange labeled sensors can only be wired

to orange terminals on the controller. Brown labeled sensors

can only be wired to S-bus (brown) terminals. Use Fig. 50 and

Table 7 to locate the wiring terminals for each S-Bus sensor.
Use Fig. 49 and Table 7 to locate the wiring terminals for each

enthalpy control sensor.

NA

AUX2- 

OCC

E-GND

EXH1

AUX1-O

Y2-

Y1-

Y2-O

Y1-O

C

R

5004

88

4

8

-002

Rev. A

NA

A2

OCC

EX

A1

Y2I

Y2O

Y1I

Y1O

C

R

MAT

MAT

OAT

OAT

S

-BU

S

S

-BU

S

IAQ 2-10

IAQCOM 

IAQ 24V

ACT 2-10

ACT COM

ACT 24V

MA
MA

OA
OA

S

B

S

B

S

B

S

B

S

B

S

B

V
C
R

V
C
R

NA

50040

83

9-001

Rev. G

HJW10

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Table 5 — Economizer Module - Left Hand Terminal 

Blocks

LABEL

TYPE

DESCRIPTION

Top Left Terminal Block

MAT

MAT

20k NTC 
and COM

Mixed Air Temperature Sensor (Polarity 
Insensitive Connection)

OAT

OAT

20k NTC 
and COM

Outdoor Air Temperature Sensor (Polarity 
Insensitive Connection)

S-BUS

S-BUS

S-BUS 
(Sylk* Bus)

Enthalpy Control Sensor 
(Polarity Insensitive Connection)

Bottom Left Terminal Block

IAQ 2-10

2-10 vdc

Air Quality Sensor Input (e.g. CO

2

 

sensor)

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

Table 6 — Economizer Module - Right Hand Terminal 

Blocks

LABEL

TYPE

DESCRIPTION

Top Right Terminal Blocks

AUX2 I

24 vac IN

The first terminal is not used.

OCC

24 vac IN

Shut Down (SD) or HEAT (W) 
Conventional only
and
Heat Pump Changeover (O-B) in Heat 
Pump mode.

E-GND

E-GND

Occupied/Unoccupied Input

EXH1

24 vac OUT

Exhaust Fan 1 Output

AUX1 O

24 vac OUT

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

Bottom Right Terminal Blocks

Y2-I

24 vac IN

Y2 in - Cooling Stage 2 Input from space 
thermostat

Y2-O

24 vac OUT

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

Y1-I

24 vac IN

Y1 in - Cooling Stage 2 Input from space 
thermostat

Y1-O

24 vac OUT

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

C

COM

24 vac Common

R

24 vac

24 vac Power (hot)

Содержание Preferred 549J 04

Страница 1: ...NG RETURN AIR SMOKE SENSOR INSTALLATION ADDITIONAL APPLICATION DATA RTU Open Control System 43 Controller Options 43 LOW AMBIENT Step 12 Adjust Factory Installed Options 43 SMOKE DETECTORS ECONOMI ER...

Страница 2: ...his warning could cause personal injury death and or equipment damage R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components...

Страница 3: ...Options Indoor Fan Options 0 Electric Drive X13 Motor 04 06 1 Standard Static Option Belt Drive 2 Medium Static Option Belt Drive 3 High Static Option Belt Drive Outdoor Air Options A None B Temp Eco...

Страница 4: ...4 Fig 2 549J 04 06 Units Built On and After 4 15 2019...

Страница 5: ...5 Fig 3 549J 04 06 Units Built Prior to 4 15 2019...

Страница 6: ...6 Fig 4 549J 04 06 Corner Weights and Clearances...

Страница 7: ...7 Fig 5 549J 04 06 Base Rail Details...

Страница 8: ...8 Fig 6 549J 04 06 Thru the Base Charts...

Страница 9: ...sate drain connection plug 3 Rig and place unit 4 Convert unit to side duct connection arrangement 5 Install field fabricated ductwork at unit duct openings 6 Install outdoor air hood 7 Install conden...

Страница 10: ...10 Fig 7 Roof Curb Details 549J 04 06 ROOFCURB ACCESSORY CRRFCURB001A02 CRRFCURB002A02 1 2 356 2 0 610 UNIT SIZE...

Страница 11: ...Fig 9 Re fer to rigging instructions on unit Before setting the unit onto the curb recheck gasketing on curb Position unit on roof curb so that the following clearances are maintained 1 4 in 6 4 mm cl...

Страница 12: ...ld be secured to the flanges In sulate and weatherproof all external ductwork joints and roof or building openings with counter flashing and mastic in accor dance with applicable codes Do not cover or...

Страница 13: ...To gain access to the hood remove the filter access panel See Fig 13 2 Locate the 2 screws holding the metal tray to the basepan and remove Locate and cut the 2 plastic tie wraps secur ing the assembl...

Страница 14: ...Step 10 Install External Condensate Trap and Line The unit has one 3 4 in condensate drain connection on the end of the condensate pan and an alternate connection on the bot tom See Fig 20 Unit airflo...

Страница 15: ...nection pressure lugs only Connect field power supply conductors to LINE side terminals when the switch enclosure cover is removed to attach the handle Fig 22 Disconnect Switch and Unit UNITS WITHOUT...

Страница 16: ...venience outlets is now required by UL standards This cover cannot be factory mounted due its depth it must be in stalled at unit installation For shipment the convenience outlet is covered with a bla...

Страница 17: ...enience outlets Fuse On Power Type The factory fuse is a Bussman Fusetron 1 T 15 non renew able screw in Edison base type plug fuse Duty Cycle The unit powered convenience outlet has a duty cycle limi...

Страница 18: ...cated on the bottom left side of the unit control box Use this hole for the control conduit UNITS WITHOUT THRU BASE CONNECTIONS ELEC TRICAL CONNECTIONS 1 Install power wiring conduit through side pane...

Страница 19: ...n Kit Pass the thermostat control wires through the hole provided in the corner post then feed the wires through the raceway built into the corner post to the control box Pull the wires over to the te...

Страница 20: ...t interval timing is reduced by a factor of 0 1 seconds minute based on the posi tions of DIP switches SW1 and SW2 i e 90 minutes will be reduced to 9 seconds 2 Jumper for 5 20 seconds Forced Defrost...

Страница 21: ...DIP Switch Settings Defrost Board ELECTRIC HEATERS 549J units may be equipped with field installed accessory elec tric heaters The heaters are modular in design with heater frames holding open coil re...

Страница 22: ...necessary Single Point Boxes without Fuses Refer to accessory heater and single point box installation in structions for details on tap connections Fig 39 Typical Single Point Installation Low Voltag...

Страница 23: ...23 Fig 41 Electro Mechanical Control Wiring 208 230v 460v...

Страница 24: ...24 Fig 42 Electro Mechanical Control Wiring 575v...

Страница 25: ...25 Fig 43 Electro Mechanical Power Wiring 208 230 1 60...

Страница 26: ...26 Fig 44 Electro Mechanical Power Wiring 208 230 3 60...

Страница 27: ...27 Fig 45 Electro Mechanical Power Wiring 460 3 60...

Страница 28: ...28 Fig 46 Electro Mechanical Power Wiring 575 3 60...

Страница 29: ...29 Fig 47 RTU Open System Control Wiring...

Страница 30: ...are available with bus sensors User Interface Provides status for normal operation setup parameters check out tests and alarm and error conditions with a 2 line 16 char acter LCD display and four butt...

Страница 31: ...odule Left Hand Terminal Blocks LABEL TYPE DESCRIPTION Top Left Terminal Block MAT MAT 20k NTC and COM Mixed Air Temperature Sensor Polarity Insensitive Connection OAT OAT 20k NTC and COM Outdoor Air...

Страница 32: ...menu items and to change parameter and configuration settings 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 t...

Страница 33: ...ers in the menus use the letters MA or MAT indicating a mixed air temperature sensor location before the cooling coil This unit application has the control sensor locat ed after the cooling coil in th...

Страница 34: ...r from MAT sensor Displays _ _ _ F if not connected short or out of range DA TEMP _ _ _ F or _ _ _ C 40 F to 150 F 40 C to 66 C DISCHARGE AIR TEMPERATURE after Heating section Displays when Discharge...

Страница 35: ...the set point the Y1 O and Y2 O will not be energized on the controller DRYBLB SET 63F 17C 48 F to 80 F 9 C to 27 C increment by 1 F OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT Dry bulb set point wil...

Страница 36: ...he capacity of the RTU The value is found on the nameplate label for the specific unit AUX1 OUT NONE NONE ERV EXH2 SYS Select OUTPUT for AUX1 O relay NONE not configured output is not used ERV Energy...

Страница 37: ...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 DAMPER CLOS...

Страница 38: ...N A N A ACTUATOR ERROR Actuator has failed or become disconnected check for stall over voltage under voltage and actuator count Replace actuator if damper is movable and supply voltage is between 21 6...

Страница 39: ...ENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 set No Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 24 v On 0 v Off VENTMIN Closed O...

Страница 40: ...ZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 set No Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 24 v On 0 v Off VENTMIN Closed On On High 24 v On 24 v On VENTMIN Closed Y...

Страница 41: ...irst line and economizer W7220 on the second line After a brief pause the revision of the software appears on the first line and the second line will be blank Power Loss Outage or Brownout All set poi...

Страница 42: ...r vertical return configurations only All compo nents necessary for operation are factory provided and mount ed The unit is factory configured for immediate smoke detec tor shutdown operation addition...

Страница 43: ...r IV wiring External occu pancy control is managed through a connection on the Controls Connections Board If external occupancy control is desired connect a time clock or remotely controlled switch cl...

Страница 44: ...includes a compressor ac cumulator reversing valve dual function outdoor coil with va por header check valve cooling liquid line with a filter drier and a check valve dual function indoor coil with a...

Страница 45: ...s B Acutrol DFT 1 Cooling Liquid Line A D Outdoor Coil Indoor Coil C Heating Mode Liquid Line Strainer Filter Drier LPS LOC Accurater all 3 4 and 5 ton units Accurater 3 and 4 ton units only Acutrol C...

Страница 46: ...ht to change at any time specifications and designs without notice and without obligations Replaces II549J 4 6 01 2019 Bryant Heating Cooling Systems Cat No 04 53549009 01 Edition Date 12 19 Printed i...

Страница 47: ...N _____ Check that indoor air filters are clean and in place Y N _____ Check that outdoor air inlet screens are in place Y N _____ Verify that unit is level Y N _____ Check fan wheels and propeller fo...

Страница 48: ...mperature _______________ F D Liquid line temperature at outlet or reheat coil _______________ F E Confirm correct rotation for compressor Y N _____ F Check for correct ramp up of outdoor fan motor as...

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