Bryant 551K 04N Series, Service And Maintenance Instructions

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SETPOINTS
(CONT)
ERV OAT SP †† 32°F 0 to 50°F
increment by 1
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only displayed when AUX1 O = ERV
EXH1 SET 50% 0 to 100% Exhaust fan set point for single speed units. Based on OA Damper
position to activate power exhaust.
EXH1 L SET 65% 0 to 100% 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.
EXH1 M SET 60% 0 to 100% 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.
EXH1 H SET 50% 0 to 100% 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.
EXH2 L SET 80% 0 to 100% 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.
EXH2 M SET 77% 0 to 100% 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.
EXH2 H SET 75% 0 to 100% 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.
SYSTEM
SETUP
INSTALL 01/01/17 N/A Display order = MM/DD/YY
Setting order = DD, MM, then YY.
UNITS DEG F F or C Sets economizer controller in degrees Fahrenheit or Celsius
EQUIPMENT CONV Conventional or
HP
CONV = conventional;
HP O/B = Enable Heat Pump mode. Use AUX2 I for Heat Pump input
from thermostat or controller.
See Menu Note 4.
AUX2 IN W SD/W or
HP(O)/HP(B)
In CONV mode:
SD + Enables configuration of shutdown (default);
W = Informs controller that system is in heating mode.
NOTE: If using 2-speed fan mode, you must program CONV mode for
W. Shutdown is not available in 2-speed fan mode. See Menu Note 4.
In HP O/B mode:
HP(O) = energize heat pump on Cool (default);
HP(B) = energize heat pump on heat.
FAN SPEED 2 speed 1 speed
2 speed
2SP H/C
3 speed
Sets the economizer controller operation based on 1 speed, 2 speed,
2 speed heat/cool (2SP H/C), or 3 speed supply fan.
NOTE: Multi-speed fan options also need Heat (W1) programmed in
AUX 2 In. See Menu Note 4.
FAN CFM 5000cfm 100 to 15000 cfm;
increment by 100
UNIT DESIGN AIRFLOW (CFM)
Enter only if using DCVAL ENA = AUTO
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 Recovery Ventilator ††
EXH2 = second damper position relay closure for second exhaust fan
SYS = use output as an alarm signal
OCC INPUT INPUT or
ALWAYS
OCCUPIED MODE BY EXTERNAL SIGNAL
When using a setback thermostat with occupancy out (24 vac), the 24
vac is input “INPUT” to the OCC terminal. If no occupancy output from
the thermostat then change program to “ALWAYS” OR add a jumper
from terminal R to OCC terminal.
FACTORY DEFAULT NO NO or YES Resets all set points to factory defaults when set to YES. LCD will
briefly flash YES and change to NO but all parameters will change to
the factory default values.
NOTE: RECHECK AUX2 IN and FANTYPE for required 2-speed
values.
ADVANCED
SETUP
MA LO SET 45°F 35 to 55°F;
Incremented by 10
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and alarm if
temperature falls below setup value).
FREEZE POS CLO CLO or MIN FREEZE PROTECTION DAMPER POSITION
Damper position when freeze protection is active (closed or MIN
POS).
CO2 ZERO 0ppm 0 to 500 ppm;
Increment by 10
CO
2
ppm level to match CO
2
sensor start level.
CO2 SPAN 2000ppm 1000 to 3000 ppm;
Increment by 10
CO
2
ppm span to match CO
2
sensor.
Table 12 — W7220 Menu Structure* (cont)
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT †
NOTES