46
STATUS (cont)
EXH2 OUT
OFF
ON/OFF
EXHAUST STAGE 2 RELAY OUTPUT
Output of AUX1 O terminal
Displays ON when damper position reaches programmed
percentage set point.
ON = 24 vac output
OFF = No output
Displays only if AUX1 O = EXH2
ERV
OFF
ON/OFF
ENERGY RECOVERY VENTILATOR
Output of AUX1 O terminal; displays only if AUX1 O = ERV
ON = 24 vac output
OFF = No Output
MECH COOL ON
or
HEAT STAGES ON
0
0, 1, or 2
Displays stage of mechanical cooling that is active.
Displays the stage of heat pump heating that is active.
FAN SPEED
N/A
LOW or HIGH
SUPPLY FAN SPEED
Displays speed setting of fan on a 2-speed fan unit.
W (HEAT IN)
N/A
ON/OFF
HEAT DEMAND STATUS
Displays status of heat demand on a 2-speed fan unit.
SETPOINTS
MAT SET
53°F (12°C)
38°F to 70°F
(3°C to 21°C);
increment by 1
degree
SUPPLY AIR SETPOINT
The economizer will modulate the OA damper to maintain the
mixed air temperature at the set point
LOW T LOCK
32°F (0°C)
-45°F to 80°F
(-43°C to 27°C);
increment by 1
degree
COMPRESSOR LOW TEMPERATURE LOCKOUT
Set point determines outdoor temperature when the mechanical
cooling cannot be turned on. Commonly referred to as the
Compressor lockout. At or below the set point, the Y1-O and Y2-
O will not be energized on the controller.
DRYBLB SET
63°F (17°C)
48°F to 80°F
(9°C to 27°C);
increment by
1 degree
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Dry bulb set point will only appear if using dry bulb changeover.
Set point determines where the economizer will assume outdoor
air temperature is good for free cooling; e.g.; at 63°F unit will
economize at 62°F and below and not economize at 64°F and
above. There is a 2°F deadband.
ENTH CURVE
ES3
ES1,ES2,ES3,ES4,
or ES5
ENTHALPY CHANGEOVER CURVE
ES curve will only appear if using enthalpy changeover.
Enthalpy boundary “curves” for economizing using single
enthalpy. See page 53 for description of enthalpy curves.
DCV SET
1100ppm
500 to 2000 ppm;
increment by 100
DEMAND CONTROLLED VENTILATION
Displays only if CO
2
sensor is connected. Set point for Demand
Controlled 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.
MIN POS
2.8 V
2 to 10 vdc
VENTILATION MINIMUM POSITION
Displays ONLY if a CO
2
sensor is NOT connected.
With 2-speed fan units, MIN POS L (low speed fan) and MIN
POS H (high speed fan) settings are required. Default for MIN
POS L is 3.2V and MIN POS H is 2.8V.
VENTMAX 2.8
V
2 to 10 vdc
DCV MAXIMUM DAMPER POSITION
Displays only if a CO
2
sensor is connected.
Used for Vbz (ventilation max cfm) set point. VENTMAX is the
same setting as MIN POS would be if unit did not have CO
2
sensor.
100 to 9990 cfm;
increment by 10
If OA, MA, RA, and CO
2
sensors are connected and DCV CAL
ENABLE is set to AUTO mode, the OA dampers are controlled
by CFM and displays from 100 to 9990 CFM.
2 to 10 vdc
With 2-speed fan units, VENTMAX L (low speed fan) and
VENTMAX H (high speed fan) settings are required. Default for
VENTMAX L is 3.2V and VENTMAX H is 2.8V
VENTMIN 2.25
V
2 to 10 vdc or 100
to 9990 cfm
increment by 10
DCV MINIMUM DAMPER POSITION
Displays only if a CO
2
sensor is connected. Used for Va
(ventilation min cfm) set point. This is the ventilation for less than
maximum occupancy of the space.
100 to 9990 cfm;
increment by 10
If OA, MA, RA, and CO
2
sensors are connected and DCV CAL
ENABLE is set to AUTO mode, the OA dampers are controlled
by CFM and displays from 100 to 9990 CFM.
2 to 10 vdc
With 2-speed fan units VENTMIN L (low speed fan) and
VENTMIN H (high speed fan) settings are required. Default for
VENTMIN L is 2.5V and VENTMIN H is 2.25V
ERV OAT SP
††
32°F (0°C)
0°F to 50°F
(-18°C to 10°C);
increment by
1 degree
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only when AUX1 O = ERV
Table 15 — W7220 Menu Structure* (cont)
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
EXPANDED PARAMETER NAME
Notes
Summary of Contents for WeatherMaster 50HC04
Page 32: ...32 Fig 63 RTU Open Overlay for Economizer Wiring ...
Page 33: ...33 Fig 64 VFD Overlay for W2770 Controller Wiring ...
Page 86: ...86 Fig C 50HC A07 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 91: ...91 Fig H 50HC D12 PAC Control Diagram 208 230 3 60 460 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 93: ...93 Fig J 50HC A04 A06 PAC Power Diagram 208 230 1 60 APPENDIX D WIRING DIAGRAMS ...
Page 95: ...95 Fig L 50HC A07 PAC Power Diagram 208 230 3 60 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 100: ...100 Fig Q 50HC D11 PAC Power Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 101: ...101 Fig R 50HC D11 PAC Power Diagram 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 103: ...103 Fig T 50HC D14 PAC Power Diagram 208 230 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 104: ...104 Fig U 50HC D14 PAC Power Diagram 460 3 60 575 3 60 APPENDIX D WIRING DIAGRAMS ...
Page 124: ...124 Fig AO PremierLink System A04 A06 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 125: ...125 Fig AP RTU Open System Control A04 A06 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 126: ...126 Fig AQ PremierLink System A07 D14 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 127: ...127 Fig AR RTU Open A07 D14 Wiring Diagram APPENDIX D WIRING DIAGRAMS ...