Carrier WeatherMaker 50FC handleiding
Handleiding
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Multi-Speed Fan Support
The Economizer Controller supports connection to 1 and 2-speed
fans. When the unit is equipped with a multi-speed fan, the damp-
er responds to multiple fan speeds via multiple minimum positions
(MIN POS) to keep minimum airflow. See Tables 8-10.
If DCV (demand controlled ventilation) is enabled, then each fan
speed corresponds to 2 damper position ventilation set points
(VENT MIN, VENT MAX), e.g., Pos L corresponds to
2VENTMIN L... 2VENTMAX L. See Table 11 for Different
Damper Position Setting with Different Configured Outputs with
DCV enabled.
If CO
2
sensor is connected but DCV is disabled, then each fan
speed corresponds to one minimum damper position ventilation
set point. See Table 12 for Different Damper Position Setting with
Different Configured Outputs with DCV disabled.
Table 6 — 1 and 2-Stage Cooling Stage I/O Logic
ECONOMIZER
CONDITION MET
Y1 Y2
COOLING
STAGE 1
COOLING
STAGE 2
NO On On On On
NO On Off On Off
NO Off Off Off Off
YES On On On On/Off
a
NOTE(S):
a. If OAT MAT set point (3MAT SET), then Relay 2 is always OFF to disable
Cooling Stage 2. Otherwise, if both stages of cooling (Y1 and Y2) are ON for
more than a set time (15 minutes by default), Y2 remains ON, and the OAT is
higher than MAT set point, then Relay 2 energizes to allow Y2 pass-through to
enable Cooling Stage 2.
YES On Off Off Off
YES Off Off Off Off
Table 7 — 2-Stage Cooling Stage I/O Logic
ECONOMIZER
CONDITION MET
Y1 Y2
COOLING
STAGE 1
COOLING
STAGE 2
NO On On On On
NO On On On On
NO On Off On Off
NO Off Off Off Off
YES On On On On
YES On On On On/Off
YES On Off Off Off
YES Off Off Off Off
IMPORTANT: The Economizer Controller can tolerate thermo-
stat wiring mismatch, e.g., Thermostat Y1 Economizer
Y2-IN, Thermostat Y2 Economizer Y1-IN. The handling
logic is Stage =Y1I + Y2I. For example, Y1O =1 if Stage > =1,
Y2O =1 if Stage > = 2.
Table 8 — Damper MIN POS for 2-Speed Fan
a
NOTE(S):
a. A multi-speed fan is not controlled by the economizer controller but an external
logic board.
Y1 Y2 W1 or O/B Spd L Spd H Pos L Pos H
X— —X—X—
XX ——X—X
—— X—X—X
LEGEND
Pos L — Damper MIN POS for Low-Speed Fan
Pos H — Damper MIN POS for High-Speed Fan
Spd L — Low Speed (Fan)
Spd H — High Speed (Fan)
Table 9 — Different Fan Speeds with Different
Configured Outputs
a
NOTE(S):
a. If a single-speed fan connects to the controller, then it opens directly on the call
of cooling/heating. The damper position is Pos H.
FAN TYPE 1-SPEED COOLING
b
b. Configured by Y1O or Y2O.
2-STAGE COOLING
b
1-SPEED
FAN
c
c. Configured by 6FAN.
• Spd H (regardless of
cooling demand,
OCC=Yes)
• Spd H (regardless of
cooling demand,
OCC=Yes)
2-SPEED
FAN
c
• Spd L
(0 or 1 cooling
demand)
• Spd H
(2 cooling demands)
• Spd L
(0 or 1 cooling demand)
• Spd H
(2 cooling demands)
LEGEND
Spd L — Low Speed (Fan)
Spd H — High Speed (Fan)
Table 10 — Different Damper Minimum Positions
with Different Configured Outputs
FAN TYPE 1-SPEED COOLING
a
NOTE(S):
a. Configured by Y1O or Y2O.
2-STAGE COOLING
b
1-SPEED
FAN
b
b. Configured by 6FAN.
• Pos H (regardless of
cooling demand,
OCC=Yes)
• Pos H (regardless of
cooling demand,
OCC=Yes)
2-SPEED
FAN
b
• Pos H (regardless of
cooling demand,
OCC=Yes)
• Pos L
(0 or 1 cooling demand)
•Pos H
(2 cooling demands)
LEGEND
Pos L — Damper MIN POS for Low-Speed Fan
Pos H — Damper MIN POS for High-Speed Fan
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Productinformatie
| Merk | Carrier |
| Model | WeatherMaker 50FC |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 8511 MB |
