77
Economizer Control Board (ECB)
The ECB controls the economizer actuator. (See Fig. 46 and Table
24.) The control signal from the ECB uses either the MFT
(Multi-Function Technology) digital communication protocol or a
4 to 20 mA output signal as defined by the configuration
Configuration
→
ECON
→
E.CTL
. The ECB has inputs for
Indoor Air Quality (IAQ), Outdoor Air Quality (OAQ), enthalpy
and RH sensor. It also controls two power exhaust outputs.
By digitally communicating with the ECB, the economizer
actuator is able to provide the damper position and diagnostic
information to the
Comfort
Link
t
controller. The damper
position is displayed at
Outputs
→
ECON
→
EC.AP
. Diagnostic
information is displayed via Alert T414. More information about
these alarms is contained in the Alarms and Alerts section.
NOTE
:
The Economizer Control Board (ECB) has a
4-position DIP switch that is factory set to ‘0’ (ON, towards the
center of the board).
Do not change this setting.
C07027
Fig. 46 -- Economizer Control Board (ECB)
48/
50P
G
and
P
M
Summary of Contents for 48/50PG Series
Page 32: ...32 C07009 Fig 20 Air Baffle Dimensions 48 50PG03 16 48 50PG and PM...
Page 33: ...33 C08077 Fig 21 Air Baffle Dimensions 48 50PG20 28 and 48 50PM16 28 48 50PG and PM...
Page 58: ...58 C08549 Fig 28 48PG03 16 Control Wiring Schematic 48 50PG and PM...
Page 59: ...59 C08550 Fig 29 50PG03 16 Control Wiring Schematic 48 50PG and PM...
Page 64: ...64 C08471 Fig 34 Typical 48PG and PM16 28 Control Schematic 48PM16 28 Shown 48 50PG and PM...
Page 66: ...66 C08557 Fig 36 Typical 50PG and PM16 28 Control Schematic 50PG20 28 Shown 48 50PG and PM...
Page 68: ...68 C08558 Fig 38 Typical 48 50PG and PM16 28 Power Schematic 48 50PM16 28 Shown 48 50PG and PM...
Page 72: ...72 C08565 Fig 42 Typical 48 50PG20 28 Component Arrangement 48 50PG20 24 Shown 48 50PG and PM...
Page 73: ...73 C08067 Fig 43 48 50PM16 28 Component Arrangement 48 50PG and PM...
Page 74: ...74 C08562 Fig 44 48 50PM16 28 with Humidi MiZert Component Arrangement 48 50PG and PM...
Page 208: ...208 48 50PG and PM...
