C
onTrol
I
npuTs
and
o
uTpuTs
www.DaikinApplied.com
7
OM 1077-1 • MAVERICK I
(10) G - Thermostat fan input.
This is a 24 volt input that is
used to control the indoor fan when the DDC Controller is used
in conjunction with a thermostat.
(11) Y1 - Thermostat 1st stage compressor.
This is a 24
volt input that is used to control the first stage of mechanical
cooling when the DDC Controller is used in conjunction with a
thermostat.
(12) Y2 - Thermostat 2nd stage compressor.
This is a 24 volt
input that is used to control the second stage of mechanical
cooling when the DDC Controller is used in conjunction with a
thermostat.
(13) W1 - Thermostat heating demand.
This is a 24 volt input
that is used to control the first stage of heating (electric heat or
gas heat) when the DDC Controller is used in conjunction with
a thermostat.
(14) W2 - Thermostat heating demand.
This is a 24 volt
input that is used to control the second stage of heating
(electric heat or gas heat) when the DDC Controller is used in
conjunction with a thermostat.
(15 &17) HP1, HP2 - High Pressure Switch 1 & 2.
When the
HPC is opened, the compressor for that circuit is turned OFF.
The compressor will not be allowed to restart for a minimum of
3 minutes. If three consecutive open conditions occur during
an active call for operation, the compressor will be locked out,
a diagnostic will appear on the LCD display and communicated
to the network if applicable. Cycling the call for operation will
restart the compressor. On dual compressor units only the
affected compressor circuit is locked out.
(16 & 18) LP1, LP2 - Low Pressure Switch 1 & 2.
When the
LPC is opened, the compressor for that circuit is turned OFF.
The compressor will not be allowed to restart for a minimum of
3 minutes. The low pressure switch is ignored during defrost
and for the first 90 seconds of compressor run time. If three
consecutive open conditions occur during an active call for
operation, the compressor will be locked out, a diagnostic
will appear on the LCD display and communicated to the
Network if applicable. Cycling the call for operation will restart
the compressor. On dual compressor units only the affected
compressor circuit is locked out.
(19) Smoke Detector.
The sensor is only applicable on units
equipped with a smoke detector. The input will shutdown the
unit and requires a manual reset. The sensor is used to detect
smoke due to fire in the air condition or ventilation ducts.
(20) FP - Fan proving.
The unit mounted fan proving switch
monitors the pressure differential across the unit blower to
detect when the indoor fan is blowing air. A diagnostic signal is
sent to the LCD display if the pressure differential indicates that
the indoor blower is not operating. The control will also monitor
the system and if the blower is running and is not required a
fault will be sent to the DDC Controller.
(21) CFS - Clogged Filter Switch.
The unit mounted clogged
filter switch monitors the pressure differential across the
return air filters. It is mounted in the filter section and is
connected to the DDC Controller. A diagnostic signal is sent
to the LCD display if the pressure differential across the
filters is at least 0.5" w.c. The contacts will automatically open
when the pressure differential across the filters decreases to
approximately 0.4" w.c., the clogged filter output is operating,
and the clogged filter switch has been closed for at least 2
minutes. The system will continue to operate regardless of the
status of the filter switch.
(22) Occupied input (OC).
This is a 24 volt input that is used
to control the occupancy (occupied or unoccupied mode) when
the DDC Controller is used in conjunction with a zone sensor
and solid state time clock.
(23 & 24) L1, L2 - Comfort Alert.
The DDC Controller has two
inputs to monitor up to two compressor circuits using optional
Copeland Comfort Alerts. The inputs can provide the following
information: Locked rotor, Open Circuits, Missing Phase,
Reverse Phase, and Welded Contactor. NOTE: The Comfort
Alert sends the Open Circuit Alarm (code 5) only after the fault
has been sensed for a minimum of 4 hours.
(25) Configuration pins (P11).
The DDC Controller
features a 7 pin header (P11) on board for the connection
of a configuration key. This 7-position connector allows the
controller to determine the unit application mode without a
menu entry.
describes the connections necessary for
each one of the possible options. The configuration connector
provides a quick and safe way of replacing boards while
keeping the proper configuration of the unit.
Table 2:
Configuration Connector Parameters
P11 – Unit configuration
1
2
3
4
5
6
7
Cooling only (default for 3-25T)
Default
Single stage Cooling with 2 stages EH
x
x
Single stage G/E(cool) with 1 stage GH
x
x
Single stage G/E(cool) with 2 stages GH
x
x
2 stages cool with 2 stages EH
x
x
2 stages G/E(cool) with 2 stages GH
x
x
Selection is made through the display
x
x
x
x
