Daikin Maverick I Installation And Maintenance Manual page 62

an invalid number, the control will default back to the
occupied set point selection.
(10) G - Thermostat fan input.
used to control the indoor fan when the DDC Controller is
used in conjunction with a thermostat.
(11) Y1 - Thermostat 1st stage compressor.
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.
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.
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.
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.
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.
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.
Table 2: Configuration Connector Parameters
P11 – Unit configuration
Cooling only (default for 3-25T) – default
Single stage Cooling with 2 stages EH
Single stage G/E(cool) with 1 stage GH
Single stage G/E(cool) with 2 stages GH
2 stages cool with 2 stages EH
2 stages G/E(cool) with 2 stages GH
Selection is made through the display
McQuay OM 1077
This is a 24 volt input that is
This is a 24 volt
This is a 24
This is a 24 volt
This is a 24 volt
When the
When the
Control Inputs and Outputs
The sensor is only applicable on units
(19) Smoke Detector.
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.
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).
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.
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).
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. Table 2 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.
1 2 3 4
x x
x x
x x
x x
x x
x x x x
The unit mounted clogged
This is a 24 volt input that is used
The DDC Controller has
The DDC Controller features a
5 6 7
7