Daikin Enfinity CCH - Controller Terminal Functions and Settings

Controls
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Table 5: MicroTech III unit controller terminals locations
and descriptions
H1 – 1 24 24 VAC Power Input
H1 – 2 C 24 VAC common
H2 – 1 SL1 Fan Low Speed Output – Switched L1
H2 – 2 Blank Terminal
H2 – 3 N Fan Low Speed Output – Neutral
H3 – 1 HP1-1 Comp High Pressure Switch (HP1) Input Terminal 1
H3 – 2 HP1-2 Comp High Pressure Switch (HP1) Input Terminal 2
H4 – 1 1 Discharge Air Temp Sensor – Common
H4 – 2 Discharge Air Temp Sensor – Signal
H4 – 3 Leaving Water Temp Sensor – Common
H4 – 4 Leaving Water Temp Sensor – Signal
H5 – 1 1 I/O Expansion Module Common (Gnd)
H5 – 2 I/O Expansion Module Common (Gnd)
H5 – 3 I/O Expansion Module +5 VDC
H5 – 4 I/O Expansion Module SPI CE1
H5 – 5 I/O Expansion Module SPI CLK
H5 – 6 I/O Expansion Module SPI OUT
H5 – 7 I/O Expansion Module SPI IN
H5 – 8 I/O Expansion Module +12 VDC
H5 – 9 I/O Expansion Module 24 VAC
H5 – 10 I/O Expansion Module 24 VAC
H5 – 11 No Connection
H5 – 12 No Connection
H6 – 1 1 CondensateOverowSignalInput
H6 – 2 Comp#1 Suction Temp Sensor (LT1) – Common
H6 – 3 Comp#1 Suction Temp Sensor (LT1) – Signal
H6 – 4 Comp#1 Low Pressure Switch (LP1) – Source Voltage
H6 – 5 Comp#1 Low Pressure Switch (LP1) – Signal
H6 – 6 Reversing Valve#1 – Common
H6 – 7 Reversing Valve#1 – Output
H7 – 1 1 No Connection
H7 – 2 No Connection
H7 – 3 Red LED Output
H7 – 4 Green LED Output
H7 – 5 Yellow LED Output
H7 – 6 Red-Green-Yellow LED Common
H8 – 1 1 Isolation Valve/Pump Request Relay N/O
H8 – 2 Isolation Valve/Pump Request Relay N/C
H8 – 3 24 VAC Common
H9 – 1 1 Room Temp Sensor & Tenant Override – Signal
H9 – 2 Room Temp Sensor & Tenant Override – Common
TB1 – 1 1 Room Sensor – Status LED Output
TB1 – 2 2 Room Sensor – Fan Mode & Unit Mode Switches
TB1 – 3 3 Room Sensor – Setpoint Adjust
TB1 – 4 4 Room Sensor – Room Temp Sensor & Tenant Override
TB1 – 5 5 Room Sensor – DC Signal Common
TB2 – 1 R 24 VAC
TB2 – 2 A Alarm Output
TB2 – 3 W2 Thermostat – Heat Stage #2 Input
TB2 – 4 W1 Thermostat – Heat Stage #1 Input
TB2 – 5 Y2 Thermostat – Cool Stage #2 Input
TB2 – 6 Y1 Thermostat – Cool Stage #1 Input
TB2 – 7 G Thermostat – Fan Input
TB2 – 8 O Thermostat – Tenant Override Input
TB2 – 9 C 24 VAC Common
TB3 – 1 E Emergency Shutdown Input
TB3 – 2 U Unoccupied/Occupied Input
L1 – 1 L1 - 1 Line Voltage Terminal 1
L1 – 2 L1 - 2 Line Voltage Terminal 2
L1 – 3 L1 - 3 Line Voltage Terminal 3
N1 N1 Neutral Terminal 1
N2 N2 Neutral Terminal 2
N3 N3 Neutral Terminal 3
COMP
Relay
SWL1 Switch – L1 Voltage
L1 No Connection
Table 6: MicroTech III Controller Configuration Jumper Settings
Baseboard Description Jumper(s) Jumper Setting Function
Normal / Test Mode JP1
Open Normal Operation
Shorted Service / Test Mode
Fan Operation JP2
Open Continuous Fan Operation (On), when not operating in the unccupied mode.
Shorted Cycling Fan Operation (Auto)
Loop Fluid
JP3
(see warning)
Open Water freeze protection (factory default setting)
Shorted Systems with anti-freeze protection
Alarm "A" Terminal Output Polarity JP4
Open Fault de-energizes alarm output to 0VAC.
Shorted Fault energizes alarm output to 24VAC.
Room Sensor Setpoint
Potentiometer Range
JP5
Open Short Range: -3 to +3 ºF (-1.67 to +1.67 ºC)
Shorted Long Range: 55 to 95 ºF (12.78 to 35 ºC)
Thermostat / Room Sensor JP6
Open Thermostat Control
Shorted Room Sensor Control
Not Used JP7 Open –
Not Used JP8 Open –
WARNING
Properantifreeze/watersolutionisrequiredtominimizethepotentialofuidfreeze-up.JumperJP3isfactorysetforwaterfreezeprotectionwiththejumperopen.Operationwithanti-freeze
protectionrequiresJP3tobeeldconguredforthejumperclosed.Ifunitisemployingafreshwatersystem(noanti-freezeprotection),itisextremelyimportantthatJP3jumpersetting
remains in the open position (factory default setting) in order to shut down the unit at the appropriate water temperature to protect your heat pump from freezing. Failure to do so can result
inunitdamageanduidleaks.”