29
ECO-Y INSTALLATION MANUAL
Cooling (Y1,O)
The blower motor is started immediately after the “Y1” input is
received, and the compressor is energized 10 seconds after the
“Y1” input.
Cool, 2
nd
Stage (Y1, Y2, 0)
When the gray wire is connected to the motor (Y2 is field
connected) the blower speed will increase.
Blower (G only)
The blower motor is started immediately after the “G” input is
received; and it will remain on for 30 seconds at the end of each
heating or cooling cycle.
Lockout Conditions
During lockout mode, the appropriate unit and thermostat lockout
LEDs will illuminate. The compressor, loop pump(s), and hot water
generator pump outputs are de-energized. If the thermostat calls
for heating, emergency heat operation will occur. All lockout modes
can be reset at the thermostat after turning the unit off, and then
on, which restores normal operation but keeps the unit lockout
LED illuminated. Interruption of power to the unit will reset lockout
without a waiting period and clear all lockout LEDs.
High Pressure
This lockout mode occurs when the normally closed safety switch is
opened momentarily (set at 600 PSI).
Low Pressure
This lockout mode occurs when the normally closed low pressure
switch is opened for 30 continuous seconds (set at 40 PSI).
Freeze Detection
(Water Flow)
This lockout mode occurs when the freeze thermistor temperature
is at or below the selected freeze detection point (well 30°F or loop
15°F) for 30 continuous seconds.
Condensate Overflow
This lockout mode occurs when the condensate overflow level has
been reached for 30 continuous seconds.
Controls cont.
DIP Switch Settings
Prior to powering unit, ensure that all DIP switches on SW1 are set properly according to the table below.
FACTORY SETUP DIP SWITCHES (SW1)
Dip Switch
Number
Description
"OFF" Position
"ON" Position
SW1-
1
Service Test Mode
On the control, allows field selection of "NORMAL" or "TEST" operational modes, Test mode
accelerates most timing functions 16 times to allow faster troubleshooting. Test mode also allows
viewing the "CURRENT" status of the fault inputs on the LED display.
Test Mode
Normal Speed Operation
SW1-
2
Freeze Detection Setting
This DIP switch allows field selection of low source water thermistor fault sensing for "WELL" water
(30°F) or "LOOP" (15°F) for antifreeze protected earth loops.
"LOOP" (15°F)
"WELL" (30°F)
SW1-
3
Not Available
N/A
Normal Operation
SW1-
4
I/O Display Mode
This DIP switch enables Input/Output Display or Status/Current Fault on LED Board. Refer to
SW2 for operation and positioning.
Input/Output Display
Mode
Status/Current Fault
Display Mode
SW1-
5
Not Available
N/A
Normal Operation
SW2-
LED Display (On LED Board)
This DIP switch enables Normal Status or Input display mode in the "OFF" position and Current
Fault or Output display mode in the "ON" position.
Status or Inputs Display
Mode
Current Fault or Output
Display Mode
Operation Logic Data Table
Mode
Inputs
Blower
Comp
RV
Htg
Y
Auto
ON
OFF
Clg
Y, O
Auto
ON
ON
Blower Only
G/Y2
ON
OFF
OFF
11/13/09
11/13/09