Ecojay SMARTZONE-4X Manual page 2

ECONOMIZER O
S Z
MART ONE
WHEN THE Y TERMINAL ON ZONE 4 IS ENERGIZED BY AN OUTDOOR SENSOR, A COOLING CALL FROM ANY OTHER THERMOSTAT (ZONE
1 – 3) WILL ACTIVATE ECONOMIZER MODE.
1. FRESH AIR DAMPER (Z-4) WILL OPEN
2. EQUIPMENT FAN (G) WILL ENERGIZE
3. ZONE DAMPERS CALLING FOR COOLING WILL OPEN
4. EQUIPMENT COMPRESSOR (Y1) WILL NOT ENERGIZE INITIALLY
5. IF THE SUPPLY TEMPERATURE DROPS BELOW THE LOW TEMP LIMIT**, THE FRESH AIR DAMPER WILL CLOSE BUT G WILL
CONTINUE TO RUN UNTIL THE SUPPLY TEMPERATURE RISES BACK ABOVE LOW TEMP LIMIT
6. ECONOMIZER MODE WILL STOP (FA DAMPER CLOSES) AND NORMAL COOLING (Y1) WILL START IF THE SUPPLY TEMPERATURE
RISES ABOVE THE ECONOMIZER HI TEMP LIMIT FOR 3 MINUTES. (SEE RIGHT TO SET THE ECONOMIZER HI TEMP LIMIT)
FRESH AIR (ECONOMIZER) THERMOSTAT
# AFET
PART
WIRING
O
UTSIDE
S
ENSOR
PERATION
R
C
Y
G
W
O/B
AFET
57.8
VENT
OFF
F
RESH
THERMOSTAT
O
UTDOOR
SETPOINT
V
ENT
O /O
N FF
A
IR
(OAS)
ECONOMIZER HI TEMP SETTING
TO SET THE ECONOMIZER HI TEMP LIMIT:
1. MAKE SURE ZONE 4 IS SET FOR "FA"
(SEE OTHER SIDE)
2. HOLD THE DOWN ▼BUTTON FOR 6 SECONDS AND RELEASE
3. "ECO AND HI TEMP" SHOULD FLASH ON THE DISPLAY, THEN
USE THE ▲▼BUTTONS TO SET
(DEFAULT = 60, RANGE = 58 – 68)
**NOTE: THE LOW TEMP LIMIT FOR ECONOMIZER IS THE SAME
AS THE "LO TEMP" LIMIT FOR EQUIPMENT CUT-OUT.
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AUTO
A
IR
T
EMP
F C
REE OOL
O /A
FF UTO
3.5"
8E
HI TEMP
LO TEMP
SUPPLY
ADJUST SETTINGS
DELAY ECO PURGE
S Z
MART ONE
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STAT
TYPE
R
SA1
C
SA2
Y
G
1
W
2
O/B GND
EC
R COM
C Y1
Y Y2
G
G
W1
W
EH
W2
O/B O/B
RC
R
RH
S Z
C MART ONE
4X
Y
G
Z1-PO
W
COM
ZS4X
O/B Z1-PC
2.0
R
Z2-PO
C
COM
Y
Z2-PC
G
Z3-PO
W
COM
Z3-PC
O/B
Z4-PO
24V
COM
24C
Z4-PC
FRESH AIR
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BUTTONS:
OUTDOOR TEMP SETPOINT
USE THE UP AND DOWN ARROW BUTTONS TO ADJUST THE "OUTDOOR TEMPERATURE
SETPOINT" WHEN OUTSIDE AIR TEMPERATURE IS BELOW THIS SETPOINT, THE
SMARTZONE CONTROLLER WILL BE SET TO "ECONOMIZER MODE" (SEE BELOW)
ECONOMIZER – OFF/AUTO
BYPASS
DAMPER
PRESS THE "FREE COOL" BUTTON TO CHANGE FROM OFF TO AUTO.
OFF = OUTSIDE TEMPERATURE IS IGNORED AND THE ECONOMIZER OUTPUT (Y) IS
OFF REGARDLESS OF OUTSIDE TEMPEARTURE.
AUTO = WHEN OUTSIDE TEMPERATURE IS BELOW OUTDOOR TEMP SETPOINT THE
ECONOMIZER OUTPUT (Y) WILL BE ENERGIZED. WHEN OUTSIDE TEMPERATURE IS
ABOVE "OUTDOOR TEMP SETPOINT" THE ECONOMIZER OUTPUT (Y) IS OFF.
VENT (FRESH AIR) – ON/OFF
PRESS THE "VENT" BUTTON TO TURN ON OR OFF FRESH AIR. THIS WILL MAKE A
DEMAND CALL TO THE SMARTZONE CONTROLLER TO MANUALLY BRING ON FRESH AIR.