Enertech ZS., Installation & Operation Manual, Page: 41 / 89

41 IOM, ZS/ZT Models Enertech Global
SECTION 6: CONTROLS
CONDITION
GREEN
HP
ORANGE
LP
RED
FS
YELLOW
CO
GREEN
STATUS
L TERMINAL‐
24 VAC
9, 10
NORMAL MODE FLASH
TEST MODE
1
HP/ FS FAULT
11
FLASH FLASH
HP/ FS LOCKOUT
11
ON FLASH FLASH‐2 PULSES
LP FAULT FLASH FLASH
LP LOCKOUT ON FLASH FLASH‐4 PULSES
SOURCE COIL FRZ/ WF FAULT (SCT/FS)
2
FLASH FLASH
SOURCE COIL FRZ/ WF LOCKOUT (SCT/FS)
2
ON FLASH FLASH‐ 6 PULSES
LOAD/ AIR COIL FRZ FAULT (LCT)
3, 4
FLASH FLASH FLASH
LOAD/ AIR COIL FRZ LOCKOUT (LCT)
3, 4
ON ON FLASH FLASH‐8 PULSES
CO FAULT FLASH FLASH
CO LOCKOUT ON FLASH FLASH‐10 PULSES
O/ U VOLTAGE FLASH FLASH FLASH FLASH FLASH FLASH‐11 PULSES
LCT SENSOR LOCKOUT/FAULTY
5
FLASH ON FLASH FLASH‐12 PULSES
DGT SENSOR FAULTY
5
FLASH ON FLASH FLASH‐13 PULSES
DLWT FAULTY
5, 8
FLASH ON FLASH FLASH‐14 PULSES
SCT FAULTY
5
ON FLASH FLASH FLASH‐15 PULSES
LCT & SCT SWAPPED
6
ON ON FLASH‐16 PULSES
DGT > 220F FAULT
7
FLASH FLASH ON FLASH
DGT > 220F LOCKOUT
7
ON ON ON FLASH FLASH‐18 PULSES
DIP SWITCH
FSW
11
AFRZ
TEST
O/ U
NOTES:
5. THIS FAULT INDICATES A BAD SENSOR (OPEN, SHORTED, OR DISCONNECTED).
7. THIS FAULT/ LOCKOUT INDICATES THAT THE DISHCARGE GAS TEMPERATURE IS ABOVE 220°F.
10. THE 'L' TERMINAL CONTROLS A FAULT LED AT THE THERMOSTAT OR DRIVES AN AUXILLIARY FAULT RELAY.
REV B. 08/30/16
6. THE CHECK TO DETERMINE IF THE LCT AND SCT SENSORS ARE SWAPPED, OCCURS IN TEST MODE ONLY, 60 SECONDS AFTER THE 'CC' TERMINAL IS
ENERGIZED.
8. UNITS WITHOUT DESUPERHEATER (HWG), DO NOT HAVE A DLWT SENSOR, SO IT IS IGNORED BY THE LOCKOUT BOARD.
9. CONNECT A MULTIMETER ACROSS THE 'L' AND 'C' TERMINALS TO CHECK FOR 24 VAC LOCKOUT SIGNAL. THERMOSTAT TURNS ON/FLASHES 'CALL
FOR SERVICE' INDICATION.
11. THE HIGH PRESSURE AND FLOW SWITCHES ARE WIRED IN SERIES AT THE 'HP1' AND 'HP2' TERMINALS. CHECK BOTH SWITCHES TO DETERMINE
EXACT FAULT.
4. NOT ALL MODELS HAVE THIS FEATURE.
LCT & SCT MONITORED FOR FLOW‐ 'FS' IS
WIRED IN SERIES WITH 'HP' AT HP1 & HP2 FS' TERMINALS USED FOR FLOW SWITCH‐ LCT & SCT
IGNORED
OPEN LOOP MODE‐ 30F SETTING FOR SCT CLOSED LOOP MODE‐ 15F SETTING FOR SCT
OPERATES IN NORMAL MODE WITH
STANDARD DELAYS
OPERATES IN TEST MODE WITH DELAYS SPED UP
FEATURE IS INACTIVE FEATURE IS ACTIVE
1. WHEN TEST MODE DIP SWITCH IS 'ON', GREEN STATUS LED WILL BE OFF.
2. THE SOURCE COIL FREEZE/ WATER FLOW FAULT COULD EITHER BE THE SENSOR LOCATED BETWEEN THE TXV AND SOURCE COAX, OR AN EXTERNAL
FLOW SWITCH.
3. THE LOAD/ AIR COIL FREEZE PROTECTION SENSOR IS LOCATED BETWEEN THE TXV AND LOAD COAX IN WATER‐TO‐WATER UNITS, AND BETWEEN THE
TXV AND AIR COIL IN WATER‐TO‐AIR UNITS.
LOCKOUT BOARD LED IDENTIFICATION & L TERMINAL STATUS
LOCKOUT BOARD DIP SWITCHES
OFF ON
Lockout Board LED Identification