Lennox ECOLEAN EAC 0672S, Installation Operating & Maintenance Manual

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15
ELECTRICAL SAFETY DEVICES
- The control circuit is protected against overloads and short circuits by a circuit breaker.
- The power circuit is protected against short circuit by fuses.
- The compressor and fan motors are also protected against overloads by an internal safety device.
The units contain the following safety devices:
1.- Electrical safety devices.
2.- Cooling system safety devices.
3.- Water system safety devices.
They protect the unit’s operation under both normal and abnormal conditions.
SYSTEM SAFETY DEVICES
Pressure switches
HIGH PRESSURE (HP): The system is protected against high system pressure by a high pressure switch HP trip is
reset manually by resetting the controller.
LOW PRESSURE (LP): The system is protected against low system pressures by a low pressure switch. The controller
will stop the unit if the system low pressure set point is reached 3 times in one hour. The LP trip is reset manually by
resetting the controller.
For heat pump units there are two low pressure switches one for cooling operation, the other for heating operation.
Operation for LP is the same but set point varies for the different operating modes.
ON START UP LP IS BYE PASSED FOR 2MIN.
ADJUSTMENTS
High pressure switch (bar)
Low pressure switch cool cycle (bar)
Low pressure switch heat cycle (bar)
Low pressure switch timer (minutes)
SET
Standard water temperature
RESET
Option low ambient to -15ºC
SET RESET
Option
low water
temperature
Ambient temp. standard
1,8 2,7
2 2,5
1,5 2
0,8 1,3
28,7 24
0,5 1,5
2'
0,5 1,5
1,5 2
1 1,5
0,5 1
28,7 24
0,5 1,5
0ºC OPTION 1
-5ºC OPTION 2
-10ºC OPTION 3
1.- GENERAL CHARACTERISTICS
1.7.- SAFETY DEVICES
ADJUSTMENTS
Compressor
fuses
Water pump
fuses
Fan
fuses
A (3 ~ 400V)
0091S 0111S 0151S 0191S 0211S 0251S 0291S 0351S 0431S0472S 0552S 0672S 0812S
A (3 ~ 230V)
A (1N ~ 230V)
A (3 ~ 400V)
A (3 ~ 230V)
FP2
Standard A (1N
~ 230V)
-- FP
A (3 ~ 400V) --
-- -- -- 6x16 6x16 6x16 -- 6x16
A (3 ~ 230V) -- -- -- -- 3X10 6x10 6x10 6x10 -- 6x10 3X10 3X10 3X10
3X16 3X16 3X16 3X16
FP1
A (1N ~ 230V) -- -- -- -- 1x10 1x20 1x20 1x20 1x10 1x20 1x10 1x10
--
Units
1003S1103S1203S1303S
A (3 ~ 400V)
A (1N ~ 230V)
A (3 ~ 400V)
3X20
3X10 3X25
3x16
3X25
3x16
3X32
3x20
3X40
3x25
3X50
3x25
3X62
3x32
3X80
3x40
6x50
6x25 6x63
6x32 6x80
6x40 3X40
3x20 6x40
6x25
1X32 -- -- -- -- -- -- -- -- -- -- -- --
3x6 3x6 3x6 3x6 3x6 3x6 3x6 3x6 3x6 3x6
3x6 3x6 3x6 3x6 3x6 3x6 3x6 3x6 3x6 3x6
-- -- -- -- -- -- -- -- 1x16 1x16 1x16 -- 1x16
-- -- -- -- -- -- -- -- -- -- -- -- --
-- -- --
-- -- --
-- -- -- -- -- -- -- -- -- -- 1x6 1x6 1x6
6x32 6x32 6x32 6x25
-- -- -- --
3x40 3x50 3x63 3x40
-- -- -- -- -- -- -- -- -- -- -- -- -- 6x10 6x10 6x10 6x10
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
-- -- -- --
3x10 3x10 3x10 3x10
-- -- -- -- -- -- -- -- -- -- -- -- -- 6x10 6x10 6x10 6x10
6x10 6x10 6x10 6x10
It is strictly forbidden to change or remove any safety device.
When a safety device is activated, qualified personnel must investigate the unit and rectify the
problem.
Note: Before resetting a safety device, the cause of the problem must be found and rectified before
the unit can be restarted.
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