Pressure Switch-Max-Gas, (Psmax-Gas) X9-03; Pressure Switch-Min-Oil (Psmin-Oil) X5-01; Pressure Switch-Max-Oil (Psmax-Oil) X5-02; Start Release-Oil (Start) X6-01 - Siemens LMV5 Series Basic Documentation

Pressure switch-max-gas,
(PSmax-gas)
X9–03
Pressure switch-min-oil
(PSmin-oil)
X5–01
Pressure switch-max-
Oil (PSmax-Oil)
X5–02
Start release-oil
(START)
X6–01
Siemens Building Technologies
HVAC Products
The input is used for connecting the gas pressure switch-max. It is only active when
firing on gas.
The signal is anticipated when «TSA1» starts.
If the gas pressure is exceeded, at least safety shutdown will occur.
The input can be deactivated.
Parameter:
GasPressureMax (activated / deactivated)
There is a delayed reaction to loss of gas pressure during «TSA1» and «TSA2» to
prevent shutdown caused by pressure shocks when the valves open.
Parameter:
PressReacTme
The input is used for connecting an oil pressure switch-min. It is only active when firing
on oil.
a) Parameter:
OilPressureMin (activated)
It is anticipated that the pressure signal appears during preignition to be critically valued
(with HOgp in Phase 44). If there is no oil pressure, or if the oil pressure drops, at least
safety shutdown will occur. From The signal will be valued from TSA1. If there is no oil
pressure, at least safety shutdown will occur.
b) Parameter:
OilPressureMin (act from ts)
During preignition, there is no waiting for the oil pressure. The signal will be valued from
TSA1. If there is no oil pressure, at least safety shutdown will occur.
Note: This kind of parameterization is only permitted in case of individual system
approvals.
c) Parameter:
OilPressureMin (deactivated)
The input can be deactivated.
There is a delayed reaction to loss of oil pressure during TSA1 and TSA2 to prevent
shutdown caused by pressure shocks when the valves open.
Parameter:
PressReacTme
The input is used for connecting an oil pressure switch-max. It is active only when firing
on oil.
The maximum oil pressure may not be exceeded. If exceeded, at least one safety
shutdown will occur.
The input can be deactivated.
Parameter:
OilPressureMax (activated / deactivated)
There is a delayed reaction to loss of oil pressure during «TSA1» and «TSA2» to
prevent shutdown caused by pressure shocks when the valves open.
Parameter:
PressReacTme
The input is used for connecting a start signal, e.g. from the release contact of an
external outside air damper. It is only active when firing on oil.
The signal is anticipated in Phase 21. If the signal is not delivered, or if it is lost,
shutdown will occur.
The input can be deactivated.
Parameter:
StartReleaseOil (activated / deactivated)
Basic Documentation LMV51...
4 Burner control
37/278
CC1P7550en
01.10.2003