Unigas LMV5 Series Manual Of Installation - Use - Maintenance page 92

11 Cold start thermal shock (CSTP)
If there is a steam boiler or a boiler that must start up cold in the plant and to avoid thermal shocks a slow heating is required for the boiler by maintaining
the burner at the minimum output, the automatic function "Cold start thermal shock" can be performed instead of the manual operation at minimum load.
The CSTP (Cold Start Thermal Schock) function can be enabled by the Technical service only (access by reserved password). if this function is enabled,
when the burner starts up the "Thermal shock protection activated" message will be shown.
If this function is not enabled, after start-up, the burner will rapidly increase the load according to the requested value.
The CSTP function is a Service level paramter, to enable this function proceed as follows:
1st level 2nd level
Params & Display
LoadController
3rd level 4th level
ColdStart
ColdStartOn
ThresholdOn
StageLoad
StageSetp_M od
Stage- Setp_Stage
MaxTme- Mod
MaxTmeStage
ThresholdOff
Additional-Sens
Temp Cold- Start
Setpoint AddSensor 0...450 °C
Release Stages
MaxTmeStage
ThresholdOff
AdditionalSens
Temp Cold- Start
Setpoint Add- Sensor 0...450 °C
Release Stages
5th level 6th level
Deactivated
Activated
0...100%Wcurren 20%
0..100% 15%
1...100% Wcurrent 5%
1...100% Wcurrent 5%
1...63 min 3 min
1...63 min 3 min
1...100% Wcurrent 80%
Deactivated
Pt100 Deactivated Select extra sensor for cold start thermal
Pt1000
Ni1000
0...2000 °C
60°C
no release/ release release
1...63 min 3 min
1...100% Wcurrent 80%
deactivated Pt100
deactivated
Pt1000 Ni1000
0...2000 °C
60 °C
no release/ release release
36
Description
Menu level for making the parameter
settings
Settings for the internal load controller
Settings for the cold start (thermal shock
protection)
The parameter ColdStartOn deactivates
or activates the Cold start protection
function, the other parameters are factory
set and can be changed following the next
programming rows (see diagram)
Cold start thermal shock protection,
maximum time per step (multistage)
Cold start thermal shock protection
deactivation level referred to the current
set-point (Wcurrent)
shock protection
Display of temperature acquired by extra
sensor for the cold start thermal shock
protection function
Set-point for extra sensor for cold start
thermal shock protection
Cold start thermal shock protection load
step stage mode (multistage operation)
Cold start thermal shock protection,
maximum time per step (multistage)
Cold start thermal shock protection
deactivation level referred to the current
set-point (Wcurrent)
Select extra sensor for cold start thermal
shock protection
Display of temperature acquired by extra
sensor for the cold start thermal shock
protection function
Set-point for extra sensor for cold start
thermal shock protection
Cold start thermal shock protection load
step stage mode (multistage operation)