PV20a / PV30a pellet burner
page
19/ 41
DK9902A1 www.pelltech.eu
During calibration burner has to be at WAITING status, all doors and windows of boiler room opened,
also boiler’s door has to be opened.
Error output
3.3
It is possible to connect additional devices as pump, modem etc to burner which are possible to turn on
or off when error occures. Error output’s plug is situated in upper part of controller and is marked ERR
(Figure 17). Output enables to connect to circuit up to 5A 230V devices.
PAR50 in boiler parameters menu determines if the circuit is open or closed during error. Table 5.
ERR output relay on the controller board adds various functions:
Table 5 PAR50 values
PAR50 value
Description
1
Normally open circuit. Only connected in ERROR state
2
Normally closed circuit. Only disconnected in ERROR state
3
Connected circuit in PREBURN, HEATUP, BURN and HOLD FLAME
4
Not used
5
Not used in PV20a/30a
Figure 17 Error output location
External boiler temperature sensor TMP1
3.4
External boiler temperature sensor enables the burner to maintain constant boiler’s water temperature.
To do that temperature sensor has to be installed to relevant place and connected to controllers plug
TMP1. In parameters menu PAR53 value has to be set more than 1.
When temperature holding state is activated, then burner will change its capacity according to water
temperature and speed of temperature changing. Burner starts to change its capacity when BURNING
status has lasted longer than set in PAR15. Capacity is changed after time set in PAR17.
Following actions must be done to enable temperature hold mode (THM):
1.
Mount external temperature sensor to boiler according to boiler manufacturer instructions.
2.
Disconnect burners internal overtemperature sensor from controllers TMP1 connector.
3.
Connect external sensor to TMP1 connector on controller board.
4.
Select PAR53 value “2” (sensor type) according to Table 6.
5.
Set required temperature - PAR54. It should be lower than boiler thermostat switch off
temperature. Otherwise the boiler thermostat would force the burner to turn off before reaching
PAR54 value.
6.
Optionally the hysteresis of desired temperature can be changed by PAR55.
