LAARS Mascot LX MLXC 175 MBH - Install and Operating Manual - Manual (Page 38)

LAARS Heating Systems Page 34
Table 15. Installer Parameters (part 1)
Laars SIT Parameters
Page 1
USER MODE
PARAMETER Description DEFAULT Parameter
U000 DHW set point 120 °F USHWDEM
U001 CH set point 130 ° F US1SETP
U002 Installer Password 15 USPWD
U003 Display timeout 60 sec DUI1
U004 Unit temperature (F / C) ° F DUI2
D00 = dhw Temp
INSTALLER MODE
PARAMETER Description DEFAULT Parameter
P01 Service notification months 12 SERVICET
P02 Service notification hours since last service 8760 SERVICERUN
P03 Service notification cycles 500 SERVICEOP
P04 Timeout for service mode 180 secs * displayed as seconds TMAXSERV
P06 Cascade address and configuration -1 CASCADD
P07 Cascade temperature set point 140 ° F CASCREGSETP
P08 Cascade temperature offset 10 ° F CASCBLO
P09 Cascade temperature hysteresis from offset 20 ° F CASCHYS
P11 min time a bic must remain on or off 30 sec shows 300 CASCMINTONOF
P12 min next on time 60 sec shows 600 CASCMINTNON
P23 Anti cycling time 30 sec TANTICY
P24 Anti cycling dropoff temperature on s2 10 °F ANTICYDROF
P25 0-10V to Power (fan speed) Enabled FUNCFLAG
P26 0-10V to outlet setpoint Disabled FUNCFLAG
P27 Alarm contact configuration Enabled Enabled = NO / Disable FUNCFLAG
P28 DHW demand blocks system pump Enable / Disable Disabled FUNCFLAG
P29 System Pump Always On Enable / Disable Disabled FUNCFLAG
P30 0-10V Input - Enable / Disable Enabled FUNCFLAG
P31 BMS Voltage at Minimum 2 VDC shows 200 V010AV
P32 BMS Voltage at Maximum 10 VDC shows 1000 V010BV
P33 On threshold Voltage 1 VDC shows 100 V010ON
P34 On hysteresis Voltage .5 VDC shows 50 V010HYS
P35 BMS Rate at Minimum Voltage 20% shows 200 V010APOW
P36 BMS Rate at Maximum Voltage 100% shows 1000 V010BPOW
P37 BMS Temperature Setpoint at Minimum Voltage 70 °F V010AC
P38 BMS Temperature Setpoint at Maximum Voltage 180 °F V010BC
P39 Postcirculation time CH pump 30 sec TPCIRCCH
P40 Postcirculation time DHW pump 30 sec TPCIRCHW
P41 Postcirculation time System pump 30 sec TPCIRCSYS
P42 Summer kick CH pump timer 20 sec SKICKCH
P43 Summer kick DHW pump timer 20 sec SKICKHW
P44 Summer kick System pump timer 20 sec SKICKSYS
P45 Delta T Setpoint for CH pump speed control 20 °F CHPMPSET
P46 Minimum output voltage for CH pump output 3.5 VDC shows 350 CHPMPMINV
P47 Differential Max Fan Speed for DHW demand 0 RPM MAXFANHWDIFF
P48 Differential Maximum Fan Speed for CH demand 0 RPM MAXFANCHDIFF
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8.4 INSTALLER Mode
INSTALLER Mode is an extensive set of parameters
that can be changed to suit the individual installation and
should only be accessed by a trained service technician or
installer.
To access the INSTALLER Mode, hold
'Select/OK' and the down ˅ arrow key simultaneously
until U00 is displayed. Press 'Select/OK' again and then
release. Change the value to 15 and then press 'Select/OK'
again. The INSTALLER Mode Parameters will then
be accessible by pressing the Up or Down arrows.
( See Table 15 and Table 16 )
To change the value of that parameter, press
Select/OK button again. The parameter will blink.
Pressing the Up or Down arrows will increase or
decrease the parameter value. The value will be
confirmed by pressing Select/OK button and the blink