LAARS Mascot LX MLXC 175 MBH - Install and Operating Manual User 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
ANT
ICY
CL
ING &
F
LA
GS
Us
er
set
tin
gs
Ser
vi
ce
C
ont
rol
BMS
CI
RC
U
LA
TI
O
N
PU
M
PS
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
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