IOM-T-294
2205
© 2022 tekmar
25
Parameter
Range
Description
POST PURGE
0 .0 to 20 .0 minutes
Default: 2 .0 minutes
Set the boiler pump post purge time after the burner has shut off .
SYSTEM
BOILER MINIMUM
50 to 230°F
(10 .0 to 110 .0°C)
Default: 140°F (60 .0°C)
The minimum allowed boiler target temperature used for the non-condensing boiler
group . Check the boiler manufacturer’s manual for recommended minimum boiler
supply temperatures .
This setting is applicable if there is at least one boiler available in the non-condensing
boiler group .
BOILER MAXIMUM
50 to 230°F
(10 .0 to 110 .0°C)
Default: 200°F (93 .0°C)
The maximum allowed boiler target temperature .
STAGING
PID or Proportional
Set either PID or Proportional staging . PID staging is recommended for central
heating while Proportional staging is recommended for dedicated DHW applications .
PID AUTO
DIFFERENTIAL
Off or On
Default: On
Select if automatic PID differential is used . Available when using PID staging .
PID MANUAL
BOILER
DIFFERENTIAL
2 to 42°F
(1 .0 to 23 .5°C)
Default: 10°F (5 .5°C)
Set the manual PID boiler differential . Available when using PID staging and PID
Auto Differential is Off .
PID AUTOMATIC
STAGE DELAY
Off or On
Default: On
Select if automatic PID staging is used . Available when using PID staging .
PID MANUAL
STAGE DELAY
0 .5 to 40 .0 minutes
Default: 6 .0 minutes
Select the manual PID staging delay between boilers or boiler stages . Available when
using PID staging and PID Automatic Stage Delay is Off .
PROPORTIONAL
INTERSTAGE
DIFFERENTIAL
1 to 10°F
(0 .5 to 5 .5°C)
Default: 4°F (2 .0°C)
Set the temperature differential required to turn on the next boiler or next boiler stage .
Available when using Proportional staging .
PROPORTIONAL
INTERSTAGE
ON DELAY
0 .5 to 10 .0 minutes
Default: 1 .0 minutes
Set the boiler run time required before turning on the next boiler or the next boiler
stage . Available when using Proportional staging .
PROPORTIONAL
INTERSTAGE
OFF DELAY
0 .5 to 10 .0 minutes
Default: 0 .5 minutes
Set the boiler off time required before turning on the same boiler or the same boiler
stage again . Available when using Proportional staging .
MINIMUM STAGE
RUN TIME
0 .5 to 10 .0 minutes
Default: 0 .5 minutes
Set the minimum boiler run time required when a boiler or boiler stage is turned on .
Available when using Proportional staging .
MINIMUM STAGE
OFF TIME
0 .5 to 10 .0 minutes
Default: 0 .5 minutes
Set the minimum boiler off time required when a boiler or boiler stage is turned
off before it is allowed to turn back on . Available when using Proportional staging .
CONDENSING
GROUP
SEQUENCING
Sequential or Parallel
Default: Sequential
Select to use sequential or parallel boiler staging for condensing boilers .
NON-CONDENSING
GROUP
SEQUENCING
Sequential or Parallel
Default: Sequential
Select to use sequential or parallel boiler staging for non-condensing boilers .
CONDENSING
GROUP ROTATION
Off or On
Default: On
Select if equal runtime rotation is used for condensing boilers .
NON-CONDENSING
GROUP ROTATION
Off or On
Default: On
Select if equal runtime rotation is used for non-condensing boilers .
Settings (5 of 8)