Watts tekmar 294 - Settings - Boiler Configuration; Boiler Manufacturer and Type Settings; Boiler Fuel and Group Settings; Boiler Modulation Settings

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IOM-T-294 2205 © 2022 tekmar
Parameter Range Description
BOILER
MANUFACTURER
Based on presets file
Default: Custom
Select the boiler manufacturer. Choose Custom if the installed boiler is not included
in the list.
BOILER SERIES Based on presets file Select the boiler series. Available when a boiler manufacturer name is selected.
BOILER MODEL Based on presets file Select the boiler model. Available when a boiler manufacturer name is selected.
BOILER FUEL
NG Gas, LP Gas, Oil,
Electric, Wood
Set the boiler’s fuel type.
BOILER TYPE
1-Stage, 2-Stage,
3-Stage, 4-Stage,
Modulating Fire Rate,
Modulating Target
Temperature
Select if the boiler has multiple stages or is modulating. Both modulating firing rate
and target temperature is supported.
BOILER GROUP
Condensing or
Non-Condensing
Default:
Non-condensing
Select which boiler group the boiler should belong. This supports hybrid boiler
systems that have both condensing and non-condensing boilers.
BOILER MASS
Low, Medium, High,
Very High
Set the boiler’s mass. This setting changes the PID staging operation. Setting a
higher mass makes the time delay between boiler stages longer.
FIRE DELAY
10 to 180 seconds
Default: 30 seconds
Set the fire delay time. This is the time duration from when the control provides an
enable signal to when the boiler completes ignition.
BOILER HIGH
OUTPUT
10 to 9990 MBTU/h
Default: 400 MBTU/h
Set the boiler burner’s BTU output at full fire. Units are in thousands of BTUs per hour.
MODULATION TYPE
0-10Vdc, 4-20 mA
Default: 0-10 Vdc
Set the type of analog signal received by the boiler to modulate the firing rate or
target temperature.
BOILER LOW
OUTPUT
10 to 9990 MBTU/h
Default: 80 MBTU/h
Set the boiler burner’s BTU output at low fire. Units are in thousands of BTUs per hour.
MODULATION
DELAY
0 to 180 seconds
Default: 0 seconds
Set the modulation delay time. This is the time that the boiler burner modulation is
held at low fire.
MODULATION
MOTOR SPEED
10 to 230 seconds
Default: 30 seconds
Set the modulation motor speed. This is the time required to change from low to
high fire.
START
MODULATION
0 to 50%
Default: 0%
Set the starting modulation rate during boiler ignition.
MINIMUM
MODULATION
0 to 50%
Default: 0%
Set the low fire modulation rate.
MAXIMUM
MODULATION
50 to 100%
Default: 100%
Set the high fire modulation rate.
OUTPUT EMS
SIGNAL MINIMUM
0.5 to 10.0 Vdc
Default: 1.0 Vdc
Set the EMS output signal minimum DC voltage to the boiler.
EMS
TEMPERATURE
MINIMUM
50 to 210°F
(10.0 to 99.0°C)
Default: 50°F (10.0°C)
The EMS signal operates on a linear scale. Set the temperature when the EMS signal
is at the lowest output.
EMS
TEMPERATURE
MAXIMUM
50 to 210°F
(10.0 to 99.0°C)
Default: 210°F (99.0°C)
The EMS signal operates on a linear scale. Set the temperature when the EMS signal
is at the highest output of 10 Vdc or 20 mA.
Settings (4 of 8)