ECR International Utica Boilers UCS 240 Installation, Operation & Maintenance Manual page 45

4.
Analog Temperature-Based Control - 0 - 10 V
signal controls boiler supply temperature between 32ºF
(0ºC )and 176ºF (80ºC). Control modulates on basis
of supply temperature, heat output varies between
minimum and maximum values based on supply
temperature set point calculated by the controller.
Jumper 2 on the interface is used to select either
temperature control (
5.
Analog Heat Output - Based Control - 0-10V signal
controls boiler output between 0% and 100%. Minimum
and maximum values are limited. Minimum output
is linked to boiler's modulation depth. Output varies
between minimum and maximum value on basis of value
determined by controller.
Dependent on minimum modulation depth (set speeds, standard 20%)
8 - ELECTRICAL CONNECTIONS
) or heat output control (%).
FIGURE 8-7 Analog Temperature Based Control
FIGURE 8-8 Analog Output 0-10V
6.
Analog Output - 0-10V - Temperature or heat
output can be chosen for this feedback message.
The two controls are described briefly below.
Jumper 1 on the interface is used to select either
temperature control (
Input
Jumper 1
Signal (V)
0
0.5
2.0 - 10.0
Dependent on minimum modulation depth (set speeds, standard 20%)
(1)
43
) or heat output control (%).
Temperature
Description
(°F/°C)
32-59
(0-15)
59-72
(15-20)
72-176 Temperature
1
(20-80)
PN 240011654, Rev. J [01/31/2020]
Boiler off
Hysteresis
required