Oilon ESi 6-17, Installation And Operation Manual

Page: 21 / 80

2.6.7 Speed control for heating circuit pumps
UPM3 auto ver. 1
The heating circuit pumps for an EMi or ELi heat pump need to be selected based on
the characteristics of the property’s heating system. Adjust the pumps in accordance
with the pump manufacturer’s instructions.
ESi heat pumps are supplied with Grundfos UPM3 AUTO circulation pumps. The pump
has three operating modes: Proportional pressure control, Constant pressure control
and Constant curve control. By default, the pump operates in proportional pressure
mode 3.
If a radiator system is used and a high flow rate causes noise in the pipes, you can
reduce the noise by using constant pressure mode 1 or 2.
Check the pump’s current operating mode by pressing the pump’s button briefly.
Proportional
pressure mode
LED1
Green
LED2
Green
LED3
Yellow
LED4
Yellow
LED5
Yellow
Proportional
pressure mode 1
X X
Proportional
pressure mode 2
X X X
Proportional
pressure mode 3
X X X X
Auto
Adapt
X
Constant
pressure mode
LED1
Green
LED2
Green
LED3
Yellow
LED4
Yellow
LED5
Yellow
Constant pressure
mode 1
X X
Constant pressure
mode 2
X X X
Constant pressure
mode 3
X X X X
Auto
Adapt
X
M8010 2204EN 19 (75)