BC-HM VI.72.M4.02 Danfoss 11/97 7
Selection of system type
EPU 2370 is a multipurpose control for
use with several different types of
systems. Therefore the type of system
must be selected before the control is
operated. The selection procedure is as
follows: 1) Connect sensors, 2) Connect
voltage, 3) Select system type.
The individual system type numbers
denote different control principles. When
the necessary sensors have been
connected and the system type
selected, control operation on that
principle is automatically activated.
The following system types can be
selected in P0.2 (see also page 8):
System
System-
Description type Page
type
number
Installation 0
No control, but sensor temperatures can be
read off and valve motor and relay outputs can be
controlled manually.
Hot-water-service system 1 22-29
Control of flow heat exchanger with 1-A and 1-B
two and three-way valve - (PI).
Control of hot-water-service system with 1-C
secondary mixing - (PI)
Control of heat exchanger - storage tank charging with 1-D and 1-E
one or two tank sensors - (ON/OFF + PI).
Radiator system 2 30-33
Constant flow temperature control - (PI) 2-A
Constant room temperature control - (P+PI) 2-B
Water to air system (unit heater) 3 34-37
Constant room temperature control - (P+PI) 3-A
Floor heating system 4 38-41
Constant flow temperature control - (PI) 4-A
Constant room temperature control - (P+PI) 4-B
Ventilation system 5 42-45
Constant duct temperature control - (PI) 5-A
Constant room temperature control - (P+PI) 5-B
Refrigeration system 6 46-48
Constant brine temperature control - (PI) 6-A
Constant room temperature control - (P+PI) 6-B
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