Danfoss ECtemp 850 IV Data sheet
Data Sheet
YEAR
WARRANTY
Product specifications
Product
ECtemp 850 IV
ECtemp 850 version IV is an advanced thermostat with LED display used for
outdoor ground or roof applications. The sensors provide information about both
moisture level and temperature, resulting in an optimal control of the heating system.
The ECtemp 850 can handle up to 2 independent areas, in any of the following
combinations:
• Single system for roof or ground (1 system, 1–4 sensors).
• Combination system: 1 ground system and 1 roof system (2 systems, 2–4 sensors
total, min. 1 sensor per system).
• Dual system: either 2 roof systems or 2 ground systems (2 systems, 2–4 sensors total,
min. 1 sensor per system).
In the dual / combination systems it is possible to prioritize between the zones, e.g.
if only a limited power output is available.
Benefits
• Single, combination or dual zones
• Up to 4 sensors
• Moisture and temperature sensing
• Self diagnosing programme
• Safety level adjustment
• Alarm function
Approvals:
Standard compliance
• EN/IEC 60730-1 (general)
• EN/IEC 60730-2-9 (thermostat)
Operation voltage:
PSU 24 VDC
ECtemp 850
Power consumption, max.:
ECtemp 850
Roof sensor
Ground sensor
Relay resistive load, max.:
System A / B relay
Alarm relay
Inductive load each relay, max.
Sensing unit DEVIbus™ connected moisture sensor(s)
Cable specification max 1 x 4 mm2 or 2 x 2,5 mm
Ball pressure test temperature 75 °C
Pollution degree 2 (domestic use)
Controller type 1 C
Storage temperature -20 °C to +65 °C
IP class 20
Protection class
Dimensions ECtemp 850 (H/W/D) 85 x 105 x 53 mm
Mounting method DIN rail
Weight 720 g
180–250 VAC, 50–60 Hz / 24 VDC, 2,5 A
24 VDC ±10%
3 W
8 W (each)
13 W (each)
15 A (3450 W) @ 230 V
2 A @ 230 V
1 A @ 230 V, power factor 0,3
2
Class II -
Types
Item no. Product name Typ e Power Size, mm
088L04 49
088L0457 Ground sensor, 1 pcs. ECtemp 850 IV Latin with PSU 13 W 15 x 24 x 216 -50...+70 °C 5703466168769
088L0458 Ground sensor, 2 pcs.
088L0 459 Roof sensor For ECtemp 850, cable - 15 m 8 W Ø 93 х 98 -30...+70 °С 5703466150290
ECtemp 850 IV
no sensors
Without sensors,
with PSU CP-D 24 VDC/2,5 A
For ECtemp 850, with sensor
tube, cable - 15 m
105 x 23,5 x 53 -10...+50 °С 5703466130391
13 W 15 х 24 х 216 -50...+70 °С 57034 66150283
ECtemp 850 with PSU Ground sensor Roof sensor
AI281833535236en-010104Electrical heating · ©Danfoss
Operation
temperature
EAN no.
G2*
+
-
24 V
PSU
DEVIbus™ sensors
G1
+
-
~~
180...250 V~
SensorSensor
white
white
red
black
white
white
red
black
black
red
white
white
24 V
230 V
PSU
2,5 A
ECtemp 850 IV
DC supply
13 14 15 16 17 18 19 20 21 22 23 24
1 23456789101112
ALARM
2 A 250 V~
System A
15 A 250 V~
System B
15 A 250 V~
A
A
A
B
B
B
A
A
A
A
A
B
B
A
A
A
A
A
A
A
B
B
B
A
A
B
A
A
Connection scheme
System configurations
Zone support saves energy
ECtemp 850 lets you divide your area in to 2 zones, e.g. a North and South side. In this way it is possible to save energy, when the
South side is free of ice and snow faster because of the heat from the sun.
one zone for ground (system B)
Electrical heating · ©Danfoss AI281833535236en-010104
Combined system -
one zone for roof (system A),
Single zone system for roofs
(system A)
Single zone system for ground
Two zone system for roofs
(systems A and B)
(system A)
Two zone system for ground
(systems A and B)
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