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T6651E CM27 OEM 7-DAY CHRONOTHERM
EN0R 8505 R1 11/98
DIMENSIONS
80mm
41mm
145mm
130mm
SPECIFICATIONS
Batteries
:
2 x 1.5 V IEC LR6 (AA) Alkaline cells
Battery life : 4 year minimum (Duracell MN1500)
Battery
replacement
: 1 minute memory retention
Switch type : SPST (potential free) SPDT also
available
Electrical rating : 230 V~, 50...60 Hz, 0.1 A to 5 A resistive;
0.1 A to 2 A inductive (0.6 pf)
24 V~, 50...60 Hz, 0.5 A to 5 A resistive
0.5 A to 2 A inductive (0.6 pf)
Time display : 24 hour or 12 hour AM/PM format
Time keeping
accuracy
: Better than 10 minutes per year
Program : 7-day with 4 daily independent setpoints
Time setting
resolution
: Time of day - 1 minute
Program - 10 minute steps
Temperature
setting range
:
Program -5 to 30
o
C in 0.5 K steps
Frost - 5 to 10
o
C in 0.5 K steps
Temperature
control accuracy
: ±0.5 K (nominal) @ 20
o
C, 50% load
3 K /hour
Control form : P + I (Proportional + Integral)
Minimum
ON/OFF period
: 10% of cycle rate (1 minute minimum)
Cycle rate Selectable by application (see table
below)
Wiring : Terminal block capable of accepting wires
up to 2.5 mm
2
Wire access : Mains wiring - rear, right or below
Low voltage wiring - rear, left or below
Dimensions : 130 x 80 x 41 mm (w x h x d)
130 x 145 x 41 mm (w x h x d) (flap open)
Environmental : Operating temperature range 0 to 40
o
C
Shipping and storage temperature range -
20 to 55
o
C
Humidity range 0 to 90% rh, non-
condensing
Approvals : Designed to meet European CEN
approvals
APPLICATION CONTROL
Application Cycle Rate Link (LK1,LK2)
Boiler Heating 6 as supplied
Air Heating 6 cut LK1
Air Cooling* 3 cut LK1
Heatpump Heating 6 cut LK2
Heatpump Cooling* 3 cut LK2
Electric Heating 12 cut LK1 +LK2
Thermal Actuator 12 cut LK1+LK2
*Refer to the note on Cooling System Control on page 4
2


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