Danfoss RET2000 B User manual

RET2000 B/M/MS
Electronic digital thermostat with LCD
Installation Guide
Danfoss Heating

RET2000
2
For a large print version of these instructions
please call Marketing on 0845 121 7400.
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other
printed material. All trademarks in this material are property of the respective companies.
Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Danfoss Heating 3
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Installation Instructions
Specications RET2000MS RET2000M RET2000B
Operating Voltage 230Vac ±15%, 50/60Hz
2.5 - 3 VDC
(2xAA
batteries)
Output 230Vac Volt free
Setting temp. range 5-30°C (cooling 16-36°C)
Operating temp. range 0-45°C
Switch rating 3A (1) at 230Vac
Switch type 1 x SPDT Type 1B
Battery lifetime N/A Min. 2 years
IP rating IP20
On/o control Yes
Chrono-proportional control Yes
Operating modes Heating/Cooling selectable
Construction EN 60730-2-9
Control pollution situation Degree 2
Rated impulse voltage 2.5kV
Ball pressure test 75°C
Dimensions (mm) H84 x W84 x D35
Software Classication A

RET2000
4
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Installation Instructions
ERP Class
The products represented within this document are classied
according to, and allow completion of, the Energy Related Product
(ErP) Directive System Package che and the ErP system data label.
ErP Labelling obligation is applicable from 26th September 2015.
ERP Class Product Function and ErP Descrip-
tion
Additional
eciency
gain
IV TPI Room Thermostat, for use with
on/o output heaters
An electronic room thermostat that
controls both thermostat cycle rate
and in-cycle on/o ratio of the heater
proportional to room temperature.
TPI control strategy reduces mean
water temperature, improves room
temperature control accuracy and
enhances system eciency.
2%
ErP
4
Product
Class

Danfoss Heating 5
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Mounting
Fix at a height of 1.5m
approx from the oor,
away from draughts
or heat sources such
as radiators, open res
or direct sunlight.
Please Note:
This product should only be installed by a qualied electrician or
competent heating installer and should be in accordance with the
current edition of the IEEE wiring regulations.

RET2000
6
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Wiring
123
COM ON OFF
RET2000B
P
O

Danfoss Heating 7
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Wiring
ELECTRONICS
NL
NL
23
ON OFF
230Vac
RET2000MS
ELECTRONICS
NL
NL
123
COM ON OFF
230Vac
RET2000M

RET2000
8
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DIL switch settings
Slide the DIL switches
to the settings required.
ON/OFF - output switches ON when below set temperature and OFF
when above. (Reverse when in cool mode)
CHRONO - energy saving feature which res the boiler at regular
intervals to maintain a set temperature, achieving a constant
ambient environment for the user.
o use 6 or 12 Cycles for radiator systems
o use 3 Cycles for underoor heating

Danfoss Heating 9
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DIL Switch Settings
CHRONO
6 CYCLES
3 CYCLES
HEATING
°C
KEYS UNLOCKED
ON/OFF
3/12 CYCLES
12 CYCLES
COOLING
°F
KEYS LOCKED
NO COMP DELAY
COMP DELAY 4 MINS
N/A
HEATING
°C
KEYS UNLOCKED
COMP DELAY
COMP DELAY 2 MINS
N/A
COOLING
°F
KEYS LOCKED
Heating selection
Cooling selection

RET2000
10
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Mounting