Horstmann AS2-RF Data Sheet

C-Stat 11-B and 17-B

Battery powered programmable room thermostat

Programmable room thermostats are widely recognised as
one of the best ways in which to control central heating. Our
C-Stat programmable room thermostats have a large display
and intuitive user interface, making them easy to set up and
use. C-Stat uses a sophisticated time proportional integral
(TPI) algorithm for accurate temperature control and energy
efficiency. Being battery powered, these models are suitable
for replacing most existing room thermostats.

C-Stat is ideal for combi boilers, extra heating zones or
upgrading older inefficient room thermostats.

Features

! Voltage free contacts
! Choice of 24 hour or 7 day versions
! Up to six target temperature settings per day
! Temperature Settings - 5°c to 30°c
! Menu driven programming via large back-lit display, with

prompts to aid the user

! Automatic daylight saving time adjustment
! Target temperature and actual room temperature

indication

! Temporary temperature override
! Holiday programme
! Optional high and low temperature limits
! Tamperproof security code
! Optional optimum start facility

Specification

C-Stat 11-B and 17-B

Reduced energy costs

Ÿ

Minimal boiler cycling and reduced flow

Ÿ

temperatures through use of sophisticated TPI
control algorithms
Runs on 2 standard AA type batteries

Ÿ

No need for additional wiring when replacing an

Ÿ

existing thermostat
Frost protection setting

Ÿ

Wireless and Mains versions are also available in this
range

POWER SUPPLY 2 x AA Batteries
CONTACT TYPE Micro-disconnection
WIRING CONFIGURATION Voltage free c/o

contacts (SPDT)

CONTACT VOLTAGE RATING 230V AC 50Hz (30V

dc)
CONTACT CURRENT RATING 8A (1A inductive)
TEMPERATURE
DIFFERENTIAL 0.5°c
TEMPERATURE ACCURACY +/- 0.5°c at 21°c
DESIGN STANDARDS BS EN 60730-2-9
DIMENSIONS 100 x 120 x 26.5mm
ENCLOSURE Flame retardant

thermoplastic
ENCLOSURE PROTECTION IP30
POLLUTION DEGREE Degree 2
INSULATION CLASS Double insulated
OPERATING TEMPERATURE
RANGE 0 °C to 40 °C
CLOCK 12 / 24 Hour with

Automatic BST / GMT

adjustment
SETTINGS PER DAY 6 target temperature

settings per day
MOUNTING Industry Standard 6

terminal plug in wall

plate

South Bristol Park, Roman Farm Road, Bristol BS4 1UP
t: [phone] | f: [phone] | e: [e-mail] | www.horstmann.co.uk

Horstmann is a trading name of Secure Controls (UK) Ltd., a wholly owned subsidiary of Secure Holdings PTE Ltd.
Registered office: Secure House, Moorside Road, Winnall Trading Estate, Winchester, Hampshire, SO23 7RX. Registered in England No. 457553
© January 2013: Secure Controls (UK) Ltd: All rights reserved. The company reserves the right to alter product specifications without notice.

Part No. P84880 Issue 2