Smart Temp 770

Description

Selecting the correct thermostat for a project is often a difficult process. As the thermostat is the main focus of any heating or cooling system it must look good on the wall, be very easy to use and meet all the needs of the user and the equipment it is controlling. This may seem an impossible task for a single thermostat especially when you consider all the different control variations required (Heat pump or heat cool logic, single or multiple fan speed control etc) as well as cater for the individual needs of all thermostat users.

This thermostat is like the reptile that it takes its name from, the Chameleon thermostat adapts quickly to suit its surroundings – a single thermostat that can control almost any type of heating, cooling or air conditioning system as well as meet all the individual needs of the people using it.The installer is able to configure the Chameleon to control Heat pump systems, (with auxiliary or emergency heating if necessary), gas/oil heating systems with add on cooling, control high and low balance points as well as the number of heating and cooling stages needing precise control. It can even adapt to manage the number of fan speeds it must control.

The user can choose their Chameleon to be programmable or manual with single or multiple set points or the number programs as required, and then if they change their mind, the Chameleon will adapt without fuss to suit their new needs.

When larger projects are considered, or central control is necessary then the Chameleon has integrated Modbus communication. Every function and setting within the Chameleon can be viewed, locked, changed or edited from a centralised location as desired or automatically from a suitable building management system.

The Chameleon is simply a thermostat so advanced, so simple and so attractive it will be the last thermostat you should ever need to buy.

Specifications

Input Voltage: 24VAC 50/60 Htz  /‐ 15%
Current consumption:
15mA Standby (Backlight off)
70mA All relays and backlight on
Relay rating:  24VAC @ 1Amp maximum per relay
Operating Temperature:   0‐50C (32 to 122F)
Operating RH:   0‐95% (non condensing)
Storage Temperature:  0‐65C (32 to 150F)
Size: 113 x 103 x 23mm
Display Size: 74 x 55mm
Temperature Sensor(s):   10K NTC type 3
Memory type:  Non volatile – Settings do not require battery backup
Accuracy:  /‐ 0.3deg C @ 25 C. (77F)
Stage Delays:  Minimum temperature change   time method
Maximum stages controlled: 2 cool & 3 heat (Installer selectable)
Fan Speeds: controlled  1 or 3 (Installer selectable)
Timed upstage Delay:  5~90 minutes (installer adjustable)
Anti‐cycle Delay:  Off or 4 minutes
Maximum hourly cycles:  Unlimited, 30, 10 or 6. (Installer set)
Display resolution:   0.1 deg C (0.2F)
Control Range:   Off to 45c (113F)
Outside Air temp display range:  ‐8 ~  60c (17 ~ 140F)
Security:
– Pin protected Installer menu with key lock
– Heat & Cool set control limits
– Lithium backup battery for clock functions
Back light: Blue EL
Backlight life:  3,000 hours to half brightness
Optimised Start/Stop method:   Time to start vs temp differential method ‐ updating
Communications Protocol:
– Modbus RTU 4.8K 9.6K 19.2K No parity 1 data 1 stop
– Contact Smart Temp for objects list
Fan speeds:  Based on difference between room and set temp
Approvals:   FCC (Part 15) (pending), C‐tick
Battery type:  CR 1220 (Backs up clock only)
Battery life:  > 5years (10 years Maximum)