Essential Install | HVAC
DID YOU KNOW: The optimum temperature level for sleep is between 65 and 72 °F
guarantee on the body and two years on components,
installers and users also have complete peace of mind.”
Vanguard is suitable for all electric heating
installations and storage heater replacements. Featuring
a contemporary design, these models use less wall space
than other aluminium electric radiators and are available
in power ratings from 600 to 1,800W.
Richard says Vanguard is perfect for whole home
heating and uses the latest in digital electronic thermostat
technology to offer controllable warmth, allowing
different temperatures to be set for different times of the
day. Its built-in thermostat is accurate to +/- 0.5 °C and
helps maximise energy use.
How To Effectively Control
Heating And Cooling
ThermoPad, made by
CoolAutomation, is
a standalone touch
screen wall controller
for air conditioning
and heating
When looking to control heating and air conditioning
cooling in a property, often the challenge is how to
control and interlock both, while using one room
temperature sensor, says Eli Sellam, product manager at
Tenways Engineering Services.
Eli says: “Advanced Inverter Controlled VRF/VRV
air conditioning systems have one refrigerant system
that serves multiple indoor fan coil units, while each
indoor unit can be controlled individually. The indoor
unit regulates the flow of refrigerant to the unit using
a Linear Expansion Valve. The Linear Expansion Valve
operation is normally a slow modulated process
which allows to achieve a stable temperature. The
Air Conditioning indoor unit PCB reads the Room
Temperature Thermistor (either Fan Coil Return Air
Thermistor or the Room Controller Thermistor) and will
then regulate the Refrigerant flow and command the
outdoor unit accordingly.”
Eil further explains: “By default, the heating and air
conditioning systems will be controlled from separate
thermistors which will often present different room
temperatures (location, sensitivity etc.).
“Many BMS systems are installed to control and
interlock the heating/cooling in high end properties.
However, as the air conditioning indoor unit will not
read the room temperature from the BMS room Sensor,
the BMS switches the indoor unit on or off based on the
reading from the BMS room temperature thermistor. This
normally results in poor room temperature balance.
“In addition, normally if the BMS communication
controller fails or communication is lost, the end yser will
not be able to control the climate systems.”
Eli says however that there is a solution: “ThermoPad,
made by CoolAutomation, is a standalone touch screen
wall controller for air conditioning and heating (underfloor,
radiators, electric, etc.) connecting directly to both. As the
ThermoPad connects directly to the air conditioning indoor
fan coil unit (replacing the AC wired controller), the air
conditioning system will read the room temperature from
the ThermoPad internal or remote room temperature sensor.
The same will apply to the heating, as the ThermoPad
connects directly to low voltage heating wiring centres
(such as Heatmiser UH1 or UH8-N). This interlocks the
air conditioning and heating in the room while both are
controlled from a single room temperature sensor.
“As each ThermoPad is a standalone direct-
connection controller, in case of automation/network
failing, the local room control and heating/cooling
interlock will not be affected.”
Eli adds: “ThermoPad controllers also include a
Modbus Communication protocol and can be daisy
chained to a CoolMasterNet. This will allow automation
systems to control both the cooling and heating from a
single screen driver. Furthermore, control will be available
from the CoolRemote App.
“Many advanced features are available using the
ThermoPad such as, second stage heating, freeze
protection, set back, boost heating (AC heat combined
with underfloor heating), automatic climate control
changeover (AC cooling/underfloor heating).”
More Information:
Chowmain +61 3 9028 6999, www.chowmainsoft.com
Electrorad +44 (0)113 274 6799,www.electrorad.co.uk
Haverland +44 (0)3303 651 940, www.haverland.co.uk
Intelligent Controls (UK) +44 (0)1342 717748,
www.intelligent-controls.co.uk
Ivory Egg +44 (0)1243 572700, www.ivoryegg.co.uk
Sensible Heat +44 (0)1273 475834, www.sensibleheat.co.uk
SensibleEssentialInstal_banners_02_Layout 1 18/09/2014 17:10 Page 4
Tenways Engineering Services +44 (0)208 203 1105,
www.tenways.co.uk
[email protected] www.sensibleheat.com
sensible heat
Advanced HVAC
controls for the home
June 2017 | 47