NuAire DRI-ECO-HEAT-HCS Installation, Maintenance And Operation page 4

Installation and Maintenance
For information only, refer to
manufacturer's specific instructions.
N
L
230V
Supply
L
N
Mains power Smoke/CO detector
with NO/NC contacts
IMPORTANT
In the event of conducted
RF interference between 80 to 127 MHz or transient
radiated interference between 80 to 87 MHz, the unit
may go into standby mode or the LED display may go
blank and fan stop temporarily, then go into reset mode
(LED flashing with the number of the speed setting) and
run at high speed.
The unit will return to normal after 2 minutes after the
RF interference has stopped.
10.0 CONTROL SETTINGS
10.1 Speed Settings
The unit has 5 air flow rate (speed) settings, 2-6. Switches to control
the speed settings and the display are located on the underside
of the diffuser. The following table shows the flow rates and their
corresponding speed settings.
As an example a one bedroom bungalow should be set to speed 2, and
a large 5 bedroom detached property would require speed 6.
Speed Settings
0
1
2
3
4
5
6
* At speed 1 the heater will not be enabled.
10.2 Selecting a Speed
When power to the unit is switched on the display will show the
temperature control option for 2 minutes. Once the start-up pattern
has completed you may now press the "up" or "down" switch to choose
the flow rate appropriate to the property you are installing the unit in.
nuaire.co.uk 029 2085 8400
DRIMASTER
230V
FAN UNIT
C NO NC
Air flow rate
(Litres/second)
Standby (0)
10*
20
30
40
50
60
10.3 Setting the Temperature Set Point
A temperature sensor is fitted to the outlet of the heater and will
control the heater output to maintain the set point. The set point
ranges between 5˚C (fully anti-clockwise) and 15˚C (fully clockwise)
and can be adjusted via the min/max commissioning pot located on the
ceiling vent diffuser.
10.4 Setting the Temperature Speed Control Option
When delivered, the unit is set to temperature setting 1 as a default.
To change this setting, switch the power to the unit on via the isolator
(supplied by others). The display in the ceiling vent will show the start-
up pattern for two minutes and the unit will being running at speed 6.
In this time you can change the temperature setting by pressing and
holding the "up" switch. The display will show a flashing value of 1 and
will increase every 4 seconds. Once you have reached the temperature
setting you require press and release the "down" button to store the
setting. The fan will now enter into its normal speed setting mode and a
speed can be selected at this point.
DriMaster-Eco
UP DOWN
MIN MAX
Option Temperature Control Description
1 At loft temperatures below 19°C the unit will operate on
(Default) "Normal Operation Mode".
At loft temperatures above 18°C but less than 24°C,
the unit will switch automatically to "Intelligent Heat
Recovery Mode".
At loft temperatures above 23°C the unit will switch
itself automatically to "Standby Mode".
2 At loft temperatures below 19°C the unit will operate on
"Normal Operation Mode".
At loft temperatures above 18°C but less than 31°C,
the unit will switch automatically to "Intelligent Heat
Recovery Mode".
At loft temperatures above 30°C the unit will switch
itself automatically to "Standby Mode".
3 This option removes the temperature sensing function
out of the unit.
The unit will operate continuously in "Normal Oper-
ation Mode" depending on the volume control setting
selected.
4 At loft temperatures below 16°C the unit will operate on
"Normal Operation Mode".
At loft temperatures above 15°C but less than 28°C,
the unit will switch automatically to "Heat Recovery
Mode".
At loft temperatures above 27°C the unit will switch
itself automatically to "Standby Mode".
5 Not applicable for the HEAT model.
23. 01. 18. Leaflet Number 671846
DRI-ECO-HEAT-HCS
DriMaster-Eco
UP DOWN
MIN MAX
4