Nuaire Group CO2RM User manual

1.0 Int oduction
These a e su face mounted oom
ca bon dioxide (CO2) senso s which
also inco po ate a tempe atu e
senso .
They are designed to sense the room
conditions for residentia or commercia
office bui dings. There are separate
0-10V output signa s for CO2and
temperature readings and are suitab e
as input signa s for fans and contro s
with the faci ity to accept a 0-10V
signa .
CO2RM – CO2& temperature sensor
requires SELV power supp y by others.
CO2RMPP - CO2& temperature sensor
supp ied with SELV ac power supp y.
If the app ication requires direct
compatibi ity with Nuaire Ecosmart
contro system then the contro
ES-CO2RM and ES-CO2RMPP may be
more appropriate. P ease refer to
separate iteratures for detai s.
2.0 Ratings
Sensing ranges: 0-2000ppm CO2and
0-50oC.
Output: 0-10V dc proportiona output,
maximum oad 1mA.
Current consumption: typica y 10mA
p us pu ses of 0.3A for 0.3s (every 15s).
Warm up time: <5 minutes.
CO2RMPP – the mains supp y to power
pack must be 230V 1~ 50Hz.
CO2RM – the SELV power supp y (by
others) must have output of 24V ac
(+/-20%) or 15-35V dc.
P ease note that a proprietary 24V ac
transformer wou d on y produce 24V at
maximum oad. Due to the ow current
absorbed by the sensor; these wou d be
running at very high output vo tage
(typica y >30V ac) and are therefore
not suitab e.
If in doubt – use the CO2RMPP to
ensure compatibi ity.
3.0 Installation
Insta ed environment: 0-50oC and up to
90% RH non-condensing.
The insta ation must be carried out by
competent personne in accordance with
a oca and nationa statutory re4.0
gu ation; i.e. IEE, COHSE, HVCA etc.
The unit must be insta ed indoors, away
from direct source of heat (e.g. radiator,
direct sun ight), any water spray or
steam generating source.
The mounting surface must be free from
vibrations.
Do not insta the sensor in environment
containing high eve of contaminants;
e.g. dust; corrosive gases; commercia
kitchens.
Insta the sensor at approximate y head
height or s ight y high y for best response
rate.
Use a sma screwdriver to push in the
c ip at the bottom of casing to open the
front cover. Remove the top ha f and
store it in a safe p ace.
Use screened cab e to connect the 0-10V
output signa s from the sensor to fan
or other recipient of these signa s and
ensure the screening is grounded at one
end on y (norma y the fan end).
Use the base of unit as a temp ate to
mark the fixing positions. Dri and insert
appropriate fasteners (e.g. Rawp ug)
into the ho es.
Feed the cab e from the SELV side of
power pack through the arge ho e of
the base together with the output cab e
from the sensor.
Wire the cab es into the termina b ock
as per wiring diagram on the reverse
side of this document.
CO2RM and CO2RMPP
CO2 Senso
Insta ation Guide
Figu e 1. Use a sma screwdriver to push
in the c ip at the bottom of casing to open
the front cover.
Nuai e Limited Western Industria Estate Caerphi y United Kingdom CF83 1NA
T: 029 2085 8400 F: 029 2085 8444 E: [e-mail] W: www.nuaire.co.uk
17. 06 15. Leaf et Number 671536
Figu e 2. Use the base of unit as a
temp ate to mark the fixing positions.
Unit Dimensions (mm)
Width 85, Height 100, Depth 26
The EMC Di ective
2004/108/EC
The Low Voltage
di ective
2006/95/EC
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6 5 4 3 2 1
SELV 24V ac+/- 20%
from power supply
(by others)
0- 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
6 5 4 3 2 1
SELV +15V TO +35V dc
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
0V from power supply
(by others)
6 5 4 3 2 1
3 pin plug
Connect to a suitable
230V 1-50Hz socket
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
PSU
GND CO2 T NC GND +V
GND CO2 T NC GND +V
GND CO2 T NC GND +V
Installation and Maintenance CO2RM and CO2RMPP CO2Sensor
Technica or commercia considerations may, from time to time, make it necessary to a ter the design, performance and
dimensions of equipment and the right is reserved to make such changes without prior notice.
17. 06 15. Leaf et Number 671536
6 5 4 3 2 1
SELV 24V ac+/- 20%
from power supply
(by others)
0- 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
6 5 4 3 2 1
SELV +15V TO +35V dc
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
0V from power supply
(by others)
6 5 4 3 2 1
3 pin plug
Connect to a suitable
230V 1-50Hz socket
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
PSU
GND CO2 T NC GND +V
GND CO2 T NC GND +V
GND CO2 T NC GND +V
6 5 4 3 2 1
SELV 24V ac+/- 20%
from power supply
(by others)
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
6 5 4 3 2 1
SELV +15V TO +35V dc
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
0V from power supply
(by others)
6 5 4 3 2 1
3 pin plug
Connect to a suitable
230V 1-50Hz socket
0 - 10V dc temperature output
0 - 10V dc CO2 output
0V (signal ground)
PSU
GND CO2 T NC GND +V
GND CO2 T NC GND +V
GND CO2 T NC GND +V
4.0 Wi ing
Important
Use screened cab e to connect the 0-10V output signa s from the sensor to fan or
other recipient of these signa s and ensure the screening is grounded at one end
on y (norma y the fan end).
Figu e 3. CO2RM - wiring to ac power supp y.
Figu e 4. CO2RM – wiring to a SELV dc power supp y.
Figu e 5. CO2RMPP – wiring to mains.
Note: do not connect any othe devices
to the powe supply.
5.0 Maintenance
This unit do not require any routine
maintenance. However, it is advisab e to
check the condition of the circuit board
and wiring to ensure it has not been
damaged by the insta ed conditions;
e.g. unforeseen condensation etc.
Remove any accumu ated dust with a
soft brush.
6.0 Wa anty
The 3 year warranty starts from the
date of de ivery and inc udes parts and
abour for the first year.
The abour e ement is subject to fu , free
and safe access to the equipment as
recommended by the CDM regu ations.
The remaining 2 years covers rep ace-
ment parts on y.
This warranty is conditiona on
adequate maintenance being undertaken.
7.0 Se vice Enqui ies
Nuaire can assist you in a aspects of
service. Our Technica Support
department wi be happy to provide any
assistance.
Telephone [phone]
Fax [phone]
All manuals and user guides at all-guides.com