Installation Instructions for the ELQZ-2-504 Air Quality Sensor GOLD/COMPACT 1. General

Installation Instructions for the ELQZ-2-504 Air Quality Sensor GOLD/COMPACT 1. General
GB.ELQZ5042480.160408
dh = D
ØD
Installation Instructions for the ELQZ-2-504
Air Quality Sensor
GOLD/COMPACT
dh =
2xHxB
H+B
H
B
1. General
Examples of sources of disturbance
MIN 3xd h
GX
GX
The air quality sensor transmits a 0–10 V output signal
that is proportional to its working range of 500–1500
ppm. The output signal is linear with the CO2 content.
MIN 3xd h
GX
DAMPER
MIN 5xd h
MIN 3xd h
GX
GX
2. Installation
MIN 5xd h
GX
GX
SILENCER
COIL
MIN 3xd h
GX
GX
Demand control
MIN 5xd h
GX
FAN
1.2 Function
Set the air handling unit to DEMAND CONTROL under the
FAN REGULATION function menu (GOLD LP/COMPACT) or
under Functions/Flow (GOLD RX/PX/CX/SD, Version E/F).
Set the setpoint required as a percentage of the sensor’s
operating range. If a setpoint of 1000 ppm is required, for
instance, set the setpoint to 50%. Enter the setting under
the Flow/Pressure menu group (GOLD LP/COMPACT) or
under Functions/Flow (GOLD RX/PX/CX/SD, Version E/F).
See the Operating & maintenance instructions.
MIN 5xd h
MIN 3xd h
MIN 3xd h
The carbon dioxide content of the indoor air is an effective
indicator of how many occupants are in a room and the
degree of ventilation required to maintain the air quality
we need. Ventilation control based on CO2 measurements
guarantee the adequate supply of fresh air, and at the
same time keeps energy costs as low as possible.
MIN 5xd h
GX
BEND
GX
MIN 5xd h
GX
MIN 3xd h
BRANCH
ReCO2
Set the GOLD air handling unit to ”CO2” under the
ReCO2 function menu (GOLD LP/COMPACT) or under
Functions/ReCO2 (GOLD RX/PX/CX/SD, Version E/F).
Set the setpoint required as a percentage of the sensor’s
operating range. If a setpoint of 1000 ppm is required, for
instance, set the setpoint to 50%. Enter the setting under
the Flow/Pressure menu group (GOLD LP/COMPACT) or
under Functions/ReCO2 (GOLD RX/PX/CX/SD, Version E/F).
See the Operating & maintenance instructions.
MIN 3xd h
GX
MIN 3xd h
MIN 5xd h
GX
GX
GX
MIN 5xd h
ADAPTER
EXTRACT AIR
SUPPLY AIR
AIR HANDLING UNIT
2.2 Mounting
Install the sensor with the airflow direction arrow on its
cover pointing in the direction of airflow through the ducting. The sensor can be mounted on the side or top of the
duct for vertical or horizontal air flow.
If the ambient temperature varies radically, for example
outdoors or in cold attics, insulate the sensor to protect it
from the ambient air and prevent the formation of condensation inside the detector housing.
To ensure satisfactory function, the sensor should be
located at a distance, in the direction of airflow, that is
equivalent to at least 3 x the hydraulic diameter of the
duct upstream of the nearest source of disturbance in the
ducting (see the examples of sources of disturbance). If
it is located downstream of the nearest source of disturbance, its distance from this source should be equivalent
to at least 5 x the hydraulic diameter of the ducting.
Specifications are subject to alteration without notice.
Hydraulic diameter
CIRCULAR DUCT
dh = D
ØD
RECTANGULAR DUCT
dh =
2xHxB
H+B
H
B
MIN 3xd h
GX
MIN 5xd h
GX
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MIN 3xd h
GX
MIN 5xd h
GX
1
GB.ELQZ5042480.160408
Point 1
• Drill an opening in the duct. • 35 mm dia. opening for smoke detector without mounting bracket.
• 50 mm dia. opening for smoke detector with moun
ting bracket (see point 8).
Point 2
• Measure the ventilation duct.
• Cut the tube to an appropriate length, if needed.
• The tube should penetrate 90% of the duct diameter
into the duct.
• Insert the end plug.
IMPORTANT!
The arrow on the plastic cover must point in the same
direction as that of the air flowing through the duct.
Do not cut
this end!
End plug.
Point 3
• Slip the seal onto the tube.
• Insert the tube in the bottom of the sensor housing.
Point 5 Electrical installation.
• Select 0-10 V operation by putting the jumper in the
voltage position.
• Connect the cables as shown on the wiring diagram.
• Lock the tube in
position by means of
the stop screw.
Outp. 1
Point 4
• Mount the tube and the sensor on the duct.
• Secure the sensor housing at the 3 points indicated by the arrows.
20% 0%
Current
Voltage
Outp. 2
Jumper for a
0% or 20%
output signal
starting level
Current
Voltage
1
G+
24V AC/DC
2
G0
System earth
3
+ Out 1
CO2 (500-1500 ppm)
4
+ Out 2
Temperature (0-50°C)
5
M
Signal ground
6
C
Relay (option)
7
NO
Relay (option)
8
Jumper for selection
of output signal current or voltage
2
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Specifications are subject to alteration without notice.
GB.ELQZ5042480.160408
Point 6 Test of the detector
• Check the CO2 -detector by breathing on it.
Point 8
ELQZ-1-428-2-1 Mounting bracket for a circular duct or
an insulated rectangular duct.
The mounting bracket enables the detector to be installed
on a duct having a diameter as small as 100 mm.
The bracket is supplied completely flat.
Point 7
• Fitting of cover.
The bracket is easy to bend/form to fit on circular or flat
duct surfaces.
• Secure the cover.
Do not drill any holes in the cover for signs etc. Holes will
cause air leakages and seriously disturb the function of the
sensor.
Secure the legs
of the bracket to
the duct.
Opening: Ø
50 mm
Specifications are subject to alteration without notice.
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3
GB.ELQZ5042480.160408
Circular duct
Rubber seal
Insulated rectangular duct
Rubber seal
Point 9 Final inspection
Make sure that the arrow on the sensor cover points in the
direction of airflow.
Check that the cover and its gasket seals properly against
the base and that nothing is lodged in between them,
such as insulation.
4
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Specifications are subject to alteration without notice.
GB.ELQZ5042480.160408
2.3 Electrical Connections
The electrical connections should be wired by a qualified
electrician in accordance with local electrical safety regulations.
GOLD RX/PX/CX/SD, version E/F
Demand control or RECO2
Air quality sensor
GOLD RX/PX/CX/SD
IQlogic control unit
Jumper for a 0% or 20%
output signal starting level
Jumper for selection of
output signal current or
voltage
Outp. 2 Outp. 1
20% 0%
Current
Voltage
Current
Voltage
Specifications are subject to alteration without notice.
1
G+
1
2
G0
2
3
+ Out 1
3
4
+ Out 2
5
M
6
C
7
NO
8
1
31 G+
2
32 G0
3
18
19
Applicable to size 100/120 GOLD
units only:
If the total load on Terminals 31-32 is
higher than 16 VA, use Terminals 201
(G) and 202 (G0). Terminals 201-202
can be loaded with a total of max,
48 VA.
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5
GB.ELQZ5042480.160408
GOLD LP/COMPACT
Demand Control
Air quality sensor
GOLD LP/COMPACT
IQnomic control unit
Jumper for a 0% or 20% output signal starting level
Outp. 2
Jumper for selection of output signal current or voltage
Outp. 1
20% 0%
Current
Voltage
Current
Voltage
1
G+
1
2
G0
2
3
+ Out 1
3
4
+ Out 2
5
M
6
C
7
NO
1
9 G+
2
10 G0
35
37*
3
*Demand regulation (control) should
be selected for the one fan and slave
control should be selected to the other
fan if so desired.
8
3. Technical Data
4. Dimensions
Supply voltage
24 V AC ± 20%
Frequency
50/60 Hz
Power consumed
3W
Output signal
0–10 VDC
Measuring range
500–1500 ppm
Accuracy
± 1% of the measuring rang e
± 5% of the reading
Warm-up period< 1 min.
Response time
< 2 min.
Wiring nuts
for max. 1,5 mm²
Enclosure Class
IP 20
Operating temperature 0 till +50 °C
Storage temperature -20 till +70°C
Venturi tube length 600 mm.
(All dimensions in mm)
6
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Specifications are subject to alteration without notice.
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