NuAire NRG-ILTIM Instruction Manual

Constant Pressure
Variable Volume Inline Dampers
with adjustable Run on Timer
NRG-ILTIM/NRG-IL 125TIM/NRG-IL 150TIM/NRG-IL200TIM
Installation and Maintenance
Introduction
The four motorised inline damper models with run on
timers are designed for installation with Nuaire’s range
of Ecosmart Constant Pressure Variable Volume extract
fans.
The units incorporate a fixed damper to set the trickle
ventilation flow rate and a wax type 230v driven
actuator to increase the flow rate to boost on demand.
Units are rectangular in section, manufactured from
pre-galvanised steel and designed to match duct sizes of
100mm, 125mm, 150mm and 200mm.
Dimensions
Handling
Handle the units carefully to avoid damage and distortion
to moving parts.
Performance Detail
1
Unit A B C D E
NRG-ILTIM 50 200 100 120 120
NRG-IL125TIM 50 300 125 178 178
NRG-IL150TIM 50 300 150 178 178
NRG-IL200TIM 50 400 200 225 225
Dimensions in mm.
15. 05. 17. Leaflet Number 671264
Figure 1.
Figure 2. Resistance of NRG-ILTIM.
Figure 3. Resistance of NRG-IL125TIM.
Figure 4. Resistance of NRG-IL150TIM.
Figure 5. Resistance of NRG-IL200TIM.
Lw Position 1 Position 2 Position 3 Position 4
70Pa 25.1 21.6 - 23
100Pa 30 30.3 32.2 33.3
130Pa 33.5 32.8 36 37.1
150Pa 37.1 37.3 - 38.6
Acoustic information
The EMC Directive
2014/30/EU
The Low Voltage
directive
2014/35/EU
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk

2
Installation and Maintenance ECOSMART Constant Pressure Variable Volume Inline Dampers
Installation
The installation must be carried out by suitably qualified
and competent personnel in accordance with the appropriate
authority and in conformance with all statutory and
governing regulations i.e. lEE, CIBSE, COHSE, HVCA etc.
Mechanical installation
The unit can be mounted in any attitude giving due
consideration to the accessibility of the access door to
complete the electrical connection, set up the damper during
commissioning and future maintenance.
A full size access panel is fitted to one side to facilitate
electrical connection and damper setting.
The unit should be coupled directly to ductwork of matching
spigot diameter and installed behind a ceiling or in a service
void and remote from any areas from which it could be
subjected to water spray.
Electrical installation
The damper is activated by a 230V mains signal, this signal
can be derived from any switching source i.e. light switch,
mains PIR, mains rated thermostat, humidistat etc.
Offer the mains cable via the cable grommet provided
connecting Live (L), Neutral (N) and Earth (E) to the
appropriate terminals.
Setting the dampers
Trickle ventilation; minimum trickle rate is pre set by the
free area cut around the motorised damper. To increase the
trickle ventilation rate remove one of motorised damper
cheek plates (A1), to further increase the trickle rate remove
the second cheek plate (A2).
Boost ventilation rate is set by adjusting the setting screw
(B), with flow meter connected to duct work and motorised
damper activated (by switching on power to unit) adjust
the damper position whilst monitoring flow meter until
desired boost airflow rate is achieved.
Setting the dampers
The run-on timer is adjustable between 3 and 25 minutes.
This will hold the damper in the boost position for the pre-
set period when a switched live signal is removed from the
Ls terminal.
Check and adjust the setting as necessary using a small
screwdriver.
Maintenance
Maintenance intervals will vary according to the level of
airborne contaminant to which the unit is exposed; check
three months after commissioning and twelve monthly
thereafter.
There are no parts requiring lubrication.
Isolate the mains supply, remove the access cover and clean
out any dust deposits. Check the security of all components
and wire terminations - do not adjust the damper setting
screw.
To clean the dampers and internal chamber it will be
necessary to remove the unit from the system and access
through the inlet/outlet spigots, mark the position of the
setting screw (B) and ensure the position is set correctly
upon reinstatement.
There are no recommended spares, should the product
malfunction then it will require total replacement. Order
quoting all the details from the product rating plate.
3 Year Warranty
The 3 year warranty starts from the day of delivery and
includes parts and labour for the first year. The remaining 2
years covers replacement parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled,
or not installed, commissioned and maintained in
accordance with the details contained in this manual and
general good practice.
The product warranty applies to the UK mainland and in
accordance with Clause 14 of our Conditions of Sale.
Customers purchasing from outside of the UK should
contact Nuaire International Sales office for further details.
After Sales Enquiries
For technical assistance or further product information,
including spare parts and replacement components, please
contact the After Sales Department.
Telephone [phone]
Figure 7. Unit with access panel removed, showing electrical
connection and damper setting positions.
Figure 6. Third party switching to provide SL signal.
Technical or commercial considerations may, from time to time, make it necessary to alter the design, performance and
dimensions of equipment and the right is reserved to make such changes without prior notice.
15. 05. 17. Leaflet Number 671264
(A1) Cheek plate.
(A2) Cheek plate.