Ambirad LCSA Series Owner's manual

LCSA Series
ROOM SEALED GAS FIRED UNIT HEATERS
CI/SfB
56.83 X

Introduction
LCSA compact gas fired suspended warm
air heaters utilise a tubular heat exchanger
to provide a simple low cost heating
solution suitable for all standard industrial
and commercial heating applications.
LCSA fan-assisted balanced flue units
incorporate an integral flue gas exhaust fan
to induce combustion air mechanically from
outside the building. This same fan then
exhausts the products of combustion back
to the outdoor atmosphere. A single
balanced flue terminal provides a combined
air inlet and flue outlet.
Units are CE certified as either balanced
flue appliances or fan assisted flue units,
where combustion air is drawn from the
heated space.
Each unit is fitted as standard with a high
capacity axial fan and fully adjustable
curved blade horizontal discharge louvres.
Model Range
The LCSA Series gas fired heaters are
available in seven sizes, with heat outputs
ranging from 22kW to 97kW, for use on
natural gas or LPG (to special order).
Features & Benefits
•High thermal efficiency – above 91% nett,
resulting in lower running costs
•Multi-try ignition system for
enhanced reliability
•Dual limit stats for additional safety.
Specification
Heat Exchanger
Tubular aluminised steel heat exchanger
complete with multiple in-shot burners.
Air Distribution
A high capacity axial flow fan is fitted
to all units for improved air distribution.
An optional Economy Thermostat may be
fitted to heaters installed at high level to
recycle warm air down to working level
when the burners are switched off.
The fan operation is controlled by an integral
controller which delays fan start-up until the
heat exchanger has reached operating
temperature and continues to run after the
burner has switched off until all the useful
heat has been dissipated.
Enhanced Safety & Reliability
To ensure safe automatic operation, each
unit is fitted as standard with comprehensive
safety controls. Ignition is controlled and
monitored from a multi-try electronic
sequence controller and gas safety shut-off
valve. A differential pressure switch shuts off
the burners if either the flue or combustion air
supply is obstructed or the flue exhaust
fan fails. A limit thermostat protects the unit
from overheating and a second higher
limit thermostat is fitted to provide dual
safety control.
LCSA Series
ROOM SEALED GAS FIRED UNIT HEATERS

Installation
Units may be suspended or alternatively
mounted on a suitable non-combustible
support. Four integral suspension points
complete with an M10 female thread are
provided to each heater.
The balanced flue terminal provides both
the combustion air inlet and flue outlet
from a single building penetration. The
terminals are ordered separately from the
heaters to suit either a wall or roof outlet.
Additional flue and combustion air pipes may
be added, up to a maximum of nine metres of
flue pipe, plus nine metres of combustion air
pipe. (This reduces by 1.5 metres for every
90° bend fitted.)
To comply with CE approvals, balanced flue
appliances must be used with the
manufacturer’s balanced flue system.
The units are also certified for fan assisted
flue installations, where the combustion air
is to be drawn from within the heated
space; an alternative wall or roof terminal is
required for this application.
A single phase electrical supply is required
to each unit. This supply should not be
switched off except for maintenance.
Units must not be installed in atmospheres
containing highly flammable or explosive
vapours, combustible dust, halogenated
hydrocarbons or chlorinated vapours.
They are also unsuitable for areas where
contaminants may affect electrical motors
or connections.
Ease of Maintenance
All controls are housed behind a hinged
service door situated on the right hand side
when viewed from the front.
Certification
Units are designed and tested in
accordance with current European
CE Standards.
Applications
•Factories
•Greenhouses
•Warehouses
•Workshops
This symbol verifies that the product was
independently assessed and qualifies for
the ECA scheme, an upfront tax relief
enabling businesses that invest in
energy-saving equipment to claim 100%
first-year capital allowances against their
taxable profits.
ECA
Balanced flue wall outlet (type C12) eliminates
expensive roof opening and flashing
Balanced flue roof outlet (type C32)
Combustion air through wall, flue outlet
through the roof (type C52)
Separate combustion air and flue pipes
(type C12) for applications where wall thickness
exceeds 350mm. Flue and air intake to be offset
™
Heater positions and flue arrangements are indicative.
For heater and flue clearances please refer to the manufacturer’s guidelines.

Heat output kW 22 26 36 45 61 73 97
Gas consumption (1) Nat. gas G20 m3/h 2.5 3.0 4.2 5.2 7.0 8.4 11.2
Propane G31 kg/h 1.9 2.2 3.1 3.8 5.2 6.2 8.2
Gas connection (2) Rc ½” ½” ¾” ¾” ¾” ¾” ¾”
Model LCSA 20 LCSA 30 LCSA 35 LCSA 45 LCSA 60 LCSA 75 LCSA 100
TECHNICAL DATA
Air volume @ 15°C m3/h 2300 2900 4400 4600 6700 7200 8700
Temperature rise K 28 26 24 28 27 30 32
Approx. throw (3) m13172425303229
Noise level (free field @ 5 metres)(4) dB(A) 41 46 46 47 52 52 55
Noise level (typical installation @ 5 metres)(4) dB(A) 48 53 53 54 59 59 62
Recommended mounting height
to underside of heater (5) m 3 3 3-4 3-4 3-4 3-4 3.5-4
Total electrical rating kW 0.27 0.49 0.49 0.49 0.84 0.84 1.16
Net weight kg 62 66 92 97 112 124 175
AmbiRad is a registered trademark of AmbiRad Limited. Because of continuous product
innovation, AmbiRad reserves the right to change product specification without due notice.
AmbiRad Limited Fens Pool Avenue
Brierley Hill West Midlands DY5 1QA
United Kingdom
Telephone: [phone]
Facsimile: 01384 489707
Email: [email protected]
Website: www.ambirad.co.uk
Document reference number: GB/WA/064/1108
1 Natural gas G20 value 10.48kW/m3GCV, inlet gas pressure maximum 50mbar, minimum 17.5mbar.
Propane G31 Calorific value 14.0kW/kg GCV, inlet gas pressure maximum 50mbar, minimum 37mbar.
2 Not supply line size.
3 Throw is dependent on mounting height, building height, room temperature and louvre setting.
4 Noise levels are dependent on heater location and type of building.
5 Recommended height to undersize of heater for standard horizontal discharge units. Downturn nozzles are recommended for units installed at higher mounting heights. For
buildings over 4 metres high, air re-circulation fans are recommended in conjunction with the heaters.
(i) Electrical Connections
(ii) Access Panel
(iii) Suspension Points (M10 Female)
I
H
E
D
F
G
J
K
3/4"
Gas Connection
(i)
250 minC
30
(ii)
LN
19M
51
(iii)
150
150
150 A 600 min
B
DIMENSIONS
Cabinet width A 965 965 965 965 1298 1298 1298
Height B 567 567
845 845 845 845 954
Overall length C 907 914 927 927 942 942 1153
Side to gas inlet D87878282828282
Base to gas inlet E 106 106 175 175 175 175 180
Base to air inlet F 345 345 508 508 508 508 608
Base to flue outlet G 444 444 720 720 720 720 833
Side to air inlet H 122 122 134 134 135 135 212
Side to flue outlet I 221 221 211 211 212 212 212
Flue outlet J 100 100 130 130 130 130 130
Air inlet K 100 100 130 130 130 130 130
Back to suspension point L 123 123 123 123 123 123 128
Suspension centres M 611 611 611 611 942 942 942
Suspension centres N 406 406 406 406 406 406 550
Model LCSA 20 LCSA 30 LCSA 35 LCSA 45 LCSA 60 LCSA 75 LCSA 100