Lennox Aria Series User guide

Providing indoor climate comfort

ARIA

Application guide

ARIA-AGU-1209-E

ARIA-AGU-1209-E Page 1

Contents

Introduction ...................................................................................................................................... 2

Main components

Fan motor........................................................................................................................................ 3

Water coil ........................................................................................................................................ 3

Condensate drain tray..................................................................................................................... 3

Filter and access ............................................................................................................................. 4

Electric heater ................................................................................................................................. 4

Fresh air supply............................................................................................................................... 4

Characteristics ................................................................................................................................. 5

Codification....................................................................................................................................... 6

Airflow data....................................................................................................................................... 7

Acoustic data.................................................................................................................................... 9

Cooling performance data

Size 10 – 2 row coil......................................................................................................................... 11

Size 20 - 4 row coil.......................................................................................................................... 12

Size 30 – 4 row coil......................................................................................................................... 13

Size 40 – 4 row coil......................................................................................................................... 14

Heating performance data

Size 10 – 1 row coil......................................................................................................................... 15

Size 10 – 2 row coil......................................................................................................................... 16

Size 20 – 1 row coil......................................................................................................................... 17

Size 20 – 4 row coil......................................................................................................................... 18

Size 30 – 1 row coil......................................................................................................................... 19

Size 30 – 4 row coil......................................................................................................................... 20

Size 40 – 1 row coil......................................................................................................................... 21

Size 40 – 4 row coil......................................................................................................................... 22

Water coil pressure drop................................................................................................................. 20

Dimensional data

ARIA T10 - 2 row coil - Left hand configuration .............................................................................. 22

ARIA T20 - 4 row coil- Left hand configuration .............................................................................. 23

ARIA T30 - 4 row coil- Left hand configuration ............................................................................... 24

ARIA T40 - 4 row coil- Left hand configuration ............................................................................... 25

Control valves

2 way valve body and 3 ways with bypass ..................................................................................... 26

Proportional valve actuator ............................................................................................................. 26

On/Off type valve actuators ............................................................................................................ 26

Valve pressure drops ...................................................................................................................... 27

Flexible connections........................................................................................................................ 27

Specification guide .......................................................................................................................... 28

ARIA-AGU-1209-E Page 2

Introduction

The ARIA compact air conditioning module is available in two sizes for conditioning rooms from 12 to 50 m².

ARIA unit has been designed for very low noise performance in order to meet today’s new comfort

standards. This module is ideal for air conditioning commercial buildings and high specification residential

buildings. The overall height of 233 mm of allows an integration of very weak false ceiling voids met in

buildings in restoration or buildings of which the overall height is of primary importance

ARIA units supply and return air spigots positions may be adapted to specific building requirements. The

installation of this unit will be generally made with the top of the false ceiling of space conditioning, near the

supply and return air diffusers whose connection will be carried out by thermally and acoustically (if

necessary) insulate flexible ducts.

The available static pressure and staged fan speeds provide for multiple installation possibilities; simplified

and reduced maintenance, ease of access to all components, are essential attributes for an intelligent air

conditioning system.

In the standard version, ARIA is provided with a multi speed fan allowing the fan speed to be set

appropriately to the specific thermal loads in each space; the wall thermostat or user interface of a

communicating controller complements the system

ARIA units are available in all the configurations demanded by the market, i.e. 2 Pipe Change/Over, 2

Pipe/2Wire and 4 Pipe. The On/Off type water flow control valves associated with electronic controls, offer a

perfect control of the space temperature. The electric heaters used in the 2P/2W application, are equipped

as standard with a manual reset thermostat, reset by switching off the power, and thermo fusible link.

Physical and electrical data

The modular design of the ARIA adapted to "intelligent" buildings, allows it to be meet the air conditioning

requirements of medium sized rooms.

The very low height of the module, 233 mm overall, is made from 8/10 mm galvanised steel sheet internally

lined with 8 mm thick Melamine foam insulation protected by an aluminium film (Fire class M1).As an option,

ARIA unit can be covered with foam reinforced for decreased the noise level.

ARIA unit is equipped as standard with 4 suspension fixings incorporating rubber anti vibration mounts

specially designed to support the weight of the unit and absorb the frequencies generated.

ARIA-AGU-1209-E Page 3

Main components

Fan motor

The ARIA unit is equipped with a centrifugal forward curved single or double scroll

fan with double inlet, the fan will produce in the nominal conditions a static

pressure of 80 Pa under an air flow from 580 to 1250 m3/h (according the size of

the unit).

The multi-wound motor has 5 speeds.

Water coil

The right position of the coil provides a maximum heat exchanger surface for a minimum of space, thus

giving to ARIA range a very interesting ration height/performance.

Available for 2 pipe or 4 pipe applications, the finned block is common offering an increased heat exchanger

surface area.

The aluminium fins are mechanically bonded to 3/8‘’ diameter copper tubes. The inlet and outlet connections

are each provided with a 1/2‘’ G internal diameter threaded nut to facilitate the connection of the flat seal

valve connection. The purge screws are accessible from the outside and opened with a tool.

Following configurations avec available:

•2 pipes/Change over and 2 pipes/electric heater or

•4 pipes

2 T 4 T

Size 10 2 R or 3 R 2 R + 1

3 R + 1

Size 20 – 30 – 40 4 R 4 R + 1

Condensate drain tray

The condensate drain tray in aluminium is cast solid and common to the

coil and the valves outside the unit, thus avoiding any risk of possible

escapes. The external part is isolated on its lower part with foam PE

thickness 3 mm, to prevent of any risk of condensation. The tube of

evacuation of external diameter 16 mm makes it possible either to connect

piping directly or to connect a pump with condensate available in option.

ARIA-AGU-1209-E Page 4

Electric heater

The electric heater is of the bare wire resistive type installed in the fan

discharge air stream, assuring optimum coverage and maximum heat

exchange.

Available as standard with a capacity of 500, 800, 1200, 1500 or 3000

Watts, the 230 V/1/50 Hz power supply is provided directly from the

controller or via a relay and a fuse.

The heater is provided with 2 levels of safety:

•A manual reset thermostat, which is reset is by switching off the power, and has a trigger temperature

75°C; whilst this is off a PTC coefficient resistance with a separate supply prevents the automatic reset

of the coil whilst it remains under voltage. Restarting is done by coil supply voltage cut-off. This safety

thermostat protects the unit from over heating due to the absence of airflow.

•A fusible link, rated at temperature152 °C (± 16 °C). Replacement of heater assembly will be required

if this blows, after establishing the cause of the fault.

Filter and access

ARIA is available as standard with a G3 efficiency throwaway filter, 15 mm

thick, which is accessible from the underside of the unit. Fire classification M1.

As an option, ARIA unit can be provided with a G4 filter, 20 mm thick, with

access from the underside of the unit.

Fresh air suppy

ARIA units can be provided with a fresh air connection

spigot as an option allowing the each space to be supplied

with fresh air as required by regulations.

Each spigot can be fitted with a constant volume fresh air

controller to set the air flow to a predefined value. The air

volume is precisely controlled for variations in the system

duct pressure between 50 and 200 Pa.

The fresh air connection is located before the fan and heat

exchanger coil. The external diameter of the connection

spigot is either 99 mm or 124 mm depending upon the

type of controller insta (8.3 or 44.4 l/sec.).

The available controllers are :

Diameter 99 mm : 8.3 to 25 L/sec (30 to 90 m3/h – 10% / + 20%)

Diameter 124 mm: 20.8 to 44.4 L/sec (60 to 160 m3/h –10%/+ 20%)

The airflow of the 124 mm diameter fresh air controller can be easily modified on site by repositioning the

baffles inside the controller ; an instruction label for this procedure is located on the unit close to the spigot.

ARIA-AGU-1209-E Page 5

Characteristics

Physical and electrical data

ARIA Size 10 Size 20 Size 30 Size 40

Nominal air flow L/sec 139 130 222 228

Available static pressure Pa 50 50 50 50

Total cooling capacity (1) kW 1,94 3,11 4,77 5,68

Sensible cooling capacity (1) kW 1,64 2,4 3,74 4,26

Heating capacity (2) kW 2,36 3,52 5,44 6,16

Electrical supply Single phase – 50 Hz – 230V +/- 10%

Fan Forward action

simple wheel

Forward action

double wheel

Forward action

double wheel

Forward action

double wheel

Air flow at maximum speed L/sec 160 155 340 345

Available static pressure Pa 80 65 75 80

Fan number 1 1 2 2

Motor

Asynchronus type 230V-1-50

2 poles with internal overload protection, permanent capacitor

Winding insulation class B, varnish class F, IP20

Maximum absorbed power W 197 196 403 407

Nominal current A 0,90 0,90 1,85 1,90

Starting current A 1,1 1,1 2,2 2,3

Water coil

3/8 " copper tubes – Aluminium fins 2 rows / 1 pipe 4 rows / 2 pipes 4 rows / 3 pipes 4 rows / 4 pipes

Water content L 0,5 0,94 1,6 2,25

Operating pressure kPa 16 16 16 16

Test pressure kPa 24 24 24 24

Electric heater

Electrical supply "UDH" bare wire resistive type, single phase – 50 Hz – 230 V +/- 10%

Protections Manual reset thermostat (reset by switching off the power)

Trigger temperature 75°C thermo fusible link; breaks at 152 °C

500 500 500 500

800 800 800 800

1200 1200 1200 1200

1200 1500 1500 1500

1500 2 x 800 2 x 800

Power (+5% / -10%) not including fan W

1500 2 x 1500 2 x 1500

Minimum air flow L/sec 92 92 92 / fan 92 / fan

Air filter 95% gravimetric efficiency (G3 following EN 779) throwaway type

M1 fire rating, metal wire frame

Dimensions mm 415 x 225 x 10 415 x 225 x 10 715 x 225 x 10 1015 x 225 x 10

Weight and dimensions

Length x width x height (3) mm 886 x 428 x 233 886 x 428 x 233 886 x 728 x 233 886 x 1028 x 233

Weight Kg 16 16 28 35

(1) : Based on water entering temperature of 7 °C and a water temperature difference of 5 °C at nominal conditions, air at 27 °C dry

bulb, 50 % relative humidity

(2) : Based on water entering temperature of 50°C and a water temperature difference of 10° at nominal conditions, air at 20°C

(3) : Dimensions refer to a unit with return and supply spigot, without any condensate drain tray.

ARIA-AGU-1209-E Page 6

Codification

CODIFICATION

Colour Speed A B C D E F G H I J

RED 1 1 1 1 1 1 1

BLUE 2 2 2 2 2 2 2

WHITE 3 3 3 3 3 3 3

BROWN 4 4 4 4 4 4 4

Motor fan wiring

BLACK 5 5 5 5 5 5 5

NOTA : spigot configuration is defined when viewing ARIA unit looking in the direction of the air flow inside

the unit

Example :

ARIA 20 4R 1R SX

ARIA size 20

4 pipes 4 row heating coil 1 row cooling coil SX hydraulic connection (left side)

ARIA-AGU-1209-E Page 7

Air flow

ARIA – Size 10

ARIA– Size 20

Caractéristiques Aérauliques ARIA 20

V2 V3 V4 V5

100

120

0 100 200 300 400 500 600 700

Débit d'air (m3/h)

Pression Dispo (Pa)

Caractéristiques Aérauliques ARIA 10

V2 V3 V4 V5

100

120

0 100 200 300 400 500 600

Débit d'air (m3/h)

Pression Dispo (Pa)

Available static pressure (Pa)

Airflow (m

/h)

Airflow (m

/h)

Available static pressure (Pa)

ARIA-AGU-1209-E Page 8

ARIA – Size 30

Caractéristique Aéraulique ARIA 30

V1 V2 V3 V4 V5

100

120

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500

Débit d'air (m3/h)

Pression dispo (Pa)

ARIA – Size 40

Caractéristique Aéraulique ARIA 40

V1 V2 V3 V4 V5

100

120

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500

Débit d'air (m3/h)

Pression dispo (Pa)

Available static pressure (Pa)

Availalb e static pressure (Pa)

Airflow (m

/h)

Airflow (m

/h)

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