Aermec RTE240 user guide manual

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ROOF-TOP UNITS R410A - Manual selection, installation and maintenence

RTE

240-400

1102. 6180892_00

AERMEC S.p.A.

37040 Bevilacqua (VR) – Italy

Via Roma, 996

Tel. (+39) 0442 633111

www

.aermec. com

1115

DICHIARAZIONE DI CONFORMITA’

DECLARATION OF CONFORMITY DÉCLARATION DE CONFORMITÉ

KONFORMITÄTSERKLÄRUNG

Tipo macchina / Type of unit / Type de machine / Maschinentyp

Condizionatore d'aria tipo Roof-top, Roof-top air conditioning unit Unité de climatisation Roof-top, Autonome Klimaanlage

Modello / Model / Modèle / Modell

Matricola / Serial No / Numéro de série / Seriennummer

La macchina è conforme alle disposizioni contenute nelle seguenti direttive: / The unit complies with the provisions contained in the following directives: / La machine est conforme aux dispositions contenues dans les directives suivantes: / Das Gerät entspricht den Bestimmungen der folgenden Richtlinien enthaltenen:

2006/42/CE Direttiva Macchine / Machine Directive / Machine Direct ive / Mas ch inenr ic htlinie

2006/95/CE Direttiva Bassa Tensione / Low voltage Directive / Basse Tension / Niederspannungsrichtlinie

2004/108/CE Direttiva EMC / EMC Directive / EMC Directive / EMV-Richtlinie

97/23/CE Direttiva PED / PED Directive / PED Directive / PED- Ric htlinie

ed è stato sottoposto alla procedura di valutazione A1 con controlli dell’organismo Società Consortile

PASCAL a r.l. (n° 1115) via A. Scarsellini, 13 – 20161 Milano (certificato n° 20 del 10/02/2003) has been evaluated according to the A1 procedures with controls carried out by PASCAL (n°1115) company, address A. Scarsellini 13, 20126 Milan (certificate n°20 dated 10/02/2003) et a été vérifiée selon la procédure A1 par l’organism Società Consortile PASCAL a r.l. (n° 1115) via A. Scarsellini, 13 – 20161 Milano (certificat n° 20 date 10/02/2003) wurde überwacht nach Beobachtung Unternehmen PASCAL (n°1115), Adresse A. Scarsellini 13, 20126 Mailand (Zertifikat n°20 von 10/02/2003

Componente / Component / Élément / Komponente Modulo / Module / Module / Modul

Pressostato di alta pressione / Pressure switch / Pressostat / Druckschalter B + D

Valvola di sicurezza / Pressure relief valve / Valve de sécurité / Sicherheitsventil B + D

Compressore / Compressor / Compresseur / Kompressor D1

Ricevitore di liquido / Liquid receiver / Flüssigkeitssammler / Boutilles liquide A

Separatore di liquido / Suction accumulator / Flüssigkeitsabscheider / Boutilles anti-coup A

Filtro deidratatore / Filter / Filter / Filtres A

Rubinetti / Ball valve / kleinventile / Vanes A

Batteria di scambio termico / Coil / Register / Batterie A

La persona autorizzata a costituire il fascicolo tecnico è: / The person authorized to compile the technical file is: / La personne autorisée à constituer le dossier technique est: / Die Person berechtigt, die technischen Unterlagen zusammenzustellen:

Giampaolo Cardin via Luppia Alberi,170

Bevilacqua, 25/01/2011 Luigi Zucchi

Index

General norm 4

Units identification and description 5

Version cambination 6

Unit configuration 7

Description of components 10

Regulation system 11

Accessories 12

Technical data 14

Operating limits 20

Sound data 20

Cooling capacity and input power 21

Heating capacity and input power 22

Corrective coefficients for different flow rates 23

Total capacities for different relative humidities 23

Performance tables for water heating coils 24

Technical data generator Gxxx 25

List of pressure equipment - Directive PED 97/23 CE 26

Refrigerant circuits 26

Dimensions 28

Nominal dimensions 32

Refrigerant charge 32

Weights 33

Configurations 34

RTE with three-way mixing box 35

RTE with heat recovery unit 35

RTE with heat generators G72 - G92 - G150 kW 37

PR2 remote panel 38

Installing and using the unit 39

Norms covering the use of R410A gas 40

Hydraulic connections - Condensate drain pain 40

Connection aeraulic 41

Joining RTE sections 42

Improper use 43

Electrical wiring 43

Security 44

Unit maintenance 44

Monthly maintenence program 45

Diagnosis and fault solving 46

English

General norms

Roof-top units - RTE series-

This manual is an integral part of the documentation enclosed with the unit. It must be preserved for

future reference and must accompany the machine throughout its life. The manual defines the purpose for which the machine has been built and establishes its correct installation and the limits of its use.

• This manual provides all the

technical instructions and instructions for the installation of this unit and the main accident prevention regulations.

Read carefully and thoroughly all the information referred to in this manual. Pay particular attention to the usage instructions accompanied by the words "DANGER" or "WARNING" because, if not observed, they can cause damage to the machine and/or property and/or injury to people.

If any malfunctions are not included in this manual, contact the local After Sales Service immediately.

• AERMEC S.p.A. declines all liability

for any damage due to improper use of the machine or the partial or superficial reading of the information contained in this manual.

• Installation and maintenance

must be carried out by trained and qualified personnel, having the requirements laid down by law 46/90 and/or DPR 380/2001 for electric/electronic and air conditioning installations, with consequent registration at the local CHAMBER of COMMERCE. Otherwise AERMEC S.p.A. decline all responsibility regarding the safety of the product.

THE MANUFACTURER DECLINES ALL LIABILITY FOR DAMAGE TO THINGS OR INJURY TO PERSONS AND

ANIMALS CAUSED BY THE FAILURE TO OBSERVE THE INSTRUCTIONS AND STANDARDS IN THIS MANUAL.

Even though during the design phase of the RTE unit adequate assessment of the risks was made, pay ATTENTION to the pictograms on the machine that helps the reading the manual by drawing the reader's attention rapidly to the risk situations that cannot be avoided or sufficiently limited by using measures and technical means of protection.

GENERAL HAZARD SIGNAL

Carefully adhere to all the

indications next to the icon. Failure to comply with the instructions may generate hazardous situations with possible damage to the health of the operator and user in general.

DANGEROUS ELECTRICAL VOLTAGE SIGNAL

Carefully adhere to all the indications next to the icon. The signal indicates components of the unit or, in this manual, specifies actions that could generate electrically-related risks.

GENERAL PROHIBITION SIGNAL

Carefully adhere to all the indications next to the icon that limit actions in order to guarantee better operator safety.

IT IS PROHIBITED TO CLEAN, OIL AND GREASE,

repair or manually adjust parts in motion.

INFLAMMABLE MATERIAL.

MAIN WARRANTY CONDITIONS

• The warranty does not include

payment for damage due to the

incorrect installation of the unit by the installation engineer.

• The warranty does not include payment for damage due to the improper use of the unit by the user.

• The manufacturer does not consider itself liable for accidents to the user or the installer due to the incorrect installation or improper use of the unit.

The warranty is not valid when:

• the services and the repairs have been carried out by non-authorised personnel or companies;

• the unit has been repaired or modified in the past with non OEM spare parts;

• the unit has not been adequately maintained;

• if the instructions described in this manual have not been followed;

• if non-authorised modifications have been made.

Note: The Manufacturer reserves the right at all times to make any modification for the improvement of its product and is not obliged to add these modification to machines of previous manufacture that have already been delivered or are being built. The warranty conditions are any subject to the general sales conditions at the moment the contract is finalised.

Manual selection, installation and maintenance

Roof-top units - RTE series-

The RTE rooftop units are identified by means of a product identification code created by the selection program AERMECPro. A product identification code example is the following:

Units identification and description

RTE240F001600000000000

For further information, please refer to the selection program.

Unit description

The “ ROOFTOP “ units of the RTE series have been designed taking into account the precise requirements in the system necessary for treating large air volumes, typical of supermarket and hypermarket buildings and environments for shows, fairs and industrial uses in general. These units are usually situated on the roofs or anyway in the open air, offering these main advantages:

• because they are installed on the roof they do not take operational space away from the room;

• they offer the maximum modularity, therefore making it possible to differentiate the treatments in different volumes with different destination characteristics (food, clothing department etc.);

• they offer high levels of environmental comfort by controlling the exchange, filtering and humidification or dehumidification of the air in addition to the temperature;

• the environmental noise level is kept low due to the careful soundproofing of the machine.

Components

The RTE Rooftop units are all available in the cooling only version (RTE F) or in heat pump version (RTE H).

RTE units are equipped with an adhesive label that summarizes the main technical data such as model, heat output and cooling capacity, rated capacity of the air in recovery and extraction and electrical data. For any future reference and for all communication with the AERMEC SpA must indicate the number. In addition, each piece is accompanied by targhettta with weight and other information traceability. The rating plate and the plate of the weight of the package are applied outside the main rooftop, on the side panel near the electrical panel inspected the same. The plate of the weight of each package is applied externally on the panel additional inspections, or packaging.

The rooftop RTE units come complete with :

• condenser unit with 6 pole axial fans and scroll compressors;

• complete refrigeration circuit complete with thermostatic valve, filters, sight glass;

• synthetic undulated filter class G4 (EN779);

• direct expansion coil with aluminium condensate drain pan;

• radial supply fan with forward-curved blades with belt and variable pulley transmission;

• microprocessor control complete with sensors and actuators;

• electrical panel;

Sizes

The units in the RTE series are available in four sizes (240-260-300-350 -400) each of which with the possibility of standard, low noise L (excluding 350 and 400) or high temperature operation mode A (excluding 350 and 400). By aptly combining the several available options, it is possible to configure each model in such a way as to meet the specific of system requirements.

The RTE Series rooftop units are identified by a commercial speaker symbol generated directly from the breeding program. An example of an acronym speaker is as follows: RTE260FA0A000PD00P00000 For more information, refer to the selection program.

The table in fig.01 shows how to make up the commercial code with twenty-four fields, representative of the available options.

Available versions

N.B. the figures shown refer to the dimensional specifications on pages 27-29. STANDARD CONFIGURATION: consists of

the single block rooftop module with G4 flat filters (efficiency according to EN779), direct expansion coil (hot coil optional) (fig.1)

SMP : rooftop with 2-way mixing box rear

NOTE: (1) Damper without actuators and recirculation damper upon request.

(1)

exhaust SM2: rooftop with 2-way mixing box side/ bottom exhaust SM3: rooftop with 3-way mixing box with temperature free-cooling (fig. 7) FT7: rooftop with panel pre-filters G3 and rigid bag filters F7 (EN779) (fig.3) REC: rooftop with plate type heat recovery section and exhaust fan. The cross-flow heat recuperator allows the sensible heat recovery from the exhaust air with a winter operation efficiency over 50%. The two air flows (supply and exhaust) are completely separated and therefore all types of contamination are avoided. (fig.13) G72, G92, G150: rooftop with condensation heat generator with rated heating capacity of 72 kW condensation generator is fed by methane gas. The air is heated through the passage over the surface of the combustion chamber and heat exchanger pipes. The combustion chamber is fully made of AISI 430 stainless steel, while the surfaces in contact with the condensate (exchanger, fume hood) are made of AISI 304 L stainless steel to give outstanding resistance to corrosion. It is provided with an automatic reset safety thermostat (fig.6).

(fig.2)

(1)

(2)

, 92 kW or 150 kW. The hot air

Air heater model

G72 G92 G150

(fig.4)

RTE

Methane gas consumption G20 (15°C 1013 mbar)

2,3 - 8,3 mc/h

3,2 - 10,4 mc/h



4,7 - 16,4 mc/h

R410A



RTE



Manual selection, installation and maintenance

Version combinations

SM2-FT7: rooftop with 2-way mixing box, side/bottom exhaust and bag filters F7

(fig.5) G72-SMP: rooftop with 72kW heat

generator and 2-way mixing box rear exhaust (fig.8)

(1)(2)

G72-FT7: rooftop with 72 kW heat generator and bag filters F7 (fig.9) G92-SMP: rooftop with 92kW heat generator and 2-way mixing box rear exhaust (fig.8) G92-FT7: rooftop with 92 kW heat generator and bag filters F7 (fig.9) G150-SMP: rooftop with 150kW heat generator and 2-way mixing box rear exhaust (fig.8) G150-FT7: rooftop with 150 kW heat generator and bag filters F7 (fig.9) SM3-FT7: rooftop with 3-way mixing box and bag filters F7 (fig.10)

SM2-G72:

and

rooftop with 72kW heat generator

2-way

mixing box (fig.11)

(1)(2)

SM2-G92: rooftop with 92kW heat generator and 2-way mixing box (fig.11) SM2-G150: rooftop with 150kW heat generator and 2-way mixing box (fig.11) SM2-G72-FT7: rooftop with 72kW heat generator, 2-way mixing box and bag filters F7 (fig.12)

(1)(2)

SM2-G92-FT7: rooftop with 92kW heat generator, 2-way mixing box and bag filters F7 (fig.12)

(1)

SM2-G150-FT7: rooftop with 150kW heat generator, 2-way mixing box and bag filters F7 (fig.12)

(1)

REC-FT7: rooftop with static heat recovery unit and bag filters F7 (fig.14) SM3-G72: rooftop with 72kW heat generator and 3-way mixing box (fig.15) SM3-G92: rooftop with 92kW heat generator and 3-way mixing box (fig.15) SM3-G150: rooftop with 150kW heat generator and 3-way mixing box (fig.15)

(1)

(2)

(1)

(2)

Version combinations

SM3-G72-FT7: rooftop with 72kW heat

generator, 3-way mixing box and bag filters F7 (fig.16) SM3-G92-FT7: rooftop with 92kW heat generator, 3-way mixing box and bag filters F7 (fig.16) SM3-G150-FT7: rooftop with 150kW heat generator, 3-way mixing box and bag filters F7 (fig.16) REC-G72: rooftop with static heat recovery unit and 72kW heat generator (fig.17) REC-G92: rooftop with static heat recovery unit and 92kW heat generator (fig.17) REC-G150: rooftop with static heat recovery unit and 150kW heat generator

(fig.17)

REC-G72-FT7: rooftop with section with

heat recovery unit, 72kW heat generator and bag filters F7 (fig.18) REC-G92-FT7: rooftop with crossflow recovery unit, 92kW heat generator, and bag filters F7 (fig.18) REC-G150-FT7: rooftop with crossflow recovery unit, 150kW heat generator, and bag filters F7 (fig.18)

(1)()

NOTE:

(1) dampers without actuators (2) not available for sizes 260 - 300 - 350 - 400

e.g.: (REC+G72+FT7) is an example of version combination. To see the sizes, refer to the sizes chapter (page 25).

Roof-top units - RTE series-

(2)

Manual selection, installation and maintenance

Unit configuration

Roof-top units - RTE series-

Field 1, 2, 3,4 Field 5, 6, 7

Field 8 Versions

Field 9 Operation

Field 10 Power supply

Field 11 Versions and combinations (THE FIGURES INDICATED REFER TO THE SIZES FROM PAGE 25 TO 28)

RTE 240 260 300 350 400

F cooling only H heat pump

0 Standard L Low-noise operation (no 350 and 400) A High temperature (no 350 and 400)

O ° 3~ 400 V -50 Hz (standard) W TV2 3~ 230 V -50 Hz Z TV3 3~ 460 V -60 Hz

0 ° Basic configuration (Fig. 1) 1 SMP 2-way mixing box rear exhaust (Fig.2) (1) 2 FT7 Bag filters F7 (Fig. 3) A SM2 2-way mixing box side/bottom exhaust (Fig.4) (1) B SM2-FT7 2-way mixing box, side/bottom exhaust and bag filters (Fig.5) (1) C G72 Heat generator 72 kW (Fig. 6) (4)

D G92 Heat generator 92 kW (Fig. 6)

3 G150 Heat generator 150 kW (Fig. 6) (5)

E SM3 3-way mixing box with ventilator fan (Fig. 7 on dimensional indications)

F G72-SMP 72 kW heat generator and 2-way mixing box rear exhaust (fig.8) (4) G G92-SMP 92 kW heat generator and 2-way mixing box rear exhaust (Fig.8) 4 G150-SMP 150 kW heat generator and 2-way mixing box rear exhaust (Fig.8) (5) H G72-FT7 72 kW heat generator and bag filters F7 (Fig.9) (4) I G92-FT7 92 kW heat generator and bag filters F7 (Fig.9) 5 G150-FT7 150 kW heat generator and bag filters F7 (Fig.9) (5) J SM3-FT7 3-way mixing box with bag filters F7 (Fig.10) K SM2-G72 72kW heat generator and two-ways mixing box(Fig.11) (1)(4) L SM2-G92 2-way mixing box with 92kW heat generator (Fig.11) (1) 6 SM2-G150 2-way mixing box with 150kW heat generator (Fig.11) (1) (5) M SM2-G72-FT7: 2-way mixing box with 72kW N SM2-G92-FT7: 2-way mixing box with 92kW 7 SM2-G150-FT7: 2-way mixing box with 150kW P REC Q REC-FT7 R SM3-G72 3-way mixing box with S SM3-G92 3-way 8 SM3-G150 3-way T SM3-G72-FT7 3-way mixing box with U SM3-G92-FT7 3-way 9 SM3-G150-FT7 3-way V REC-G72 Y REC-G92 Z REC-G150 X REC-G72-FT7 W REC-G92-FT7 O REC-G150-FT7

Section with crossflow plate heat recuperator (Fig. 13) Section with crossflow plate heat recuperator and bag filters F7 (fig.14)

mixing box with 92kW heat generator (Fig.15) mixing box with 150W heat generator (Fig.15) (5)

mixing box with 92kW heat generator and bag filters F7 (Fig.16)

mixing box with 150kW heat generator and bag filters F7 (Fig.16) (5) Section with crossflow plate heat recuperator and 72kW heat generator (Fig.17) (4) Section with crossflow plate heat recuperator and 92kW heat generator (Fig.17) Section with crossflow plate heat recuperator and 150kW heat generator (Fig.17) (5) Section with crossflow plate heat recuperator, 72kW heat generator, and bag filters F7(fig.18)(4) Section with crossflow plate heat recuperator Section with crossflow plate heat recuperator

heat generator and bag filters F7(Fig.12) heat generator and bag filters F7 (Fig.12)

heat generator and bag filters F7 (Fig.12)

72kW heat generator (Fig.15)

72kW heat generator and bag filters F7 (Fig.16)

, 92kW heat generator, and bag filters F7(fig.18) , 150kW heat generator, and bag filters F7(fig.18) (5)

(4)

(1)(4)

(1)

(1) (5)

(4)

(1) = Dampers without actuators (2) = The right or left direction refers to the direction of air flow inside the air handling sections (3) = The coil to water connection side is always on the left (4) = 72 kW Generator only available on RTE 240 (5) = No RTE 240 model

Manual selection, installation and maintenance

Roof-top units - RTE series-

Field 12

Field 13 Heating coil accessory

Field 14 Outside coil treatment accessory

Field 15 Air intake accessory

Field 16 Air supply accessory

Filter pressure switch /coil protection grille accessory 0 ° No accessory of the PF/GP type 2 BP Heat recovery unit with by-pass (option only valid if field 10 = 3 PF Filter pressure switch 4 GP Condenser protection grille 5 PF+GP

6 BP+PF (option only valid if field 10 = 7 BP+GP (option only valid if field 10 = P, Q, V, Y, Z, X, W, O) 8 BP+PF+GP (option only valid if field 10 = P, Q, V, Y, Z, X, W, O)

0 ° No battery W BTR Two-row hot-water heating coil with three-way modulating valve (3) E BRE 12 Two stages electric heating coil (12 kW) F BRE 18 Two stages electric heating coil (18 kW) G BRE 24 Two stages electric heating coil (24 kW) H BRE 36 Two stages electric heating coil (36 kW)

0 ° Coils with copper pipes and aluminium fins A BSP Coil with copper pipes and pre-painted aluminium fins B BSR Coil with copper pipes and copper fins C BSS Coil with copper pipes and tin-plated copper fins

0 ° Std. rear return air intake. If there is a return fan, the head is up to 150 Pa

(value always 0 when field

M T1 Right side return air intake, rear fresh air intake

(option only valid if field 10 = A, B, K, L, M, N, 6, 7) (2)

N T2 Left side return air intake, rear fresh air intake

(option only valid if field 10 = A, B, K, L, M, N, 6, 7) (2)

P T3 Rear return and fresh air intake

(option only valid if field 10 = A, B, K, L, M, N, 6, 7) (2)

Q T4 Bottom return air intake, rear fresh air intake

(option only valid if field 10 = A, B, K, L, M, N, 6, 7) (2)

T T5 Right side return air intake, left side fresh air intake

(option only valid if field 10 = A, B, K, L, M, N, 6, 7) (2)

U T6 Left side return air intake, left side fresh air intake

(option only valid if field 10 = A, B, K, L, M, N,) (2)

R AI Bottom air intake, return fan available pressure up to 150 Pa

(option valid only if field 10 =E, J, R, S, T, U, 8, 9)

S AS Top air intake, return fan available pressure up to 150 Pa

(option valid only if field

W PA4 Rear air intake, return fan available pressure up to 300 Pa

(option valid only if

Z Al+PA4 Bottom air intake, return fan available pressure up to 300 Pa

(option valid only if field

V As+PA4 Top air intake, return fan available pressure up to 300 Pa

(option valid only if field

0 ° Bottom air supply, supply fan available pressure up to 200 Pa (standard) D MA Top air supply, supply fan available pressure up to 200 Pa E MS Left side air supply, supply fan available pressure up to 200 Pa (2) F MD Right side air supply, supply fan available pressure up to 200 Pa (2) G PM4 Bottom air supply, supply fan available pressure up to 400 Pa H MA+PM4 Top air supply, supply fan available pressure up to 400 Pa I MS+PM4 Left side air supply, supply fan available pressure up to 400 Pa (2) L MD+PM4 Right side air supply, supply fan available pressure up to 400 Pa (2)

P, Q, V, Y, Z, X, W, O)

10 = 0, 1, 2, C, D, F, G, H, I, P, Q, V, Y, X, W)

10 =E, J, R, S, T, U, 8, 9)

field 10 = E, J, P, Q, R, S, T, U, V, Y, X, W, O)

10 =E, J, R, S, T, U, 8, 9)

(1) = Dampers without actuators (2) = The right or left direction refers to the direction of air flow inside the air handling sections (3) = The coil to water connection side is always on the left (4) = 72 kW heat generator only available on RTE 240 (5) = No RTE 240 model

Manual selection, installation and maintenance

Field 17 Refrigeration circuit accessories

0 ° No refrigeration circuit accessory 1 DCPR Low temperature device (external temperature down to - 20 °C) (standard on the low noise operation

2 TP Pressure transducers (standard in the heat pump version) 3 RUB Discharge and Liquid shut-off valves (for cooling only version) 4 DCPR+TP 5 DCPR+RUB 6 TP+RUB 7 DCPR+TP+RUB

Field 18 Enthalpy control accessories

0 ° No enthalpy control accessory A PUC Humidification control provision B FCH Enthalpic Freecooling C DP Dehumidification and re-heating management D PUC+FCH E PUC+DP F FCH+DP G PUC+FCH+DP

Field 19 Electronic accessories

0 ° No electronic accessory P PR2 Remote panel S SSV RS485 interface card for supervision Q SQA VOC air quality sensor R PR2+SSV T PR2+SQA U SSV+SQA (option only valid if field 10 = E, J, O, P, Q, R, S, T, U, V, Y, Z, W, 8, 9) V PR2+SSV+SQA (option only valid if field 10 = E, J, O, P, Q, R, S, T, U, V, Y, Z, W, 8, 9)

Field 20 Damper actuator accessory

0 ° Modulating damper actuator series for versions with SM3 and REC

1 SCSR Return air damper for SMP mixing box (if field 10 = 1, 4, F, G) 2 SCS2 Return air damper for SM2 mixing box (if field 10 = A, B, K, L, 6, M, N, 7) 3 SCM3 Modulating spring return actuator for versions with 3-way mixing box and heat recovery unit (that

4 SRP Return air damper for SMP mixing box and modulating damper actuator (if field 10 = 1, 4, F, G) 5 SR2 Return air damper for SM2 mixing box and modulating damper actuator (if field 10 = A, B, K, L, 6,

6 SCMP Return air damper for SMP mixing box and modulating spring return actuator (if field 10 = 1, 4, F,

7 SCM2 Return air damper for SM2 mixing box, modulating damper actuator on fresh air and modulating

Field 21 Shock absorbing accessory

0 ° No shock absorbers 3 VT3 Rubber shock absorbers for units in basic version 5 VT5 Rubber shock absorbers for units from the 5m to the 7.1m 7 VT7 Rubber shock absorbers for units of over the 7.1m

Field 22 Inspection side

0 SX Left-hand supply inspection side (default) 1 DX Right-hand supply inspection side (if field 15 = 0, D, F, G, H, L)

Field 23 Condensate drain side

0 SX Left-hand condensate drain side (standard) D DX Right-hand condensate drain side

Field 24 Special requirements

0 All according to catalogue S Unit with at least one special requirement

Roof-top units - RTE series-

units)

(option only valid if field 10 = E, J, O, P, Q, R, S, T, U, V, Y, Z, W, 8, 9)

(if field 10 = E, J, R, S, T, U, V, Y, X, W); no actuators in all the other case

contain the code SM3 or REC in the version)

M, N, 7)

spring damper actuator on return air (if field 10 = A, B, K, L, 6, M, N, 7)

(if field 15 = 0, D, F, G, H, L)

(1) = Dampers without actuators (2) = The right or left direction refers to the direction of air flow inside the air handling sections (3) = The water coil connection side is always on the left (4) = 72 kW Generator only available on RTE 240 (5) = No RTE 240 model

Manual selection, installation and maintenance

Roof-top units - RTE series-

Refrigeration

Description of components

circuit

Compressors

Scroll-type hermetic compressors with crankcase heater provided as a standard in the heat pump version (and in the only coolung version, if provided with DCPR accessory) Provided the unit is under voltage the heating element is automatically switches on when the unit stops.

Internal heat exchanger Made with copper pipes and aluminium ﬁ ns locked into place through mechanical expansion of the pipes. The coil is of the high efﬁ ciency type; grooved pipes and corrugated ﬁ ns.

External heat exchanger Made with copper pipes and aluminium ﬁ ns locked into place through mechanical expansion of the pipes. The coil is of the high efﬁ ciency type; grooved or smooth pipes according to the size.

Liquid receiver (only for heat pump version)

Safety valve

Set to 30 bar, it protects the circuit against excessive pressures.

Check valve (only for heat pump version)

The valve allows the refrigerant to ﬂ ow in one direction only.

Frame and fans

Thermostatic valve

The valve with external equaliser on the evaporator outlet, modulates the gas ﬂ ow to the evaporator according to the heat load in such a way as to assure a sufﬁ cient degree of overheating at the intake gas.

Drier-ﬁ lter

Made of ceramics and hygroscopic material it traps impurities and any traces of humidity in the cooling circuit.

Sight glass

To check the refrigerating gas charge and verify presence of humidity in the cooling circuit.

Solenoid valve

Switches on after the compressor has stopped, interrupting the migration of the liquid refrigeration gas to the evaporator.

Liquid and discharge shut-off valves (accessory only available for the cooling only versions).

They stop the refrigerant ﬂ ow in case of extraordinary maintenance.

4-way valve (only for heat pump version)

To control the refrigerant ﬂ ow for the summer/ winter mode changeover and to operate the defrosting cycles.

Solenoid by-pass valve (only for heat pump version)

The valve by-passes the thermostatic valve during the defrosting cycles.

Condensing section

It is provided with statically and dynamically balanced axial fans. The fans are provided of protection grilles while the electric motors are protected by means of magnetothermal switches.

Air handling section

It is provided with a double intake radial fan with forward curved blades for better performance and quietness. The fan is driven by a three phases electric motor with belts and adjustable pulleys.

Structure

The air handling section is made of 50 mm thick sandwich panels with type of construction for the air treatment side is: external peraluman sandwich-type panelling and galvanised steel 50 mm thick inside with injected polyurethane insulation (thickness 42 kg/m3). Accessible panels are provided with proper knobs, while the others are set through screws.

Control and safety components

Door lock switch

For safety the electrical panel can only be accessed by cutting off the power using the opening lever on the panel itself. This lever can be locked in place using one or more padlocks, during maintenance in order to

prevent the machine being powered up accidentally.

Control keyboard and display on the machine

This allows the complete control of the unit. For a detailed description refer to the user manual.

Electrical panel

Contains the power section and the management of the controls and safety devices. This conforms with standard CEI 60204-1, and electromagnetic compatibility directives EMC 89/336/EEC and 92/31/EEC.

Antifreeze sensor (only with BTR)

When the water temperature is below +5°C, the dedicated software, in the control card, completely opens the three-way valve, thereby circulating hot water through the digital output signal.

Refrigerator circuit pressure switches

These are placed one on the high-pressure side and one on the low pressure side of the refrigeration circuit. They stop compressor from operating in the case of abnormal operating pressures.

Flow switch

This has the task of ensuring that air circulates in the air handling section. If there is no air, it switches off the unit.

High and low pressure transducers (standard on the heat pump version)

Placed on the high- and low-pressure sides of the refrigerator circuit making it possible to show the value of the pressure on the display. Optional on the cooling only versions.

Manual selection, installation and maintenance

The architecture of the microprocessor control (fig. 02) provides for:

• a BASE CARD with microprocessor dedicated to the execution of the control program, provided with display, keyboard and LED to allow for the programming of the set-points and the basic user operations (on/off, display of checked values, optional print-out ).

Roof-top units - RTE series-

Regulation system

• the program is written on the

EPROM while the set-points set are memorised permanently on EPROM, so that they can be kept even when there is no power (without the need for a support battery).

It is possible to connect the basic

card with the pLAN local network (pCO Local Area Network) consisting of different basic cards and terminals. Each board can exchange data (any parameter, whether digital or analogue, depending on the program) at high transmission speeds. Up to sixteen units can be connected (between cards and terminals) for a maximum of 5 rooftops in such a way as to share the information quickly. The connection through the serial supervision/remote assistance line in accordance with the RS485 standard, is made through optional serial cards and MODBUS communication protocol.

RT- 5.1

RT+5.1

GND5.2

-XTXR

+XTXR

DNG

NALT

DNG

82 2.3

84 2.3

89 4.4

86 2.5

82 2.6

87 2.6

88 3.4

82 3.4

1ON

2ON

3ON

4ON

5ON

5 1 C

9 J

01J

5 C

11J

CLOCK CARD

built-in terminal

SERIAL CARD

2 J

3 J

Thanks to its versatile software, the

user terminal permits:

• to modify the basic set points at any moment which may be protected with a password

• the display of the detected alarms and their acoustic detection by means of a beeper

• the indication of the active functions by means of leds.

• the display of all the measured parameters.

Manual selection, installation and maintenance

CNYS

5.3 1

5.3 0

5.3 1

5.4 10

DNG

5.4 12

5.4 13

5.5 14

5.5 9

5.5 11

FERV5

CDV42+

5.6 15

3.7 6

5.2 8

5.2 0

4.7 46

3DI

2DI

4.7 44

2.7 35

4.6 43

I5DI

2.8 36

3.5 45

4.8 30

1CDI

fig.02

DCPR - Pressure switch control device

Extends the operating range of the rooftop, both in the summer cycle (minimum outside air temperature to 10 ° C), and in the winter with heat pump (maximum temperature of outside air to 25 ° C). It also makes the operation very quiet at part load. An electronic control varies the speed of the fans depending on the condensing condensing pressure, which has a special transducer, ensuring proper supply to the thermostatic valve.

TP - Pressure transducers (standard on heat pumps)

These show the high and low pressures on a display, manage the compressor and valve activities during defrosting and inhibit their operation when the pressure exceeds the set limits.

Discharge and liquid shut-off valves (only for cooling only version).

Hermetic taps with manual closing on the compressor supply on the circuit liquid side.

GP - Protection grills

They protect the external coils from accidental blows and hail.

T1 - Air intake on the right side (only on the SM2)

See page. 30.

T2 - Air intake on the left side (only on the SM2)

See page. 30.

T3 - Rear air intake (only on the SM2)

See page. 30.

T4 - Bottom air intake (only on the SM2)

See page. 30.

AI - Bottom intake (only on the SM3)

See page. 31.

PA4 - Rear air intake

Return fan available pressure up to 300 Pa for nominal flow rate.

MA - Upper air supply

Top air supply, supply fan available pressure up to 200 Pa at the nominal air flowrate.

MS - Left air supply

Left air supply, supply fan available pressure up to 200 Pa at the nominal air flowrate.

MD - Right air supply

Right air supply, supply fan available pressure up to 200 Pa at the nominal air flowrate.

PM4 - Supply fan available pressure up to 400 Pa

Supply fan available pressure up to 400 Pa for rated flow rate.

Accessories

BTR- Two-row heating coil

Two-row hot water coil with three way modulating valve. These can only be managed in the post-heating phase with the DP accessory.

BRE- Electrical heating coil

Two-stage heating electric heating battery provided with double safety thermostat, one automatic resetting and the other manual resetting. The capacities proposed are 36, 48, 60 and 72 kW (or in the order phase indicated the capacity required). These can only be managed in the post-heating phase with the DP accessory. PUC- Provision for humidification control. ON/OFF Contact (normally open) for humidification enabling. The unit in this case has humidity sensor situated on the ambient air recovery. A humidity valve is also supplied to be positioned down line from the humidification section.

DP - Kit for the management of the humidification and post heating

The control will force the operation of the compressors to dehumidify the air up to the humidity set point set. If there is a water or electric coil, it will also be possible to manage the post heating. The PUC accessory can be combined (humidification contact).

SCS - Damper actuators for two-way versions

Modulating actuators fitted directly on the exhaust air damper and external damper for the management of the air change.

SCSM damper actuators with spring return for 2-damper-valve versions

Actuators with spring return fitted directly on the recovery air dampers and outside air for the management of the air change, in case of blackout completely close the outside air damper and open the fresh air damper completely.

SCM3 damper actuators with spring return for 3-damper-valve versions

Actuators with spring return mounted directly on the dampers for the management of the freecooling to replace the standard ones ; in case of blackout they close the outside air dampers completely and open the fresh air dampers completely.

FCH - Enthalpic Free-cooling

Only with three damper mixing box. It manages the outside air flow and recovery referring to their enthalpic values

Roof-top units - RTE series-

PR2 - Remote panel

This enables rooftop control operations to be carried out at a distance.

SSV - RS485 Serial interface for supervision

Serial card necessary for the supervision system interface. SQA - Air quality sensor This analyses the quality of the air on the basis of a mixed gas SnO2 VOC sensor by assessing the contamination by polluting gases. The presence of the sensor combined with the rooftop control permits:

- the setting of a sensitivity threshold depending on the maximum contamination of the air predicted.

- the ventilation of the rooms only when necessary so as to ensure energy saving.

TV2 - Power voltage 3~230V - 50HZ. TV3 - Power voltage 3~ 460V - 60HZ. VTR (3 - 5 - 7)- Shock absorbers

Rubber antivibration dampers. Select the VTR model from the accessories table (see page 13).

PF - Filter dirtying pressure switch BSP - Special batteries

Condensing coil with copper pipes and prepainted aluminium fins.

BSR - Special coils

Condensing coil with copper pipes and copper fins.

BSS - Special coils

Condensing coil with copper pipes and tin plated copper fins.

Manual selection, installation and maintenance

Available accessories table

Roof-top units - RTE series-

Size

Version Operation DCPR TP RUB GP T1 (1) T2 (1) T3 T4 AI PA4 MA MS (1) MD (1) PM4 BTR BRE PUC DP SCS SCSM SCM3 FCH PR2 SSV SQA TV2 TV3 VTR3 (for basic version units) VTR5 (for units from 5 to 7.1 m) VTR7 (for units over 7.1 m) PF BSP BSR BSS

cooling only (F) hot pump (H)

std L (no 350 and 400) A (no 350 and 400) std L (no 350 and 400) A (no 350 and 400)

o•oo•o

ooo•••

ooo- - -

oooooo

240 - 260 - 300 - 350 - 400

BSR oooooo BSS

oooooo

1) = The right or left direction refers to the direction of air flow inside the air handling sections

• = standard o = optional

- = not available

Hot water coil data (BTR accessory)

RTE Size 240 260 300 350 400 Heating capacity (kW) 400 179 200 213 219 Rows (number) 22222

Hot water coil performance referred to : inlet air 20°C; water 80/70 °C; N.B.: for data about the water flowrate, water side pressure drops and performances with conditions different from the standard please see page. 24

Electrical coil data (BRE accessory)

RTE Size 240 260 300 350 400 Heating capacity (kW) 12 18 24 36 12 18 24 36 12 18 24 36 12 18 24 36 12 18 24 36 Number of stages 22222

Manual selection, installation and maintenance

Roof-top units - RTE series-

Cooling only F (standard)

RTE

Cooling capacity F kW 77.1 88.6 103.0 129.4 142.5

Sensible cooling capacity F kW 50.1 61.2 67.0 77.7 92.6

Total input power F kW 20.7 25.3 31.8 39.7 44.5

Version 240 260 300 350 400

Energy indices

E.E.R. *

F 4.49 4.30 4.01 3.91 3.85

Condensing unit section

Compressors

Type Number / circuit Capacity step control Compressor input power L.R.A. (Locked Rotor Amps)

F scroll F n° 2/2 2/2 2/2 2/2 2/2 F % 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 F kW 16.04 18.87 23.56 30.13 33.95 F A 350 135 175 215 215

Axial Fans

Number / Input power Air flow rate

F n°/kW 4x0.53 4x0.53 4x0.53 4x0.56 4x0.56 Fm

/h 32000 29000 28000 40000 36000

Air handling section

Evaporator

Number of rows

Fn°44444

Fan

Type Nominal air flow rate Minimum air flow rate Maximum air flow rate Number Total installed power Available pressure with std motor

Air filters

Thickness Efficiency

Operating limits

Max. external air temperature

Base version sizes

Height Width Lenght Weight

F Radial, forward curved blades Fm Fm Fm Fn°11111 F kW 2.58 4.37 6.13 7.34 8.35 F Pa 200 200 200 200 200

Fmm5050505050 F EN779 G4 G4 G4 G4 G4

F°C4343434343

F F F F

/h 40000 17000 20000 22000 23000

/h 10400 14800 17400 19100 19550

/h 14100 20000 23500 23500 23500

mm mm mm

1.830 1.830 1.830 1.830 1.830

2.166 2.166 2.166 2.166 2.166

3.290 3.290 3.290 3.290 3.290

1.300 1.390 1.480 1.565 1.645

Performances referring to: Room air 27 °C / 50% r.h. External air 35 °C * Energy indices referring to cooling circuit

Manual selection, installation and maintenance

Roof-top units - RTE series-

Heat pump H (standard)

RTE

Cooling capacity H kW 76.3 87.7 104.9 128.2 141.1

Sensible cooling capacity H kW 49.6 60.6 66.3 76.9 91.7

Heating capacity H kW 73.4 86.3 103.0 127.6 142.2

Total input power in cooling mode H kW 20.4 25.0 30.8 38.5 43.1

Total input power in heating mode H kW 18.9 21.8 26.1 34.4 38.6

Version 240 260 300 350 400

Energy indices

E.E.R.* C.O.P.*

H 3.7 3.5 3.4 3.3 3.2 H 3.9 3.9 3.9 3.7 3.6

Condensing unit section

Compressors

Type Number / circuit Capacity step control Input power in cooling mode Input power in heating mode L.R.A. (Locked Rotor Amps)

Axial Fans

Number / Input power Air flow rate

H scroll H n° 2/2 2/2 2/2 2/2 2/2 H % 0-50-100 0-50-100 0-50-100 0-50-100 0-50-100 H kW 15.7 18.5 23.1 29.5 33.2 H kW 14.2 15.3 18.4 25.4 28.7 H A 350 135 175 215 215

H n°/kW 4x0.53 4x0.53 4x0.53 4x0.56 4X0.56 Hm

/h 36000 33000 32000 40000 34200

Air handling section

Evaporator

Number of rows

Fan

Type Nominal air flow rate Minimum air flow rate Maximum air flow rate Number Total installed power Available pressure with std motor

Air filters

Thickness Efficiency

Operating limits

Max. external air temperature

Min. winter external air temperature

Base version sizes

Height Width Lenght

Weight Performances referring to: Cooling mode: Ambient air 27 °C/50% r.h. External air 35 °C Heat pump mode: Ambient air 20 °C/50% r.h. External air 7 °C/70% r.h. * Energy indices referring to cooling circuit

Hn°44444

H Radial, forward curved blades Hm Hm Hm Hn°11111 H kW 2.5 4.3 5.6 6.7 7.6 H Pa 200 200 200 200 200

Hmm5050505050 H EN779 G4 G4 G4 G4 G4

H°C4343434343 H °C -10 -10 -10 -10 -10

H H H H

/h 14000 17000 20000 22000 23000

/h 10400 14800 17400 19100 19550

/h 14100 20000 23500 23500 23500

mm mm mm

1.830 1.830 1.830 1.830 1.830

2.166 2.166 2.166 2.166 2.166

3.290 3.290 3.290 3.290 3.290

1.300 1.390 1.480 1.565 1725

Manual selection, installation and maintenance

Roof-top units - RTE series-

Cooling only F-A (high temperature)

RTE

Cooling capacity F A kW 78.0 89.9 105.6

Sensible cooling capacity F A kW 50.7 62.1 68.7

Total input power F A kW 20.3 24.8 30.7

Version 240 260 300

Energy indices

E.E.R.*

F A 4.68 4.30 4.01

Condensing unit section

Compressors

Type Number / circuit Capacity step control Compressor input power L.R.A. (Locked Rotor Amps)

F A scroll F A n° 2/2 2/2 2/2 F A % 0-50-100 0-50-100 0-50-100 F A kW 15.5 18.2 22.4 F A A 350 135 175

Fans

Number / Input power Air flow rate

F A n°/kW 4x0.53 4x0.53 4x0.53 F A m3/h 14500 14000 16500

Air handling section

Evaporator

Number of rows

F A n° 4 4 4

Fan

Type Nominal air flow rate Minimum air flow rate Maximum air flow rate Number Total installed power Available pressure with std motor

Air filters

Thickness Efficiency

Operating limits

Max. external air temperature

Base version sizes

Height Width Lenght Weight

F A Radial, forward curved blades F A m3/h 14000 17000 20000 F A m3/h 10400 14800 17400 F A m3/h 14100 20000 23500 F A n° 1 1 1 F A kW 2.58 4.37 6.13 F A Pa 200 200 200

F A mm 50 50 50 F A EN779 G4 G4 G4

F A °C 46 46 46

F A F A F A F A

mm mm mm

1.830 1.830 1.830

2.166 2.166 2.166

3.290 3.290 3.290

1.300 1.390 1.480

Performances referring to: Room air 27 °C / 50% r.h. External air 35 °C * Energy indices referring to cooling circuit

Manual selection, installation and maintenance

Roof-top units - RTE series-

Heat pump H-A (high temperature)

RTE

Cooling capacity H A kW

Sensible cooling capacity H A kW

Heating capacity H A kW

Total input power in cooling mode H A kW

Total input power in heating mode H A kW

Version 240 260 300

Energy indices

E.E.R.* C.O.P.*

H A 4.59 4.51 4.31 H A 4.81 5.06 4.98

Condensing unit section

Compressors

Type Number / circuit Capacity step control Input power in cooling mode Input power in heating mode L.R.A. (Locked Rotor Amps)

Axial Fans

Number / Input power Air flow rate

H A scroll H A n° 2/2 2/2 2/2 H A % 0-50-100 0-50-100 0-50-100 H A kW 15.3 17.9 22.0 H A kW 14.5 15.7 18.5 H A A 350 135 175

H A n°/kW 4x0.53 4x0.53 4x0.56 H A m3/h 14500 14000 16500

77.2 89.0 104.6

50.0 61.1 68.0

77.1 87.4 101.5

20.0 24.4 30.4

19.2 22.1 26.9

Air handling section

Evaporator

Number of rows

Fan

Type Nominal air flow rate Minimum air flow rate Maximum air flow rate Number Total installed power Available pressure with std motor

Air filters

Thickness Efficiency

Operating limits

Max. external air temperature

Min. winter external air temperature

Base version sizes

Height Width Lenght Weight

H A n° 4 4 4

H A Radial, forward curved blades H A m3/h 14000 17000 20000 H A m3/h 10400 14800 17400 H A m3/h 14100 20000 23500 H A n° 1 1 1 H A kW 2.58 4.37 6.13 H A Pa 200 200 200

H A mm 50 50 50 H A EN779 G4 G4 G4

H A °C 46 46 46

H A °C -10 -10 -10

H A H A H A H A

mm mm mm

1.830 1.830 1.830

2.166 2.166 2.166

3.290 3.290 3.290

1.300 1.390 1.480

Performances referring to: Cooling mode: Ambient air 27 °C/50% r.h. External air 35 °C Heat pump mode: Ambient air 20 °C/50% r.h. External air 7 °C/70% r.h. * Energy indices referring to cooling circuit

Manual selection, installation and maintenance

Roof-top units - RTE series-

Cooling only F-L (low-noise)

RTE

Cooling capacity F L kW 68.7 84.5 102.6

Sensible cooling capacity F L kW 44.7 58.3 66.7

Total input power F L kW 24.8 27.3 32.1

Version 240 260 300

Energy indices

E.E.R.*

F L 3.2 4.3 4.0

Condensing unit section

Compressors

Type Number / circuit Capacity step control Compressor input power L.R.A. (Locked Rotor Amps)

F L scroll F L n° 2/2 2/2 2/2 F L % 0-50-100 0-50-100 0-50-100 F L kW 20.1 20.8 23.8 F L A 350 135 175

Fans

Number / Input power Air flow rate

F L n°/kW 4x0.53 4x0.53 4x0.53 F L m3/h 9500 9000 11000

Air handling section

Evaporator

Number of rows

F L n° 4 4 4

Fan

Type Nominal air flow rate Minimum air flow rate Maximum air flow rate Number Total installed power Available pressure with std motor

Air filters

Thickness Efficiency

Operating limits

Max. external air temperature

Base version sizes

Height Width Lenght Weight

F L Radial, forward curved blades F L m3/h 14000 17000 20000 F L m3/h 10400 14800 17400

Hm F L n° 1 1 1 F L kW 2.6 4.4 6.1 F L Pa 200 200 200

F L mm 50 50 50 F L EN779 G4 G4 G4

F L °C 39 39 39

F L F L F L F L

/h 14100 20000 23500

mm mm mm

1.830 1.830 1.830

2.166 2.166 2.166

3.290 3.290 3.290

1.300 1.390 1.480

Performances referring to: Ambient air 27 °C / 50% r.h. External air 35 °C * Energy indices referring to cooling circuit

Manual selection, installation and maintenance

Roof-top units - RTE series-

Heat pump H-L (low-noise)

RTE

Cooling capacity H L kW 68.0 83.6 101.6

Sensible cooling capacity H L kW 44.2 55.6 65.9

Heating capacity H L kW 74.5 83.6 98.5

Total input power in cooling mode H L kW 24.4 26.8 31.6

Total input power in heating mode H L kW 19.0 21.8 26.5

Version 240 260 300

Energy indices

E.E.R.* C.O.P.*

H L 3.13 3.72 3.94 H L 4.74 4.94 4.89

Condensing unit section

Compressors

Type Number / circuit Capacity step control Input power in cooling mode Input power in heating mode L.R.A. (Locked Rotor Amps)

Axial Fans

Number / Input power Air flow rate

H L scroll H L n° 2/2 2/2 2/2 H L % 0-50-100 0-50-100 0-50-100 H L kW 19.7 20.4 23.4 H L kW 14.3 15.3 18.3 H L A 350 135 175

H L n°/kW 4x0.53 4x0.53 4x0.53 H L m3/h 9500 9000 11000

Air handling section

Evaporator

Number of rows

Fan

Type Nominal air flow rate Minimum air flow rate Maximum air flow rate Number Total installed power Available pressure with std motor

Air filters

Thickness Efficiency

Operating limits

Max. external air temperature

Min. winter external air temperature

Base version sizes

Height Width Lenght Weight

H L n° 4 4 4

H L Radial, forward curved blades H L m3/h 14000 17000 20000 H L m3/h 10400 14800 17400 H L m3/h 14100 20000 23500 H L n° 1 1 1 H L kW 2.6 4.4 6.1 H L Pa 200 200 200

H L mm 50 50 50 H L EN779 G4 G4 G4

H L °C 39 39 39 H L °C -10 -10 -10

H L H L H L H L

mm mm mm

1.830 1.830 1.830

2.166 2.166 2.166

3.290 3.290 3.290

1.300 1.390 1.480

Manual selection, installation and maintenance

Operating limits

Alta temperatura (A) Standard

Silenziata (L)

Roof-top units - RTE series-

The units, in their standard configuration, are not suitable for installation in a salty

Summer mode

Winter mode: (heat pump)

environment.

N.B: If you wish to operate the machine beyond the limits indicated in

High temperature (A)

the diagram, please contact AERMEC engineering/commercial department.

Quiet (L)

If the unit is situated in particularly windy environments it is necessary to install a wind break protection to avoid unstable operation of the DCPR device.

(dry bulbe temperature)

Model 240 260 300 350 240 260 300 240 260 300

Version Standard Vers. High temp Vers.. (A)

Max. external temperature in cooling mode °C 43 46 46 46 39 39 39

Min. external temperature in cooling mode °C 20

Max. input temp. to evaporating coil in cooling mode °C 30

Min. input temp. to evaporating coil on cooling mode °C 18

Min. external temperature in heat pump mode °C -10

Max. external temperature in heat pump mode °C 20

Max. input temp. to evaporator coil in heat pump mode °C 24

Min. input temp. to evaporator coil in heat pump mode °C 10

Quiet operation vers.(L)

fig.03

Sound data

Lw: sound power level Lp: sound pressure level

* 1 mt. away from the unit, ducted fan, direction factor Q = 4.

240 80 75 85 78 78 76 72 65 54 260 81 76 86 79 78 76 72 65 54 300 82 78 88 81 79 77 73 66 56 350std 85 79 92 85 82 79 75 68 58

240 77 72 79 75 74 72 71 64 53 260 78 73 80 76 75 72 71 64 53 300 79 74 82 77 76 73 72 65 54

Manual selection, installation and maintenance

Standard version and High Temperature version(A)

Total sound levels Octave band [Hz]

Lw tot

[dBA]

Lp tot *

[dBA]

125 250 500 1000 2000 4000 8000

Sound power levels Lw [dB]]

Low Noise version (L)

Total sound levels Octave band [Hz]

Lw tot

[dBA]

Lp tot *

[dBA]

125 250 500 1000 2000 4000 8000

Sound power levels Lw [dB]

Roof-top units - RTE series-



Cooling capacity and input power

The following diagrams make it possible to obtain the corrective coefficient to be used for the rooftop units in the cooling function. Alongside each curve, the temperature of the outside air it refers to is reported. The total cooling capacity, the sensible cooling capacity and the electrical input power in conditions other than the nominal ones are obtained by multiplying the nominal values in the technical data table for the respective correction coefficients (Cft, Cfs e Cpa).

Example: if RTE 240F on the technical data sheet capacities with nominal air flow at 27°C and 50% R.H.: tot. refrig. cap. of 66.0 kW and sens. refrig. cap.

45.2 kW with outside air 35°C; Then at 24°C and 50% H.R. will supply respectively : 66.0x0.92=60.7 kW and

45.2x0.97=43.8 kW.

Cft















Total cooling capacity coefficient





   

Cfs











 

#

#

#

#

#

#

#

#

#

#

Te [°C]









   

Cpa













Input power coefficient Sensible cooling capacity coefficient







   

#

#

#

 

Te [°C]

Tav.01

Key Cft Coefficient Total cooling capacity Cfs Sensible cooling capacity coefficient Cpa Input power coefficient

Manual selection, installation and maintenance

Temperature of the air to be treated b.s. 50% R.H. [°C]

Te External air temperature °C b.s. Dry bulb R.H. Relative Humidity

The following diagrams give the corrective coefficients to be used for the rooftop units operating in heat pump mode. Each curve refers to a specific room temperature (16-20-24°C). The x-axis shows the dry temperature of the external air with variable relative humidity, according to the data shown in the table below. The performances are given net of the defrosting cycles. The corrective coefficients (Cpt, Cpa) allow to calculate the heating capacity and the electrical input power at conditions other than the nominal ones.

Roof-top units - RTE series-

Heating capacity and input power

Cpt













Heating capacity coefficient



#

#

#

T [°C]





   

Cpa

Input power coefficient

KEY Cpt Heating capacity coefficient Cpa Input power coefficient d.b. Dry bulb T [°C] Dry bulb temperature of the handled air.





















External air d.b. [°C]

  

#

#

#

  

T [°C]

The x-axes show a temperature which refers to the following humidity conditions:

Temp. in x-axis °C -8 -6 -4 -2 0 246810121416

Dry bulb temp °C-8-6-4-20246810121416

Rel. Humid. %90908580757570707065656565

Manual selection, installation and maintenance

Roof-top units - RTE series-

Corrective coefficients for different flow rates

The data given by the diagrams at pg. 21-22 refer to nominal air flowrates (Wn). For different flowrates (W) please apply the corrective coefficients shown in the tables on the right.

Correction coefficients for flow rates other than the rated flow rates by total cooling capacity

W/Wn 0,8 0,9 1 1,1 1,2

Cft 0,974 0,987 1 1,014 1,027

Correction coefficients for flow rates other than the rated flow rates and for sensitive cooling capacity

W/Wn 0,8 0,9 1 1,1 1,2

Cfs 0,905 0.953 1 1.048 1.095

Correction coefficients for flow rates other than the rated flow rates for heating capacity

W/Wn 0,8 0,9 1 1,1 1,2

Cpt 0,974 0,987 1 1,014 1,027

KEY Cft Coefficient Total cooling capacity Cfs Sensible cooling capacity coefficient Cpt Heating capacity coefficient

The input power does not vary greatly with the variation in the flow rate of the air to be treated

Total capacities for different relative humidities

The table gives the corrective coefficients to calculate the TOTAL COOLING CAPACITY for different relative humidities, dry bulb temperature unchanged.

The table gives the corrective coefficients to calculate the SENSIBLE COOLING CAPACITY for different relative humidities, dry bulb temperature unchanged

Correction coefficients for total refrigeration capacities as the relative humidity changes

R.H. % 30 40 50 60 70

Coefficient 0.89 0.94 1 1.06 1.12

Correction coefficients for sensible refrigeration capacities as the relative humidity changes

R.H. % 30 40 50 60 70

Coefficient 1.23 1.11 1 0.89 0.79

Example: if RTE 240F on the technical data sheet supplies at 27°C and 50% R.H.: tot. refrig. cap. of 66.0 kW and sens. cooling cap. 45.2 kW with outside air 35°C; Then at 27°C and 70% R. H. supplies respectively: 66.0x1.12=73.9 kW and 45.2x0.79=35.7 kW.

Manual selection, installation and maintenance

0,9

1,0

1,1

1,2

1,3

1,4

0% 5% 10% 15% 20% 25% 30% 35% 40%

FcGDpC

FcGQC

Performance tables for water heating coils

The RTE units may be supplied with a two-row hot water coil (accessory) provided with modulating three-way valve (actuator included). The first diagram shows the corrective coefficients to be applied to the nominal performances of the hot water coil given on pg. 13.

Example : Calculate the performances of the hot water coil installed on a RTE 240 at the following design conditions:

· Heating water inlet temperature: 70 °C;

· Room temperature: 22 °C;

· Water thermal drop The coil heating capacity, with air at 20°C and water 80/70°C, is 140 kW according with the technical data sheet at pg. 13. The temperature difference between the water inlet and the air is DAW=7022=48°C. The diagram gives the corrective coefficient Cfpt=0.63. Hence the coil heating capacity at the given condition is 140x0.63=88.2 kW.

T20=20 °C.

CfPT

key• key CfPT Heating capacity corrective coefficient DAW Temperature difference between water inlet - air inlet [°C] ∆ t Water thermal drop [°C]

[kPa]



























   

351

Roof-top units - RTE series-

 

$4#

$4#

$4#

Water coil pressure drops

Fig.04 shows the heating coil water pressure drops. The pressure drops due to the three-way valves are included.

Corrective coefficients for pressure drop and flowrate with glycoled water

FcGDpC = Pressure drop corrective coefficient FcGQC = Flowrate corrective coefficient

The water flowrate and pressure drop corrective coefficients have to be applied directly to the data for normal water.









Water pressure drop







   

Water flow rate [l/h]

Percentage of ethylene glycole

Percentuale di glicole etilenico



fig.04

Manual selection, installation and maintenance

Roof-top units - RTE series-

Technical data generator Gxxx

Gxxx Model G72 G92 G150

RTE

Matching with sizes RTE Combination thermal modu-

les Temperature rise (at nominal air flow and maximum heat output)

Thermal Module 072 092 150

Nominal air flow kW 22 78 30 98 44 155 Efficiency % 105 93,8 105 95,3 105,2 93,5 Nominal thermal power kW 23,1 73,2 31,5 93,4 46,3 145 Condensate produced l/h 2,2 2,6 3,9 NOx mg/kWh 35 37 43 Gas connection diameter UNI ISO 7/1 - 1” M UNI ISO 7/1 - 1” M UNI ISO 7/1 - 1” M diameter tube suction / discharge mm 100 / 100 100 / 100 350 / 350 Available pressure exhaust fumes Pa 120 120 100 Minimum working temperature °C -15 -15 -15 Power supply V / Hz 230 / 50 230 / 50 230 / 50 Category II 2H 3B/P G20 natural gas supply pressure mbar 20 (min. 17; max. 25)

G20 natural gas consumption (15 ° C - 1013mbar) Carbon dioxide gas supply pressure G30CO2 G20

Supply Pressure G30 mbar 37

Consumption G30 (15 ° C - 1013mbar)

Carbon dioxide CO2 G30 % 9,5 +/- 0,3 Supply Pressure G31 mbar 37

Consumption G31 (15 ° C - 1013mbar)

Carbon dioxide CO2 G31 % 9,5 +/- 0,3

RTE240 RTE240 RTE260 RTE300 RTE350 RTE400 RTE260 RTE300 RTE350 RTE400

model

n° x

model

1x72 1x92 1x92 1x92 1x92 1x92 1x150 1x150 1x150 1x150

°C

20 25,5 17,9 15,2 13,8 13,2 27,7 23,5 21,4 20,5

min. max. min. max. min. max.

m3/h 2,33 - 8,25 3,18 - 10,38 4,50 - 15,80

% 8,7 +/- 0,2

m3/h 1,42 - 5,02 1,93 - 6,31 2,83 - 9,97

m3/h 1,40 - 4,95 1,88 - 6,14 2,76 - 9,71

Manual selection, installation and maintenance

Roof-top units - RTE series-

List of pressure equipment - Directive PED 97/23 CE

The table alongside shows the list of pressure equipment and form mounted on the roof-top RTL, according to Directive 97/23 CE PED module A1.

Refrigerant circuits

RTE 240 F - 400 F refrigerating circuit

COMPONENT MODULE

Compressor D1 Coil A Three way valve esclusa (art. 3.3) Liquid receiver D1 High pressure switch B+D Safety valve high pressure side B+D Safety valve low pressure side B+D

NOTE: This scheme refers to only one of the two circuits. Scketched elements are optional.

CP compressor FI filter drier

VS high pressure safety valve 30 bar VO solenoid valve (optional)

AP high pressure switch (27 bar) IL liquid and humidity indicator

PA pressure transducer VT thermostatic expansion valve

RS ball valve (optional) VM centrifugal fan

EV axial fan BI internal coil

BE external coil BP low pressure switch (it stops the compressor at 2 bar and starts it at 2,3 bar)

Manual selection, installation and maintenance

RTE 240 H - 400 H refrigerating circuit

Roof-top units - RTE series-

CIV

PBSV

NOTE: This scheme refers to only one of the two circuits.

CP compressor VO solenoid valve

VS high pressure safety valve 30 bar PZ temperature probe pit

AP high pressure switch (27 bar) IL liquid and humidity indicator

PA pressure transducer VT thermostatic expansion valve

VIC refrigerant reversing valve VSBP by pass solenoid valve

EV axial fan VM centrifugal fan

BE external coil BI internal coil

FI filter drier RL liquid receiver

VU one way valve

Manual selection, installation and maintenance

Base versions

Single section rooftop

• front exhaust

• downwards supply

• filters G4 (optional heating coil)

(fig.1)

Standard air flow

SMP

Single section rooftop

• two-ways mixing box, rear exhaust intake (actuator as optional)

• filters G4 (optional heating coil)

FT7

Single section rooftop

• prefilter G3

• bag filters F7 (heating coil as optional)

SM2

Single section rooftop

• two-ways mi x i n g bo x , s i d e or bottom exhaust intake (actuators as optional)

• filters G4

(optional heating coil)

SM2-FT7

Single section rooftop

• two-ways mixing box with side, bo ttom or front exhaust i ntake (actuators as optional)

• prefilter G3

• bag filters F7

(heating coil as optional)

(fig.2)

(fig.3)

(fig.4)

(fig.5)

Single section rooftop

• front exhaust

• downwards supply

• filters G4

(optional heating coil)

Roof-top units - RTE series-

Dimensions

SMP

Single section rooftop

• two-ways mixing box, rear exhaust

intake (actuator as optional)

• filters G4

(optional heating coil)

FT7

Single section rooftop

• prefilter G3

• bag filters F7

(heating coil as optional)

Standard air flow

3930

3290

(fig.1)

(fig.2)

(fig.3)

SM2

Single section rooftop

• two-ways mixing box, side or bottom exhaust intake (actuators as optional)

• filters G4

(optional heating coil)

SM2-FT7

Single section rooftop

• two-ways mixing box with side, bottom or front exhaust intake (actuators as optional)

• prefilter G3

• bag filters F7

(heating coil as optional)

Manual selection, installation and maintenance

4500

(fig.4)

(fig.5)

G72 - G92 - G150

Single section rooftop

• prefilter G3

• hot air condensation type generator with 72 or 92 kW heating capacity according to the selected rooftop version. The generator is installed in a module with sandwich panels with mineral wool insulation (density 100 kg/m

)

SM3

Rooftop

• three-way mixing box with:

exhaust fan with variable pitch pulley

- standard rain hoods

- modulating actuators for all the

da m pers (modulat ing s pring return actu ators for external damper as optional).

Exhaust air intake

Optional exhaust air intake

G72 - SMP / G92 - SMP / G150 - SMP

G72 - F7 / G92 - FT7 / G150 - FT7

SM3 - FT7

(fig.6)

(fig.7)

(fig.8)

(fig.9)

(fig.10)

Single section rooftop

• prefilter G3

SM3

Rooftop

• three-way mixing box with:

exhaust fan with variable pitch pulley

- standard rain hoods

- modulating actuators for all the

dampers (modulating spring return actuators for external damper as optional).

)

Exhaust air intake

4985

5310

Optional exhaust air intake

Roof-top units - RTE series-

(fig.6)

(fig.7)

G72 - SMP / G92 - SMP / G150 - SMP

G72 - F7 / G92 - FT7 / G150 - FT7

5625

(fig.8)

(fig.9)

SM3 - FT7

Manual selection, installation and maintenance

5950

(fig.10)

SM2 - G72 / SM2 - G92 / SM2 - G150

SM2 - G72 - FT7 SM2 - G92 - FT7

REC

REC - FT7

(fig.11)

(fig.12)

(fig.13)

(fig.14)

SM2 - G72 - FT7 SM2 - G92 - FT7 SM2 - G150 - FT7

SM2 - G72 - FT7

SM2 - G72 - FT7 SM2 - G92 - FT7

SM2 - G92 - FT7 SM2 - G150 - FT7

6280

Roof-top units - RTE series-

(fig.11)

REC

Rooftop:

• Heat recovery unit provided with :

- exhaust fan with variable pitch pulley

- panel filters G4 for exhaust air

- panel filters G4 for fresh air

- modulating actuators for all the dampers (modulating spring return actuators for external dampers as optinal).

- double filter differential pressure switch as optional

REC - FT7

6280

7080

(fig.12)

(fig.13)

Manual selection, installation and maintenance

7080

(fig.14)

(fig.15)

(fig.16)

(fig.17)

(fig.18)

SM3 - G72

SM3 - G92 SM3 - G150

SM3 - G72 - FT7 SM3 - G92 - FT7 SM3 - G150 - FT7

REC - G72 REC - G92 REC - G150

REC - G72 - FT7 REC - G92 - FT7 REC - G150 - FT7

SM3 - G92 SM3 - G150

SM3 - G72 - FT7 SM3 - G92 - FT7 SM3 - G150 - FT7

7005

Roof-top units - RTE series-

(fig.15)

REC - G72 REC - G92 REC - G150

REC - G72 - FT7 REC - G92 - FT7 REC - G150 - FT7

8125

7645

(fig.16)

(fig.17)

Manual selection, installation and maintenance

8765

(fig.18)

Nominal dimensions

RTE 240-260-300-350 - 400 standard base version

Roof-top units - RTE series-

2172

2162

3291

3282

2246

1830

1730

Refrigerant charge

R410A REFRIGERANT CHARGE -ONLY COOLING VERSION

Model 240 F 260 F 300 F 350 F 400 F

Std version [kg]

High temperature version [kg]

Low noise version [kg]

R410A REFRIGERANT CHARGE - HEAT PUMP VERSION

Model 240 H 260 H 300 H 350 H 400 H

Std version [kg]

High temperature version [kg]

Low noise version [kg]

Manual selection, installation and maintenance

Contact the technical department AERMEC S.p.A.

Roof-top units - RTE series-

Weights

WEIGHTS - ONLY COOLING VERSION

Model 240 F 260 F 300 F 350 F 400 F

Std version [kg] 3500 1420 1460 1610 1695

SMP [kg] 1460 1590 1630 1770 1855

FT7 [kg] 1532 1660 1700 1840 1925

SM2 [kg] 1600 1640 1770 1910 1995

SM2 - FT7 [kg] 1630 1670 1800 1940 2025

Weight addition for high temperature/low noise versions

[kg] + 50 + 50 + 50 n.d. n.d.

WEIGHTS - HEAT PUMP VERSION

Model 240 H 260 H 300 H 350 H 400 H

Std version [kg] 1350 1380 1550 1690 1775

SMP [kg] 1500 1540 1720 1860 1945

FT7 [kg] 1550 1560 1760 1900 1985

SM2 [kg] 1570 1580 1950 2260 2175

SM2 - FT7 [kg] 1670 1680 2060 2200 2285

Weight addition for high temperature/low noise versions

WEIGHTS VALID FOR BOTH VERSIONS ONLY COOLIG AND HEAT PUMP

Model 240 F/H 260 F/H 300 F/H 350 F/H 400 F/H

Two rows water coil [kg] 55 55 55 55 55

Heat generator 72 kW [kg] 610 n.d. n.d. n.d. n.d.

Heat generator 92 kW [kg] 650 650 650 650 650

Heat generator 150 kW [kg] n.d. 700 700 700 700

Heat generator 72 kW + two ways mixing box rear exhaust and/or bag filters

Heat generator 92 kW + two ways mixing box rear exhaust and/or bag filters

Heat generator 150 kW + two ways mixing box rear exhaust and/or bag filters

Heat generator 72 kW + two ways mixing box side exhaust and/or bag filters

Heat generator 92 kW + two ways mixing box side exhaust and/or bag filters

Heat generator 150 kW + two ways mixing box side exhaust and/or bag filters

Three way mixing box [kg] 560 570 580 600 600

Heat recovery unit [kg] 890 900 910 940 940

[kg] 50 50 50 n.d. n.d.

[kg] 840 n.d. n.d. n.d. n.d.

[kg] 860 860 860 860 860

[kg] n.d. 900 900 900 900

[kg] 1040 n.d. n.d. n.d. n.d.

[kg] 1060 1060 1060 1060 1060

[kg] n.d. 1100 1100 1100 1100

Manual selection, installation and maintenance

Configurations

RTE 240-260-300-350 with two-ways mixing box SM2

The ROOFTOP units with two-ways mixing box are available in the following different configurations:

T1 - RIGHT SIDE ROOM AIR INTAKE

The damper for the room air intake is on the right side of the unit while the fresh air damper is on the back of the unit.

T2 - LEFT SIDE ROOM AIR INTAKE

The damper for the room air intake is on the

VERSIONS MIXING

VERSIONI CAMERA DI MISCELA A 2

CHAMBER AT 2 DAMPERS

SERRANDE TIPO SM2

SM2

left side of the unit while the fresh air damper is on the back of the unit.

T3 - REAR ROOM AIR INTAKE

The dampers for the room air intake and the fresh air intake are both on the back of the unit. This version is required only when the units is provided also with FT7 bag filters; if there are no bag filters, select the two-ways mixing box 'SMP' type.

T4 - BOTTOM ROOM AIR INTAKE

The damper for the room air intake is at the base

Roof-top units - RTE series-

of the unit while the fresh air intake is on the back of the unit

5 - AMBIENT AIR INLET SIDE RIGHT

The air intake damper the environment to conditions and post to the right of following the flow air, while the air damper External renewal is to the left unit.

T6 - SUCTION AMBIENT AIR LEFT SIDE

The damper air intake from the environment to conditions and to the left of the unit following the flow of air, while the outside air damper for renewal shall be placed to the right of the unit.

SM2 T1

Presa aria di rinnovo

Fresh air intake

con serranda interna

with internal damper

SM2 T3

Note: recommended

N.B.: consigliato solo

only with filters F7

con filtri F7

Front recirculation damper

SM2

Right recirculation

Serranda di ricircolo destra

damper

Serranda di ricircolo posteriore

Bottom recirculation

Serranda di ricircolo inferiore

damper

Right

Serranda di ricircolo

recirculation

sinistra

damper

SM2 T2

SM2

Manual selection, installation and maintenance

SM2 T5

Roof-top units - RTE series-

RTE 240-260-300-350

with three-way mixing box

STANDARD - REAR INTAKE

The room air intake is from the back of the unit

AI - BOTTOM INTAKE

The exhaust air is intaken from the bottom of the vertical exhaust section integrated in the three-way mixing box.

AS - HIGHER ASPIRATION

The exhaust air is intaken from the higher the vertical exhaust section integrated in the three-way mixing box.

THREE-WAY MIXING BOX

STANDARD

Damper renewals with waterproof headphones

Damper removal

AS - Higher aspiration

AI Bottom intake

RTE 240-260-300-350

with heat recovery unit

• Heat recovery unit provided with :

- exhaust fan with variable pitch pulley

- panel filters G4 for exhaust air

- panel filters G4 for fresh air

- modulating actuators for all the dampers (modulating spring return actuators for external damper as optional).

- double filter differential pressure switch as optional.

- cross flow heat exchanger sized for the recovery of up to 100% flow

HEAT RECOVERY CROSS FLOW REC HEAT RECOVERY WITH CROSS-FLOW BYPASS REC BP

Manual selection, installation and maintenance

Air return

Damper renewal

Damper removal

Inspection coil

Filters renewal inspection

Inspection fan and filter recovery

RTE with recuperator Heating up operation (all fresh air)

EXHAUST AIR

Rinnovo

Espulsione

CHIUSA

pulsione Rec.

Roof-top units - RTE series-

In the heating up modality, the outside exhaust damper and the recuperators exhaust damper are completely closed, while the recirculation damper is entirely open. All exhaust air flow is recirculated until the desired room temperature is reached.

FRESH DAMPER

CROSS FLOWS RECUPERATOR

RECIRCULATION DAMPER

ROOM AIR

Total recovery operation

EXHAUST AIR

Espulsione

RECIRCULATION

EXHAUST DAMPER

DAMPER

FRESH AIR

Rinnovo

pulsione Rec.

RECUPERATORS EXHAUST DAMPER

In the total recovery operation, the outside exhaust damper and the recirculation damper are completely closed, while the recuperators exhaust damper is entirely open. According to the operation type (winter or summer) the exhaust air exchanges heat with the fresh air. It is possible to set a partial recovery operation: the recuperators exhaust damper reaches the percentage of the set opening while the remaining air flow crosses through the recirculation damper.

FRESH DAMPER

CROSS FLOWS RECUPERATOR

EXHAUST AIR

RECUPERATORS EXHAUST DAMPER

Free-cooling operation

EXHAUST AIR FRESH AIR

Rinnovo

EXHAUST

Espulsione

AIR

EXHAUST DAMPER

RECIRCULATION DAMPER

Manual selection, installation and maintenance

pulsione Rec.

In this modality, the recuperators exhaust damper and the recirculation damper are completely closed, while the outside exhaust damper remains entirely open. The exhaust air is therefore directly conveyed to outside without crossing through the heat recuperator. The fresh air is extracted from outside and introduced in room.

FRESH DAMPER

CROSS FLOWS RECUPERATOR

RECUPERATORS EXHAUST DAMPER

RTE with heat generators G72 - G92 kW (Here is the image of the version with bag filters and edge inspection R)

Form of heat from the generator 72 or 92 kW supplied with:

- Combustion chamber condensing heat exchanger tube boilers;

- Modulating gas burner premixed methane;

- Insulated stainless steel flue terminal anti reflux provided in support;

- Conversion kit to LPG;

- Electronic controller and safety thermostats.

Air flow

Roof-top units - RTE series-

Survey electrical connection box

Burner and boiler inspection

Gas Line In

Condensate drain boiler

Inspection filters

RTE with heat generators G150 kW (In this position is displayed the version with flat filters and left inspection)

Form 150-kW generator of heat supplied with:

- Combustion chamber condensing heat exchanger tube boilers;

- Modulating gas burner premixed methane;

- Insulated stainless steel flue terminal anti reflux provided in support;

- Conversion kit to LPG;

- Electronic controller and safety thermostats.

Air flow

Inspection filters

Burner and boiler inspection

Manual selection, installation and maintenance

Condensate drain boiler

Gas Line In

Roof-top units - RTE series-

PR2 Remote panel (accessory)

The graphic display is an electronic device that allows for the complete management of the graphics through the display of icons (defined at the level of software application development) and the management

of two dimension international fonts: 5x7 e 11x15 pixel. The application software is only resident on the card. The terminal does not need any additional software in the usage phase. In addition, the terminal offers a wide

range of operating temperature and in the wall built-in version, the front guarantees a high degree of electrical protection (IP65).

30,4

156

125,5

Manual selection, installation and maintenance

Roof-top units - RTE series-

Packaging

The RTE series units are usually supplied without packaging with the exception of high-efficiency filtering cells and assembly accessories, which are supplied in cardboard boxes and have to be installed by the customer. Upon request, the units can be supplied packaged with polyethylene fim on pallets + polyethylene film, in a cage or in a crate.

Handling

Before moving the unit make sure that it has not been damaged during transport and make sure that the equipment to be used for lifting and positioning is adequate in terms of capacity and complies with security regulations currently in force. Particular attention must be paid to all the loading, unloading and lifting operations so as to avoid dangerous situations for people and damage to the structure and operational parts of the machine. The holes in the base to be used for lifting are indicated with yellow stickers showing a black arrow. The iron poles, which must be suitably sized, must protrude from the base unit for a sufficient length so that the lifting straps can be tightened upwards without encountering any interference. Make sure that the belts have been approved for supporting the weight of the unit, make sure they are properly fixed to the upper frame and to the lifting poles. The safety closures must guarantee that the belts do not come out of their seats. The hooking point of the lifting frame must be on the vertical of the centre of gravity. The positioning must be done using two transpallet, one for each side of the section, preferably acting on the longer sides. Alternatively the positioning can be done by sliding the centre on the tubes that act as rollers. During lifting operations we recommend to mount the shock absorbers (VT), fixing the holes on the base according to the assembly accompanying the accessories (VT). Under no circumstance should anybody or anything stay, even for short periods, under the unit. The machines in the RTE series must be installed externally in an area suitable for this purpose, which has the required technical spaces. This is essential to allow ordinary and extraordinary maintenance and for functioning reasons

3.000

Installing and using the unit

as the device must gather air from the outside along the perimeter sides and expel it upwards. For the proper functioning of the unit, this must be installed on a perfectly flat surface. Make sure that the resting surface is able to bear the weight of the machine.

Positioning

If the unit is situated in particularly windy environments it is necessary to install a wind break barrier to avoid unstable operation of the DCPR device.

Minimum space requirements

CAUTION: The equipment must be installed in such a way as to make maintenance and/or repair operations possible, see fig.05. The equipment warranty does not cover costs due to motor ladders, scaffolding or other raising systems made necessary to carry out the operations covered by the guarantee.

Before commissioning the unit

Before starting up the unit you should check that : – the electrical connections have been

made properly;

– the line voltage is within the admitted

tolerance limits (±10% of the rated value);

WARNING: At least twenty-four hours before the unit start-up (or at the end of each period of prolonged stop) power up

3.000

the compressors crankcase heaters to evaporate any refrigerant in the oil. Without this precaution the compressors could be seriously damaged and the warranty could cease to be valid.

Unit start-up

Commissioning the units must be previously agreed on the basis of the timing for the realisation of the installation

Before the intervention of AERMEC After Sales Service all the works (aeraulic, hydraulic and electrical connections, loading and blowing out of air from the system) will have to be completed.

For the setting of all the operating parameters and for detailed information regarding the operation of the machine and check list, refer to the user's manual.

System charge/discharge

During the winter period, only in the case of water coils, if the system is left still, the water in the heat exchanger might freeze and damage the heat exchanger irreparably. To avoid the risk of freezing, there are three possible solutions:

1) The complete drainage of the water from the heat exchanger at the end of the season and refilling at the beginning of the next season.

2) Operation with glycol water with a glycole percentage chosen on the basis of the minimum external temperature expected. In this case, due account must be taken of the heating coil performance and pump scaling.

3) Keeping the temperate of the water above 5°C.

fig. 05

1.200500

800 800

Manual selection, installation and maintenance

Roof-top units - RTE series-

Norms covering the use of R410A gas

Rooftop units functioning with refrigerating R410A gas require particular attention at the assembly stage and during maintenance so as to keep them from malfunctioning. It is therefore necessary:

- To avoid refilling with oil different from the one specified which is already pre-charge in the compressor.

- If there are gas leaks implying that the Rooftop units are even partially empty, do not refill the refrigerant partly but completely drain the machine and after evacuating it completely fill it again with the amount required.

- In the event of replacement of one of

the refrigerating circuit parts, do not leave the circuit open for more than 15 minutes.

- In particular, in the case of substitution of the compressor, complete the installation within the above mentioned times after removing the rubber caps.

- Do not power up the compressor if it is empty; do not compress air inside the compressor.

- If you use R410A gas tanks, please pay attention to the maximum number of withdrawals you can make in order to ensure the correct ratio of the components in the R410A gas mixture.

Hydraulic connections Condensate drain pain

The condensate drain pan has a threaded drain pipe 1” G UNI 338. The drainage system should feature an adequately sized siphon to:

• allow the free drainage of the condensate;

• prevent the undesired inlet of air in the vacuum systems;

• prevent the undesired air leakage from pressure systems;

• prevent bad smells or insects from infiltrating.

Here below you will find rules to adopt for the dimensioning and creation of syphons in the case of pressure and vacuum tanks fig.06.

Negative pressure: H1 = 2P H2= H1 / 2 Positive pressure:

H1 = 2P H2= H1 / 2

neg.

pos.

G072, G92, G150 gas supply system

For this system, use CE-approved and certified components only. G072, G105, G150 modules are supplied with:

- a double gas valve;

- a gas filter and stabiliser; already installed. All components are assembled into the burner housing. To complete installation in compliance with the law, the following components have to be installed:

where P is the internal pressure expressed as mm of a water column (approx. 1 mm = 9.81 Pa), This pressure is indicated in the relevant label near the condensate drainage point.

The syphon must be equipped with a plug for the cleaning at the bottom or must anyway allow for fast dismantling for cleaning purposes.

fig.06

- vibration damping joint;

- gas cock. We recommend installing a gas filter with a high flow rate and no pressure stabiliser. In fact, the standard filter installed before the gas valve has a limited surface.

To assure efficient maintenance, use a gasket and a swivel joint to connect the G072, G92, G150 module.

Do not directly use threaded joints on gas fitting. The law allows a maximum pressure of 40 mbar inside the building or thermal plant. Higher pressure values shall be reduced before the room where the G072, G105, G150 module is installed.

Manual selection, installation and maintenance

KEY

Main burner gas solenoid valve

2 Pilot burner gas solenoid valve valve

3 Pressure stabiliser

4 Safety solenoid valve

5 Gas filter (small section)

6 Vibration damping joint

7 Gas filter (large section)

8 Gas cock

included in G072, G105,G150 module supply

1 2 3 4 5 6 7 8

only for G 150

Roof-top units - RTE series-

to be installed by the installer

fig.07

Connection aeraulic

For the installation of the ducts it is recommended to:

• install adequate brackets to support the ducts;

• connect the supply and exhaust vents to the ducts by means of antivibration canvases. The antivibration canvas has to be connected to the unit screwing it to the flange or damper,

if present. If the flange or the damper are not present, the antivibration canvas has to be screwed to the frame of the unit using drive screws;

• put in place an electrical earthing cable that acts as a bridge over the shock absorber joint to guarantee electrical equipotentiality between the duct and the unit;

• foresee, before bends, branches, curves, angles etc., the supply duct with a straight stretch at least 2.5

times longer than the smaller side of the duct (A) to avoid a fall off in the performance of the fan;

• avoid the ducts from having stretch inclinations that diverge more 7°C.

The progress of the first curve must conform it to the flange or damper, if present.

with the orientation of the fan.

max 25mm

Manual selection, installation and maintenance

MAX 7°

MIN 2.5 A

The figure illustrates how joinign two sections. It is referred to a tree way mixing box, but its the same for the recovery unit or the or the condensation heat generator.

Roof-top units - RTE series-

Joining RTE sections

Place the sections to unite: the rubber seal that ensures the seal is fit along the entire perimeter of the air passage of the section upstream.

Be aware to pass through the electrical connections. Use the brakets (placed in the box inside the compressor cabinet) to complete the assembly. The gap between the two sections should be about 10 mm . Apply the governing (mounted temporarily on the roof of the section upstream) and plates provided in support (in the compressor compartment) at the base.

Before placing the Tegolino union sections, apply silicone sealant along the entire length at the bottom where it supports the roofs of the two units.

MIN 2.5 A

Manual selection, installation and maintenance

Improper use

Roof-top units - RTE series-

The equipment is designed and constructed to guarantee the maximum security in the immediate proximity as well as to resist atmospheric agents. The fans are protected from undesired intrusion of bodies by protection grilles. The accidental opening of the electrical panel with the machine in operation is prevented by the door lock sectioning device. Avoid laying tools or heavy objects on the side heat exchanger coils to avoid ruining the fin pack.

Do not introduce objects or allow them to fall through the grilles of the fan motors.

Do not rest on the heat exchanger coils: sharp surfaces.

Important information

The machine must not exceed the pressure and temperature limits indicated in the table shown in the "Operating limits” section. Correct functioning is not guaranteed after a fire; before starting up the machine again, contact an authorised after sales centre.

The machine is provided with safety valves that in the case of excessive pressure may discharge hot gases into the atmosphere.

Wind, earthquakes and other natural phenomena of exceptional intensity are not taken into consideration. If the unit is used in aggressive

Electrical wiring

atmosphere or with aggressive water please consult the head office.

Following extraordinary maintenance carried out on refrigeration circuits, with the replacement of components, carry out the following operations before starting the machine again:

1. Pay the greatest attention when restoring the refrigerating load indicated on the machine nameplate;

2. Open all the taps on the refrigerating circuit;

3. Correctly connect the electrical power and the grounding;

4. Check the plumbing connections;

5. Check that the condenser coils are not dirty or clogged;

6. Check the proper rotation of the fans;

The unit is completely wired in the factory and to be set in motion it needs to be powered electrically in accordance with the information on the nameplate, intercepted with on-line protection devices. It is the responsibility of the installation engineer to dimension the power line adequately in accordance with the length, type of cable, input power and current of the unit and the physical deployment. All the electrical connections must correspond with the regulations currently in force at the moment of installation.

WARNING: For installation requirements, please refer to the wiring diagram supplied with the unit.

CAUTION: Check that all power cables are correctly secured to the terminals when switched on for the first time and after 30 days of use. Then check the tightening of all the power terminals twice a year. Loose terminals could cause the cables and components to overheat.

NOTE:

Input cuttent ivalues n the table are referred to the standard unit. The choice of some accessories could change this

Size 240 260 300 350

Max. compress. absorption

Delivery fan [A] 8,1 10,9 14,4 18,3

Condensation fan (tot.) [A] 9,6 9,6 9,6 10,4

Return fan (optional)

Size 240 260 300 350

SECT. A [mm2]35355070

SECT PE [mm2]25252535

IL [mm2] 100 100 125 160

Cross sections recommended for a maximum length of 50m. The cross section of the wires and the scaling of the line cutouts are purely approximate.

Legend: Cross sect. A = Power line Cross sect. PE = Ground line IL = Differential magnetothermal switch AC23A CEI EN 60947

value. For the real input current of the unit, please refer to the electrical diagram provided with the unit.

[kW] 12x2 15x2 18x2 18+24

[A] 20x2 26x2 30x2 30+39

[A] 4,8 6,5 10,9 14,4

TAV.3

Manual selection, installation and maintenance

Security

Roof-top units - RTE series-

The machine has been designed so as to reduce to a minimum the risks for the safety of those persons interacting with it. During the design phase, it was not technically possible to completely eliminate the risk causes. Therefore it is imperative to refer to the following instructions.

Access to the unit

Access to the unit once it has been installed must only be permitted to qualiﬁ ed operators and technicians. The operator is a person who has been authorized by the owner of the machine to carry out

operations on the machine (in accordance with that indicated in the present manual). The technician is a person authorized by AERMEC or subordinate under their own responsibility by a AERMEC distributor, to carry out operations on the machine. The owner of the machine is the legal representative of the company, entity or individual owner of the system in which the AERMEC machine is installed. These persons are responsible for the observance of all safety standards indicated in the present manual and the existing. law. In the event that access by unauthorized persons to the machine cannot be prevented

due to the nature of the location in which it is installed, a cordoned area must be deﬁ ned around the machine and at least 1.5 meters from the external surface, inside of which only operators and technicians are permitted.

Residual risks

The installation, start-up, shutdown and maintenance of the machine must be carried out in accordance with that stipulated in the technical documentation of the product and in such a manner that no hazardous situations are generated.

CONSIDERED PART RESIDUAL RISK METHOD PRECAUTIONS

Heat exchange coil small cuts contact

Fans grille and fan injuries

Insert sharp objects through the grille while fan is operating

avoid contact with eyes, use protective gloves

Insert any objects inside fans grille and not put objects on grilles

Inside the unit: compressor and supply tube severe burns contact

Inside the unit: metal parts and electrical cables

Outside the unit: area around the unit

intoxication, electrocution, severe burns

intoxication, severe burns

insulation defect of the power supply cables upstream of the unit’s electric panel; metal parts under voltage

fire due to short circuit or overheating of the power supply line upstream of the unit’s electric panel

Unit maintenance

The ordinary maintenance must be performed by qualified people each month and consists in simple operations.

WARNING: During the maintenance phase,

wear proper individual protection devices (IPD)

Before performing maintenance

and/or cleaning operations on the unit, make sure the unit is disconnected from the power supply and that it can not be turned back on without the know-

ledge of the person performing maintenance, and that the heat exchanger coils are not working.

The compressors upper part and

the supply tube are at high temperature: pay particular attention when working around them.

Pay particular attention when ope-

rating around the fins coils as fins are particularly sharp.

Not extract the fans protection

grille before having taken away the voltage to unit; not put foreign objects through the fans

avoid contact with eyes, use protective gloves

suitable electrical protection of the power supply line; maximum care when earthing the metal parts

cable section and power supply line safety system conforming with existing laws.

protection grille.

After maintenance operations

always close the unit by means of the specific panels, fixing

them with screws. The following table illustrates the operations related to monthly maintenance of each component, indicating the control type to carry out. The month frequency is indicative and can change according to work and environmental conditions in which the roof top unit operates

Manual selection, installation and maintenance

MONTHLY MAINTENANCE PROGRAM

Check the input.

FANS

Check that the fans motor free rotate without abnormal noises.

Make sure that the bearings do not heat too much.

Check that the fans motor free rotate without abnormal noises. Make sure that the bearings do not heat too much. Check the fans screws fastening to grille and structure grille.

Verify the condensate coils. To grant a correct heat exchange, coils must be cleaned. It is necessary to provide for the removal of possible dust collected on the surface due to airflow. Take away paper, leaves etc.. and clean fins with air jet. To avoid damages to aluminum fins it is necessary that the air jet is direct perpendicularly to coil surface. The cleaning operation must be performed by particular attention as the coil fin is easy to damage (aluminum from 0,12 mm). If fins are damaged, it is necessary to provide for a suitable arrangement with a specific tool. Before performing operations on the coils it is necessary to use protective gloves as the possible contact with fins can cause small cuts.

Check the evaporation and condensate pressures (by a specialized technician). It is necessary to remove compressors panels and to connect with pressure gauges on the suitable pressure sockets placed in the cooling circuits. Check the compressor absorbed current, the supply temperature and the presence of possible noises. Check the proper refrigerant charge by means of the liquid light. Verify the correct setting of the expansion valve (overheating 5 ÷ 8°C). Verify that the oil level indicated in the compressor light is not lower than the minimum. Check the use of the safety devices (pressure switches).

Roof-top units - RTE series-

Check the fans screws fastening to grille and structure grille.

Check the electric supply on all phases. Make sure that electrical connections are adequately closed. Verify that the supply electric cable of the unit does not present alterations which can harm the insulation. Verify the proper screws blocking which fix the conductors to the electrical components present in the electric panel in order to grant a proper electrical connection; the same is for the earthing connections.

CONDENSATE • Check the operation of the control device, LEDs and display.

COILS

The cleaning operation must be performed by particular attention as the coil fin is easy to damage (aluminum from 0,12 mm). If fins are damaged, it is necessary to provide for a suitable arrangement with a specific tool.

Before performing operations on the coils it is necessary to use protective gloves as the possible contact with fins can cause small cuts.

Check the evaporation and condensate pressures (by a specialized technician).

It is necessary to remove compressors panels and to connect with pressure gauges on the suitable pressure sockets placed in the cooling circuits.

COOLING CIRCUIT

Check the compressor absorbed current, the supply temperature and the presence of possible noises.

Check the proper refrigerant charge by means of the liquid light.

Verify the correct setting of the expansion valve (overheating 5 ÷ 8°C).

Verify that the oil level indicated in the compressor light is not lower than the minimum.

Check the use of the safety devices (pressure switches).

Check the electric supply on all phases.

Make sure that electrical connections are adequately closed.

ELECTRICAL CIRCUIT

Verify that the supply electric cable of the unit does not present alterations which can harm the insulation.

Verify the proper screws blocking which fix the conductors to the electrical components present in the electric panel in order to grant a proper electrical connection; the same is for the earthing connections.

CONTROL Check the operation of the control device, LEDs and display.

Manual selection, installation and maintenance

Roof-top units - RTE series-

Diagnosis and fault solving

PROBLEM CAUSE SYMPTOM SOLUTION

1. SUPPLY AIR TEMPERATURTE HIGHER THAN FORESEEN

2. INSUFFICIENT COOLING CAPACITY

3. ABNORMAL NOISE

4.INTERVENTION OF THE LOW PRESSURE SWITCH

1. Heat power too high - The air temperature on supply is higher than the foreseen value

2. Room temperature too

high

3. Condensers fins clogged See 1.1. - Clean the condensers fins

4. Condensers front surface

obstructed

5. Fan rotates in the opposite

direction

6. No refrigerant in the coo-

ling circuit

1. Insufficient refrigerant

charge

2. Room temperature too

high

1. Vibrations in the ducts - The unit noise is higher than normal - Properly fix the ducts with brackets

2. Loud compressor See 3.1 - Verify and eventually replace

3. Loud expansion valve See 3.1 - Verify. Add refrigerant if necessary.

1. Pressure switch out of use - The compressors stop - Verify and replace the pressure

2. Unit completely empty See 4.1. See 1.6.

3. Refrigerant filter clogged See 4.1. - Verify and replace the filter

4. The expansion valve does

not operate properly

5. Room temperature too low See 4.1. - Install the condensate control kit

See 2.1. - Avoid air recirculation on conden-

See 1.1. - Liberare la superficie frontale del

See 1.1. - Invert the position of two fans

- Low evaporation pressure

- Presence of air bubbles in the liquid lights

- The cooling circuit operates properly, but with insufficient capacity

See 2.1. - Avoid air recirculation on conden-

See 4.1. - Verify, clean, eventually replace

- Decrease the heat power, decreasing the flow rate or the air inlet temperature

ser. Facilitate the fresh air flow.

condensatore ostruita

phases

- Search the refrigerant leakages (by a specialized technician) and avoid them.

- Realize the recharge (by a specialized technician)

See 1.6.

ser. Facilitate the fresh air flow.

Replace it if necessary.

switch.

Manual selection, installation and maintenance

Roof-top units - RTE series-

PROBLEM CAUSE SYMPTOM SOLUTION

5. INTERVENTION OF THE HIGH PRESSURE SWITCH

6. COMPRESSORS FAULTS

7. EXPANSION VALVE FAULTS

8. DRIER FILTER FAULTS

1. One or many fans can’t operate

2. Pressure switch out of use See 5.1. -Verify and replace the pressure

3. Excessive refrigerant charge

4. Gas presence impossible to condensate in the cooling circuit

5. Condensate coil not sufficiently run over the from air

6. Clogged refrigerant filte See 5.1. - Verificare e sostituire il filtro

7. Room air temperature too high

8. Hot air recirculation caused by wrong installation

1. Defective compressor -The compressor does not restart - Replace the compressor

2. Absence of a safety device See 6.1 -See par. 5 and 6

3. Defective connection or open contacts

4. Power circuit open See 6.1 - Find the intervention cause of

5. Compressors not under voltage

6. Compressors defective actuator

1. Expansion valve too closed: excessive gas overheating at evaporator outlet

2. Expansion valve too open: the system operates with overheating too low. Compressors liquid return.

3. Expansion valve broken: discharged bulb or blocked stem

1. Drier filter clogged - Compressors suction pipe frosted

- The compressor does stop

- Intervention of the general alarm

See 5.1. - Discharge the gas in excess

See 5.1. - Recharge it after the unit discharge

See 5.1. - See 1.3, 1.4, 1.5

See 5.1. - Verify and replace the filter

- Air outlet temperature from coil higher than max. values permitted

See 6.1 - Verify the voltage and close the

See 6.1 - Check the voltage. Close the

- The compressor starts and stops - Verify and eventually replace

- Compressor too hot - Open the expansion valve to

- Compressor too cool and loud - Close the expansion valve to

- Low evaporation pressure - Replace the valve

- Bubbles in the flow light

- Liquid pipe more cool at drier filter outlet

- Repair or replace fans/ fan

switch

- Avoid the recirculation causes respecting the minimal distances to wall as indicated in the imensional schemes or avoid that the condensate coils are run over the hot air.

contacts

protection, close the compressor automatic

compressors

decrease the overheating

increase the overheating

- Clean or replace the filter

Manual selection, installation and maintenance

The technical data in the following documents are not binding. The Aermec reserves the right to make any changes at any time deemed necessary to the improvement of the product

37040 Bevilacqua (VR) - Italien Via Roma, 996 - Tel. (+39) 0442 633111 Telefax (+39) 0442 93730 - (+39) 0442 93566 www .aermec. com

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Aermec RTE240 user guide manual

Specifications and Main Features

Frequently Asked Questions

User Manual