Aermec Hrc User manual

21.07 – 5146801_00

Translation of Original instructions

www.aermec.com

Accessory manual

HRC



CONTROL SYSTEM FOR RPLI RECOVERY UNITS

All specications are subject to change without prior notice. Although every eort has been made to ensure accuracy, Aermec shall not be held liable for any errors or

omissions.

This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the envi-

ronment or human health from uncontrolled disposal of Waste Electrical and Electronic Equipment (WEEE), please return the device using appropriate

collection systems, or contact the retailer where the product was purchased. Please contact your local authority for further details. Illegal dumping of

the product by the user entails the application of administrative sanctions provided by law.

Dear customer,Thank you for choosing an Aermec product. It is the fruit of many years of experience and special design studies and has been made of the highest grade

materials and with cutting edge technology.In addition, all our products bear the CE mark indicating that they meet the requirements of the European Machine Direc-

tive regarding safety. The quality level is being constantly monitored, so Aermec products are synonymous with Safety, Quality and Reliability.The data may undergo

modications considered necessary for the improvement of the product, at any time and without the obligation for any notice thereof.

Thank you again.

Aermec S.p.A.

TABLE OF CONTENTS

1. General description...........................................................................p.4

HRC kit content.......................................................................................p.4

Electric box dimensions.......................................................................p.4

2. Connections ..........................................................................................p.5

Connection between Load control board and user panel

......................................................................................................................p.5

Control board Input/Output ..............................................................p.5

VMF-MOD board connection (accessory) .....................................p.7

Dip switch setting ..................................................................................p.8

Supervision serial ...................................................................................p.8

3. Operating mode .............................................................................. p.10

Auto Mode............................................................................................. p.10

Manual Mode........................................................................................ p.10

Aux Mode............................................................................................... p.10

4. Control logic....................................................................................... p.11

Anti-freeze through ow rate modulation................................. p.11

Anti-freeze through electric resistance....................................... p.12

Freecooling............................................................................................ p.12

Steriliser lamp....................................................................................... p.13

Post-treatment resistance................................................................ p.13

Post treatment coil.............................................................................. p.15

5. Interface use....................................................................................... p.17

Hardware structure............................................................................. p.17

Software structure .............................................................................. p.17

Main page .............................................................................................. p.18

Input fan power page........................................................................ p.19

Expulsion fan power page ............................................................... p.19

Password page ..................................................................................... p.19

USER menu ............................................................................................ p.20

INSTALLER Menu ................................................................................. p.21

AFTER-SALES ASSISTANCE Menu................................................... p.23

°C/°C change menu ............................................................................ p.25

Alarms signal......................................................................................... p.25

1 GENERAL DESCRIPTION

The HRC accessory kit meets the installation needs of the RPLi recovery units, ensuring the recovery unit the control of:

— Exchange of air charged with carbon dioxide and pollutants

— Inow of heat-treated fresh air (there must be no thermal shocks)

— Implement the free cooling bypass under favourable conditions.

— Contain the energy cost increase with the use of a system that recovers large part of the heat contained in the expelled air stream and transfers it to the fresh air.

— Double resistive load control to treat inow air

1.1 HRC KIT CONTENT

The accessory consists of a 300x380x120 mm plastic electric control board which ensures IP56 protection and so must be installed outside the recovery unit. The HRC accessory

contains all the components necessary for managing the heat recovery units:

— Electronic control board of the loads inserted in an IP56 protection rating plastic board

— No.4 6m long NTC temperature probes

— 4-pole serial cable + screen for connecting the control board to the system user interface

— User interface panel used in the Repuro recovery units which has an aesthetic equal to that of the VMF-E4

1.2 ELECTRIC BOX DIMENSIONS

300

380

396

316

128

49,5

6,5

120

124

251

331

Ø8

2 CONNECTIONS

2.1 CONNECTION BETWEEN LOAD CONTROL BOARD AND USER PANEL

RPLi HRC2 1

Connections:

1: Connection between user panel and load board, to be made with a 4-pole serial cable plus screen (22AWG) supplied;

2: Connection between load board and recovery unit, to be made according to connection needs, following the instructions provided in the next chapter.

Note: the connections from the terminal board (or possible VMF-MOD accessory board) can be 3m max.

2.2 CONTROL BOARD INPUT/OUTPUT

The following tables show the control board input/output: the input/output column indicates the input/output how it is called on the board wiring diagram, the Function

column indicates how the inputs and outputs are used on the various machines in which the board will be installed, the Electrical characteristics column shows the type of

electrical signal that characterises the input/output.

I/O Function Electrical characteristics

M2 L: board electric power supply input Voltage: 230 Vac, 10 A current

M1 N: board electric power supply input Voltage: 230 Vac, 10 A current

M3 GND: ground reference //

M4 AUX/RE: output for electric post-heating resistance control Voltage: 230 Vac, 10 A current

M5 Neutral reference Voltage: 230 Vac, 7 A current

M6 MA: output for freecooling bypass motor control Voltage: 230Vac, 5 A current

M7 Y2: output for electric post-heating resistance control (second stage) Voltage: 230 Vac, 5 A current

M8 Y1: output for pre heating resistance control Voltage: 230 Vac, 5 A current

M9 Neutral reference Voltage: 230 Vac, 10 A current

M10 Neutral reference Voltage: 230 Vac, 10 A current

M11 V3: output for purication device or output damper control Voltage: 230 Vac, 5 A current

M12 V2: output for VSL valve control (cooling only) Voltage: 230 Vac, 5 A current

M13 V1: output for VSL valve control (heating/cooling or heating only) Voltage: 230 Vac, 5 A current

M14 Support input, not connected //

M26 Service terminal board See gure 4

M22 Terminal board not used //

CN2 SW: SAEXIT water probe (if dip 2 OFF): probe of air expelled to the outside (if dip 2 ON) NTC 10Kohm

CN1 SAE: outdoor air probe NTC 10Kohm

CN3 SAM: probe of air introduced into the room NTC 10Kohm

M15, M16 SA: probe of air expelled from the room NTC 10Kohm

M17 Out 0-10V: reference for air inow inverter fan Voltage: 10 Vdc, 10 mA current

M18 Inverter reference GND Voltage: 10 Vdc, 10 mA current

M19 Out 0-10V: reference for air expulsion inverter fan Voltage: 10 Vdc, 10 mA current

M20 GND Voltage: 10 Vdc, 10 mA current

M21 Not used Voltage: 10 Vdc, 10 mA current

M25 VMF-MOD expansion connector //

M27,M28 MS: dierential pressure switch status input Voltage: 5Vdc, 0.5 mA current

NOTE: the M26 terminal board integrates dierent specications, for more details refer to the specic table on the next page.

M26 Terminal board specications:

GND

1 TX/RX

2 GND-TTL

3 MODE

4 V5

5 TX/RX

6GND

TTL

M26 - function inputs

Terminal Code Function

2 GND Common

3 CF Recovery unit enabling input

1 EC Functioning status forcing input

M26 - RS485 serial inputs

Terminal Code Function

4 A

RS485 serial inputs5 B

6 GND

M26 - User panel serial inputs

Terminal Code Function

1 TX/RX

Inputs for connection with user interface panel

2 GND-TTL

3 MODE

4 5V

M26 - TTL serial inputs

Terminal Code Function

5 TX/RX Connection inputs with TTL serial

6 GND

2.3 VMF-MOD BOARD CONNECTION (ACCESSORY)

For hydronic systems where a variable ow rate is required in the circuit that feeds the post-treatment coils, the RPLi recovery unit regulator can manage the modulating valves

thanks to the use of the VMF-MOD expansion (accessory).

M26

M28~PE2

SW1

vmf-mod

230Vac

Vout 1

GND

Vout 2

+24[V]

GND

DIP 2

DIP 1

VMF-MOD

Output name

Type of installation Controlled valve

Vout 1 2-pipe system Cold / hot branch valve

4-pipe system Hot branch valve

Vout 2 2-pipe system No function

4-pipe system Cold branch valve

By setting dip switches 1 and 2 it is possible to select between two dierent functioning curves (for the hot branch and cold branch), as indicated in the following graphs:

100%

3 [°C] TSAM - TSA

100%

TSA - TSAM

4[°C]

Cooling

Heating

5 [°C]

6[°C]

DIP 1 = OFF

DIP 1 = ON

Heating:

DIP 2 = OFF

DIP 2 = ON

Cooling:

2.4 DIP SWITCH SETTING

The board has appropriate conguration dip-switches to meet possible installations. There are 8 microswitches with the following functions:

DIP Position Function

DIP 1 ON Post-treatment resistance presence

OFF Post-treatment resistance not present

DIP 2 ON Pre heating resistance presence

OFF Pre heating resistance not present

DIP 3 ON Post-treatment coil presence

OFF Post-treatment coil not present

DIP 4 ON Recovery unit with heating coil + cooling coil

OFF Recovery unit with heating/cooling coil

DIP 5 ON Freecooling through alternation of the air ow

OFF Freecooling through bypass damper

DIP 6 ON Freecooling dierential with 5°C hysteresis

OFF Freecooling dierential with 2°C hysteresis

DIP 7 ON Dierential pressure switches present

OFF Dierential pressure switches not present

DIP 8 ON Activation dierential according to 3°C electric load

OFF Activation dierential according to 2°C electric load

2.5 SUPERVISION SERIAL

This adjustment standard requires the management of the RS485 serial with which they can be connected as slave to a modbus network. The communication parameters are:

— Modbus RTU

— Baud Rate 19200 bit/s

— Stop bits 2

— No Parity

The following modbus data can be read/written by a supervision system:

LABEL DESCRIPTION CONTROLS VALUE UNIT TYPE ADD

0x03 0x10 MIN MAX

SA_BMS Value read by the room probe SI NO -200 900 °C/10 A 0

SW_BMS Value read by the external coil water probe SI NO -200 900 °C/10 A 1

SAM_BMS Value read by the inow air probe SI NO -200 900 °C/10 A 2

SAE_BMS Value read by the external air probe SI NO -200 900 °C/10 A 3

SINT_BMS Value read by the probe in the user interface SI NO -40 500 °C/10 A 4

SETC_BMS Cold adjustment setpoint value SI NO 80 330 °C/10 A 5

SETH_BMS Hot adjustment setpoint value SI NO 120 400 °C/10 A 6

STATO_BMS Machine status SI NO 0 1 // A 7

MODE_BMS Locally set functioning mode value SI NO 0 3 // A 8

POW1_BMS Fan 1 power SI NO 0 100 % A 9

POW2_BMS Fan 2 power SI NO 0 100 % A 10

ALARM_BMS Alarms found on the recovery unit + recovery unit status ag SI NO 0 8191 // D 11

DIP_BMS Dip_Switch Conguration SI NO 0 255 // D 12

DIGIN_BMS Status of digital inputs SI NO 0 255 // D 13

RELE_BMS Status of electronic board relays SI NO 0 255 // D 14

ENABLE_BMS Enabling from remote and data change ag NO SI 0 1 // D 15

MODER_BMS Remote forced mode value (1: MAN, 2:AUX, 3:AUTO) NO SI 1 3 // A 16

SEASON_BMS Remote forced season value NO SI 0 1 // A 17

SET_POW1_BMS Power set for fan 1 NO SI 0 100 % A 18

SET_POW2_BMS Power set for fan 2 NO SI 0 100 % A 19

SETPOINT_BMS Operating set point NO SI 80 500 °C/10 A 20

HH_FILTRO Operating hours of lters SI NO 0 10000 hours A 21

A: analogue data; D: digital data

The following table describes the digital modbus variables in detail:

LABEL BITS DEFINITION

B1 5 B1 4 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0

ALARM_BM S NU NU NU FLAG_A

FLAG_F

FLAG_RXO

FLAG_FOR

FLAG_VEN

ALL_X

ALL_F

ALL_S

ALL_SA

ALL_DM

DIP_BMS NU NU NU NU NU NU NU NU DIP7 DIP6 DIP5 DIP4 DIP3 DIP2 DIP1 DIP0

DIGIN_BMS NU NU NU NU NU NU NU NU NU FI FR FV SP PI EC CC

RELE_BMS NU NU NU NU NU NU NU NU RL6 RL5 RL4 RL3 RL2 RL1 RL0 RL1

ENABLE_BM S NU NU F_SE

TF_V2 F_V1 F_SEA F_M F_A NU NU NU NU NU NU NU ENABLE

Key:

NU bit not used

ALL_DMF freecooling bypass alarm presence bit

ALL_DMP antifreezer bypass alarm presence bit

ALL_SAE external air probe alarm presence bit

ALL_SAM inow air probe alarm presence bit

ALL_SA expelled air probe alarm presence bit

ALL_F2 F2 fuse alarm presence bit

ALL_F3 F3 fuse alarm presence bit

ALL_XX alarm presence bit to be dened

FLAG_VENT active ventilation presence bit

FLAG_FORZ forcing presence bit from BMS system

FLAG_RXON active resistance presence bit

FLAG_FC operating freecooling presence bit

FLAG_AF operating freecooling presence bit

DIP_i status (ON/OFF) of the ith dipswitch

RLi status (ON/OFF) of ith relay

CC freecooling bypass microswitch input status

CE external contact input status

PI JP1 input status

SP presence sensor input status

FV motor fuse status

FR resistance fuse status

FI anti-freeze bypass microswitch input status

ENABLE if 1: ON, 0:OFF

F_SET if 1: enable set forcing with SETPOINT_BMS data, 0: disable temperature set forcing

F_V2 if 1: enable parameter forcing with SET_POW1_BMS data, 0: disable inow fan speed forcing

F_V1 if 1: enable parameter forcing with SET_POW2_BMS data, 0: disable expulsion fan speed forcing

F_SEA if 1: enable season forcing with SEASON_BMS data, 0: disable season forcing

F_M if 1: enable functioning mode change with MODER_BMS data, 0: disable mode change

F_A if 1: remotely enable ON/OFF via ENABLE bit

Note: each data modication made by BMS is followed by the storage in eeprom of the value.

3 OPERATING MODE

3.1 AUTO MODE

This functioning mode involves the renewal of room air using the maximum ow rate of inow and expulsion fans. In order to activate this procedure the user must press the

Mode/Select key on the interface panel until the“AUTO” icon appears.

The duration of this function depends on the Ct parameters (cleaning time) settable from the user interface panel of the machine. When this time expires, the system goes back

to the functioning mode that was set prior to the room cleaning procedure.

3.2 MANUAL MODE

This functioning mode involves the activations of inow and expulsion fans according to the Po1 and Po2 parameters. In order to activate this procedure the user must press

the Mode/Select key on the interface panel until the“AUTO” and “AUX”icons appear.

The Po1 and Po2 parameters indicate a ow rate percentage (referred to the maximum of the installed fans) to be ensured in a one-hour functioning cycle. These parameters

can, therefore, be linked to the air renewal (moved air volume) that is to be ensured to the room.

The control will provide a constant functioning reference such as to ensure a constant instantaneous ow rate:

PISTx = Pox * PMAX

where

PISTx: inow or expulsion instantaneous ow rate

Pox: it can be Po1 or Po2 depending on whether it is the inow or expulsion fan

PMAX: maximum fan ow rate

3.3 AUX MODE

This functioning mode is entirely similar to manual mode, but allows the user to enable any resistive loads present in the machine for the anti-freeze function and production

of neutral air (the inow air temperature must tend to that of the expelled air). In order to activate this procedure the user must press the Mode/Select key on the interface

panel until the“AUX” icon appears