Aermec Gr3 User manual

USAGE MANUAL

Electronic regulation for chillers

and air and water cooled heat pumps

ISO 9001 - Cert. n° 0128/4

IGR3FX. 0810. 4724210_00

GR3

MANUEL D'UTILISATION

Réglage électronique pour producteurs d'eau glacée

et pompes à chaleur à condensation par air et par eau

BEDIENUNGSANLEITUNG

Elektronische Regelvorrichtung für Kaltwassersätze

und Wärmepumpen mit Luft- und Wasserkondensation

MANUAL DE USO

Regulación electrónica para enfriadores

y bombas de calor condensadas por aire y por agua

Il codice 4724210_00

sostituisce i seguenti codici:

6872102_01 • 6872103_01 • 4572701 •

4572702 • 4844510 • 6872120

ItalianoItaliano ItalianoItaliano

English Français Deutsch Español

1. Characteristics of the regulation............................ 3

2. User interface................................................................. 3

3. Control panel description ........................................... 4

4. Reading menu.................................................................. 5

5. Turning on/off (local mode)....................................... 7

6. Season change................................................................ 7

7. Working temperature setting.................................. 8

8. Setting menu..................................................................13

9. Control settings for remote panel........................15

10. Alarms ..............................................................................16

Summary

iThe device must be installed in compliance with the local legislation currently

in force in the country of destination.

possible to control, from a distance, the

turning on and off, the setting of working

mode (cold-hot), and the visualisation of

the alarms summary with a red indicator

light (alarms).

• PR3

Simplified remote panel, follows the

base controls that can be operated

remotely from up to 30m.

CHARACTERISTICS OF THE REGULATION1.

The command panel of the unit allows the

quick setting of the machine's operating

parameters, their visualisation at any

time, and the immediate summary of the

machine's operating status. The display

is made up of 3 figures and 4 LEDs to

signal, the type of working, the visualisa-

tion of the parameters set or measured,

and any alarms that have been activated.

The card memorises all the settings

saved with each modification and used

for re-ignition after a switch-off owing

to lack of voltage. With the installation

of the remote control panel PR3, it is

Remote connections

USER INTERFACE2.

CONTROL PANEL DESCRIPTION3.

Key Meaning

1Visualisation of machine probe readings

2Visualisation of triggered alarm list

3Visualisation of operational parameters menu

4Key to change operational parameters

5 and 6 Navigation keys

Sets the unit control, which can be local (L), from the panel on board the machine, or remote (R), from

remote panel or supervisor. The active setting is indicated by the switching on of the corresponding

indicator light.

8Sets heating or cooling mode;

9Turns the machine on or off by setting it to STAND-BY, (only the electronic card and the electric heater

are powered);

10 Cancels machine alarms and restarts it (for further information, see alarm table)

11 Led indicator of current alarms

12 Led indicator of current defrosting mode

13 Led indicator of operating compressor

FIRST TIME THE MACHINE IS SWITCHED ON

The first time the machine is switched on, it carries out a self-

configuration operation and a series of checks through which

operating parameters and electrical connections of the ma-

chine are checked. After the autotest, the company logo and

the machine type are displayed for some seconds. Then, the

panel is prepared for displaying the machine probe readings

(key activated).

Reading acronym Meaning NRA NRC NRL NBW NLW

TIA Read temperature at the evaporator inlet

TIAH Temperature read at the condenser inlet

TAE Outside air temperature

TUA C1

Temperature read at evaporator outlet for

circuit 1 (or the single-evaporator model)

DELTA C1

Temperature between evaporator inlet and

outlet for circuit 1 (or the single-evaporator

model)

TUAH C1 Temperature read at the condensator

outlet for circuit 1 or single-condenser.

DELTA C1

Temperature between condenser inlet and

outlet for circuit 1 (or the single-evaporator

model)

P.B.C1 Low-pressure reading in circuit 1

P.A.C1 High-pressure reading in circuit 1

TL C1 Liquid temperature in circuit 1

P.IN S1 Calculation of defrosting initial pressure

for circuit 1

ATTESA C1 Minimum waiting time to restart

compressor 1

ATTE.C1A Minimum waiting time to restart

compressor 1A

ATTE.C1B Minimum waiting time to restart

compressor 1B

P.B.C2 Low pressure reading in circuit 2

TUAH C2 Temperature read at the condenser

outlet for circuit 2

P.A.C2 High-pressure reading in circuit 2

TL C2 Liquid temperature in circuit 2

READING MENU4.

4 4 4

4 4

4 4 4 4 4

j j

CPx6

Cx2 Cx2

Reading acronym Meaning NRA NRC NRL NBW NLW

P.IN S2 Calculation of defrosting initial pressure

for circuit 2

ATTESA C2 Minimum waiting time to restart

compressor 2

ATTE. C2A Minimum waiting time to restart

compressor 2A

ATTE. C2B Minimum waiting time to restart

compressor 2B

SBRINA C1 Minimum waiting time before defrosting

circuit 1

SBRINA C2 Minimum waiting time before defrosting

circuit 2

TEV1 Gas temperature read at evaporator

inlet of circuit 1

TEV2 Gas temperature read at evaporator

inlet of circuit 2

TAC Temperature read in storage

TIR Reading of inlet temperature for heat

recovery

TUR1 Temperature read at the outlet for heat

recovery of circuit 1

TUR2 Temperature read at the outlet for heat

recovery of circuit 2

TFC Temperature read at the freecooling

battery inlet

4 4 4 4 4

j j

4 4

CPx6CPx6CPx6

4 4 4

ver T ver T

ver T

ver T ver T

ver T

ver T ver T

ver T

ver T ver T

Free

KEY

Reading available both in cooling only and heat pump models

Reading available only in 6-compressor models

Reading present in all versions, but available only in heat pump models

Reading available only in bi-condenser models

Reading available in models with Total Recovery

Reading available only in FREE COOLING models

Cx2

ver T

Free

CPx6

TURNING ON/OFF (5. local mode)

SEASON CHANGE6.

Image Procedure to be adopted

TURNING ON:

For unit commissioning, press only ON key. When the led is on,

the unit is ready for operation.

TURNING OFF:

Turn it off immediately with the same button.

Only if the PR3 accessory is installed, the unit shall be completely

off after seven seconds.

Image Procedure to be adopted

To activate the season change, just press the key indicated next.

So that the operation is correctly finished, the machine shall be

activated both in remote or in local.

Two symbols are present in the "season change" key:

- The symbol identifies the heat pump operation;

- the symbol  identifies cooling operation.

SET

DISPLAY OF THE FUNCTIONING PARAMETERS

For displaying operation parameters, the key

SET

is pressed;

the indicator light key

SET

is on and the parameters indicated

in chapter “SETTING MENU” are displayed. Parameters can be

sequentially displayed by using the arrow keys

. The

writing “Set Setting” appears on the first line and the set value

on the second line.

To change the set parameter, press the key and the key

led will also be on. The setting displayed can be modified by using

the arrow keys.

The wording on the first line changes to “Modified Setting”. By

pressing the key again, the modification is saved and, by

using the arrow keys, it is possible to scan set parameters again

to find a new parameter to be changed.

WORKING TEMPERATURE SETTING7.

HEATING SET POINT SETTING

Image Procedure to be adopted

To access the parameter menu, first press the SET key and

browse through by means of the arrow keys up to "Heating Set".

Then, to set the COOLING SET value, just press the screwdriver

key and enter into the modification of the set involved.

At this stage, by increasing or decreasing its value, the parameter

can be changed by means of the arrows (+ and -). Once the desired

temperature is decided, just confirm the operation by pressing

again the screwdriver key.

SET

SETTING

Hot Set +50.0"C

SET

LRSETTING ADJUST

Hot Set +50.0"C

SET

SETTING ADJUST

Hot Set +49.9"C

COOLING SET POINT SETTING

Image Procedure to be adopted

To access the parameter menu, first press the SET key and

browse through by means of the arrow keys up to "Cooling Set".

Then, to set the COOLING SET value, just press the screwdriver

key and enter into the modification of the set involved.

At this stage, by increasing or decreasing its value, the parameter

can be changed by means of the arrows (+ and -). Once the desired

temperature is decided, just confirm the operation by pressing

again the screwdriver key.

SET

SETTING

Cold Set +20.0"C

SET

LRSETTING ADJUST

Cold Set +20.0"C

SET

SETTING ADJUST

Cold Set +19.9"C

N.B.

There is a second cooling operation set point (parameter: 2nd C.

set). and a second heating working set point (parameter: 2nd H.

set). Both parameters (2nd C. set - 2nd H. set) can be operated

when the digital input (M11 3-4) is closed. For further information,

consult the installer or the Technical After Sales Service.

Cooling set

point values

Minimum -10 °C

Maximum 20°C

Heating set

point values

Minimum 30°C

Maximum 50°C

SETTING OF TIME AND DAY OF THE WEEK (available with PGS accessory only)

Image Procedure to be adopted

To access the parameter menu, first press the SET key and

browse through by means of the arrow keys up to TIME and DAY

visualisation.

To set the TIME and DAY, just press the screwdriver key. At this

stage the writing "ENTER CODE" will be displayed. The code is that

by default (00 00 00).

Just press the screwdriver key to confirm. Thus, the modification

of the set involved is accessed.

By means of the arrow keys, first the time is modified (first led on).

Once the time is decided, press the key SET to confirm and the

third led will be automatically on. Then, modify the day of the week

with the arrow keys.

Press the screwdriver key and the display visualisation will shift to

DAY, MONTH and YEAR setting. With the arrow keys and the first

led on, the day can be modified; with the second led on, the month

is modified and with the third, the year.

Once time, day, month and year are set, just press the screwdriver

key again to save the set values. The display will return to the initial

screen.

SET

SETTING

00:00 Monday

SET

INSERT CODE

00 00 00

SET

LRSETTING ADJUST

00:00 Monday

SET

SETTING

15:30 Monday

SET

SETTING ADJUST

10 07 08

SET

SETTING

15:30 Monday

TIMER OPERATION MODE (available with PGS accessory only)

Image Procedure to be adopted

To access the parameter menu, first press the SET key

and browse through by means of the arrow keys up to the

parameter "Timer".

Press the screwdriver key. At this stage, the writing "ENTER

CODE" will be displayed. The code is the one by default (00

00 00). Just press the screwdriver key for a second time

to confirm.

By acting on the arrows, move to the programming mode

desired. There are three alternatives:

(NONE - DAY -WEEK).

NONE mode:

The programming timer is disabled.

DAY mode:

It is possible to set, along the day, two operation time bands.

- The Daily setting is visualised

- Monday to Sunday settings are not visualised.

WEEK mode:

It is possible, for each day of the week, two operation time

bands.

- Monday to Sunday settings are visualised.

- The Daily setting is not visualised

SET

SETTING

Timer NONE

SET

LRINSERT CODE

00 00 00

SET

SETTING

Timer NONE

SET IMPOSTATO

Timer NONE

SET IMPOSTATO

Timer DAY

SET IMPOSTATO

Timer WEEK

Once the desired option is selected, con-

firm by pressing the screwdriver key.

N.B. ON/OFF TIMER:

To program the timer, it is necessary

to have access either to the remote

or the local panel.

TIME BAND SETTING

Day mode

Image Procedure to be adopted

Press the SET key, act on the arrow keys until the “Daily” setting

is visualised.

Press the screwdriver key. At this stage, the writing "ENTER CODE"

will be displayed. The code is that by default (00 00 00).

Just press the screwdriver key a second time to confirm. At this

stage, the menu to modify time bands is entered.

Then, act on arrow keys to change START 1 values (at the same

time, STOP 1 values will be also in progress). Confirm with the

screwdriver key to modify only the STOP 1.

With the arrow keys, modify STOP 1 values and provide final

confirmation by pressing the screwdriver key.

The second time band is now visualised. Act on arrow keys to

change START 2 values (at the same time, STOP 2 values will

be also in progress). Confirm with the screwdriver key to modify

only the STOP 2.

With the arrow keys, modify STOP 2 values and provide final

confirmation by pressing the screwdriver key.

SET

SETTING

Day

SET

INSERT CODE

00 00 00

SET

START 1 00:00<

STOP 1 00:00

SET

START 1 00:20<

STOP 1 00:20

SET

START 1 00:20

STOP 1 00:50<

SET

START 2 06:00<

STOP 2 06:00

SET

START 2 06:00

STOP 2 06:30<

TIME BAND SETTING

Week mode

Image Procedure to be adopted

Press the SET key, act on the arrow keys until the “Monday”

setting is visualised. With the arrow keys, the days from "Monday"

to "Sunday" will sequentially appear.

Press the screwdriver key to select the day. Thus, the menu for

that day is entered.

Then, act on arrow keys to change START 1 values (at the same

time, STOP 1 values will be also in progress). Confirm with the

screwdriver key to modify only the STOP 1.

With the arrow keys, modify STOP 1 values and provide final

confirmation by pressing the screwdriver key.

The second time band is now visualised. Act on arrow keys to

change START 2 values (at the same time, STOP 2 values will

be also in progress). Confirm with the screwdriver key to modify

only the STOP 2.

With the arrow keys, modify STOP 2 values and provide final

confirmation by pressing the screwdriver key.

The display visualisation will return to the initial "SET SETTING -

Monday". At this stage, it is possible to move the rest of the days

one by one and program the timer with the procedure previously

shown.

SET

SETTING

Monday

SET

SETTING

Monday

SET

START 1 00:00<

STOP 1 00:00

SET

START 1 00:20<

STOP 1 00:20

SET

START 1 00:20

STOP 1 00:50<

SET

START 2 06:00<

STOP 2 06:00

SET

START 2 06:00

STOP 2 06:30<

INSTALLATOR SET

Description Default value

Tot. diff. Proportional temperature band within which the compressors

are activated and deactivated 5°C

Set AG

Antifreeze Alarm temperature, EV side (water outlet temperature).

3°C

Esc.B.P. Low Pressure Alarm bypass time, after the compressor start-

up. 3’

AG Evap Antifreeze setting for evaporator input gas temperature.

Can be overridden. -8 °C

B.AG Evap Evaporator antifreeze alarm bypass from On CP, end defrosting. 20 sec.

CP1 Power

% power of compressor 1 compared with the machine 100% value.

25%

CP2 Power

% power of compressor 2 compared with the machine 100% value.

25%

CP1A Power

% power of compressor 1A compared with the machine 100% value.

25%

CP2A Power

% power of compressor 2A compared with the machine 100% value.

25%

CP1B Power

% power of compressor 1B compared with the machine 100% value.

CP2B Power

% power of compressor 2B compared with the machine 100% value.

CP 1 Time Compressor 1 operating hours.

This value can only be reset. 0

CP 2 Time Compressor 2 operating hours.

This value can only be reset. 0

OreCP1A Number of worked hours for the 1A compressor.

This value can only be reset. 0

OreCP2A Number of worked hours for the 2A compressor.

This value can only be reset. 0

OreCP1B Compressor 1B operating hours.

This value can only be reset. 0

OreCP2B Compressor 2B operating hours.

This value can only be reset. 0

SETTING MENU8. SET

USER SETTING Description Min. Default Max. Water/Air

Water/Water

Cold Setting Water inlet temperature in Cold

mode operation. -10 °C 7.0°C 20°C

Heating Setting Water inlet temperature in Cold

mode operation. 30°C 50°C 50°C

2nd C. Set Second Cooling set. -10 °C 11°C 20°C

2nd H. Set SECOND HEATING SET. 30°C 45°C 50°C

Remember that the range within which these parameters are set

is provided by the machine operating limits. The minimum and

maximum values to be set only represent one characteristic of

regulation.

WARNING

The settings listed in the following table can be visualised by the user,

but they can be only modified by the technical After Sales Service.

If these settings are modified by non-authorised personnel, the war-

ranty shall be considered void.

INSTALLATOR SET

Description Default value

Cond.low Condensation regulation setting corresponding to the external

temperature T.C.low 17 bar

Diff.low Condensation regulation differential setting corresponding to the

external temperature T.C.low 20 bar

Cond.hig Condensation regulation setting corresponding to the external

temperature T.C.high 17 bar

Diff.hig Condensation regulation differential setting corresponding to the

external temperature T.C.high 12 bar

Cond. PC Corresponding condensation regulation setting in the heat pump 45 bar

Diff. PC

Condensation regulation differential corresponding to the heat pump

5 bar

T.C.low Low outside temperature limit for the selection of the setting and

selection differential -5 °C

T.C.high High outside temperature limit for the selection of the setting and

selection differential 40°C

Volt Min Minimum DCP output voltage when cold 1V

DcpR Off High pressure value below which DCP output is 0 volts during low

temperature pre-ventilation. 22 bar

DcpR On High pressure value above which DCP output is 10 volts during

low temperature pre-ventilation 23 bar

S. R Heating Thermostat setting to manage the water inlet recovery. 50°C

D.Tot.R Setting to determine the distance between one step and the

following one, in the recovery operation setting. 5°C

T. OutS. Temperature (read by the probe on the fluid) above which the

DEFROSTING action can END 20°C

Number of

resistors

Number of supplementary heaters (number of steps).

Set Res External air setting under which electrical elements are enabled 5°C

Power Res % power of each supplementary heater step compared with the

machine 100 % value 0

Set Ta CP

Setting in comparison with the external air. Below this value,

compressors will be disabled if P.C. supplementary heaters are

present. -5 °C

Numb. of pumps Total number of evaporator pumps 0

Numb. of pumps

ON No. of pumps switched on at the same time. 0

In/Out H20 Temperature regulation selection on the water inlet/outlet IN

Time Int Integration time (integral error calculation) for regulation in water

outlet. 600

CP1-CP2B

Compressor override mask if the power limit control is active:

CP1-CP2-CP1A-CP2A-CP1B-CP2B 111111

V.max FC Maximum DCP voltage in freecooling 10V

AG pump Enabling of the pump powering up as antifreeze protection together

with the evaporator electrical elements. OFF

MultiTRIO Enabling at the multichiller control (network control of more than

one chiller with master and slaves) OFF

Language Language selections used: Italian, English, German, and French - - -

INSTALLATOR SET

Description Default value

Code New access code to modify protected Settings.

Initially the code is 00-00-00. 000000

Time * Time, day of the week, month, year - - -

Timer Setting *Timer operation mode:

disabled, daily, weekly none

Daily *Timer setting: daily

Visualised if Timer Setting =Day. - - -

Monday *Weekly timer setting