AERMEC ANL-H 040 설치 매뉴얼 - 페이지 7

{카테고리_이름} AERMEC ANL-H 040에 대한 설치 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. AERMEC ANL-H 040 11 페이지. Chillers; reversible heat pumps; condensing units

페이지 인쇄

ANL-ANLH 020-202

WARNING

Before carrying out the following

checks ensure the unit is discon-

nected from the power supply.

Ensure that the main isolator is in

the OFF position and locked in that

position with appropriate warning

label attached. Before starting the

procedures check for the absence of

voltage with a voltmeter or phase

checker.

8.1.

It is reminded that for units of this series, if requested

by the Aermec client or the legal owner and only

on ITALIAN territory, free start-up is provided by the

regional Aermec technical assistance service. The

start-up must be previously agreed based on the

start-up all the works (electrical and hydraulic connec-

completed.

8.2.

8.2.1.

PRELIMINARY CHECKS BEFORE POWER

ING UP

Check:

support base.

Minimum clearance spaces have been ob-

served.

that the unit is correctly earthed.

8.2.2.

CHECKS TO BE DONE WHEN POWERED UP

Apply power to the unit by turning the main iso-

lator to the ON position. The display will power

up after several seconds after applying power,

check that the operating status is on OFF (OFF BY

KEYB on the lower part of the display).

Check with a tester that the power supply volt-

ages on the phases U-V-W are 400V ±10%, check

that the phase imbalance is not greater than 3%.

Check that the connections made by the installer

comply with the documentation.

Check that the compressor crankcase heater(s)

are operating by measuring the increase of oil

sump temperature. The heater(s) must be in

operation for at least 12 hours before starting

the compressor, and in all cases the sump oil

temperature must be 10-15 K above ambient

temperature.

1608. 6755441_02

HYDRAULIC CIRCUIT

Check that all hydraulic connections have been

correctly installed, that the instructions on the

labels have been followed, and that a mechani-

cal filter has been installed on the inlet to the

evaporator. (Mandatory component otherwise

the warranty will be voided).

Confirm that the pump(s) are operating and that

the flow rate is sufficient to make the contact on

the flow switch.

Check the water flow rate by measuring the

differential pressure across the evaporator inlet

and outlet and calculating the flow from the

evaporator pressure drop diagram provided in

the documentation.

Check the correct functioning of any flow

switch installed; close the isolating valve on the

evaporator outlet and observe the result on the

unit display panel; open the valve and reset the

flow trip alarm.

8.3.

After having rigorously followed the above checks it is

possible to start the unit:

Close the electrical panel.

Turn the main isolator to ON.

Press the key ON

for 3 seconds to start the

unit.

Pressing the key ON

temperature and the operating mode of the unit.

Check the operating setpoint parameters and

reset any alarms present . After a few minutes

the unit will start.

8.3.1.

CHECKS WITH THE UNIT RUNNING

REFRIGERANT CIRCUIT

- That the compressor input current of the compres-

sors is less than that indicated in the table of electri-

cal data.

- That in three phase models the compressor noise is

not abnormal, indicating a reverse rotation. In this

case reverse one of the phases.

- That the voltage values are within the determined

limits and that the phase imbalance (three phase

power) is less than 3%.

- Superheat

Compare the compressor suction temperature with

a contact temperature sensor reading with the

temperature of the low pressure gauge (saturated

suction temperature corresponding to the evaporat-

ing pressure). The difference between these two

temperatures is the superheat value. The optimal

values are between 4 and 8 K.

- Discharge temperature

If the values of sub-cooling and superheat are

normal the temperature measured in the discharge

line from the compressor must be 30/40 K above

the condensing temperature.

SAFETY AND CONTROL DEVICES

CHECK:

- The manual high pressure pressostat, which stops

the compressor and generates and alarm when the

discharge pressure exceeds the preset value. The

correct operation is checked by closing the refriger-

ant isolating valve to the heat exchanger (in cooling

mode) and keeping a check on the high pressure

gauge, verify the operation corresponds to the rated

value. Warning: in the event the pressostat does

not operate at the rated value immediately stop

the compressor and investigate the cause. Reset is

manual but can only be done when the pressure

drops below the differential setting. (For the values

of the trip and differential setting refer to the tech-

nical manual).

is from the water temperature sensor leaving the

temperature is too low. The operation of the anti-

setpoint value until it is above the temperature of

leaving water and checking the water temperature

with a high precision sensor. Confirm that the unit

stops and generates the responding alarm. After this

value.

displays the water

8.4.

8.5.

Access the USER SET menu with the key

confirm the password 000 pressing key

arrow key display the parameter STA index 0 of the

menu and select pressing the key

keys select the value for either: VALUE 0 cooling

mode operation, or, VALUE 1 heating mode operation.

Confirm the selection pressing key

menu with the key

8.6.

If the PR3 remote panel (accessory) is installed it must

be enabled after making the electrical connections.

8.6.1.

Access the INSTALLER SET menu with the key

insert the menu access password:

030. Using the arrow keys

PAN index 9 of the menu and select pressing the key

. Using the arrow keys select from the desired

values of:

• SEASON CHANGE from the unit circuit board

• ON/OFF CONTROL from the PR3

• SEASON CHANGE controlled from the PR3

• ON/OFF CONTROL from the unit

CHANGE OF SEASON

CHANGE OF SEASON FROM UNIT CIR

CUIT BOARD

and

. Using the

. Using the arrow

and exit the

CHANGE OF SEASON FROM PR3 RE

REMOTE PANEL ENABLING

display the parameter

and