Operating Range

- The applicable operating range for unit with economizer features same like normal unit. However, the restriction of fresh air opening will occur in high ambient or low ambient in order to ensure the reliability of the unit.

- For high ambient in cooling operation, fresh air opening will be restricted at not more than 15%. When the outdoor DB temperature is more than 50°C, the fresh air opening will be closed to 0%.

- For low ambient in heating operation, fresh air opening will be restricted at not more than 10% to avoid cold draft issue.

- It is recommended to select an appropriate fresh air opening by considering the whole operating range of the air-conditioner unit in both cooling and heating operation.

-На основе разности температур.

-3 диапазона работы (режим

-охлаждения):диапазон Operating condition Управление

компрессоромУправление клапаном(OA)

1 TOA ≤15°C Off От 0% до 85%

2 TOA> 15°C &

TOA ≤TRA-3°C

On если Tset не достигнута Мин. величина подачи свежего воздуха 0%

3 TOA ≥TRA-3°C On / Off Мин. величина подачи свежего воздуха 10%

TOA: температура наружного воздуха

TRA: температура возвратного воздуха

Tset: уставка

Логикауправления

Плата экономайзера

Economizer Control Setting

Для включения функции экономайзера выполните установку переключателя DIP SW4-ВКЛ (по умолчанию ВЫКЛ) на главной плате контроллера и выберите установку “Economiser /(1) для параметра G6На плате экономайзера расположены 4 dip-переключателя и 3 перемычки, которые позволяют выбрать требуемые установки в зависимости от условий

Economizer Control Setting-Dip Switch 1: мин. процент открытия клапана для подачи свежего воздуха (нагрев)

*По умолчанию: 0% (все OFF).

-Dip Switch 2: ин. процент открытия клапана для подачи свежего воздуха (охлаждение)-:

* По умолчанию : 10% (все OFF).

Dampers Opening (%) SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW85 ON OFF OFF OFF OFF

Reserved10 OFF ON OFF OFF OFF15 OFF OFF ON OFF OFF20 OFF OFF OFF ON OFF25 OFF OFF OFF OFF ON

Dampers Opening (%) SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW80 ON OFF OFF OFF OFF

Reserved5 OFF ON OFF OFF OFF

15 OFF OFF ON OFF OFF20 OFF OFF OFF ON OFF25 OFF OFF OFF OFF ON

Economizer Control Setting

-Dip Switch 3: CO2 PPM level threshold value selection:

PPM (%) SW1 SW2 SW3 SW425 ON OFF OFF OFF50 OFF ON OFF OFF75 OFF OFF ON OFF

100 OFF OFF OFF ON

*Default: 0% (no selection, all OFF).- Dip Switch 4: Type of operation, which include the following selection:-

DIP Switch 4 OFF ON

SW1 Differential temperature operation No Function

SW2 Economizer Mode Fresh Air

SW3 Overcooled protection is not activated Overcooled protection is activated

*Default: OFF for SW1, SW2 & SW3

CAUTION: Dip Switch 1, 2 and 3 allow only 1 pin selection. Multiple pins selection will cause error and the operation will go back to default setting. While Dip Switch 4 allow multiple pins selection.

Economizer Control Setting

- Shunt jumper 1, 2 and 3: Minimum fresh air opening setting in fan mode, where by the selection of different pins will give different opening setting. Refer the table below for different fresh air opening selection:-JP1 = shunt jumper 1 JP2 = shunt jumper 2 JP3 = shunt jumper 3

Fresh air opening (%) JP1 JP2 JP30 (default) OFF OFF OFF

10 OFF OFF ON20 OFF ON OFF30 OFF ON ON40 ON OFF OFF50 ON OFF ON70 ON ON OFF85 ON ON ON

Legend: OFF = Short pin 2 and pin 3 ON = Short pin 1 and pin 2