ThermoFlex-Manual.pdf - 第39页

ThermoFlex 3-1 Thermo Scientiﬁc Section 3 Installation Ambient T emperature Range* 10°C to 40°C (50°F to 104°F) Relative Humidity Range 10% to 80% (non-condensing) Operating Altitude* Sea Level to 8000 feet (2438 meters)…

Section 2

2-20 ThermoFlex

Thermo Scientiﬁc

ThermoFlex 3-1

Thermo Scientiﬁc

Section 3 Installation

Ambient Temperature Range* 10°C to 40°C (50°F to 104°F)

Relative Humidity Range 10% to 80% (non-condensing)

Operating Altitude* Sea Level to 8000 feet (2438 meters)

Overvoltage Category II

Pollution Degree 2

Degree of Protection IP 20

Never place the chiller in a location where excessive heat, moisture,

inadequate ventilation, or corrosive materials are present.



Note Refer to the nameplate information on the rear of the chiller. 

Air-cooled chillers retain their full rated capacity at 20°C setpoint in ambient

temperatures up to 25°C (77°F). For ambient temperatures above 25°C please

de-rate the cooling capacity 3% for every 1°C above 25°C (77°F), up to a

maximum ambient temperature of 40°C (104°F). Note that when operating

at a process temperature lower than 20°C the de-rate percentage may increase

due to additional gains from losses to ambient.

Note Depending on the setpoint and ambient temperatures, there may be a

heat gain or loss through the plumbing resulting in a variation from setpoint

temperature at the application inlet. Applications with large temperature

variations between ambient and setpoint temperatures, and/or long plumbing

lengths, may require additional insulation.



ThermoFlex2500 air-cooled chillers have a two-speed fan. Should the chiller's

internal ambient temperature reach 50°C for 30 seconds, or reach 53°C, the

fan speed will switch from slow speed to high speed to maintain internal

temperatures within acceptable limits. When the temperature reaches 44°C or

below for at least 15 minutes the speed will return to low. When in high speed



Note High speed is required for the chiller to achieve its 2500 watt cooling

capacity. At high-end operating conditions the fan can be set to run at high

speed all the time using the controller's Setup Loop, see Section 4.



Site Requirements

*Because of the decrease in air density, maximum temperature for the air entering an air-cooled

ThermoFlex is reduced by 1°C per 1,000 feet above sea level. In addition, cooling capacity is

reduced 1.2% per 1,000 feet above sea level.

CAUTION

Section 3

3-2 ThermoFlex

Thermo Scientiﬁc

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drain back into the chiller and cause spillage. Thermo Fisher offers an

anti-drainback kit to prevent any spillage, see Section 5.

Air-cooled chillers can be installed with both sides blocked, or one side and

the rear. See Figure 3-1. The front of the chiller needs a minimum clearance

of 24". Air will enter the front of the system and exit through the sides and

rear.

Having two sides blocked can impact the chiller's performance due to

 

ensure that the following requirements are met:

Process Setpoint Temperature: Below 30°C (86°F)

Ambient: Below 40°C (104°F)

Before operating the chiller in conditions outside any of those listed on this



Support to review your installation.

Figure 3-1 Minimum Clearance