Bedienungsanleitung REMKO RVS DC serie 50-80-130-180 (Seite 23 von 44) (Englisch)

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Anti-freeze protection (accessories)

As a medium for a cold water

system, a water-glycol mixture

is used as a rule. Depending on

the use to which the glycol type

and quantity is put, the viscosity

changes, the loss in pressure

increases and the unit's cooling

or heating capacity reduces.

All system components must be

approved for use with glycol.

As a rule, the addition to the

water of ethylene glycol, in a

proportion of 34%, with inhibitors

for corrosion protection is

recommended.

Diaphragm expansion vessel (MAG)

To avoid pressure ﬂuctuations

during standstill because of

temperature changes, diaphragm

expansion vessels ﬁlled with

nitrogen (moisture neutral) must

be integrated in the system.

Safety valve

Safety valves limit excess operating

pressure due to excess warming

or overﬁlling of the operating

medium. The valve outlet requires

unobstructed draining into a drain

line. Applicable local disposal

ordinances must be observed

if glycol is used.

The standard scope of delivery

for the unit includes a safety

valve; an additional valve may

be necessary at a suitable point.

Compensators

Compensators are used to connect

lines to the unit to prevent vibration

in the chiller from transmitting

to other system components.

Compensators

Shut-off valve Compensator

Static fasten-

ing

Unit connection

Air bleeding valves

The unit has manual air bleeding

valves. The unit can be bled here

after the system has been ﬁlled.

Automatic bleeding valves must

also be installed at the highest

point in the collector line.

Dirt trap

A rinsable dirt trap must be

installed upstream from the unit

intake. The mesh size should not

be less than 10 mesh/cm². Shut-

off valves should be installed

upstream and downstream from

the dirt trap.

External medium storage tank

If, for example, the required

capacity of the cold water

consumer is signiﬁcantly less

than the cooling capacity

generated by the chiller, an

increase in the medium content

is recommended. As an example,

the medium piping can be

oversized or an additional

storage tank installed to increase

compressor operating time.

A storage tank should, as a rule,

be provided if the minimum

medium volume is not reached.

Shut-off valves

As a rule, in cold water systems,

shut-off valves with full admission

should be used. For the purpose

of servicing, medium inlet and

medium outlet must be equipped

with shut-off valves (if necessary

safety valves).

Glycol-tolerant air bleeding

valves are necessary when

using media that contain

glycol.

CAUTION

Improperly installed or missing

dirt traps can cause fouling

of the plate heat exchanger.

CAUTION

During use and

disposal, product and safety

data sheets for the glycol

type being used as well

as applicable local ordinances

(e.g. Water Resources Act)

must be observed.

CAUTION

Use the required type and

mix ratio appropriate for

the application area to ensure

the freezing point.

CAUTION

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REMKO RVS DC serie 50-80-130-180 Seite 23

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