REMKO RVS 100H INOX, Operation Manual

Configuration antifreeze protection parameters

It can be necessary to reconfigure the antfreeze protection parameters 

when using a water-glycol mixture. Under menu item -

A-

 the parameter 

A 01 can be changed within the limits of parameter A 04 and A 07.

Factory setting: 

Activation antifreeze protection fault   Parameter A 01 = 

  +2.0 °C

Upper antifreeze protection setting 

Parameter A 04 = 

  +4.0 °C

Lower antifreeze protection setting 

Parameter A 07 = 

- 40.0 °C

The following program sequence must be programmed.

The following values must them be input:

Configuration parameter Ar 03

0% Ethylene 

glycol 

(Factory setting)

10 % Ethylene 

glycol 

(Password)

20 % Ethylene 

glycol 

(Password)

30 % Ethylene 

glycol 

(Password)

35 % Ethylene 

glycol 

(Password)

Value A 01

4°C

0°C

-4°C

-13°C

-17°C

short-term

short-term

short-term

min. 5 sec.

+

...

repeated

short-term

short-term

short-term

short-term

+

Propor-

tion 

glycol

Antifreeze
protection 

+-2°C

Correction factors when using  

a mixture of glycol* and water

Cooling 

output

Compressor input 

Cooling         Heating

Medium 

flow

Pressure 

loss

Vol. %

°C

K

L

K

P cooling

K

P heating

K

V

K

D

0

0

1

1

1,012

1

1

20

-9

0,981

0,988

1,012

1,040

1,19

35

-21

0,971

0,982

1,018

1,090

1,35

40

-26

0,968

0,981

1,019

1,105

1,51

* 

We recommend using an ethylene glycol mixture. Observe the safety and product data sheets 

    for the glycol type being used.

This mixture ensures frost protec-
tion to –20°C; at lower tempera-
tures, an ice porridge forms which 
has no more expansion effect. 
The toxicologically harmless 
propylene glycol should be used if 
there is a risk that the medium can 
come into contact with drinking 
water or food stuffs. To maintain 
the expansion effects, a proportion 
of 38% is necessary as a rule

Diaphragm expansion vessel

To avoid pressure fluctuations 
during non circulation because of 
temperature changes, expansion 
vessels filled with nitrogen (moisture 
neutral) must be integrated in the 
system. 

The unit’s standard equipment 
includes one expansion vessel. The 
preliminary pressure must be set on 
the system; an increase in volume 
or, in the event of a cooing-heating 
system, the installation of another 
expansion vessel may be necessary.

Safety valve

Safety valves limit excess operating
pressure due to over heating or 
overfilling of the operating me-
dium. The valve outlet requires 
unobstructed drainage into a drain 
pipe. Applicable local disposal 
regulations 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. 

Compensators

Compensators are used to connect
lines to the unit to prevent  
vibration in the system from been 
transmitting to other parts of the 
system.

Compensators

Ball valve

Compensator

Structural 
fastening

unit connection

REMKO RVS...H (INOX)

24