587983
27
Zoom out
Zoom in
Previous page
1/60
Next page
Minimum / maximum volume
flow rate
The circulation pump of the chiller
generates a constant medium
volume flow rate; a pressure loss
in the system and in the chiller is
the result. The differential pres-
sure switch / flow monitor in the
chiller measures the medium pres-
sure loss through the evaporator
and switches off the unit in case
the minimum volume flow rate is
undershot.
In addition, a medium volume flow
rate that is too high must not be
exceeded (maximum volume flow
rate).
To guarantee a constant volume
flow rate, three way valves with a
bypass, a hydraulic switch for the
setup of a primary and secondary
circuit, or a bypass that depends
on the volume flow rate are re-
quired.
Pressure and temperature indica-
tors
The pressure and temperature in-
dicators to be installed in the inlet
and outlet on site are used to set
the medium volume flow rate. The
indicators should be lockable.
The chiller contains temperature
sensors in the medium inlet, me-
dium outlet, and condenser. Using
the controller, the sensor values
can be queried.
Line regulating valves
Using line regulating valves
provided on site, the individual
pressure losses calculated in the
pipe network design are adapted
to each individual unit in the
overall system. Due to the pressure
loss, the nominal volume flow
rates of the medium are adapted
to the required values.
Flow monitor / differential pres-
sure monitor
Flow monitors are used to monitor
the minimum medium volume
flow rate and are installed in the
standard version of units with the
medium storage tank (KWG...SP/
KWP...SP).
For units without a medium stor-
age tank (KWG, KWG...P, KWP,
KWP...P), flow monitors must
be installed on site and adjusted
according to the nominal volume
flow rate in the pipe network.
Electrically, the monitors must be
connected to the terminals pro-
vided in the switch cabinet (see the
separate wiring diagram).
Minimum medium volume, sys-
tem
A minimum medium volume of
the system of 4.0 l/kW per output
stage must not be undershot. For
units with a heat pump function
(KWP), a minimum medium vol-
ume of 6.0 l/kW is required.
To guarantee more constant tem-
peratures in the medium circuit,
higher volumes may be required.
Pressure switch for medium circuit
(only for KWG...SP and KWP...SP)
A pressure switch in the medium
circuit monitors the current me-
dium pressure and switches off the
circulation pump and thus the unit
when the plant pressure is too low.
For the adjustment of the circula-
tion pump, we recommend that a
main line regulating valve be pro-
vided in the vicinity of the unit.
NOTE
Guarantee of the minimum volume flow rate through a three-way valve
Correct
installation
Incorrect
installation
Two-way
valve
Three-way
valve
External medium storage tank for
KWG (...P) and KWP (...P)
For the KWG, KWG...P, KWP, and
KWP...P units, additional medium
storage tanks are required.
If, for example, the required out-
put of the cold water consumers is
considerably lower than the gener-
ated cooling capacity of the chiller,
we recommend that the medium
contents be increased. The me-
dium pipes, for example, could be
oversized or an additional storage
tank could be used to increase the
compressor operating time.
If the minimum medium volume
of the system is not reached, a
storage tank must generally be
provided.
27
27


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for REMKO KWG750 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of REMKO KWG750 in the language / languages: English as an attachment in your email.

The manual is 7,1 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of REMKO KWG750

REMKO KWG750 User Manual - German - 60 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info