REMKO EWS 200 E, Руководство по сборке и эксплуатации

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Media conveyed by the pumps
Grundfos pump
The pump is suitable for conveying the following
media:
n Clean, thin, non-aggressive and non- explosive
media without any solid or long-fibred compo-
nents
n Cooling liquids that are free of mineral oil
n Soft water
The kinematic viscosity of water is ϑ = 1 mm2/s (1
cSt) at 20 °C. If the pump is used to convey liquids
that have a different viscosity, the conveying
capacity of the pump is reduced.
Example:
A water-glycol mixture with a 50 % glycol ratio has
a viscosity of approx. 10 mm2/s (10 cSt) at 20 °C.
This reduces the conveying capacity by approx.
15 %. Additives that could impair the functionality
of the pump must not be added to the water. The
viscosity of the conveyed medium must be taken
into consideration when designing the pump.
Wilo pump
The pump can be used to convey water- glycol
mixtures with a glycol ratio of up to 50 %. Example
of a water-glycol mixture:
Maximum permissible viscosity: 10 to 50 cSt. This
corresponds to a water-ethylene glycol mixture
with a glycol ratio of approx. 50 % at -10 °C. The
pump is controlled by a performance-limiting func-
tion that protects against overloading.
The conveyance of glycol mixtures has an impact
on the MAX characteristic curve because the con-
veying performance is reduced in line with the
glycol content and the temperature of the media.
Temperatures above the nominal temperature
specified for the medium in question should be
avoided so that the effect of the glycol is not dimin-
ished.
As a general rule, operating times should be kept
to a minimum if media temperatures are high. It is
essential that the plant be cleaned and rinsed
before adding the glycol mixture.
To prevent corrosion or precipitates, the glycol mix-
ture must be checked regularly and replaced if
necessary. If the glycol mixture needs to be
thinned out, follow the instructions of the glycol
manufacturer.
7 Installation
General notes
NOTICE!
The EWS 200E storage tank may only be oper-
ated with the following REMKO heat pumps:
– WKF 70, WKF 120, WKF 180
– HTS 80, HTS 90, HTS 110,
– HTS 130, HTS 200
NOTICE!
Preparation of the hot water must be in compli-
ance with the applicable standards.
n Do not continually top up the water level in the
storage tank. This will prevent corrosion
damage to the storage tank.
n If corrosive water is a problem, please note
that special models of the storage tanks can be
tested. (Address all queries to your contractual
partner).
n In hard water areas, connect a standard desca-
ling device upstream.
n Drinking water quality is required to operate the
drinking water storage tank.
Units with electrically-operated flange heating
cartridges
If such units are equipped with a safety tempera-
ture limiter which stops heating the storage tank at
a temperature of max. 85 °C. The choice of con-
nection components (connecting pipes, circulation,
safety valve combination, etc.) must be such that,
in the event of a malfunction of the temperature
control, the connection components will withstand
temperatures of 85 °C, avoiding possible damage.
Domestic hot water-side connection (pressure-
tight)
Hot water heaters are pressure-tight storage tanks
with which pressure-tight connections can be
established. If the line pressure is higher than the
permissible operating pressure, a pressure
reducing valve provided by the customer must be
installed in the cold water supply. Only pressure-
tight fittings may be used.
The component-tested safety equipment must be
installed in the cold water line (see the following
diagram).
REMKO storage tank systems
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