Pumped Liquid Requirements; Installation Procedures; Electrical Preparation - Grundfos UP 200 Serie Instrucciones De Instalacion Y Operacion

3.5 Pumped liquid requirements

The UP Series 200 pump is intended
Caution
for use with water only.
The pump can be used to circulate the following
liquids:
• potable hot water
• water for hydronic heating
• water/glycol mixtures up to 50/50
• cooling water.
In domestic hot-water systems it is advisable to
use bronze pumps (UP Series 200 or UPS
model) only for water with a degree of hardness
lower than 14 grains per gallon of hardness. For
water with a higher degree of hardness, a direct-
coupled TP pump is recommended. If the pump
is installed in a heating system, the water should
meet the requirements of accepted standards on
water quality in heating systems.
In water/glycol mixtures, in order to prevent the
glycol from degrading, temperatures above
those for which the liquid is rated should be
avoided and time spent at high temperatures
minimized.
It is also important that the system is cleaned
and flushed prior to the installation of the glycol
mixture.
In order to avoid problems with corrosion or
precipitation, the glycol liquids should be
checked and maintained regularly. If further
dilution of the supplied glycol is required, follow
the requirements of the supplier of the glycol.
Glycol with the trade name
Caution
®
DEXCOOL can damage the pump.
®
DEXCOOL is a registered trademark of
General Motors Corporation, used under license
by Texaco Lubricants NA.
The pump is lubricated and cooled by the
pumped liquid. Therefore, the pumped liquid
must always be allowed to circulate through the
pump. Extended periods without circulation will
cause premature wear to the bearings and
excessive motor heat. The pumped liquid must
also meet the following requirements:
6
Minimum inlet pressure (during operation)
At these liquid temperatures
UP
model 167 °F/
75 °C
[psi] hf [psi]
UP
0.7 1.6 4.8
43-70
UP
3.6 8.3 8.2
43-110
UP
2.9 6.7 7.5
53-45
UP
1.1 2.5 5.8
53-46
Liquid temperature range
Continuously:
14 °F (-10 °C) up to 230 °F (110 °C).
Intermittent:
< 284 °F (140 °C) for short periods of time.
Domestic hot water:
< 140 °F (60 °C).

4. Installation procedures

WARNING
Never make any connections in the
pump terminal box unless the power
supply has been switched off.

4.1 Electrical preparation

Terminal box position
At the bottom of the stator, closest to the pump
housing, there are eight drain holes to allow
condensed water to escape. The drain holes
must not be blocked. The drain holes must point
downwards. The terminal box must therefore
point upwards in one of the positions shown in
fig. 1. The following terminal box positions apply
whether the piping is mounted vertically or
horizontally.
Fig. 1 Possible terminal box positions
194 °F/ 230 °F/
90 °C 110 °C
hf [psi] hf
11.0 15.4 35.6
18.9 18.9 43.7
17.3 18.1 41.6
13.3 16.4 37.7