Grundfos VersaFlo UPS, Инструкция по установке и эксплуатации

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2.4 Pumped liquid requirements
CAUTION: The VersaFlo UPS pump is intended for
use with water only.
The pump can be used to circulate:
• Potable hot water
• Water for hydronic heating
• Cooling water
• In domestic hot-water systems it is advisable to
use bronze pumps (VersaFlo 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
VersaFlo 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.
The pump is lubricated and cooled by the liquid
being pumped. Therefore, the pumped liquid must
always be allowed to circulate through the pump.
Extended periods without circulation will cause pre-
mature wear to the bearings and excessive motor
heat. The pumped liquid must also meet the follow-
ing requirements:
Minimum pump inlet pressure (during operation)
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).
3. Installation procedures
3.1 Electrical preparation
Terminal box position
At the bottom of the stator, closest to the pump hous-
ing, there are eight drain holes to allow condensed
water to escape. The drain holes shall 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
Rotating the terminal box
To change the position of the terminal box, follow
these steps:
1. Remove the four allen-head screws holding the
pump head onto the pump housing.
2. Carefully lift the pump head and rotate it so the
terminal box is in the desired position.
DO NOT locate the terminal box beneath the
pump. Make sure the O-ring is properly seated in
the pump housing.
3. Replace the pump head onto the pump housing.
4. Tighten the allen-head screws evenly.
Torque to:
8 mm............15 ft lbs
10 mm..........25 ft lbs.
UPS
model
At these liquid temperatures
167°F/
75°C
194°F/
90°C
230°F/
110°C
[psi] hf [psi] hf [psi] hf
32-40/4 0.7 1.6 2.2 5.1 21.0 48.5
32-80/2 0.7 1.6 5.1 11.8 23.9 55.2
32-160/2 11.6 26.8 16.0 37.0 34.1 78.8
40-40/4 0.7 1.6 4.4 10.2 23.2 53.6
40-80/4 0.7 1.6 1.5 3.5 18.1 41.8
40-80/2 6.5 15.0 10.9 25.2 29.0 67.0
40-160/2 5.1 11.8 9.4 21.7 27.6 63.8
40-240/2 11.6 26.8 16.0 37.0 34.1 78.8
50-40/4 0.7 1.6 2.9 6.7 21.8 50.4
50-80/4 0.7 1.6 4.4 10.2 23.2 53.6
50-80/2 4.4 10.2 8.7 20.1 26.8 61.9
50-160/2 11.6 26.8 16.0 37.0 34.1 78.8
50-240/2 10.2 23.6 14.5 33.5 32.6 75.3
53-55/57 4.4 10.2 8.7 20.1 26.8 61.9
75-69 11.6 26.8 16 37 34.1 78.8
80-40/4 11.6 26.8 16.0 37.0 34.1 78.8
80-80/4 14.5 33.5 18.9 43.7 37.0 85.5
80-160/2 21.8 50.4 26.1 60.3 43.5 100.5
100-40/4 27.6 63.8 31.9 73.7 50.0 115.5
WARNING!
Never make any connections in the pump
terminal box unless the electrical supply
has been switched off.
TM0
3
729
6
4
7
0
6
WARNING!
If the pump is already installed in the sys-
tem, the system must be drained or the
isolation valves on both sides of the pump
must be closed before the allen-head
screws are removed as the pumped liquid
may be scalding hot and/or under pres-
sure.
Do not start the pump until the system has
been filled with liquid and vented.