Wilo Wilo-Stratos -Z, Инструкция по установке и эксплуатации

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ENGLISH
45
Control systems
∆ p-c
,
∆ p-v
and
∆ p-T
:
Operating point
on max.
characteristic Draw a line from the operating point to the left. Read
set value Hs and set the pump in accordance with this
value. Settings are to be made
by Customer Services
via the LON bus or
with the IR monitor ta-
king into account the
unit
conditions.
Setting range H
min
, H
max
see 1.2.1 type code T
min
: 20 ...90°C
T
max
: 40 ... 110°C
∆
T
max
-T
min
≥
10°C
Increase:
∆
Hs/
∆
T
≤
1 m/10°C
H
min
, H
max
Operating point in
control range Draw a line from the ope-
rating point to the left.
Read set value Hs and set
the pump in accordance
with this value. Continue the standard line
until it meets the max. cha-
racteristics line, then conti-
nue horizontally to the left,
read set value Hs and set
the pump in accordance
with this value.
∆ p-c (Fig. 9) ∆ p-v (Fig. 8) ∆ p-T (Fig. 10)
6.3 Selecting the control system
Heating-/ventilation- and air conditio-
ning systems with a resistor in the trans-
fer part (heating ra thermostatic
valve)
≤ 50% of the total resistance
Circulation systems for drinking water
with a resistor in the generator circuit
≥
50% of the resistance in the ascanding
pipe
Unit type System conditions
Recommended
control system
1. Two-pipe systems with thermostatic/zone valves
and low consumer authority
x
H
N
> 4m
x
Very long distribution lines
x
Heavily choked branch shut-off valves
x
Branch differential pressure regulator
x
High pressure losses in those system parts
through which the total volume flows
(boilers/refrigerating machines, poss. heat ex-
changers, distribution line up to 1st junction)
2. Primary circuits with high pressure losses
3. Circulation systems for drinking water with ther-
mostatic controlled branch shut-off valves
∆ p-v