Danfoss RT 5 Installationsanleitung

Installation guide
Pressure switch
Types RT 5, RT 110, RT 112, RT 116, RT 117, RT 121, RT 200
⇑
Code no.
017xxxx
Fig. 1
ENGLISH
Data
Pressure switch, types RT 5, RT 110, RT112,
RT 117, RT 121, RT 200, RT 116
Max. test pressure
RT 110, 112, 121: 8 bar
RT 5, 116, 200: 25 bar
RT 117: 47 bar
Fitting
Damp out strong pressure pulsations.
A damping coil, fig. 2 or fig. 3, will often be
sufficient.
Insert a water-filled tube loop as a
temperature lock (e.g. a 10 mm Cu tube) if
at high plant temperatures there is a risk
that the pressure connection of the control
will become heated to more than 100 °C.
Position the pressure control so that on
water plant it cannot be exposed to frost. It
can operate on an air cushion, for example.
Setting
The pressure controller is set by rotating
the knob (5), at the same time reading the
main scale (9). See fig. 1.
The differential is set by rotating the
differential adjusting nut (19) to the value
indicated by the use of the nomogram in
fig. 5. The maximum operating pressure is
© Danfoss A/S (AC-MCI / jmn), 2014-01
1 m Cu
/ - 20 UNF
7
16
Fig. 2 Code no. Fig. 3
060-333366
Fig. 5
thus the sum of the setting pressure and
the differential.
Example
It is desired to control the pressure in an
oilfired steam boiler by the use of an RT
116.
Maximum pressure 9 bar.
Minimum pressure 8.2 bar.
Differential 9 - 8.2 = 0.8 bar.
1. Connect the oil burner to terminals 1-2
of the pressure switch.
2. Set the pressure switch for 8.2 bar by
rotating the knob (5).
3. Set the differential adjusting nut (19) at
the figure 6 which is found by reading
the nomogram in fig. 5.
DANSK
Data
Pressostater type RT 5, RT 110, RT112,
RT 117, RT 121, RT 200, RT 116
Max. prøvetryk
RT 110, 112, 121:
RT 5, 116, 200:
RT 117:
Montering
Dæmp kraftige trykpulsationer. Ofte er
dæmpesløjfe fig.2 eller fig. 3 tilstrækkelig.
Indskyd en vandfyldt rørsløjfe som
IC.PI.P10.C4.82 / 520B5931
Code no.
060-007166
Fig. 4
temperaturspærre, fx af10 mm Cu-rør, hvis
der i anlæg med høje temperaturer er risiko
for at pressostatens tryktiIslutning kan
opvarmes til over 100 °C.
Anbring pressostaten, så den ved
vandanlæg ikke udsættes for frost (lad den
fx ar-bejde på en luftpude).
Indstilling
Pressostaten indstilles efter. den funktion
- slutte eller bryde - som skal ske ved
faldende tryk (områdeindstilling).
Selve indstillingen udføres med hånd-
knappen (5) under samtidig aflæsning af
hovedskalaen (9). Se figur 1.
Differensen indstilles med differensrullen
(19) efter nomogrammet i figur 5. Højeste
funktionstryk er således lig summen af
indstillingstryk og differens.
Eksempel
Trykket i en oliefyret dampkedel ønskes
re-guleret af en RT 116.
Max. tryk 9 bar.
Min. tryk 8,2 bar.
Differens 9 - 8,2 = 0,8 bar.
1. Tilslut oliebrænderen til pressostatens
8 bar
klemmer 1-2.
25 bar
2. Indstil pressostaten på8,2 bar med
47 bar
hånd-
knappen (5).
3. Indstil differensrullen (19) på tallet 6 som
fremkommer ved aflæsning af nomo-
grammet i figur 5.
1