IM-P402-93 AB Issue 7
10
1
2
3
8
9
7
+
*
Termination
box
Screen
Brown
Red
Orange
Black
Flying leads supplied
with PA20
(approximate 12")
*
See PA20 Installation and Maintenance Instructions
for sensitivity selection. See CAUTION, Section 6.3.
LC2610
controller
6.2
Wiring diagram UL version
PA20 preamplifier and LP20 capacitance probe
(see PA20 and LP20 Installation and Maintenance Instructions)
Relay rating table:
Version
Relay load type
Rating
Standard
Resistive at 250 Vac
3 A
Inductive at 250 Vac
1 A
Lamp or resistive at 240 Vac
3 A
Tungsten fialment at 240 Vac
1 A
UL listed
AC motor at 240 Vac
¼ HP (2.9 A)
AC motor at 120 Vac
1
/
10
HP (3 A)
Pilot duty (control circuits/coils)
C300 (2.5 A)
Cabling should be installed in accordance with BS 6739 - Instrumentation in process control
systems: Installation design and practice or local equivalent.
For the US and Canadian markets the controller must be wired in accordance with the National
and Local Electrical code (NEC) or Canadian Electrical Code (CEC).
Note:
Screened high temperature, 3 core, 1 mm² (18 - 16 AWG) copper cable is required for the
probe wiring. The maximum permitted length is 100 metres (328 ft). Use cable with a
suitable temperature rating for the installation. Pirelli FP200 or Delta Crompton Firetuf OHLS
are suitable cables for the standard version. Use NEC Class 1 wiring for the UL version.
Connect the screens as shown in the wiring diagrams.
*
Do not connect terminals 1, 3, 5 or 7 to earth or ground except via the probe body.
Ensure resistance from probe body to pipework / boiler shell is less than 1
W
.
Fig. 8
Archive