20
1. Apply mains voltage. Check that all functions of the respective switchpoints work correctly.
LEDs
1
,
2
,
3
,
4
are provided for visual check of switchpoints.
Fig. 7
To check the correct functioning of the LEDs
1
,
2
,
3
,
4
remove the housing cover
G
.
See section
“Electrical Connection”
.
Commissioning Procedure
Danger
1. Check whether the system has been wired according to the wiring diagram.
Fig. 12
2. Check whether the mains supply is in accordance with the wiring of the equipment.
The terminal strip of the NRGS 11-1, NRGS 16-1, NRGS 16 -1S is live during operation.
This presents the danger of electric shock!
Cut off power supply before mounting or removing the housing cover!
Checking electrical connection
Applying mains voltage
1. Check whether the designated switchpoints (i. e. switching functions) have been correctly allocated
to the individual electrode tips. See table
“Functions”
page 13.
Checking assignation of switching functions
Operation
For operation in (pressurized) hot-water or steam boilers to TRD 401, TRD 602, TRD 604, EN 12952,
EN 12953 or according to national directives or regulations of the classification society.
NRGS 111, NRGS 161, NRGS 111S
Note
To analyse and eliminate malfunctions refer to section “Fault finding list for trouble-
shooting” on page 21.