9
NXM2G COMMISSIONING AND FUNCTIONAL TESTS
Before commissioning the NXM2G check the following:
1.
The NXM2G has been correctly positioned and is securely mounted to the mounting surface
2.
The connectors in the NXM2G have been correctly wired to boiler/burner.
3.
The electrical supply voltage and phase are powering the NXM2G correctly.
Commissioning the NXM2G on the boiler can now begin by following the steps below:
1.
Power up the boiler and burner.
2.
Observe LED status. (
Refer to Figure 6 on following page
)
3.
Note:
during “power up” all LEDs will be illuminated for a short time.
4.
Confirm operation for
Thermostat on
and
Boiler firing
LEDs and check for “
Boiler firing
mode
”. This will allow the burner/boiler to start without interruption (i.e. not in save mode) when
the NXM2G is powered for the first time. (see
Figure 6
).
5.
Operate the boiler thermostat (boiler firing) to stop the boiler/burner firing. Then reset the ther-
mostat to “call for heat” and check that the NXM2G initiates the “save mode” with the Thermo-
stat On LED flashing.
6.
Operate boiler thermostat (
stage 2 firing
) if applicable and check second stage “first firing” mode
(see
Figure 6
)
7.
Operate boiler thermostat (
stage 2 firing
) to reduce boiler firing to 1st
boiler firing
. Then reset
the thermostat to “call for heat” and check that the NXM2G initiates the “save mode”
Stage 2 fir-
ing
LED now flashing.
8.
Isolate the boiler/burner and repeat the above procedures.
9.
In the event that the NXM2G does not operate as in
Figure 6
, isolate boiler/burner and check all
wiring connections, and repeat steps 1 to 7.
