7
TYPICAL NXM2G INSTALLATION PROCEDURES
When installing the NXM2G, the following procedures must be followed:
•
Remove the bottom wiring cover. Select the required conduit size and connections
for the field wiring to the boiler controls and temperature sensors.
•
Use suitable screwed fasteners such as self tapping screws. Only use the holes provided
in the wiring compartment for mounting the NXM2G.
•
For top mounting, use only mounting screws and brackets provided.
•
Use conduits to run wires to connect the boiler thermostat/s or boiler control panel to the
NXM2G.
•
Conduits must be used to run the flow and return sensor wires to the NXM2G.
•
Use colored multi-core cable to make the various connections between the boiler
and the NXM2G.
•
Remove the plug connectors from the wiring compartment. As in
Figure 1
. using the
cable anchor provided, use cable ties to secure cables in the wiring compartment.
•
Connect mains L, N and E (Ground) to the connector and plug into the NXM2G as in
Figure 1
.
The L, N and E (Ground) must be on the same electrical phase as the boiler/burner’s
electrical supply.
WARNING:
Do not use the internal PCB area to secure the NXM2G – doing so will
warranty
void the
TIP:
Before installing the temperature sensors inside the conduits, mark
either or both the flow or return sensor(s) with colored tape at both ends
of the cable(s). This helps to ensure correct orientation when inserting
the plugs into the NXM2G connectors. i.e. the supply (flow) sensor plugs
into the supply (flow) connector on the NXM2G and the return sensor
into the return connector on the NXM2G.
plugs
