Siemens LMV5 Series Technical Instructions page 121

LMV Series
c. When actuator is installed and coupled, ensure that all mounting hardware is tightened
adequately, and some method of thread locking is employed on the mounting hardware
(except for the coupling hardware).
d. Ensure environmental conditions (temperature, vibration, moisture, etc.) are not
exceeded.
3. Ensure that all wiring is per the applicable wiring diagram and also meets applicable local and
national codes. Particular attention should be paid to the following:
e. If a step‐down control transformer is the source of 120 VAC power for the LMV5, the
ground and neutral should be bonded (connected) on the transformer.
f. Voltage supply to a 120 VAC LMV5 must be between 102 and 132 VAC, 47‐63 Hz.
Waveform must be a full sine wave.
g. The small transformer(s) used for the LMV5 (AGG5.210, typically blue or black) must be
wired and grounded. See Section 2 (Wiring) for more details. Pay attention to pins 3 and
4 on terminal SEK2 and proper grounding. If more than two SQM48 and one SQM45
actuators are modulated at the same time, a second transformer (AGG5.210) will be
required.
h. CANbus wire (AGG5.643) must be used to wire between actuators. Plain, shielded cable
is not adequate and is not permitted.
i. Ensure that the last device and only the last device on the CANbus has the termination
jumper in the "Bus Termination" position. See Section 2 (Wiring) for more details. The
AZL has built‐in termination.
4. Fuel (gas) supply must be adequate to support high fire operation and fuel (gas) train must be
sized correctly.
j. Fuel (gas) pressure before the firing rate control valve must be correct, stable and
repeatable at all firing rates and must not vary when other fuel (gas) burning appliances
(other boilers in the building) are being operated.
k. The fuel (gas) pressure regulator on the burner being commissioned should not be fully
open at high fire and should not be bouncing off the seat at low fire. Fuel regulator
must be sized properly, and have adequate turndown capability.
5. A temporary stack gas analyzer that has been calibrated and at a minimum reads O
(ppm) must be used for setting combustion.
6. Knowledge of what fuel flow represents high fire of the burner / boiler combination and also the
turndown of the burner / boiler combination. This can typically be found on the burner / boiler
nameplate.
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