Innotech Maxim - Manual (Page 35)

Page 35
MAXIM Installation Instructions
© Mass Electronics Pty Ltd 2011 Chapter 3 – Electrical Installation
3-3.3.1 Power Input
The VAVMax and MicroMAX controllers are powered by a 24VAC power source. The operating voltage
must meet the requirements of Safety Extra Low Voltage (SELV) to EN60730. The transformer used
must be a Class 2 safety transformer in compliance with EN60742 and be designed for 100% duty. It
must also be sized and fused in compliance with local safety regulations. Power input specifications
for the VAVMax and MicroMAX controllers are detailed in Table 3-9 below.
A single transformer may be used to supply voltage to more than one controller, but you must ensure
that the planned load is well within the rating of the transformer. The transformer output terminal
designated as AC Neutral must be solidly earthed to the main earth link of the enclosure panel. The
dedicated power input terminals are Terminals 1 and 2 and are detailed in Table 3-10 below.
Table 3-9: VAVMax and MicroMAX Power Source Specifications
Power Source
24VAC ±10%, 50/60 Hz, Nominal Transformer rating with maximum TRIAC load: 35VA
24VAC ±10%, 50/60 Hz, Nominal Transformer rating with no TRIAC load: 10VA
Table 3-10: VAVMax and MicroMAX Power Terminals
Terminal AC Supply
1 24VAC
2 0VAC (Neutral)