User manual

SEC-HD user manual Connecting equipment to your SEC-HD
17
To connect single-stage heating or cooling elements
Connect single-speed heating or cooling elements to your SEC-HD as shown in the following
diagrams.
Gas-fired furnace or brooder All other single-speed elements
Connecting an alarm system
You can connect an alarm system to your SEC-HD's alarm terminal. An alarm system can be a siren,
alarm panel, or auto-dialer. Read your system’s installation guide for installation instructions and
information about the type of system: normally open or normally closed . Below are the descriptions
for the alarm terminal.
 COM: common connection
 N/O: normally open; closes during alarm conditions
 N/C: normally closed; opens during alarm conditions
For the alarm system to sound (or dial out) during an alarm condition, you must enable the alarms.
For more information, read Programming alarm settings on page 35.
The ratings of the alarm system must not exceed the ratings of the relay.
Alarm relay ratings: 0.4 A at 125 VAC; 2 A at 30 VDC, resistive load
0.2 A at 125 VAC; 1 A at 30 VDC, inductive load