4.0 INSTALLATION
4-6
Cheetah Xi 50 Installation Manual
UL S2203
Rev 6, 09/2015
P/N: 06-369
FM
4.9.2
CONNECT AC POWER TO THE TRANSFORMER
System AC line power (120 VAC or 240 VAC, 50/60 Hz) must originate from a dedicated circuit at the main
building power distribution center. The circuit breaker shall be equipped with a lockout mechanism and be
clearly labeled as a "
Fire Alarm
" circuit. Route the power to the system through the dedicated grounded
metallic conduit.
I
Caution
Ensure the power supplied is compatible with the transformer
assembly (120VAC or 240VAC) prior to applying power.
I
Caution
Verify that AC power circuit has been turned off before connecting
power wiring to the transformer.
The following general steps shall be used to connect AC power to the transformer:
1. Route the AC hot and neutral wires to the transformer (See Exhibit 4-5).
2. Secure Hot and Neutral wires to terminals H1 and H2.
I
Caution
Never swap transformer Primary (H1 and H2) and Secondary (X1
and X2) by connecting AC feed to secondary terminals. Doing so
will cause the transformer to step-up the power resulting in certain
damage to the controller.
3. Install the AC ground wire (G) under the transformer onto the mounting stud identified with the
grounding sticker. This connection provides lightning and transient protection for the panel and must
make a good mechanical connection to the enclosure.
4. Tighten the hex nuts to secure the transformer and ground wire in place.
5. Align and lower the plastic terminal cover onto the transformer and snap in place.
6. DO NOT ENERGIZE THE AC POWER SOURCE AT THIS TIME!
Exhibit 4-5: Power Transformer Wiring
Summary of Contents for 10-071
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