4.0 INSTALLA TION
UL S2203
Cheetah Xi Install ation Manual
4-5
FM
P/N: 06-356
Rev 9, 10/2016
4.9
INSTALL AC POWER TRANSFORMER
The following general steps shall be used to install the AC power transformer into the back-box:
1. Locate the four threaded press studs provided in the enclosure back-box for mounting the transformer
(See Exhibit 4-3).
2. Position the transformer over the press studs making sure that the transformer’s H1 and H2 (AC
primary input) terminals are facing to the left side of the enclosure. Secure the transformer in place
with four 6-32 hex nuts and lock-washers provided with the enclosure.
4.10 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.
Caution
Ensure the power supplied is compatible with the transformer
assembly (120VAC or 240VAC) prior to applying power.
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 primary transformer, as shown in Exhibit 4-5.
2. Secure Hot and Neutral wires to terminals H1 and H2.
PRIMARY
XFMR
SECONDARY
XFMR
Exhibit 4-3: Transformer Mounting Location
Exhibit 4-4: Transformer Mounting