Chapter 2 BCU Mounting and Power Wiring
18 BMTW-SVN01F-EN
Verify Conformance to Clearance Specifications
Make sure that the selected location provides enough space to accommo-
date the BCU minimum clearances (see Figure 5 on page 18). The clear-
ances are for ventilation, electrical conduit access, and sufficient human
access for the installing contractor, operator, and service technician:
• The top clearance allows for ventilation and entry of conduit for the
120 Vac power supply, low-voltage communications links, and
input/output wiring.
• The bottom clearance allows for the alternate entry of conduit for low-
voltage communication links and input/output wiring. It also allows
for ease of access while making wiring connections. In addition, the
bottom clearance specifies the optimum mounting height for BCUs
with operator displays.
• The left clearance allows for the alternate entry of conduit for the
120 Vac power entry.
• The right clearance allows for entry of conduit for low-voltage commu-
nication links and input/output wiring.
• The front clearance allows for operation and service access.
Figure 5. Tracer Summit BCU Minimum Clearances
12 in.
(30 cm)
46 in.
(1.2 m)
12 in.
(30 cm)
12 in.
(30 cm)
36 in.
(91 cm)
Front view
Side view
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