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WIRING INSTRUCTIONS
Wire the CAS unit in accordance with the National Electric Code and applicable local codes. UNIT
MUST BE GROUNDED. Check the ground circuit to make certain that the unit has been properly
grounded. The wiring should be protected by an over-current circuit device rated at 15 amperes.
CAUTION must be taken to ensure that the wiring does not come in contact with any heat source. All
line voltage and control circuits between the CAS unit and the appliance MUST be wired in
accordance with the National Electrical Code for Class I wiring or equivalent.
Remove the wiring access cover to access the wiring terminals. Use the enclosed conduit
connector(s) to route the appropriate wires through the CAS housing. The incoming ground wire must
be attached to the green colored ground screw near the wire terminals. The following sections
describe the most common applications. The references to various series of control kits implies that
any kit in that series may be used. If further information or additional wiring diagrams are needed,
please consult Field Controls' technical support.
I
W
C
NTERNAL
IRING
ONNECTIONS FOR THE
Refer to Figure 4 for the internal wiring of the CAS-4mV unit.
Wire Key
M
M
OTOR
ANUFACTURER
McLean Engineering
All Others
E
W
C
XTERNAL
IRING
ONNECTIONS
Refer to Figures 5-12 for appropriate wiring method.
CAS U
NIT
W
C
IRE
OLOR
W1
W2
W3
Black
Blue
Brown
Brown
Black
Blue
Figure 5 – Chimney Vent Single 750mV Gas Appliance
Page 6
Figure 4
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