10
8 9
7
0
2 3
1
5 6
4
Ensure that the unit is grounded properly. The unit contains a
number of static sensitive components that can be damaged by
static discharge.
To AVOID damaging gas, power or other underground utility
lines, contact underground utility locating companies BEFORE
digging.
NOTES:
• Use a minimum of 12 gauge wire in most cases. The type and
length of the earth ground rods vary by region. Contact the
building inspector’s office in the municipality where you plan to
install the unit for correct grounding materials and installation
procedures.
• Do not ground the unit to a pedestal post (gooseneck) if one is
used.
EARTH GROUND ROD
Other Ground Sources within
12' of the unit
Green Ground Wire
Earth Ground
Rod
Ground to
Metallic Cold
Water Pipe
Ground to
Existing
Electrical
System
12 AWG Minimum
Electrical
Panel
12' Maximum
POWER
1
2
The TAC 1
MUST be
grounded.
ff
OOf
f
M a in
R o o m
E u g
R
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O p e r
R
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E u g . D e p t .
M a n u . 1 R m
M a in D
e p t .
M a n .
u 2 R m
Air (1)
Conditioner
)
2
(
r
i
A
r
e
n
o
i
t
i
d
n
o
C
Conference
Room 1
Conference
Rm 2, 3
Refer.
Bus 1, 2, 3
Conference
Room 2
o
C
p
m .
Ser
e
v 2
o
C
p
m .
Serv
e 1
12 Vac
Power (included)
Dedicated Outlet
Dedicated 10 Amp Minimum Circuit Breaker
TAC 1
NOTE:
Chamberlain is not responsible for conflicts between the information listed in the above table and the requirements of local building
codes. The information is for suggested use only. Check local building codes before installation.
POWER WIRING
The 110 Vac outlet must be dedicated to the unit only. This outlet
should be wired back to its own 10 Amp minimum circuit
breaker. This will prevent two problems:
• Other equipment cannot introduce spikes, noise, surges, or
dips into the power circuit.
• The system’s operation will not be affected if any other
equipment develops a short circuit across the power line.
Connect the transformer into a 110 Vac outlet after all
connections have been made, any other type of outlet will cause
damage to the system.
POWER WIRE TABLE
DISTANCE
AC POWER WIRE SIZE
Under 30 feet
18 AWG
30 - 75 feet
18 AWG
75 - 150 feet
18 AWG
150 - 250 feet
16 AWG
250 - 500 feet
12 AWG
INSTALLATION
>> EARTH GROUND ROD AND POWER WIRING
1. Install the earth ground rod within 12 feet of the unit.
2. Attach a 12 AWG wire to the unit ground wire with a wing nut.
