OM-TDB
Photo #1
Pull lead from 208V tab and insert on 240V tab.
c. For conversion from 480V, 3-phase to
460V, 3-phase:
i. Verify that the branch circuit wiring is
adequate for any increase
amperage requirements (see table
on page 8).
ii. Complete “conversion label”
(supplied in bag and adhere it to the
control box near the UL dataplate).
5. Bring incoming electrical service through
the conduit fitting (for 240V 1-phase, a
new one inch conduit fitting is required) at
the rear of the support housing, making a
watertight connection with the incoming
lines. A BX style connection is not
recommended.
DANGER
ELECTRICALLY GROUND THE UNIT AT
THE TERMINAL PROVIDED. FAILURE TO
GROUND UNIT COULD RESULT IN
ELECTROCUTION AND DEATH.
6. Confirm that the jacket water level is at or
just above mid point of sight glass (new
models). If the level is low, follow the
instructions under “Jacket Filling and
Water Treatment” in the “Maintenance”
section of the manual.
7. Ensure that the open end of the elbow on
the outlet of the pressure relief valve is
directed downward.
TDB / TDBC SUPPLY WIRE REQUIREMENTS
THWN (75°) / THHN (90°) COPPER ONLY
TDB-20, TDBC-20 TDB-40, TDBC-40
VOLTAGE AMPS
SUPPLY
WIRE
VOLTAGE AMPS
SUPPLY
WIRE
208V 1 PH
3 PH
31
18
8
12
208V 1 PH
3 PH
52
30
6
8
240V 1 PH
3 PH
35
20
8
12
240V 1 PH
3 PH
60
35
4
8
460V 3 PH 7.3 14 460V 3 PH 14 12
480V 1 PH
3 PH
14
8
14
14
480V 1 PH
3 PH
25
15
10
12
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