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120V
or
240V
Contactor
Thermostat
Low
Liquid
Control
L1
L2
Term. Block
Junction Box
Factory
Field
120V
or
240V
Contactor
Thermostat
Low
Liquid
Control
L1
L2
Term. Block
Junction Box
L3
Factory
Field
WIRING DIAGRAM 3
WIRING DIAGRAM 4
120V
or
240V
Contactor
Thermostat
Low
Liquid
Control
L1
L2
Term. Block
Junction Box
Factory
Field
120V
or
240V
Contactor
Thermostat
Low
Liquid
Control
L1
L2
Term. Block
Junction Box
Factory
Field
WIRING DIAGRAM 2
WIRING DIAGRAM 1
120V 120V 240V 240V 480V 480V 480V 120V 120V 240V 240V 480V 480V 480V
Model 1ø 3øΔz 1ø 3øΔz 1ø 3øΔz 3øY Model 1ø 3øΔz 1ø 3øΔz 1ø 3øΔz 3øY
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
KTLC, KTLI and KTLS 210 — — 1 — 1 — — KTLO 310 — — 3 4 3 4 —
KTLC, KTLI and KTLS 212 — — 1 — 1 — — KTLC, KTLI and KTLS 312 — — 3 4 3 4 —
KTLC, KTLI, KTLO and KTLS 220 1 — 1 — 2 — — KTLC, KTLI and KTLS 315 — — 3 4 3 4 —
KTLO 230 1 — 1 — 1 — — KTLC, KTLI and KTLS 318 — 3 4 3 4 —
KTLC, KTLI, KTLO and KTLS 240 1 — 1 — 1 — — KTLC, KTLI, KTLO and KTLS 330 3 4 3 4 5 4 6
KTLO 250 1 — 1 — 1 — — KTLO 345 3 4 3 4 3 4 —
KTLC, KTLI, KTLO and KTLS 260 1 — 1 — 1 — — KTLC, KTLI, KTLO and KTLS 360 3 4 3 4 3 4 —
KTLO 270 — — 1 — 1 — — KTLO 375 3 4 3 4 3 4 —
KTLC, KTLI and KTLS 280 — — 1 — 1 — — KTLC, KTLI, KTLO and KTLS 390 3 4 3 4 3 4 —
Note: Use wire size and type specified by NEC.
480V heaters require 600V wire per NEC.
480V heaters require a contactor.
Contactor and wiring supplied by customer.
WIRING DIAGRAMS – KTLC, KTLO, KTLS, KTLI
120V 120V 240V 240V 480V 480V 480V 120V 120V 240V 240V 480V 480V 480V
Model 1ø 3øΔz 1ø 3øΔz 1ø 3øΔz 3øY Model 1ø 3øΔz 1ø 3øΔz 1ø 3øΔz 3øY
Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig. Fig.
BLCK — — 1 4 1 4 — BLCS — — 7 8 7 8 —
Note: Use wire size and type specified by NEC.
480V heaters require 600V wire per NEC.
480V heaters require a contactor.
Contactor and wiring supplied by customer.
WIRING DIAGRAMS – BLCK, BLCS