Installation Guide

DIAGRAMS
32 • Electric Tankless Water Heater
TH-2
TH-1
Moisture
Sense
Level
Detect
Power
Supply
2 Chamber, 2 Element, 240/208 VAC
Used ONLY with the following two-chamber models:
TH-IN
Relay 2
Relay 3
Relay 1
Relay 4
Display
Ground
RED
BLK
GRN
Element 1 Element 2 Element 2 Element 1
L2
L1
BLK BLK
BLK
BLK
RED
RED
RED RED
RED BLK
BLK
BLK
RED
RED
BLK RED
BLK
RED
RED
RED
BLK
BLK
BLK
RED
USE COPPER CONDUCTORS ONLY WHEN
CONNECTING TO ELECTRICAL SERVICE.
L2
L1
BLK
RED
BLKBLK
CIRCUIT
BREAKER
A
CIRCUIT
BREAKER
B
• 14 kW at 208V
• 16 kW
• 18 kW
NOTICE: This wiring diagram applies to the following two-chamber models only: 16 kW, 18 kW, and
14 kW/208 V. If you have a two-chamber model that is rated other than 16 kW, 18 kW, or
14 kW/208V, refer to page 31. Failure to observe this no ce can result in equipment
malfunc on.