NTI Trinity Lx150 - Page 55

Lx Series Installation and Operation Instructions │Trinity Lx
55
Figure 12-1(a) Line Voltage Field Wiring (Lx150-400)
Table 12-1(a) Line Voltage Field Connections (Lx150-400)
Connection
Location
Description
L1
(120VAC)
1
Location for connecting line voltage of the power supply. Note; most installation codes
require the installation of a service switch to break line voltage to the boiler.
PUMP A
2
120VAC output to the DHW circulator; powered during a demand for DHW.
PUMP B
3
120VAC output to the Boiler circulator; powered during all demands; DHW, local Central
Heat (CH1) and Lead-Lag Central Heat [CH2 (LL)]. This output is not used for all
plumbing configurations, see Section 10.0.
PUMP C
4
120VAC output to the Central Heating circulator; powered during a demand for local
Central Heat (CH1) or Lead-Lag Central Heat [CH2 (LL)].
L2
(Neutral)
5
Location for connecting neutral of the power supply and all circulators.
6
Ground
7
Location for connecting earth ground and for grounding all of the circulators.
8
No Conn.
9
This terminal is used only for factory wiring, do not add or remove wires from this
location.
LINE
NEUTRAL
GND
PUMP A
PUMP B
PUMP C
SERVICE SWITCH
(field supplied)
Green
Green
Green
Black
White
White
Black
White
Black
120VAC SUPPLY