Service manual

12
FCX INSTALLATION AND SERVICE MANUAL
INSTALLATION
6.1 - CIRCULATING PUMP CHARACTERISTICS
Fig. 39
7 - ELECTRICAL CONNECTIONS
WARNING - ELECTRICAL SHOCK HAZARD!
DISCONNECT THE POWER SUPPLY
BEFORE ATTEMPTING ELECTRICAL
INSTALLATION OF THE UNIT.
Electrical power and control connections are made to pigtail
leads that exit through holes in the right rear of the unit (facing
the front of the unit).
The power connections must be made in a Listed junction
Total Head in Feet
Capacity in U.S. GPM
HP range 1/25, 1/12, 1/6
Fluid temp 230°F Maximum
50°F Minimum
Flow Range 10-46 GPM
box that is not provided with the unit. All wiring should
conform to the National Electrical Code and any applicable
local codes and standards. To minimize the likelihood of a
heating system shutdown caused by an unrelated electrical
circuit fault, the unit and any related electrical components
should be connected to a separate branch circuit specifically
dedicated for that purpose.
The control circuit connections can be in-air splices made to
pigtail leads provided. Control circuit connections are NEC
Class 2, intended for connection to a typical room thermostat.
Fig. 40
LEGEND
L: Phase
N: Neutral
M/A: On/Off switch
E/H: Summer/Winter switch
TSE: Overheat safety cutout aquestat
TRC: Adjustable thermostat
TSF: Flue gas safety cutout thermostat
V1: On light
V2: Burner safety shutdown light
C: Burner connector
F: Fuse (6,3 A)
R: Relay
T: Main transformer 120/24 volts
CC: Circulating pump
Notes:
A. Electric power leads factory provided at
right rear of unit. Permanently field splice
120-1-60 field provided power circuit leads
in NEC junction box.
B. Control circuit leads factory provided at
right rear of the unit are 24 volt, NEC class
2 for connection to a room thermostat.
C. Do not use the internal transformer to
power any external system components
such as a zone valve.