Electrical Connections - Hayward H250FDN Service & Installation Manual



ELECTRICAL CONNECTIONS:

The heater is equipped with a hot surface ignition control system that automatically lights the burners. An
external power supply is required to power the control system.
The heater is shipped from the factory wired for use with 240VAC, 60 Hz field power supply. To convert
the heater to 120VAC, 60 Hz operation remove the 240VAC voltage selector jumper from the ignition control
board and replace it with the 120VAC jumper. These jumpers are tie-wrapped together and are
lower left-hand corner of the ignition control board. See Figure 26.
All wiring connections to the heater must be made in accordance with the latest edition of the National
Electrical Code ANSI/NFPA 70, unless local code requirements specify otherwise. In Canada, follow CSA
C22.1 Canadian Electrical Code, Part 1.
The heater must be electrically grounded and bonded in accordance with local codes or, in the absence of
local codes, with National Electrical Code, ANSI/NFPA 70.
The heater may be installed with the electrical service and remote control entering the heater cabinet on
either the left or right sides of the heater.
The heater is equipped with () openings for electrical entry. Any unused openings must be plugged
(these are supplied).
Field wiring connections are to be made to the ignition control board, located behind the control panel
cover (see Figure 27). Connect the field supply wires to the terminal block on the left side of the ignition con-
trol board. Connect the ground wire to the lug to the left of the board. Tighten the terminal screws to 8 in-lbs.
Figure 26: Ignition control board and fuse board
Ignition
Remote connection
terminal block
Bring field wiring into
the control box here
Field wiring
connection
Field wiring
ground
board
Field wiring panel
Voltage selector jumper
(240VAC or 120VAC)
Figure 27: Location of field wiring terminal,
ground lug, and remote control connections
Bring field
wiring into
control box here
Make field wiring
connections here
(Control box cover not shown)
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400
Make remote
connection to
terminal block
here
Field wiring
ground lug is
here
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located at the