Installation Guide

SECTION III. INSTALLER CHECK-OUT AND START-UP:
GENERAL:
Some of the following procedures will require the heater to be operating. Full lighting and shutdown instruc-
tions are included on the lighting and operating label afxed to the inside of the front access panel. The heater
automatically lights in response to a call for heat, and automatically shuts down when that call for heat is satised.
Water must be owing through the heater during operation. Check that the pump is operating and the
system is lled with water and purged of all air prior to starting the heater.
Figure 25: Location of components
Figure 31: Location of Components
(H150FD and H200FD models)
(H250FD, H300FD, H350FD, and H400FD models)
Transformer
Ignition Control
Board
Air Box
Blower
Vacuum
Switch
Gas Valve
Gas Manifold
Flame Sensor
Blower
Keypad
Fuse Board
Ignition Control
Board
Transformer
Gas Manifold
Air Box
Ignitor
Access Panel
Cover
Sight Glass
Flame Sensor
Blower
Keypad
Fuse Board
Gas Valve
Blower
Vacuum
Switch
Sight Glass
Ignitor
Access Panel
Figure 31: Location of Components
(H150FD and H200FD models)
(H250FD, H300FD, H350FD, and H400FD models)
Transformer
Ignition Control
Board
Air Box
Blower
Vacuum
Switch
Gas Valve
Gas Manifold
Flame Sensor
Blower
Keypad
Fuse Board
Ignition Control
Board
Transformer
Gas Manifold
Air Box
Ignitor
Access Panel
Cover
Sight Glass
Flame Sensor
Blower
Keypad
Fuse Board
Gas Valve
Blower
Vacuum
Switch
Sight Glass
Ignitor
Access Panel
(H500FD Units)
Keypad
Ignition Control
Board
Fuse Board
Blower
Sight Glass
Flame Sensor
Ignitor
Access Panel
Gas Manifold
Air Box
Gas Valve
Blower
Vacuum
Switch
Transformer
Pomona, CA Clemmons, NC Nashville, TN
Tel: [phone] www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
31