Installation Guide

Pomona, CA Clemmons, NC Nashville, TN
Tel: [phone] www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
39
Figure 28: Heat exchanger header components
Cartridge
Retaining Nut
Water Pressure
Switch
Thermistor
Pressure Relief
Valve Port
Drain Plug
Temperature
Limits
Bypass Service
Cartridge
Inlet/Outlet
Header
DRAINING THE HEAT EXCHANGER:
This procedure applies to installations where the heater is located higher than the pool water level. If it
is necessary to drain a pool heater located below the pool water level, you must either partially drain the
pool, or isolate the pool heater from the pool using valves.
1. Set the heater to STANDBY mode using the keypad.
2. Turn the electricity to the heater OFF at the circuit breaker panel.
3. Turn the heater gas valve OFF using the knob or switch on the valve (see Figure 26).
4. Turn the heater’s gas supply OFF at the main shut-off valve outside the heater cabinet.
5. Be sure the circulating pump is OFF.
6. On models with plastic headers, remove the plastic drain plug (see Figure 28). On models with
bronze headers (ASME models), open the brass drain valve located on the header (see Figure 21).
7. Allow all water to drain from the heater.
8. On models with plastic headers, re-install the plastic drain plug. On models with bronze headers
(ASME models), close the brass drain valve located on the header.
SPRING START-UP:
1. Inspect and clean the heater, being sure the heater is free of leaves and debris prior to startup.
2. Be sure inlet and outlet piping are properly attached to the heater and the drain valve is closed.
3. Turn the ltration system pump “ON” and allow the system to run long enough to purge all the air
from the lines.
4. Turn the gas supply to the heater “ON”.
5. Set the temperature control using the keypad to “POOL” or “SPA” and adjust the set point to the
desired temperature setting.
6. If operating difculties are encountered, contact a qualied service company for assistance.
ATTENTION: Heater installation, checkout, and start-up should now be completed. BE SURE to
leave the Owner’s Manual with the pool owner.