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1. Periodically check the venting system on outdoor
heaters. The heater’s venting areas must never be
obstructed in any way and minimum clearances
must be observed to prevent restriction of combus-
tion and ventilation air. Remember shrubs grow and
in time may obstruct a heater’s venting areas.
2. Check the venting of indoor heaters for looseness
and possible leaks. Keep all openings for com-
bustion and ventilation air clear and unobstructed.
3. Keep the entire pool heater area clean and free
of all debris, combustible materials, gasoline and
other flammable vapors and liquids. Remove any
leaves or paper from around the heater.
4. Do not store chlorine, other pool chemicals, or
other corrosives in the vicinity of the heater.
5.
If heater is operating on Propane gas, Propane
tank must not fall below 30% full or damage to
the heater may occur. Hayward
will not be
responsible for heaters that soot up due to
improper gas level in tank resulting in inadequate
gas volume.
6. If another appliance is added to the gas line at a
later date, consult local gas company to be sure
the gas line will have the capacity to supply
both units at full capacity at the same time.
7. Do not use the heater if any part has been under
water. Contact a qualified service technician to
inspect the entire heater and replace any part of
the control system or gas valve that was under
water. If heater has been totally submerged in
water, replace the entire heater.
8. An inspection program is a good preventative
maintenance measure. Keep this manual in a
safe place for future reference and also for a
service technician when inspecting or servicing
heater. Additional inspection procedures to be
performed by a qualified service technician are
covered in Section VI of this manual.
Winterization:
I
n moderate climate, the heater can continue to
o
perate during short-term cold spells. Do not use the
heater to maintain the water temperature just above
freezing or for freeze protection. Care must be taken
to avoid freeze-up in the heater. When it is used dur-
ing freezing weather, the pump must run continuous-
ly. The heater is not warranted against freeze-ups.
In regions where freezing temperatures are encoun-
tered, all water
must be drained from the heater when
out of service, to prevent damage to the heater and
piping. Draining heat exchanger is recommended as
part of the season’s shut-down procedures.
A HEATER DAMAGED BY FREEZING IS NOT COV-
ERED UNDER THE MANUFACTURER’S WARRANTY.
Removing Drain Plug:
(See figure 44)
(Above Pool Installations Only)
1. Set the temperature control to “STANDBY”. Turn
electricity off.
2. Turn heater gas valve to “OFF” position.
3. Turn gas supply outside of heater off.
4. Be sure circulating pump is off.
5. Remove drain plug from front header and allow
all water to drain from heater.
6. Reinstall drain plug.
Spring start-up:
1. Inspect and clean heater, being sure heater is
free of leaves and debris prior to start-up.
2. Be sure inlet and outlet piping are properly
attached to the unit and drain valve is closed.
3. Turn filtration system pump on and allow system
to run long enough to purge all air from the lines.
4. Turn gas supply outside of heater on.
5. Set the temperature control to “Pool” or “SPA mode
and adjust set point to desired temperature setting.
6.
If operating difficulties are encountered, contact a
qualified service company for assistance.
27
The igniter is turned off when flame is sensed or
after 4 seconds.
5. If flame is sensed for more than 60 seconds the
control switches the blower to high speed.
6. The blower prover switch, the temperature limit
switches, the vent pressure switch, the water
pressure switch, the water temperature sensors,
and the flame sensor are constantly monitored
during a call for heat to assure the heater is
operating properly.
7. When the thermostat is satisfied and the call for
heat ends the control immediately de-energizes
the gas valve. Flame is extinguished.
8. The control operates the blower during a
30-second post-purge period.
FAILURE TO LIGHT: RETRY
If the first ignition attempt fails during a normal heat-
ing cycle the control will make two (2) additional
ignition attempts:
1. The control de-energizes the gas valve after the
4-second ignition trial ends.
2. The control operates the blower during a
30-second post-purge period.
3. The control monitors for open contacts at the
blower prover switch.
4. The control performs a gas valve relay check.
5. A normal ignition sequence resumes with Item #2
in “Heating Mode” (above). If the third ignition trial
fails the control enters a safety lockout (or “hard”
lockout) after the post-purge period of the third
failed trial.
6. The error code “IF” is displayed and the
“SERVICE” indicator is illuminated.
a. The control automatically resets and clears the
“IF” error code without any user intervention after
60 minutes. If there is a call for heat after reset
the control will make three (3) trials for ignition. If
ignition is not established the control will again
enter safety lockout for 60 minutes. This cycle will
continue until ignition is established or the call for
heat is removed.
b. The user can reset the control and clear the
“IF” error code by pressing the “MODE” button to
move through “ST
ANDBY” and return to the
previous mode (“SPA” or “POOL”).
LOSS OF FLAME: RECYCLE
If flame is established and then lost the control will make
ten (10) attempts at ignition. If flame is lost within ten
(10) seconds of ignition the control will respond within 2
seconds. If flame is lost more than ten (10) seconds
after ignition the control will respond within 0.8 seconds.
1. The control de-energizes the gas valve and the blower.
2. The control monitors for open contacts at the
blower prover switch.
3. The control performs a gas valve relay check.
4. A normal ignition sequence resumes with Item #2
in “Heating Mode” (above).
5. If the tenth ignition trial fails the control enters a
safety lockout (or “hard” lockout) after the post-
purge period of the tenth failed trial.
6. The error code “IF” is displayed and the
“SERVICE” indicator is illuminated.
a. The control automatically resets after 60 minutes.
If there is a call for heat after reset the control will
make three (3) trials for ignition. If ignition is not
established the control will again enter safety lock
out for 60 minutes. If flame is established but is lost
the control will make ten (10) attempts at ignition.
This cycle will continue until ignition is established
or the call for heat is removed.
b. The user can reset the control and clear the
“IF” error code by pressing the “MODE” button to
move through “ST
ANDBY” and return to the
previous mode (“SPA” or “POOL”).
ADAPTIVE LEARNING ROUTINE
The control uses an adaptive learning routine that opti-
mizes ignition performance and igniter life by regulating
the igniter temperature. Excessive temperature at the
igniter can cause it to fail prematurely. The control meas-
ures supply voltage to determine an initial igniter temper-
ature. After each successful ignition the control reduces
igniter temperature slightly until a failed ignition occurs.
Once this occurs, the control increases igniter tempera-
ture and then maintains this temperature for a series of
ignitions. This learning routine is repeated periodically.
The control continuously monitors supply voltage and
compensates for any changes to igniter temperature.
KEYPAD INPUTS
The control accepts user inputs via the keypad on the
front panel.
1. When changing the mode from “STANDBY” to
either “SPA” or “POOL” there may be up to a 10-
second delay for the blower fan to begin running.
The control performs an internal self-test and
then verifies that the blower prover switch
contacts are open before energizing the blower.
2. It is normal for the heater to display a 1- to
2-second delay in responding to any keypad input.
3. It is normal for the heater to display up to a 5-
second delay when the keypad is used to reset
the control to clear an error code.
4. The control will accept a mode change during
lockout after 5 seconds.
The control will continue
to display the error code and remain in lockout
until it is reset. At reset the control will go to the
last saved mode.
Periodic inspection:
The H-Series is designed and built for long perform-
ance life when installed and operated according to the
manufacturer’s directions. Regular inspection by quali-
fied service personnel is recommended to keep the
heater working properly. The following inspection
points are suggested to help maximize heater life.
26
DRAIN PLUG
Drain Valve Location
Figure 44