Burner Inspection And Cleaning; Burner Assembly Removal; Burner Assembly Installation - Hayward H150 Installation, Operation And Service Manual

SECTION 6. QUALIFIED TECHNICIAN - MAINTENANCE/SERVICING

Burner inspection and cleaning:

With the heater on, remove the front door and make a visual
inspection of the pilot and main burners. A mirror, placed on the
heater bottom below the burners, may be necessary to view the
main burner flames. The main burner flames should be about
8-10 inches in height and should not "lift" off the ports of the
burners. See Figure 45. The flames should have well-defined
mantles with the bottom 2-3 inches blue changing over to yellow
upwards. A totally yellow or "lazy" flame may be an indication of
a fuel-rich mixture due to restricted air openings, including spider
nests in the burners and/or orifices.
Figure 45: Main Burner Flame Characteristics
3/8"
-1/2"
Figure 46: Pilot Flame Characteristics
All burners should be brushed with a wire brush and be free
of lint, dust and spider webs before each season of use. Burners
with damaged ports must be replaced. See Figure 46 for pilot
flame characteristics (millivolt heater only).
1. Shut off water, gas and electricity to the pool heater.
2. Turn gas valve knob to "OFF" and set system switch to "OFF".
3. Remove wires and gas line from the heater gas valve.
Remove the electrode/sensor wire (electronic ignition only)
from the ignition module.
4. Remove the three bolts securing the burner mounting bracket
to the intermediate panel.
5. Lift burner assembly up and out of the three retaining hooks
on the intermediate panel and pull assembly out of heater.
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Burner assembly installation:

1. Guide burner assembly through intermediate panel. Lift up,
and place burner mounting bracket on the three retaining
hooks on the intermediate panel.
2. Secure the burner mounting bracket to the intermediate panel
with three bolts.
3. Reconnect wires to the gas valve and ignition module (elec-
tronic ignition only) according to the wiring diagram.
4. Reconnect gas line to gas valve. Turn on gas and check for
gas leaks. Use a soapy water solution. Bubbles forming indi-
cate a leak. Never use an open flame (match, lighter, torch,
etc.) as a leak could cause explosion or injury.
5. To start heater, follow the lighting instructions on the label
inside the cabinet.
Gas valve replacement:
8"-10"
!
HEIGHT
WARNING: Do not attempt to repair gas valve. If found to be
defective replace entire valve. Attempts to repair it will void
the warranty.
1. Follow "Burner Assembly Removal" procedure.
2. Disconnect wires to gas valve including pilot generator wires
(millivolt only).
3. Disconnect pilot tubing from gas valve (millivolt only).
4. Unscrew gas valve from manifold pipe.
5. Replace gas valve. Only use liquid pipe dope on the male
threads of the manifold. Do not place pipe dope on the first
two threads of the pipe.
6. Reconnect wires to gas valve, including pilot generator wires
and pilot tubing (millivolt only).
7. Follow "Burner Assembly Installation Procedure".
Pilot assembly removal:
(Millivolt Heater Only)
1. Disconnect pilot generator wires and pilot tubing from gas
heater gas valve.
2. Disconnect electrode ignitor wire from Clicklite™.
3. Remove screw securing pilot bracket to burner mounting
bracket. Lower pilot bracket to clear locating stud and remove
assembly from heater.
4. To service or replace pilot, remove two screws securing pilot
to pilot bracket and disconnect pilot tubing from pilot.
!
CAUTION: Never enlarge the opening in the pilot orifice.
5. Reverse the above procedures for installation. Be sure there
are no gas leaks at pilot tubing connections.
(see Figure 47)
(see Figure 47)
(see Figure 48)