Specifications
Installation and Operation Manual
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Legacy™ Model LRZM Pool/Spa Heater
Inspections performed at least once a year by
a qualied technician are required to maintain your
heater's safe and efcient operation. The following
basic safety checks must be performed.
1. Inspect the venting system for blockage, leakage,
and corrosion.
2. Inspect burners and verify that they are clean.
Clean with a wire brush if necessary to remove
debris.
3. Check for spider webs and other debris in the
pilot and main burner orices - especially at
spring start-up.
4. Check for loose or broken wires and terminal
connections.
5. Make sure that the pressure switch operates
properly by shutting the lter pump off and on
a few times. The burner should go off immedi-
ately after the pump stops. An ignition sequence
should start shortly after the pump is turned back
on.
6. Make a visual check of the main burner and pilot
ame patterns. The ame can be seen in a mirror
arrangement held beneath the burners. The ame
should be:
a. Blue in color.
b. 25 mm to 102 mm above burner surface (see
Figure 23).
7. Inspect the gas and electronic controls, including
the following:
a. High temperature limit switch
b. Water pressure switch
c. Automatic gas valve
d. Roll-out switch (fusible link)
e. Temperature control
F. Vent temperature limit
8. Perform a temperature rise test in accordance
with Section 11.6.
9. If the heater is equipped with a pressure relief
valve, check for corrosion in and around the
valve. With the lter pump on, lift the release
lever on the top of the valve to make sure that
water runs freely through it. If corrosion is found,
replace the pressure relief valve. When replacing
the valve, be sure that the pump is off. Install the
valve so that the discharge is directed away from
any area that may be damaged by water.
10. Inspect the external surfaces of the heat exchang-
er tubes for black carbon soot buildup by placing
a mirror between and under the burners when the
heater is ring. Remove any soot that has collect-
ed on the tubes, and correct the cause.
After installation and rst start-up, check the
heat exchanger for black carbon soot buildup
after the following periods of operation: 24
hours, 7 days, 30 days, 90 days, and once
every 6 months thereafter.
11. Conduct a normal operating cycle and observe
that the sequence proceeds as intended.
For your safety, when starting the heater, keep your
head and face away from the burner area opening
to prevent any risk of personal injury.
Keep this manual in a safe place for future
reference by you and your professional
technician when inspecting and servicing the
heater.
Pilot, Thermopile and Thermocouple Position
Thermocouple Thermopile