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19. Once the pre-purge period ends, the igniter will
begin to spark just prior to the gas valve opening.
The gas valve will open for a 4 second trial for igni-
tion. If flame is proven, the heater will operate to
meet heat demand. If flame is not proven, the
heater will enter a post-purge period and then retry
the ignition cycle or lockout, depending on the
heater configuration.
20. Once gas is flowing, the manometer reading will
drop to -0.40" +/- .1" WC. See the instructions on
page 40 for adjusting the valve manifold pressure
if the reading is not within tolerance.
21. Visually check through the sight glass that the
heater is on and heating. A yellowish glow coming
from the refractory indicates that the heater is run-
ning. The flame should be a blueish color.
22. Remove the manometer and replace with bleedle
plug.
23. Reinstall front door panel and knurled screw hold-
ing the door in place.
24. Feel the inlet and outlet pipes. Outlet pipe should
be only slightly warmer than the inlet. It should not
be hot.
SECTION 2 - CAUTION
Elevated water temperature can be hazardous. The
U.S. Consumer Product Safety Commission has these
guidelines:
1. Spa water temperatures should never exceed
104°F (40°C). A temperature of 100°F (38°C) is
considered safe for a healthy adult. Special caution
is suggested for young children.
2. Drinking of alcoholic beverages before or during
spa or hot tub use can cause drowsiness which
could lead to unconsciousness and subsequently
result in drowning.
3. Pregnant Women Beware! Soaking in water over
102°F (39°C) can cause fetal damage during the
first three months of pregnancy resulting in the birth
of a brain-damaged or deformed child. Pregnant
women should stick to the 100°F (38°C) maximum
rule.
4. Before entering the spa or hot tub, users should
check the water temperature with an accurate ther-
mometer; spa or hot tub thermostats may err in reg-
ulating water temperatures by as much as 4°F
(2.2°C).
5. Persons with a medical history of heart disease, cir-
culatory problems, diabetes, or blood pressure
problems should obtain a physician's advice before
using pools or hot tubs.
6. Persons taking medications which induce drowsi-
ness, such as tranquilizers, antihistamines, or anti-
coagulants, should not use spas or hot tubs.
SECTION 3 - MAINTENANCE AND
CARE PROCEDURES
WARNING: Check the heater for possible rodent
nests after long periods of non-use.
To be followed one month after start-up and then semi-
annually.
1. Inspect and operate all controls, gas valve and
pressure relief valve.
2. On indoor heaters, clean room intake openings to
ensure adequate flow of combustion and ventila-
tion air.
CAUTION: Combustion air must not be contaminat-
ed by corrosive chemical fumes which can damage
the heater and void the warranty.
3. Keep area around heater clear and free from com-
bustible materials, gasoline and other flammable
and corrosive vapors and liquids.
IF HEATER WILL NOT FIRE:
If you have no electrical power, it may be that your
"circuit breaker" has tripped. Try re-setting it.
If you have electrical power but the heater will not fire
check the following or see Troubleshooting section:
1. The time clock must be in the "ON" position.
2. Your pump strainer basket may be full.
remove debris.
3. Your filter may be dirty. If so, backwash or clean
filter. (To tell if your filter is dirty, look to see if the
filter pressure will be higher than usual).
4. The pump may have lost its prime and be running
dry. Check the pressure on the filter. If there is no
pressure; then you are not moving water (or your
gauge is broken). Try to get the pump to run at its
normal flow rate.
6
If so
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