LAARS Pennant PNCP - Install and Operating Manual - Manual (Page 19)

Pennant Pool Heater Page 19
The service light will turn out, and the heater will
resume normal operation. Please note that if the heater
is equipped with a low water cut off there will be a
brief delay while the LWCO completes a self-check.
6.6 Spring and Fall Operation
Stand-by Service
Turn the thermostat down to approximately 70°F
(21°C). This will prevent the pool and surrounding
ground from becoming chilled and permit the pool to
be raised to swimming temperature in a shorter length
of time. Do Not Operate below 60°F (16°C).
6.7 Winter Operation
Complete Shutdown
1. See Section 6.4
2. If the heater is not protected from freezing
temperatures, it should be completely drained
before the first frost. Drain the heater by
removing the plug at the end of the inlet/outlet
header casting. Also, remove the small plug at
the bottom of the pump housing. Do not replace
either plug until the time that refilling is desired.
The heater must be level for complete draining.
When compressed air is used to blow out lines,
it is still necessary to follow these directions.
Because of the potential for electrical power
failure or pump failure, freeze protection should
never be accomplished by operating the pool
heater and the filter pump. Either of those failures
will potentially allow a freeze up and cause
damage to the heater and the attached system.
3. Improper use of the heater: The Laars PNCP
pool heater is not designed for continuous use as
a “anti-freezing” device for pools. Operating the
heater at low water temperatures will damage the
heat exchanger.
6.8 To Restart the Pennant
If drained, follow Section 6.2 in this manual for
proper filling and purging.
1. Switch off the main electrical disconnect switch.
2. Close all manual gas valves.
3. WAIT FIVE (5) MINUTES.
4. Set the pool aquastat to its lowest setting.
5. Open all manual gas valves.
6. Reset all safety switches.
7. Set the temperature controller to the desired
temperature setting and switch on electrical
power.
8. Burner will go through a prepurge period and
ignitor warm-up period, followed by ignition.
6.9 Therapeutic Pools (Spas)
Therapeutic pools or “spa” pools are usually
piped and controlled so that very warm or hot water,
often with air injection, is forced at high velocity
into a confined area of a swimming pool or into a
small separate pool. For the purposes of this manual,
any application in which the water temperature is
maintained above 85°F (30°C) is considered a spa.
SPECIAL SET-UP AND OPERATING
PROCEDURES APPLY TO SPAS.
1. Models PNCP1000 and larger should not be used
for spas due to their higher temperature rises.
2. To ensure that the spa inlet does not exceed 104°F
(40°C), the spa filter pump must circulate water
at the minimum flow rates shown in Table 9.
NOTE: Maximum Spa Temperature Is Assumed To Be
100°F (38°C).
3. Spas are excellent for relaxation, body-
conditioning and for arthritic and rheumatic
problems, but can be hazardous.
WARNING
The U. S. Consumer Product Safety Commission
has warned that elevated temperatures in spas and
hot tubs can be hazardous. Follow these “Safety
Rules for Hot Tubs:”
• Spa or hot tub 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.
• Drinking of alcoholic beverages before or during
hot tub use can cause drowsiness, which could
lead to unconsciousness and subsequently lead
to drowning.
• Pregnant women beware! Soaking in water
above 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.
• Before entering the spa or hot tub, users should
check the water temperature with an accurate
thermometer; spa or hot tub thermostats may
err in regulating water temperatures by as much
as 4°F (2°C).
• Persons with a medical history of heart disease,
circulatory problems, diabetes or blood pressure
problems should obtain their physician’s advice
before using spas or hot tubs.
• Persons taking medications which
induce drowsiness, such as tranquilizers,
antihistamines or anticoagulants, should not
use spas or hot tubs.