Lochinvar F0600187510 - Manual (Page 44)

Commercial Pool Heaters
OPERATION Continued
OPERATION AND DIAGNOSTIC
INDICATORS
The control panel has up to six indicating and diagnostic lights to
show all major steps of operation and control sensed malfunctions.
There are display indicators on the Operating Temperature Control
that give status information as well.
Figure 49 – Exterior Control Panel with Operation/Diagnostic
Lights and LCD Display
Code
Sequence
Condition Lights
Prepurge Operation of combustion air fans before
ignition.
Trial for Ignition Hot surface igniter 1 preparing to light
burners.
Heating Burners operating.
Service (if equipped) Service Indicator when option
purchased.
Alarm Indicates flame failure on either ignition
module and will indicate additional
alarms if the alarm of any failure option
is purchased.
TABLE-O
Status LED Diagnostic Codes
The display indicators on the Operating Temperature Control point
to text on the overlay (Figure 46). They indicate the following:
Speed - This indicates that the speed setting is being displayed. The
speed setting controls the responsiveness of the 3-way valve.
Open, Close - These indicators appear when the Operating
Temperature Control adjusts the position of the 3-way valve.
Active - This indicator appears when the pool heater supplies heat
to the pool.
Water Chemistry
Factors which affect pool water and, more importantly, the
efficiency of your new pool heater are:
1. Proper Filtration
2. Proper Circulation
3. Disinfection and Oxidation
4. pH Control and Total Alkalinity
5. Algae Control
6. Water Balance
The water chemistry of your pool changes daily due to natural
evaporation of the water and the addition of chemicals. Chemicals
are used to sanitize and control algae growth in the pool. Their
addition must be carefully monitored. The accumulation of
minerals or scale in the pool heater due to a chemical imbalance
will cause a non-warrantable failure of the heat exchanger and its
components. pH is an important factor in maintaining proper
balance in your pool water. pH is the measurement of the acidity
or alkalinity of water. The following chart shows the recommended
pH range and what can happen when the pH increases or decreases
from the ideal of 7.2 to 7.8.
Figure 50 – pH Scale
If the pH becomes too high, it lowers the ability of chlorine to
destroy bacteria and algae, water can become cloudy, filter elements
may become blocked, and scale formation will occur in the pool
and heat exchanger. If the pH becomes too low the water becomes
acidic. You can have eye burn and skin irritation, etching of the
plaster, corrosion of metal fixtures and the resulting stains on the
plaster, degradation of sand and gravel filters and corrosion of the
copper tubes in the heat exchanger.
Damage to the pool heater, including the pumped bypass, due to
improper chemical water balance is non-warrantable. Proper
chemical water balance, as indicated by use of the calcium
saturation and Ryznar indexes, is required to maintain warranty
status of the pool heater and its components. These indexes are
designed to help prevent scaling and corrosive damage to the pool
and all associated equipment. We recommend the use of a
commercial or professional grade test kit to maintain chemical
water balance. See your local pool professional for assistance.
44