Instruction manual
B. Startup Procedure:
1. Make sure that the pump is on and that there is at
least 20 GPM (1.26 L/sec) flow through the pool
heater. The heating elements will fail if allowed to
operate dry.
2. Check temperature control setting, also, examine
wiring for loose connections, etc.
3. Set temperature control to the desired
temperature. Note: for each degree the
temperature control setting is increased, power
usage may increase up to 10%.
4. Turn on power at main disconnect switch.
5. Turn on pilot switch on pool heater.
When closing down the pool for any length of time,
shut off the power at the main disconnect switch and
drain the water from the system. Water must not be
allowed to freeze in the heater, as this will cause
severe damage.
4.0 MAINTENANCE
Element Inspection and Replacement:
1. Turn off power at main disconnect switch and turn
off water at water supply line.
2. Drain pool heater.
3. Remove left end service access panel.
4. Disconnect element leads.
5. Remove the four (4) element flange retaining nuts
and extract element.
6. Installation is the reverse of steps 1 through 5.
(Reinstall element with new gasket)
Semi-Annual Cleaning:
Accumulated sludge in the tank is the greatest cause of
element failure. Twice yearly (before summer start-up
and before winter), the pool heater should be drained
and cleaned to remove any scale or sludge. More
frequent cleaning may be required if pool water contains
sediment or any amount of foreign matter.
1. Turn off system at main disconnect switch.
2. Open drain valve.
3. Permit water to run until it is clear.
4. Close valve and restart normally.
If high temperature causes manual reset high limit
switch to shut off the heater, disconnect power at
disconnect switch and determine the cause before
resetting.
** NOTICE **
NO PRESSURE RELIEF
VALVE IS SHIPPED WITH
THIS HEATER AND NONE
IS REQUIRED PER UL
STD 1261. DO NOT
INSTALL SHUT OFF
VALVE BETWEEN THE
HEATER AND POOL OR
SPA. A CHECK VALVE IS
ACCEPTABLE AND IN
ACCORDANCE TO UL STD
1261 REVISED JULY 1983.
COATES POOL
HEATER
FILTER
POOL
or
SPA
CHECK
VALVE
DRAIN
VALVE
BALL OR GATE
VALVE
PUMP
BALL OR GATE
VALVE
CAUTION
DO NOT INSTALL ANY SHUT-OFF VALVE
ON DISCHARGE SIDE OF HEATER. A
SWING CHECK VALVE IS PERMITTED.
Exception: If a 30 psi (2.1 Kg/cm
2
)
pressure relief valve is installed
between the heater and valve, the
valve may be of the shut-off (ball or
gate) type.
Proper water balance is important to extending the life of your Coates
Heater. While pH control is critical, the control of alkalinity and calcium
hardness will protect against scaling and also help to prevent corrosion.
ACID
ALKALINE
HEATER
CAN BE
DAMAGED
CORROSIVE
WATER
IDEAL
RANGE
ALKALINE
WATER
0 1 2 3 4 5 6 7 7.2-7.8 8 9 10 11 12 13 14
HEATER
CAN BE
DAMAGED
The correct level of sanitizer, pH, total alkalinity and calcium hardness will very, depending
on the type of pool (plaster, fiberglass or vinyl) and the chemical content of the fill water.
Water that is out of balance can damage your pool heater and void the warranty. This
heater is not for use in salt water pools.
PROTECTING YOUR COATES HEATER
WITH PROPER WATER CHEMISTRY
4