Swimming Pool Heater User Manual

VACUUM
RELIEF
VALVES
TEE
ELBOW
END
CAP
ELBOWS
RETURN FROM
HIGHEST POINT
TEE
END
CAPS
INLET
(from pool)
OUTLET
(to pool)
9
Figure 11
DIVIDED
SYSTEM
ASSEMBLY
ON ROOF
Special System Layouts
Use a divided system when installing more than the rec-
ommended maximum number of collectors per row,
when avoiding roof obstructions, or where limited space
dictates. This provides uniform distribution of water
through all the collectors. If water distribution through the
collectors is non-uniform, the heating capacity of the sys-
tem will be reduced.
WHEN INSTALLING A DIVIDED SYSTEM, THE OUT-
LET HEADERS FROM EACH OF THE LOWER (OR
CLOSEST) ROWS OF COLLECTORS MUST BE CON-
NECTED TO THE HIGHEST (OR FURTHEST) POINT IN
THE SYSTEM. Refer to Figure 11.
A divided system requires an Add-A-Row Kit (Part
#12043-1/-2) for each row of collectors.
A more complex divided system is shown in Figure 12.
This also illustrates the application of the Row Spacer Kit
to clear a roof obstruction.
Booster Pump System
In some cases, the pool filter pump may not be able to cir-
culate water at a high enough flow rate to allow for proper
collector operation. If so, it may be necessary to replace
the filter pump with a larger one or add a booster pump. If
the pump size is increased, it may also be necessary to
upgrade the filter with one with greater flow ratings.
Supplemental Gas, Oil-Fired,
or Electric Heaters
It is desirable to pipe the stand-by heater in a bypass
loop. Refer to Figure 10. Fuel-fired heaters often create
a large pressure drop. By placing a heater in a by-pass
loop, pump size, and electrical energy requirements may
be reduced.
SYSTEM START-UP AND TEST
System Start-up and Checkout for
Automatic Systems
To check out the system for proper operation turn on the
filter system. Set the temperature control to its highest
level. Switch the control to the “flow through collector”
mode. The “flow through collector” light should come on.
The 3 way valve will then be sending water thru the col-
lectors, and air will be purged out of the collectors into the
pool return line for several minutes, and should then clear.
The collectors should feel uniformly cool to the touch.
Switch the control to the “bypass collector” mode. The cor-
responding light will go on and the 3 way valve will be
sending water directly back to the pool, bypassing the
solar collectors. After about 5-10 minutes, feel the solar
collectors again. They should have begun to warm up.
Now switch back to the automatic mode. If the sun is still
shining on the solar collectors, the “flow thru collector” light
should go on again. Adjust the temperature control lower.
When you reach the actual temperature of the pool
water, the light will turn off. The flow bypass collector
light will go on again. Move the temperature control to
maximum and leave there. The “flow through collector”
light will go back on. For more detailed information on the
system startup, trouble shooting and valve/control instal-
lation, follow the manufacturers’ instructions included
with the automatic control system.