STA-RITE SR200NA Service Manual page 25

SECTION TWO – Heater Installation
Heater Water Connections
C. Wait 30 seconds; the POOL ON light will go off
and the SPA ON light will come on.
D. Press the appropriate temperature control to set
maximum spa temperature (set temperature to
104° F [40° C] or less).
E. Wait 30 seconds; the SPA ON light will go off and
the unit will shut down.
5. Reinstall and bolt up the jacket halves.
Figure 2-15: Maximum Temperature Set Point
T T T T h h h h e e e e h h h h e e e e a a a a t t t t e e e e r r r r r r r r e e e e q q q q u u u u i i i i r r r r e e e e s s s s a a a a d d d d e e e e q q q q u u u u a a a a t t t t e e e e w w w w a a a a t t t t e e e e r r r r f f f f l l l l o o o o w w w w a a a a n n n n d d d d p p p p r r r r e e e e s s s s s s s s u u u u r r r r e e e e
t t t t o o o o o o o o p p p p e e e e r r r r a a a a t t t t e e e e . . . .
There should be no shut-off valves or other flow restric-
tions in the outlet plumbing from the heater that could
prevent flow through the heater. Use a diverter valve to
switch flow between the pool and spa. Do not use any
type of valve that can shut off flow. Ashut-off valve
should only be placed in the heater outlet plumbing to
isolate the heater if it is below the level of the pool or
spa.
Acheck valve should be installed if there is a possibili-
ty of back-siphoning through the heater when the
pump is off.
P P P P r r r r e e e e s s s s s s s s u u u u r r r r e e e e R R R R e e e e l l l l i i i i e e e e f f f f V V V V a a a a l l l l v v v v e e e e
Heaters are not supplied with a pressure relief valve,
although Canadian code and some local U.S. codes may
require them. If required, install a 3/4"Pressure Relief
Valve complying with the ANSI/ASME Boiler and
Pressure Vessel Code. The relief pressure of the valve
MUST NOT EXCEED 50 PSI.
A3/4-inch NPT connection is provided in the manifold
for installation of a pressure relief valve. The relief
valve must be installed vertically, using a 3/4-inch
brass nipple and elbow. Do not place a valve between
the manifold and the relief valve.
To avoid water damage or scalding from operation of
the relief valve, install a drain pipe in the outlet of the
pressure relief valve that will direct water discharging
from the valve to a safe place for disposal. Do not
install any reducing couplings or valves in the drain
pipe. The drain pipe must be installed so as to allow
complete drainage from the valve and drain line. The
relief valve should be tested at least once a year by lift-
ing the valve lever.
Explosion hazard. Any heater installed
with restrictive devices in the piping system downstream
from the heater (including check valves, isolation valves,
flow nozzles, or therapeutic pool valving) must have a
relief valve installed as described on this page.
Relief Valve Installed
User
supplied
pipe
fittings
Figure 2-16: Relief Valve Installation
2-16
(See Figure 2-16)
Pipe relief valve discharge
to a drain or other safe
disposal site.
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