Jandy DP3000, Инструкция по установке и эксплуатации

Страница: 15 / 32

Model DP Oil-Fired Heater Page 13
Figure 12. Water Connections.
5.6 Pressure Relief Valve
A pressure relief valve (PRV) is recommended
in all installations, and is mandatory in any installation
in which the water flow can be shut off between the
heater outlet and the pool/spa.
A pressure relief valve is not furnished with the
heater. Check local building and plumbing codes to
determine if a pressure relief valve is required. An
appropriately rated relief valve is required for
protection of the filter system if there is a shut-off
valve installed between the heater and the pool .
The working pressure of the XL-3 heater is 75
psig. However, the pressure rating of the valve should
be at or below the lowest working pressure of any
component in the system. The threads on the PRV
mount must be 3/4" NPT or a 3/4" NPT adapter may
be used as long as the inside diameter of the adapter is
not less than the inside diameter of the PRV mount.
Any pressure relief valve installed must comply with
provisions of the standard described in ANSI Z21.22
for the United States or CAN1-4.6 in Canada. If a
pressure relief valve is not required, leave the standard
3/4" brass plug in place.
To install a pressure relief valve, do the following:
1. Remove the 3/4 inch plug from the side of the
inlet/outlet header (see Fig. 13).
2. Mount the PRV directly to the inlet/outlet header
by threading it into the hole.
3. Route the discharge piping so that steam from
the pipe does not endanger anyone near the
heater. Refer to your local installation codes for
more detailed information. The working pressure
of the XL-3 heater is 75 psig.
5.7 Auxiliary Components, Chlorinators,
Ozone Generators, and Sanitizing
Chemicals
The XL-3 heater is manufactured with materials
that are not compatible with high concentrations of
ozone, chlorine, bromine, or other sanitizing chemicals.
Heater damage caused by excessive chemicals or
improper ozonization is not covered by the Jandy
warranty. Be sure to adhere to the following:
•
When ozone is injected upstream of the heater,
install an offgas mixing chamber, or an ozone
bypass system between the heater and the ozone
injector to prevent ozone and air from entering
the heater.
• When chemical feeders are used, plumb the
feeder downstream of the heater and at a lower
position than the heater outlet. Install an in-line
check valve between the heater and the feeder
to prevent chemicals from siphoning into the
heater after the pump shuts off. A minimum of
18" is required between the heater and the check
valve.
• Wire the electric chlorinator so it cannot operate
unless the filter pump is running. If the
chlorinator has an independent clock control,
synchronize the filter pump and chlorinator
clocks, so the chlorinator only operates during the
filter cycle.
• Never deposit chemicals directly in the pool
skimmer.
Figure 13. Pressure Relief Valve.