Jandy HI-E2, Инструкция по установке и эксплуатации

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Jandy
®
Pro Series, Hi-E2
®
and Hi-E2R Gas-Fired Heater
|
Installation & Operation Manual
Figure 25. Temperature rise measurement at return
header.
inside the heater . Remove the brass plug on the top
surface of the header and install a Pete's Plug and pocket
thermometer. See Figure 25.
Proceed as follows:
1. If the piping system has a manual bypass valve,
close it.
2. Turn off the heater by moving the switch on the
temperature control panel to “Off”.
3. After three minutes, note and record the
thermometer reading. This is the pool
temperature.
4. Start the heater and let it operate for at least
five minutes. Note and record the thermometer
reading. The difference between this reading and
the first one is the temperature rise.
5. If the piping system has a manual bypass valve,
gradually adjust it until the temperature rise is in
the range required by Table 6.
6. Scribe a line on the bypass valve shaft and case
to mark the correct adjustment position. Wire the
handle to the pipe to prevent tampering.
Note that temperature rise is somewhat less when the
water is hot (spa application) and when heater is installed
at elevations significantly above sea level. For high
elevation installations, reduce the numbers in Table 6 by
3% per 1000 feet above sea level.
Table 6. Water Temperature Rise and Flow Rates
(measured at return header).
Model
Minimum
Temp Rise,
°F (C)
Maximum
Temp Rise,
°F (C)
Minimum
System
Flow
GPM
350 20 (11) 29 (16) 30
In a system without external bypass, it may be necessary
to make changes. If temperature rise is too low, a manual
bypass must be installed. If temperature rise is too high,
there is inadequate flow, possibly requiring a change to
the piping system or a larger pump. Before proceeding
with either remedy, verify proper heater operation. Low
gas input results in low temperature rise and vice-versa.
A problem with the heater internal bypass assembly also
affects measured temperature rise.
5. Slowly turn the pressure switch adjustment
sprocket counterclockwise one-quarter turn. The
heater should come back on.
6. Check the adjustment by turning the filter pump
OFF. The burners should shut off immediately.
If they do not, restart the filter pump and repeat
Steps 6 and 7. Check the adjustment again.
7. Return the pool temperature control to the desired
temperature.
It may be necessary to repeat these steps to get a proper
setting. The switch must be set so that the heater will not
fire unless the pump is running. If a proper setting cannot
be reached, contact the factory service department.
8. Reinstall the door.
2.12.6 Water Temperature Rise
The Hi-E
2
pool heater has an internal bypass device which
accommodates a wide range of water flow. Its purpose
is to ensure that flow through the heat exchanger is
adequate to provide high efficiency operation and prevent
overheating even though flow through the filter system
may vary.
Correct water flow should be confirmed upon start-up of
the heater and in most servicing situations. If flow is not
normal, corrections must be made to the pool system. If
the system has an external flow bypass (because of very
high filter system flow), it should be adjusted to provide
proper flow through the heater. Flow is evaluated by
determining the water temperature rise through the heat
exchanger.
Before checking temperature rise, be sure the pool filter
is clean. If necessary, clean the filter. Temperature rise
is measured at the return header, which is on the side
opposite to the inlet/outlet header. For access, remove the
side cover, which is held in place by wing nut fasteners