Jandy LJ, Инструкция по установке и эксплуатации

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Model LJ Pool and Spa Heater Page 39
MAIN GAS ASSEMBLY
1 Burner Tray Assy, NAT 125-400 R0383601-05
1 Burner Tray Assy, LPG 125-400 R0383701-05
2 Burner Tray, Shelf Only 125-400 R0317001-05
3 Gas Valve, NAT All R0317100
3 Gas Valve, LPG All R0319600
4 Gas Orifice, NAT 0 - 3,000 ft alt. (EA.) (Note 1) All L0032200
4 Gas Orifice, LPG 0 - 5,000 ft alt. (EA.) (Note 2) All L0032900
5 Anti-Rotation Bracket All 10835900
6 Burner, Main All L0052300
7 Burner Manifold 125 L0052200
7 Burner Manifold 175 L0006300
7 Burner Manifold 250 L0006400
7 Burner Manifold 325 L0006500
7 Burner Manifold 400 L0006600
Key Model Order
No Description No Part No.
should read 20-28 volts. If there is no voltage, there
may be a bad connection on the power distribution
board and the board may need to be replaced.
Listen closely to the gas valve when it is first
energized (24V first appears at test point 9 during the
trial for ignition). There should an audible "click" when
the valve opens.
If there is voltage at test point 9, but the gas
valve does not open, replace the valve.
WARNING
The igniter and some terminals of the power
distribution board utilize 115V or 230V power
and require appropriate servicing precautions.
Note that wires and terminals of these
components may be “hot” even when the
component is not operating.
10.4.3.8. Igniter/Ignition Control
With the igniter leads connected to the terminals
on the power distribution board there will be voltage of
98-126 VAC between test point 10 and test point 11 if
the heater is connected to a 115V supply. When the
supply is 230V, a regular voltmeter will read only 49-
64 VAC because of the way that voltage is reduced
by the power distribution board. However, a true
reading can be obtained by using an RMS voltmeter if
one is available. When using an RMS voltmeter, a
reading of 98-126VAC is expected. This voltage will
be applied only when there is an attempt to ignite the
burner or when the ignition control’s flame sensing
system has determined that it is OK to allow burner
operation. Even if voltage has been confirmed at the
end of the safety circuit, the “trial for ignition” se-
quence is imposed by the ignition control. This se-
quence consists of a 15 second period of pre-purge, a
10 second period for heat-up of the igniter and a 12
second trial for ignition. During this last 22 seconds
there is voltage between test point 11 and test point
12. If satisfactory ignition is not achieved, the igniter is
turned off and the system waits for a 45 second post-
purge period. The system may go through this cycle as
many as three times, but thereafter it is “locked out”
by the ignition control. Additional attempts will be
made only if the call for heat is interrupted by turning
off electrical power or setting the LJ controller to
“Off” and then back to "Pool" or "Spa".
To trouble shoot the ignition control, connect the
voltmeter leads at test points 10 and 11, and set the LJ
controller to call for heat. Observe that the normal
ignition sequence takes place. After the 15 second
prepurge, note the voltage between test points 10 and
11. Then look for the glow of the igniter by placing a
mirror on the bottom of the burner tray. If voltage
doesn’t appear between points 10 and 11 during the
trial for ignition, replace the power distribution board.
If the correct voltage is detected between points
10 and 11 during the trial for ignition but the igniter
does not glow, check the connections to the igniter.
Disconnect the igniter wires from the in-line fuse
harnesses and the fuse harnesses from the power
distribution board. Using an ohmmeter, check each
fuse and harness for continuity. If the ohmmeter reads
an open circuit, the fuse has failed. The fuses are in
place to protect the power distribution board in the
event of an igniter short circuit. If either of the fuses
has failed, replace the igniter before replacing the
fuse.
If the fuses are intact, check the igniter with the
ohmmeter. Place one lead of the meter on each wire
of the igniter. The resistance should read between 25
and 300 Ohms, depending on the temperature of the
igniter. If the meter reads outside of this range or
shows an open or short circuit, replace the igniter.
SECTION 11.
Replacement Parts
11.1 Ordering Information
To order or purchase parts for the Lite2 model
LJ pool/spa heater, contact your nearest Jandy dealer
or distributor. See the Jandy web site at
www.jandy.com for the nearest service center. If they
cannot supply you with what you need, contact
Customer Service at Water Pik Technologies, P.O.
Box 6000, Petaluma, California, 94954, Telephone
(707) 776-8200 extension 245.
NOTE: To supply the correct part it is important
that you state the model number, serial number and
type of gas when applicable. This information is on the
rating plate inside the heater.
11.2 Parts List
The following three pages contain a parts list,
general exploded view and detailed exploded views to
aid in parts identification. Please refer to these pages
when ordering parts for your Lite2 pool/spa heater.