Lochinvar CLN 120080, Instruction Manual

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The installer may be able to observe and correct certain problems
which may arise when the unit is put into operation. HOWEVER,
it is recommended that only a qualified service agency, using
appropriate test equipment, be allowed to service the heater.
As preliminary step, check wiring against diagram, check for
grounded, broken or loose wires. Check all wire ends to be sure
that they are making good contact.
IGNITION CONTROL SYSTEM
Before calling your qualified service agency, the following
checklist should be examined to eliminate obvious problems
from those requiring replacement or servicing.
• Check that “main gas shutoff valve” is fully open and that gas
service has not been interrupted.
• Check electrical supply to the water heater for possible blown
(or tripped) fusing or power interruption. Also check the 3 amp
fuse on the front of the digital thermostat (Fig. 2).
• Is the water temperature in tank below the thermostat dial
setting on the water heater thermostat (calling for heat)?
• It is possible that the high limit (E.C.O.) has functioned to shut
off the water heater. See page 7 - High Limit Switch for reset
procedure. Contact your service agent if limit continues to
function to shut off water heater.
and pour the UN•LIME into the heater.
7. Lower container, you may have to place the container on
its empty carton to prevent the UN•LIME from flowing back
into the container.
8. Let UN•LIME remain in the heater for 5 minutes and then
lower the container to the “Drain” Position, see Figure 27.
9. Deliming activity is indicated by foaming on the surface of the
UN•LIME. If there is deliming activity, repeat steps 6 thru 8.
Normally, lime removal will be completed within one hour. Severe
build-up of lime may take longer than an hour to complete descaling.
Note: To check UN•LIME for continued use, place some scale
or white chalk in a glass with a small amount of UN•LIME. If
the material is vigorously dissolved by the UN•LIME, it can be
reused; if not, the UN•LIME should be replaced.
FIGURE 27.
9. Install the long plastic male adapter insert fitting into the
drain valve opening of heater after applying Teflon tape or
paste to threads. Tighten firmly by hand and use wrench or
adjustable pliers to check for secure connection. Do not over
tighten to avoid damage to threads and fittings.
Prepare the Up-N-Down Transfer Kit
The next step is the preparation on the Up-N-Down Transfer Kit,
if you have not already done so:
1. With the 5 gallon Up-N-Down container in the vertical
position, unscrew the plastic vent cap in the handle and
pierce the plastic membrane over the vent boss under the
cap to allow the container to vent.
Note:
If your container does not have the vent cap and
vent boss, drill a 3/16” hole in the handle. When you have
finished deliming you will be able to plug this drilled vent with
the stainless steel screw that is supplied with the kit.
2. Remove the container’s cap and cut the plastic membrane
located in the 3/4” IPT opening in the cap. Take care to not
damage the threads.
3. Find the 3/4” male adapter, apply teflon tape to the threaded
end and screw it into the 3/4” IPT opening in the cap.
4. Put cap with male adapter back on the container and slide
3/4” hose over end of male adapter and fasten in place using
hose clamp provided.
Delime using Flo-Jug Method
5. Slide the hose clamp over end of hose and slide hose over
the male adapter in the water heater drain opening and
secure in place using hose clamp.
6. Lift container to the “Pour” Position, see Figure 27, being
careful to keep the vent in the handle above the liquid level
SERVICE
SYSTEM DIAGNOSTICS
Your water heater is equipped with an ignition control that
incorporates a diagnostic system to assist in troubleshooting the
water heater. The green LED codes on the ignition module are
as follows:
TABLE 9.
2 FLASHES 5 Minutes Retry Delay
3 FLASHES Recycle - flame failed during run
4 FLASHES Flame sensed out of sequence
6 FLASHES Control Internal Error
7 FLASHES Flame rod shorted to ground
8 FLASHES Low secondary voltage supply
If an internal control failure is indicated, replace the ignition control.
Use this diagnostic system in conjunction with “TROUBLESHOOTING”
and the “SEQUENCE OF OPERATION” to troubleshoot the water
heater.
ELECTRICAL SERVICING
Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation.
Verify proper operation after servicing.