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SlimFit
™
commercial condensing gas
Maintenance procedures — MONTHLY
Check automatic air vents
1. See illustration at right.
2. Remove the cap from any automatic air
vent in the system and check operation
by depressing valve "B" slightly with the
tip of a screwdriver.
3. If the air vent valve appears to be work-
ing freely and not leaking, replace cap
"A", twisting all the way on.
4. Loosen cap "A" one turn to allow vent
to operate.
5. Have vent replaced if it does not operate
correctly.
PERIODIC MAINTENANCE
Perform DAILY procedures plus the
following additional procedures . . .
Test the low water cutoff
1. The boiler must be operating in central heating or DHW mode
for the following test to be performed.
2. Press the LWCO Test button — Hold the Test button until the
Sola control indicates a low water cutoff lockout condition (a
few seconds).
3. The SlimFit boiler's Sola control will shut down the boiler on
manual reset.
4. See page 7 for information on Sola lockout behavior.
5. Press the LWCO Reset button on top of the boiler to reset the
low water cutoff.
6. Press the Control reset button on top of the boiler (see Figure 8)
to reset the Sola control.
7. The boiler should return to normal operation.
If the low water cutoff fails to cause a manual reset
lockout condition, immediately turn off all power to
the boiler and contact your boiler technician.
EVERY 6 MONTHS MAINTEN.
Perform DAILY and MONTHLY
procedures plus the following additional
procedures . . .
Check the boiler water and gas piping
1. Perform gas leak inspection per steps 1 through 7 of the Operating
Instructions, Figure 1, page 4.
Part number 550-100-117/0714
-
fired water boiler
(if used)
Figure 8
2. If gas odor or leak is detected, immediately shut down boiler fol-
3. Visually inspect for leaks around internal water piping. Also
Operate the relief valve
1. Before proceeding, verify that the relief valve outlet has been piped
2. Read the boiler pressure/temperature gauge to make sure the sys-
3. If water flows freely, release the lever and allow the valve to seat.
— User's Manual
Low water cutoff test and reset buttons
Push to test low water cutoff
Low water cutoff reset switch (push
to reset after LWCO lockout)
lowing procedures in the Operating Instructions, Figure 1, page 4.
Call a qualified service technician.
inspect external water piping, pumps, relief valve and fittings.
Immediately call a qualified service technician to repair any leaks.
Have leaks fixed at once by a qualified service techni-
cian. Failure to comply could result in severe personal
injury, death or substantial property damage.
to a safe place of discharge, avoiding any possibility of scalding
from hot water.
To avoid water damage or scalding due to valve opera-
tion, a metal discharge line must be connected to relief
valve outlet and run to a safe place of disposal. This
discharge line must be installed by a qualified heating
installer or service technician in accordance with the in-
structions in the SlimFit Boiler Manual. The discharge
line must be terminated so as to eliminate possibility
of severe burns or property damage should the valve
discharge.
tem is pressurized. Lift the relief valve top lever slightly, allowing
water to relieve through the valve and discharge piping.
Watch the end of the relief valve discharge pipe to ensure that
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