COSMOGAS AGUADENS Series, Installation, Operating And Maintenance Manual

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53
AGUADENS
COSMOGAS
8 - MAINTENANCE
8.1 - Care and maintenance
This section must be brought to the attention of the user by the
installer so that the user can make the necessary arrangements
with a qualified service agency for the periodic care and
maintenance of the heater.
The installer must also inform the user that the lack of proper care
and maintenance of this heater and any fuel burning equipment
may result in an hazardous condition.
Installer should discuss contents of section 7 (User’s section)
with the user.
A trained and qualified service technician should perform the
inspection listed in these instructions (see figure 8-1) each year.
CAUTION !!! Appliance maintenance must only
be performed by a professionally qualified technician.
CAUTION !!! Before every maintenance
operation, disconnect the appliance from the electric
power supply, using the relevant switch in the vicinity.
CAUTION !!! Close the manual gas valve before
any maintenance operation
Service and maintenance schedules
Service Technician
Annual Startup:
- Address reported problems (Follow section 8.1.2);
- Check all piping for gas leaks (Follow section 8.1.3)
- Verify flue and air lines in good condition and sealed tight (Follow
section 8.1.4);
- Check water pressure/system piping (Follow section 8.1.5);
- Check control settings (Follow section 8.1.6);
- Check wiring and connections (Follow section 8.1.7);
- Check flame signal (Follow section 8.6);
- Inspect combustion chamber. Clean and vacuum if ther’is presence of
debris and/or products of the combustion (Follow section 8.4).
- Inspect thermal insulations inside the combustion chamber and replace
them if they are cracked or damaged (Follow section 8.3.1)
- Clean condensate siphon and fill with fresh water (Follow section 8.5).
- Check the capacity input (Follow section 6.10).
Figure 8-1 - Service and Maintenance Schedules
8.1.1 - Service recall
In order to maintain maintenance frequency, the parameter
2080
is present in the installer menu (see section 7.8),
which is used to activate the maintenance call (Service)
along with parameter
2081
which is used to set the
operating days which must pass between one intervention
and the next. The control system identifies the operating
days, verifying the burner activity time.
Proceed as follows to activate the call service:
1.- access the Installer menu (see section 7.8)and set
parameter
2080
on
0n
;
2.- access parameter
2081
and set the appliance
operating days which must pass between one call and
the next.
The call will be completed with
SEr
on the display. To
remove the indication
SEr
and renew the call period,
operate as follows:
1.- access the “Installer menu”;
2.- access the parameter
2080
, set it on
rESE
and
press the RESET key.
3.- exit the Installer menu by pressing the RESET key for 5
seconds.
The call time is now renewed and
SEr
appears on the
display.
8.1.2 - Address reported problems
Inspect any problems reported by the owner and correct before
proceeding.
8.1.3 - Check all piping for gas leaks
1. Inspect all gas piping and verify to be leak free.
2. Check for gas leaks: using soap solution, check for gas
leaks from meter to appliance including all pipes and fittings
and heater connection. Use liquid soap solution for all gas
testing.
CAUTION !!! Do not check for gas leaks with an
open flame. Use the bubble test. Ignoring the bubble
test or check for gas leaks with an open flame can cause
explosion, severe personal injury, death, or substantial
property damage.
8.1.4 - Verify flue and air lines in good
condition and sealed tight;
1. Check for obstruction, condensation, corrosion and physical
damage, water stains, any signs of rust, other corrosions or
separation of the vent and air intake piping.
2. Check outside terminations. Screens and louvers should be
free of any debris and must be cleaned as required.
8.1.5 - Check system water pressure/
system piping/expansion tank;
1. Check water piping and accessories for leaks. Slightest
leaks should be corrected.
2. Check the system to be full of water and pressure to remain
stable at correct setting on gauge.
CAUTION !!! Eliminate all system or heater leaks.
Continual fresh makeup water will reduce heater life.
Minerals can build up in sections, reducing heat transfer,
overheating heat exchanger, and causing heat exchanger
failure. Leaking water may also cause severe property
damage.
8.1.6 - Check control settings
1. Set heaters setpoint low enough to end call for heat (see
section 7.4. Gas valve should close and burner should stop
firing. Fan will go into a post purge, then shuts off.
2. Control Safety Shutdown test: with the burner firing, close the
manual gas shut off valve (detail “2” Figure 5-10). Gas valve
should close and burner should stop firing. The boiler will
try for ignition three times, then should lock out with a “Loc
1” error shown on the display. Open the manual gas shut-
off valve, and verify your gas meter. Gas flow must be zero .