ICP OCF105A12C, Инструкция по установке и руководство по обслуживанию

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2.3.7) Overfire pressure test procedure
1. To read the pressure, replace the glass with the washer supplied
with the appliance;
2. After the test, put the glass back in place in the sight glass
assembly;
3. Verify that the pressure reading corresponds to the one specified
in Table 4. Also see Figure 3.1.
FIGURE 3.1
2.3.8) Fan-Limit adjustment
Modification of the “FAN ON” and “HI” limit settings on the Fan-Limit
can cause malfunctioning of the furnace and result in premature wear
of the heat exchanger.
CAUTION
Modification of the factory set limits will void the
warranty.
2.3.9) Limit control check
After operating the furnace for at least 15 minutes, restrict the return
air supply by blocking the filters or the return air register and allow the
furnace to shut off on High Limit. The burner will shut off but the
blower will continue to run.
Remove the obstruction and the burner should restart after a few
minutes.
FIGURE 4
2.3.10) DV-2000™ Blocked intake / blocked vent
test
On side-wall vented furnaces, the DV-2000™ venting system
incorporates a safety shutdown system that will shut the burner down
before #1 smoke occurs due to the presence of a blocked intake or
blocked vent outlet. Test the system as follows:
1.
Ensure that the furnace has been running for at least 10 minutes;
2. Gradually block the intake. The burner flame should shut down
before a #1 smoke reading occurs;
3. Gradually block the vent outlet. The burner flame should shut
down before a #1 smoke reading occurs;
4. If the burner does not shut down before #1 smoke occurs, ensure
that the burner is set up according to Part 2, section 3.4 (2.3.4).
Perform the CO
2
/ Smoke Test, and allow for the 1.5% CO
2
operating headroom required by the instructions;
5. If the burner still does not shut down before #1 smoke occurs,
check for a blockage in the pressure hose, or at the hose
connection points.
IMPORTANT
The DV-2000™ safety shutdown system will shut down
the burner flame during a blocked intake or blocked
vent condition if and only if the burner has been set up
and calibrated in accordance with Part 2, section 3.4
(2.3.4). Perform the CO
2
/ Smoke Test. For instance, if
the burner is adjusted and final-set to a #1 smoke
condition during normal operation, the burner flame
cannot possibly shut down before #1 smoke occurs
during a blockage condition.
2.3.11) BVSO performance test
The purpose of the following test is to check that the electrical outlet
on the furnace, designated to the BVSO, is functional.
1.
Start up the burner;
2. Remove the three-pole plug from the BVSO outlet on the
furnace;
3. The burner must shut-off immediately, while the blower continues
to run to the end of the cool-down cycle.
If the test is not in line with the above, call a QUALIFIED SERVICE
TECHNICIAN.
DNS-0703 Rev. A
18
DNS-0355 Rev. B
200˚ F Limit ‘’HI’’ 3
130˚ F Limit ‘’FAN ON’’ 2
90˚ F Limit ‘’FAN OFF’’ 1
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