ICP NOLF105A12D, Installation Instructions Manual

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FIGURE 4
1 “FAN OFF” Limit 90 ° F
“FAN ON” Limit
Model : OLR160 110 ° F
2
Model : OUF105, OLF105, OLR105, OUF160,
NOUF105 &NOLF105
130 ° F
‘’HI’’ Limit
Model : OLR160 170 ° F
Model : OUF105, OLF105, OLR105, NOUF105
& NOLF105
180 ° F
3
Model : OUF160 220 ° F
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 a #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 play required by the
instructions;
5. If the burner still does not shut down before a #1 smoke
occurs, check for a blockage of 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 Tables 4.1, 4.2 or 4.3.
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-0355 Rev. B
19