Horizontal Installations; Normal Sequence Of Operation; Power Up; Heating Mode - Intertek MES80 Installation Instructions Manual

Consider installing an air cleaner with deep-pleated media filter at the time of furnace installation. A deep-pleated filter with
a MERV rating of 8 (minimum) will often provide better filtration to protect equipment and the air distribution system than a
standard 1" filter and often has lower static pressure loss than a 1" filter. Also a deep-pleated filter will typically require less
frequent replacement intervals. Avoid using highly restrictive 1" filters which produce static pressure loss greater than .25"
W.C. In some installations the minimum filter size required (consult filter sizing chart) will not lend itself to a filter installation
on the side of the furnace. The installation of a centrally installed air cleaner cabinet or a return duct filter installation may
offer more practicality.
Clean Comfort™ brand MERV 11 air cleaners have 5¼" media filters and are available in the following configurations. Consult
your distributor for information on our complete line of IAQ Clean Comfort™ products.
Air cleaner installation location Maximum Heating Airflow Filter (Media) Dimensions Part Number
Side or bottom return
Side or bottom return
Side or bottom return
Side or bottom return
Side return
(for 2 separate returns)
Side return (Right angle)
Bottom return (platform)
Bottom return (platform)
AM11-5
Family

Horizontal Installations

Filters must be installed in either the central return register or
in the return air duct work.

Normal Sequence of Operation

Power Up

•
120 VAC power applied to furnace.
•
Integrated ignition control performs internal checks.
•
LED light will flash once at power up and then remain
on.
•
Integrated ignition control monitors safety circuits
continuously.
•
Furnace awaits call from thermostat.
1200 CFM
1600 CFM
1600 CFM
2000 CFM
2 X 1600 CFM
2000 CFM
2000 CFM
2000 CFM
AM11-5RA
Family
Table 8

Heating Mode

The normal operational sequence in heating mode is as
follows:
•
R and W thermostat contacts close, initiating a call for
heat.
•
Integrated control module performs safety circuit
checks.
•
Induced draft blower is energized for 30 second pre-
purge period causing pressure sensor contacts to close.
•
Igniter warm up begins after 30 second prepurge
expires.
•
Gas valves open at end of igniter warm up period,
delivering gas to burners and establishing flame.
•
Integrated control module monitors flame presence.
Gas valve will remain open only if flame is detected.
20
16 in X 20 in x 5¼"
16 in X 25 in x 5¼"
20 in X 20 in x 5¼"
20 in X 25 in x 5¼"
2, 16 in X 25 in x 5¼"
20 in X 25 in x 5¼" AM11-2025-5RA AM11-5RA
20 in X 25 in x 5¼" AM11-2832-5PP
20 in X 25 in x 5¼" AM11-2843-5PP
Air
Cleaner
Family
AM11-1620-5
AM11-1625-5
AM11-5
AM11-2020-5
AM11-2025-5
AM11-3225-5 AM11-3225
AM11-5PP
AM11-5PP
Family