SERVICE
intervals. Indicator lights will tell you when to change filter and ultraviolet lamps (30) days in advance.
MERV13 Filter . . . . . change every (6 to 12) months . . . . . service light turns from green to yellow after five months
and to red after six months.
Ultraviolet Lamps . . . . . change very (12) months . . . . . service light turns from green to yellow after eleven months
and to red after twelve months.
CHANGING THE FILTER
Unplug the power cord from the GeneralAire TERSus air purification system. Unscrew the two locking knobs
1.
and remove the door. (Fig. 1)
Remove old filter and replace with new filter. Make sure airflow arrow on filter is pointing to the inside of
2.
module. (Fig. 2)
OPERATION CONTINUED
AIR CYCLES PER DAY
Fan unit on for 10 minutes per hour
Air cycled(24) ------ times per day
Fan unit on for 15 minutes per hour
Air cycled(31) ------ times per day
Fan unit on for 20 minutes per hour
Air cycled(42) ------ times per day
Fan unit on for 30 minutes per hour
Air cycled(63) ------ times per day
Note:
In the event, the existing thermostat does not have the capability to operate the air-handler fan unit
independently of a demand for eating or air-conditioning, it is highly recommended that an (AirCycler) be installed.
Recommended: DC4E (GFI #4685).
handler fan unit for any desired interval. A memory tracks the time the fan unit operates every hour and only cycles
the fan unit that hour if normal requirements for heating and air conditioning have not cycled the fan unit long
enough to meet air purification requirements.
COST OF CONTINUOUS (24) HR PER DAY OPERATION PER MONTH
Electricity cost
per kilowatt hour
.06 kw hr.
.08 kw hr.
.10 kw hr.
Tersus (32.25 kw hours)
per month
=
$1.93
$2.58
#3.22
During periods where the fan unit is being operated for the sole purpose of air purification, usually during the spring
and fall season when there is no requirement for heating or cooling, the cost of running a 1/2 horsepower fan unit
will add approximately $5.36 per month to the normal operating cost. However, this cost is easily o
ff
set in savings on
medication, doctors o
ffi
ce visits, mechanical maintenance and cleaning of fan units, refrigeration coils, dirty air ducts
and last but not least, less house cleaning.
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