Operator's Manual

MAINTENANCE INSTRUCTIONS FOR THE HOME

VENTILATION SYSTEM

CAUTION

Electric shock hazard.

Can cause personal injury or equipment damage.

Disconnect power supply before doing maintenance.

The Home Ventilation System must be maintained on a regular basis for

the best efficiency. Honeywell recommends the Home Ventilation System

to be cleaned and checked at least twice a year, preferably at the start of

each heating and cooling season.

CAUTION

Make sure the master switch is in

OFF

position before doing any

maintenance.

Check and/or clean as follows:

Room Air Filter: Remove and wash this wire mesh filter to assure

proper airflow in the unit. See Fig. 3. Only the ER90/100s have the

room air filter.

THUMB-

SCREWS

M3324

THUMB-

SCREWS

COVER

FRESH

AIR

INTAKE

FILTER

STALE AIR

INTAKE FILTER

Fig. 3—ER90/100 stale air intake filter and fresh air filter location.