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GETTING THE MOST FROM YOUR HOME VENTILATION SYSTEM
FRESH AIR CONTROL
The low voltage remote fresh air controls (ER100/200 only) allow convenient operation of the ventilation system from the living area of your home.
The control performs the following four functions:
1. A two-position HI-LO range switch lets you place the ventilator into
LO or HI speed range. Only certain models have this feature.
2. The control knob allows selection of continuous ventilation rates within the pre-selected HI or LO speed range.
3. This same knob is used to place the ventilator into the AUTO mode.
In AUTO, the blower is operated by the dehumidistat and/or override switches that can be installed as options with your Home
Ventilation System.
4. An indicator light above the HI-LO switch verifies operation of the unit.
MOISTURE CONTROL
Continual operation of the ventilation is recommended for optimum reduction of indoor air pollution and control of humidity. Increased moisture removal will always occur at maximum ventilation rates. This setting should be used when first occupying a newly built home to remove excess moisture from new wood, plaster, cement and other moisture absorbing construction materials. If your system is wired to a dehumidistat, preselected moisture levels can be maintained automatically. Severe moisture conditions can be controlled with the sensible energy transfer wheel when the indoor air contains more moisture than the outdoor air.
REMOTE OVERRIDE SWITCH FUNCTIONS
Your ventilation system may incorporate one or more remotely located switches to activate bathroom ventilation, a dehumidistat, or any combination of these or other ventilation functions. A remote switch in the ON position will cause the ventilator to operate at high speed until the override switch is turned off. The ventilator will automatically return to its previous setting on the fresh air control. The remote override switch, in combination with the AUTO mode, is especially useful for intermittent bathroom exhaust when continuous ventilation is not required. Continuous operation is recommended except when the home is unoccupied, or when proper ventilation is provided by other means like open doors and windows.
4
FROST CONTROL
Some Home Ventilation System models have built-in automatic preheat frost control systems that allow the unit to operate in cold weather regions.
Areas where the winter design temperature does not fall below 5
°
F [-15
°
C] will not require a preheater. The function of the frost control is to ensure that the intake air brought into the Home Ventilation System is not below
10
°
F [-12
°
C]. This ensures proper operation of the Home Ventilation
System. Operation is indicated by the indicator light located on the Home
Ventilation System cabinet next to the PRESS-TO-TEST button. The indicator light is on when the outdoor temperature is below 10
°
F [-12
°
C] or the TEST button is pressed. The preheat system is functioning if the indicator light comes on when the TEST button is pressed. Test the preheat system before the heating seasons starts each year. Follow the instructions on the cabinet for testing.
IMPORTANT: Release the TEST button as soon as the neon light comes on. Pressing the TEST button longer can cause overheating of the
Home Ventilation System.
5 69-0737B—1
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.
Fig. 3—ER90/100 stale air intake filter and fresh air filter location.
THUMB-
SCREWS
COVER
STALE AIR
INTAKE FILTER
FRESH
AIR
INTAKE
FILTER
THUMB-
SCREWS
M3324
6
Fresh Air Filter: Replace the fresh air filter at least twice a year. To remove filter:
1. Unscrew access panel thumbscrews to remove the filter access panel. See Figs. 3 and 4.
2. Slide the fresh air filter out of the Home Ventilation System.
3. Check filter and replace if clogged.
4. Place the filter access panel back on the Home Ventilation
System and tighten the thumbscrews.
Fig. 4—ER200 fresh air filter location.
FRESH
AIR FILTER
THUMB-
SCREWS
M3323
Weather Caps: Check to ensure that the outside fresh air inlet and exhaust weather caps do not become clogged with debris like grass, leaves and snow.
Energy Transfer Wheel: Check the energy transfer wheel for build-up of dirt and debris.
NOTE: Energy transfer is not affected by stained surfaces.
To remove and clean the ER90/100s Energy Transfer Wheel:
1. Unscrew the screws holding the Home Ventilation System cover and remove the cover. See Fig. 5.
2. Take out the center divider.
3. Loosen the screw in the center of the wheel hub cap.
4. Rotate hub cap counterclockwise and remove.
5. Grasp hub with two fingers and take straight off the drive shaft.
IMPORTANT: Lift only by the hub.
7 69-0737B—1
5. Spray the energy transfer wheel thoroughly with household spray cleaner (Fantastic™ or equivalent). Rinse with warm water. Use a soft brush to remove stains between the plastic windings.
Shake excess water from the wheel.
6. Replace the wheel on the drive shaft.
NOTE: Rotate the wheel counterclockwise until the pin in the shaft has engaged in the slot in the bottom of the hub. The end of the drive shaft and the face of the hub will be flush.
Fig. 5—ER90/100 Energy Transfer Wheel and belts location.
ENERGY
TRANSFER
WHEEL
ENERGY TRANSFER
WHEEL HUB CAP
7. Put hub cap on, rotate in clockwise direction, tighten screw.
8. Install the center divider.
9. Replace the Home
Ventilation System cover and tighten the screws.
DRIVE BELT SET
BLOWER
AND
MOTOR
M3325
Fig. 6—ER200 Energy Transfer
Wheel and belts location.
ENERGY
TRANSFER WHEEL
WHEEL DRIVE
BELT
WHEEL DRIVE
PULLEY
WHEEL DRIVE
MOTOR
M3322A
To remove and clean the
ER200 Energy Transfer
Wheel:
1. Unscrew the screws holding the ventilator door and open the door.
2. Take out the center divider.
3. Remove the belt from the rim of the wheel.
See Fig. 6.
4. Unscrew the screw in the center of the hub.
5. Use the rim of the wheel and lift the wheel straight off the drive shaft.
6. Spray the energy transfer wheel thoroughly with household spray cleaner (Fantastic™ or equivalent).
Rinse with warm water.
Use a soft brush to remove stains between
8
the plastic windings. Shake excess water from the wheel.
7. Replace the wheel on the drive shaft.
8. Replace and tighten the screw in the center of the hub.
9. Replace the belt on the wheel.
10. Reinstall the center divider.
11. Close the ventilator door and tighten the screws.
Belt Drives: If the blower is operating (air coming out of fresh air vent) but energy transfer wheel does not rotate, check the pulley system.
NOTE: ER90/100 will require removing the energy transfer wheel to check the pulley system.
See Figs. 5 and 6. Replace broken or stretched belts.
If the blower fails to operate with the master switch in the ON, HI or
LO position and the Fresh Air Control on, check circuit breakers in house electrical panel. If power is supplied to unit but blower does not operate, contact your local HVAC contractor.
9 69-0737B—1
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