Honeywell ER90 User manual

OWNER’S GUIDE

J. H. • Rev. 1-93 • Printed in U.S.A. • Form Number 69-0737B—1

ER90/100/200

HOME

VENTILATION

SYSTEMS

WELCOME…

…to the world of efficient ventilation. Engineered and

built for long, trouble-free operation, this Honeywell

ER90/100/200 Home Ventilation System provides

proper levels of ventilation with energy savings by

transferring heat and moisture between the exhaust and

fresh air streams. Your home will now be better pro-

tected from indoor pollutants such as formaldehyde,

tobacco by-products, radon, moisture, combustion by-

products and carbon monoxide. With the Honeywell

Home Ventilation System you can expect to enjoy the

benefits of a properly ventilated energy efficient home

for years to come.

Features and benefits:

• Recover up to 85 percent of the total heating or

cooling energy in the exhaust air.

• Reduce air conditioning load by up to 0.4 ton during

air conditioning season.

• Operates condensation free. No drain required.

• Easy-to-clean energy transfer wheel assures years

of trouble-free operation.

CONTENTS

1 69-0737B—1

PAGE

CONTROLS FOR YOUR HOME VENTILATION SYSTEM ................... 2

OPERATING YOUR HOME VENTILATION SYSTEM .......................... 3

GETTING THE MOST FROM YOUR HOME

VENTILATION SYSTEM ................................................................... 4

MAINTENANCE INSTRUCTIONS FOR THE HOME

VENTILATION SYSTEM ................................................................... 6

WARRANTY......................................................................................... 10

BENEFITS OF PERFECT CLIMATE™ AND THE HOME

VENTILATION SYSTEM ................................................................. 11

CONTROLS FOR YOUR HOME VENTILATION SYSTEM

1. FRESH AIR CONTROL

Controls the air flow rate in the

system, allowing the home-

owner to change the air flow

rate as conditions in the home

change. To select the desired

air flow rate position, move the

knob on the controller to the

desired level. See Fig. 1.

2. DEHUMIDISTAT

Select the desired inside

humidity level for the home.

The dehumidistat will override

the fresh air control and cause

the Home Ventilation System

to operate at high speed until

humidity levels are reduced to

the humidistat setting. At this

point, the dehumidistat will turn

off and airflows will return to

the fresh air control setting. For

summer operation, set

dehumidistat to

OFF

position.

3. MASTER SWITCH

This switch is located on the

unit cover. The switch turns off

the unit completely, disabling

the fresh air control,

dehumidistat and blowers. See

Fig. 2.

Fig. 1—Fresh air control for

Home Ventilation System.

FRESH AIR CONTROL

HI LO

RANGE

SELECT HI OR LO RANGE - ADJUST AIRFLOW

FRESH AIR CONTROL

MAX

OFF

MIN

INDICATOR

LIGHT

FRESH AIR

CONTROL

KNOB

RANGE

SWITCH

ER90

ER100/200 REMOTE CONTROL

M3333

HI OFF LO

OFF

ER100/200ER90

MASTER SWITCH IS ALSO

RANGE SWITCH. M3328

Fig. 2—Master switch on the

Home Ventilation System cover.

Your Home Ventilation System comes equipped with a factory supplied

control package consisting of:

3 69-0737B—1

OPERATING YOUR HOME VENTILATION SYSTEM

STEP 1

Set the master

ON/OFF

switch located on the Home Ventilation System to

position. The switch light should come on. The system will now

operate whenever the fresh air control or dehumidistat is turned on.

STEP 2

Turn the fresh air control knob to start the unit blowers. The indicator light

should light. The fresh air control varies the speed of the blower. This

allows you options for the amount of ventilation. The Home Ventilation

System is a balanced system; the amount of fresh air introduced into the

house is always balanced with the amount of air exhausted from the

house. Increase the ventilation rate if you feel the house is stuffy, or if

there is an above average occupancy rate. In most applications, a

midrange setting on the fresh air control will provide proper ventilation. On

some units, you may also select a

range when adjusting

ventilation.

STEP 3

When using a dehumidistat, set the dehumidistat to the desired humidity

level. If your heating system has a powered humidifier, be sure the

dehumidistat is set at least ten percent relative humidity above your

humidistat. It may be necessary to lower the humidistat setting to avoid

condensation in the winter. This ensures a proper humidity level in the

home. Set dehumidistat to

OFF

position for summer operation.

STEP 4

Your system is now fully functional. Perform an occasional check to

ensure that the exhaust and intake outlets for the unit are clear. You

should check that intake outlets are not close to any source of contamina-

tion such as barbecues or automobile exhaust. If you find a source of

contamination close, move it. Be sure to check that the exhaust air is not

being directed to the intake air hood.

GETTING THE MOST FROM YOUR HOME VENTILATION SYSTEM

FRESH AIR CONTROL

The low voltage remote fresh air controls (ER100/200 only) allow conve-

nient 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

speed range. Only certain models have this feature.

2. The control knob allows selection of continuous ventilation rates

within the pre-selected

speed range.

3. This same knob is used to place the ventilator into the

AUTO

mode.

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 combina-

tion of these or other ventilation functions. A remote switch in the

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.

5 69-0737B—1

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.

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.

7 69-0737B—1

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.

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.

M3323

FRESH

AIR FILTER

THUMB-

SCREWS

Fig. 4—ER200 fresh air filter location.

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 Trans-

fer Wheel and belts location.

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.

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 thor-

oughly with household

spray cleaner (Fantas-

tic™or equivalent).

Rinse with warm water.

Use a soft brush to

remove stains between

M3325

ENERGY TRANSFER

WHEEL HUB CAP

DRIVE BELT SET

BLOWER

AND

MOTOR

ENERGY

TRANSFER

WHEEL

Fig. 6—ER200 Energy Transfer

Wheel and belts location.

M3322A

WHEEL DRIVE

PULLEY

WHEEL DRIVE

BELT

WHEEL DRIVE

MOTOR

ENERGY

TRANSFER WHEEL

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