10
18-HE58D1-5
Installer’s Guide
G. START-UP AND CHECK OUT PROCEDURE
1. Make sure power is disconnect by unplugging electri-
cal cord.
2. Check field-supplied control wiring to insure proper
installation and that all connection are tight.
3. Check field-supplied power supply for proper voltage
4. Make sure that unit is securely mounted or sus-
pended and that there are no tools or loose debris in,
around or on top of the unit
5. Check all duct connection to insure they are sealed
6. Check all duct outlets. All outlets must be open
7. Check unit filters.
8. Close unit door – plug in unit.
9. Turn all controls to off
10. Set timer to 10 %; unit should start and run for ap-
proximately six minutes.
11. Go to outside of building and check for airflow at in-
let and outlet hoods. Check that weatherhood screens
are in place and clean. Make sure that the intake
hood is positioned away from any exhausts or other
sources of pollutants.
The quality of the intro-
duced fresh air is the most important function
of this system!
12. If the unit has a push-button timer installed press it
one time after the unit has cycled off from the per-
centage timer’s cycle. Unit should run twenty minutes
and then cycle off.
13. Set percent timer to recommended percentage. (See
application guide) Place peel & stick dot on the face
of the percentage timer to indicate percentage proper
setting.
14. Instruct end user on proper operation procedures and
leave use and care manual with them.
H. START-UP AND OPERATION
OPERATION - VERIFYING UNIT PERFORMANCE
1. Airflow
-
Airflow should be occuring in both air-
streams. Sometimes the easiest place to confirm
that air is moving is at the external wall caps.
If exact airflow is critical, it may be desirable to
permanently install flow measuring stations and
manometers. These can also be used to determine
when filters should be cleaned or changed.
2. Use Static Taps to Measure Airflow Rates
- See
"Cross Core Static Drop" in MEASURING AIR-
FLOW table on page 11.
3. Use Damper to Balance Air Flow to Desired
Rates, if necessary
- The ERV's blower motor are
well suited for volume control by dampers on the
inlet of the unit. One balancing damper is provided
in the unit parts tray.
NOTE:
The unit is consid-
ered balanced if the difference between the two
airflows is not more than 10 CFM.
After measuring the airflow of the unit, the bal-
anced damper may be used to balance airflow if
desired. Place the damper between the duct collar
and the unit for the inlet of the airstream record-
ing higher flow.
NOTE:
Install the damper so that
it slides from the door of the unit down to the duct
collar.
Slowly move the damper further into the duct until
the desired airflow is recorded. Secure the damper
in place using 1/8" tek screws (provided).
NOTE:
Drilling through the case while the unit is running
may cause metal shards to be drawn into the unit.
