-
HRV Core
> remove dust using vacuum cleaner or
rinse with cold water
> Soak and rinse the HRV core in warm
soapy water
-
ERV Core
> remove dust using vacuum cleaner
2. Motors -
Maintenance Free, permanently lubricated
Maintenance (cont’d)
1
3
!
ATTENTION
!
• Do not use cleaning solution for the HRV/ERV core
• Do not use pressure washer on the HRV/ERV core
• Do not place the HRV/ERV core in dishwasher
• Do not use bleach or chlorine
Annual Maintenance
Repeat steps 1 to 5 from the previous section and continue with the following steps:
1. Clean the HRV and ERV core:
- Remove
filters,
Loosen the core locking bracket, Remove the core, carefully grip ends of core and pull
evenly outward
!
WARNING
!
Electrical shock hazard. Can cause
injury or death. Before attempting to
perform any serviceor maintenance,
always disconnect the unit from its
power source.
3. Drain Tube and Drain Pipe -
Inspect drain tube, drain pipe and “P” trap for blockage, mold or kinks. Flush with
warm soapy water and replace if worn, bent or unable to clean.
4. Clean Duct Work if Required -
Wipe and vacuum the duct once every year. The duct work running to and from HRV/ERV may
accumulate dirt. You may wish to contact a heating / ventilation company to do this.
5. Cleaning the Fans -
Fans may accumulate dirt causing an imbalance and/or excessive vibration on the HRV/ERV. A reduction in
the air
flow
may also occur. In new construction this may result within the
first
year due to heavy dust and may occur periodically
after that over time depending on the outdoor conditions.
• open the service door
• remove the core
• disconnect the fan motor wires
• remove the screws securing fan assembly
• pull the fan assembly out of unit
• check for any accumulation on the blades
• clean with a small brush if necessary:
- scrub individual fan blades until clean
- vacuum and wipe
• put the components back in place
• reconnect the power supply and turn the unit back on.
PROBLEMS
POSSIBLE CAUSES
SOLUTION
1. Air
fl
ow is low
- HRV/ERV
airflow
improperly
balanced
(for units without built-in
Automatic Electronic Air-balancing)
-
filter
clogged
- core obstructed
- exterior fresh air supply blocked
- ductwork is restricting
- power supply low (Low Voltage)
- have professional balancer or
contractor balance the unit
- remove and clean
fi
lter
- remove and clean core
- remove and clean the blockage
- inspect duct installation
- switch off the unit immediately and
call the electrician to check the
voltage
2. Senses cold air from Supply
- Exhaust hood outside the house is
blocked
- HRV/ERV
airflow
improperly
balanced
(for units without built-in
Automatic Electronic Air-balancing)
- outdoor temperature is extremely
cold
- remove the blockage and clean the
hood
- have professional balancer or
contractor balance the unit
- placement of furniture or closed
doors is restricting the movement
of air in the home
- install a duct heater
3. Water in the bottom of HRV
- drain pans, drain tube, drain pipe
and “P” trap are clogged
- check for blockage and for kinks in
line
- check connections
- make sure water drains properly
Troubleshooting