Healthy Climate Solutions ERV5-130, Installation Instructions Manual

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11
Shaping Ducting to Fit Oval Ports
Applicable Units:
HRV3-150-TPD, HRV5-200-TPD, HRV6-HEX095-TPD, HRV5-270-
TPD-ECM, ERV5-150-TPD and ERV5-175-TPD
These units have oval supply and return ports. This enables
these units to be as space efficient as possible. Circumfer -
ence of the port remains the same as round ducting. Simply
bend a standard duct fitting to the correct shape and attach
to the oval port using the same method as for a round port.
Figure 6. Shaping Ducting to Fit Oval Ports
Requirements
The following appliances should not be connected to the
ERV/HRV unit:
• Clothes dryer
• Range top
• Stove top fan
• Central vacuum system
NOTE: Failure to follow this instruction will void the ERV/
HRV unit warranty.
DANGER
Risk of Carbon Monoxide Poisoning and/or Explosion.
Can cause injury or death.
Combustion and flue gases from heating appliances must
never be allowed to enter living spaces.
ERV/HRV unit must be properly balanced (see page 30
or 32) to prevent negative pressure in structure. Negative
pressure can cause back−drafting of combustion gases
in other household appliances such as Gas Furnaces, Oil
Furnaces, Hot Water Heaters, Wood Stoves, Fireplaces,
etc.
(5-Port HRV models only) Defrost cycles will cause
negative pressure in equipment room. Install ductwork
and route to areas that do not contain appliances with
vented combusted gases. Never connect a return or
supply duct to other heating units such as fireplaces,
wood stoves.
Defrost Cycle (ERV/HRV)
The ERV/HRV has an electronically controlled defrost sys-
tem. The defrost cycle is activated when the outdoor tem-
perature drops below 27ºF (−3ºC). Incoming fresh air is
measured to set the defrost times and the run times while in
the defrost mode. The three defrost settings are:
•
At 27ºF (−3ºC) ERV/HRV runs in defrost for three min -
utes and runs in ventilation for 25 minutes
• At −4ºF (−20ºC) ERV/HRV runs in defrost for 4.5 min -
utes and runs in ventilation for 17 minutes
• At −31ºF (−35ºC) ERV/HRV runs in defrost for 7 min -
utes and runs in ventilation for 15 minutes
No remote device can override this defrost mode or se -
lected speed until the cycle is complete. After the cycle is
completed the ERV/HRV defaults to previous settings. If the
cycle is completed and the thermistor continues to measure
defrost temperature the defrost cycle is repeated.
Recirculating Damper Defrost
Applicable Units:
HRV3−150−TPD, HRV5−150, HRV5-200-TPD, HRV6-HEX095-TPD,
HRV5-270-TPD-ECM, ERV5-150-TPD, ERV5-175-TPD and ERV5-130)
During defrost a motor driven damper door mechanism
closes off the supply air from outside allowing exhaust air to
recirculate through the unit’s core. During defrost cycle no
ventilation is occurring. After the defrost period, the damp-
er operates in the opposite direction to reopen the fresh
air port. Defrost cycle repeats until the temperature rises
above 27ºF (−3ºC).
Damper Defrost − Five Port Model (HRV3−195) - During
defrost a motor driven damper door mechanism closes off
the supply air from outside allowing a fifth port to open en -
abling warm air to be drawn in from around the unit. During
defrost cycle stale air exhaust is still occurring.
After the defrost period, the damper operates in the oppo-
site direction to reopen the fresh air port.
Defrost cycle re-peats until the temperature rises above
27ºF (−3ºC). (The defrost port can also be ducted to anoth -
er location.)
Ventilation Operational Modes for both ERV
and HRV
Today’s modern, air tight homes require fresh outdoor air to
maintain a healthy indoor air environment. The amount of
ventilation required in a home depends upon:
• The number of occupants and their activity levels
• The way the home was built
•
Personal preferences for air
The ERV/HRV introduces fresh air to your home while re-
covering energy from the air it exhausts. Specifically, an
ERV/HRV that is properly installed, operated, and main-
tained will:
• Exhaust stale and contaminated air
• Introduce an equal amount of fresh outdoor air