18
Table 9. Smart Hub Parameters (Ventilation)
Parameter
Description
Ventilation Rates
Thermostat ventilation CFM parameters are to be adjusted only after the HRV/
ERV set up is completed and the CFMs are known. Once the thermostat’s
CFMs are adjusted they are used with the thermostat’s timer algorithm to
determine how long to run the HRV/ERV and to change from low to high speed
if a 2-stage HRV/ERVs.
Ventilation Rate
Parameter range is 20 - 500 CFM. Default is
130 CFM. Can be adjusted in increments of
1.0 CFM.
Ventilation Rate for
Low Speed
Parameter range is 10 - 200 CFM. Default is
50 CFM. Can be adjusted in increments of
1.0 CFM.
Ventilation Rate for
High Speed
Parameter range is 20 - 500 CFM. Default is
130 CFM. Can be adjusted in increments of
1.0 CFM.
Ventilation Outdoor
Condition Override
Options are Disabled (default) or Enabled.
ASHRAE
Compliance Check
= NO (Ventilation CFM too low to comply
with ASHRAE 62.2) or YES (Current settings
comply with ASHRAE 62.2)
ASHRAE Infiltration
Credit
Parameter range is 0.0 - 200.0 CFM. Default
is 2500 square feet. Can be adjusted in incre
-
ments of 1.0 CFM.
ASHRAE House
Floor Area Serviced
by This Ventilator
Parameter range is 500.0 - 5000.0 square
feet. Default is 2500.0 CFM. Can be adjusted
in increments of 100.0 square feet. The
formula for calculating how much ventilation
is required is:
(total square footage of the home/100) +
(number of b1) x 7.5 cfm)
ASHRAE Number of
Bedrooms
Parameter range is 1.0 - 10.0. Default is 3.0.
Can be adjusted in increments of 1.0.
Ventilation Outdoor Condition Override - Enabled
Ventilation
High Outdoor
Temperature Limit
Parameter range is 60 to 115ºF. Default is
100ºF. Can be adjusted in increments of
5ºF.
While the outdoor temperature is equal to or
higher than the setting for
Ventilation High
Outdoor Temperature Limit
, ventilation
does not run.
When locked out due to high outdoor tem-
perature, it will become unlocked when either
the outdoor temperature is missing, or when
the temperature reported is 1°F less than
the
Ventilation High Outdoor Tempera-
ture Limit
setting when display units are in
Fahrenheit, or is reported as 0.5°C less than
lock out setting when the display units are
Celsius.
Ventilation
Low Outdoor
Temperature Limit
Parameter range is -20 to 55ºF. Default is 0ºF.
Can be adjusted in increments of 5ºF.
While the outdoor temperature is lower than
the setting for the
Ventilation Low Outdoor
Temperature Limit
, ventilation does not
run.
When locked out due to low outdoor tempera-
ture, it will unlocked when the outdoor tem-
perature is missing, or when the temperature
reported is 1°F higher than the
Ventilation
Low Outdoor Temperature Limit
setting
when display units are Fahrenheit, or is
reported as 0.5°C higher than lock out setting
when the display units are Celsius.
Table 9. Smart Hub Parameters (Ventilation)
Parameter
Description
Ventilation High
Outdoor Dew Point
Limit
Parameter range is 45 to 80ºF. Default is
55ºF. Can be adjusted in increments of 5ºF.
While the outdoor dew point is higher than
the setting for the high outdoor dew point
limit, ventilation does not run.
When locked out due to high outdoor dew
point limit, it will become unlocked when the
outdoor dew point is missing, or when the
dew point temperature reported is 1°F less
than the lock out setting when display units
are Fahrenheit, or is reported as 0.5°C less
than lock out setting when the display units
are Celsius.
Summary of Contents for ERV5-130
Page 36: ...36 Figure 43 Wiring Diagram HRV5 270 TPD ECM...
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