Healthy Climate Solutions ERV5-130, Installation Instructions Manual

Page: 15 / 60

15
DETERMINING VENTILATION RATE
The following information is used to set both the timed or
ASHRAE compliant high and low speed ventilation rate for
ERV or HRV single and two-speed units when using either the
iComfort E30, M30 or S30 thermostats.
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.
See “Installer Selectable High Speed Settings” on page
37 for configuring CFM on the ERV / HRV equipment.
Ventilation Rate for High Speed
When using ERV/HRV as a single or two speed units you
must set the blower to the highest speed to balance airflow
to be ASHRAE 62.2 compliant.
•
Use the door port balancing chart (see “Airflow Balanc -
ing Charts” on page 41) or pitot tube to determine the
ventilation rate.
• Use the calculated CFM rate in the S30 or E30 config -
uration set up for both timed and ASHRAE Compliant
CFM rate at high speed.
Ventilation Rate for Low Speed
Use the following procedure to set the system blower to low
speed on two-speed units.
•
When a Pitot tube is not available use the 0.1” w.g static
value CFM for speed 1 - low from “Table 6. Optional
Fan Curves Speeds (Factory Tested)” on page 7 as
default.
• Use the calculated CFM rate in the S30 or E30 configu -
ration set up for a ASHRAE Compliant CFM rate at low
speed.
VENTILATION CONTROL MODES
The following tables provides a quick reference to which
parameters are applicable to specific equipment.
Table 1. Ventilation Control Modes
Ventilation Control Mode
Fresh Air
Damper
1 Speed HRV 2 Speed HRV 1 Speed ERV 2 Speed ERV
Timed
Ventilation Minutes Per Hour
(0 to 60 min., default is 20 min.)
√ √ √ √ √
Ventilation Rate
(20 to 500 cfm, default is 130 cfm)
- - - √ - - - √ - - -
Ventilation Rate for Low Speed
(10 to 200 cfm, default is 50 cfm)
- - - - - -
√
- - -
√
Ventilation Rate for High Speed
(20 to 500 cfm, default is 130 cfm)
- - - - - -
√
- - -
√
Ventilation High Outdoor Temperature Limit
(60 to 115°F, default is 100°F)
√ √ √ √ √
Ventilation Low Outdoor Temperature Limit
(–20 to 55°F, default is 0°F)
√ √ √ √ √
Ventilation High Outdoor Dew Point Limit
(45 to 80°F, default is 55°F)
√ √ √ √ √
ASHRAE (62.2)
In this mode the thermostat can assist the installer by validating the ventilation CFMs are capable of meeting the ASHRAE required ventilation volumes, but the ther-
mostat has no ability to control CFM from the HRV/ERV.
Ventilation Rate
(20 to 500 cfm, default is 130 cfm)
- - -
√
- - -
√
- - -
Ventilation Rate for Low Speed
(10 to 200 cfm, default is 50 cfm)
- - - - - -
√
- - -
√
Ventilation Rate for High Speed
(20 to 500 cfm, default is 130 cfm)
- - - - - -
√
- - -
√
ASHRAE Compliance Check NO YES YES YES YES
ASHRAE Infiltration Credit
(0 to 200 cfm, default is 0 cfm)
√ √ √ √ √
ASHRAE House Floor Area Serviced by this Ventilator
√ √ √ √ √
ASHRA Number of Bedrooms
√ √ √ √ √
Ventilation Outdoor Condition Override - Enabled
Ventilation High Outdoor Temperature Limit
(
60 to 115°F, default is 100°F
)
√ √ √ √ √
Ventilation Low Outdoor Temperature Limit
(
–20 to 55°F, default is 0°F
)
√ √ √ √ √
Ventilation High Outdoor Dew Point Limit
(
45 to 80°F, default is 55°F
)
√ √ √ √ √