ventilation 308.7-1-73 RC-0591-2019
Hodorowski Homes
78 Richmond Hill Dr, Lot 26
SFD w/gas FP 1592 s.f., Gar. 525 s.f.
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An easy, efficient way to freshen the air in your home.
A"breath of fresh air"doesn't have to be just a nice expression.It's something you can experience
every day with the Healthy Climate®Ventilation Control System.This innovative solution provides
proper ventilation—one of the most effective ways to improve the air quality inside your home.
Compatible with any forced-air system,the Ventilation Control System connects to an outside wall to
allow the right amount of fresh air to enter your home.The result is improved comfort,air quality and
efficiency—in a word,refreshing.
A balanced indoor climate you don't
even have to think about Greater flexibility and peace of mind
The system's electronic controller monitors Easy-to-use controls allow you to manage the
outdoor temperatures and indoor humidity amount of fresh air inside your home based on
levels,automatically adjusting fresh air as your individual preferences,giving you increased
needed to ensure the proper balance inside comfort and control.And since the Ventilation
your home.A timer manages the quantity of air Control System comes with a 2-year limited
entering your home for improved efficiency and warranty*,you're ensured fresh,cleaner**indoor
lower energy costs. air for years to come.
�,�, L;,,.,. Healthy Climate'Ventilation Control System
®, Features How it works How it helps
Motorized Damper 1 Works like a valve,automatically Helps keep the air inside
(connects to outside wall) allowing or shutting off fresh air your home fresh,cleaner and
as needed. comfortable.**
24-Hour Timer Manages the quantity of air Helps control energy costs.
entering your home,providing
ventilation only when you need it.
Electronic Controller Helps manage indoor air quality Balances temperature and
by responding to outdoor humidity for improved indoor
temperatures and indoor comfort and air quality.
humidity levels.
User Controls Allows you to manage air 'Offers greater flexibility and
exchange and circulation based I comfort.
L on your individual needs.
*Applies to residential applications only.See actual warranty certificate for details.
""Depending on the outside air quality.
TSOLUTI ONS,
c./M p•
pLT INDOOR AIR QUALITY
`r`� y LVCS
41' HEALTHY CLIMATE®
C
Lennox Ventilation Control System
M;F' '. Bulletin No.210406
PRODUCT SPECIFICATIONS s Ml2o13
Supersedes May ay 2013
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OVERVIEW ltt,: 1
Whole-house ventilation for improved indoor air quality ,
and comfort.
Automatic monitoring of outdoor temperature and indoor
relative humidity.
Compatible with any forced air HVAC system.
Digital Ventilation Controller is installed in the return NOTE-These modes below utilize the Outdoor
duct of a forced air HVAC system. Temperature Sensor(furnished)to increase comfort and
Meets ASHRAE 62.2-2010 Standard for Ventilation. reduce energy costs by preventing extreme hot, cold or
Working in conjunction with the supplied damper,the humid air from being used to ventilate the house.
Digital Ventilation Controller determines when and The Digital Ventilation Controller prevents ventilation
how long to ventilate.This is done through continuous operation when indoor relative humidity is above 55%
monitoring of indoor relative humidity, outdoor and the outside temperature is above 50°F to prevent
temperature,and user-adjusted timer settings. excess indoor humidity levels.
Indoor relative humidity is monitored to help prevent Mode B: Timer Controlled Ventilation(with
high humidity conditions inside the house.The Digital temperature and humidity limits)
Ventilation Controller will not open the damper to the Uses outdoor temperature, indoor humidity, and user-
outside air if there is a chance of raising the humidity adjustable timer settings to determine when ventilation
inside the house to high levels. is required.
In very cold climates, balanced ventilation is Allows normal ventilation operation down to 20°F
recommended. LVCS can be used with an exhaust fan outdoor temperature without heating and down to 0°F
to provide balanced ventilation. Per ASHRAE 62.2- with heating.Also prevents ventilation operation if
2010,very cold climates are those that have more than outdoor air temperature is above 100°F or below 0°F.
900 annual heating degree-days based on 65°F day. Mode C: Timer Controlled Ventilation for Cold
WARRANTY Climates (with temperature and humidity limits)
All Covered Components-Five year limited warranty Uses outdoor temperature, indoor humidity, and user-
in residential applications. adjustable timer settings to determine when ventilation
Refer to Lennox Equipment Limited Warranty certificate is required.
included with unit for specific details. Allows normal ventilation operation down to 0°F
outdoor temperature.Also prevents ventilation
MODE SELECTION operation if outdoor air temperature is above 100°F or
The Digital Ventilation Controller operates in one of four below 0°F.
available modes. Mode D: Timer Controlled Ventilation for Warm
Modes are selected by the installer inside the Digital Climates(with temperature and humidity limits)
Ventilation Controller by means of a 4-way rotary DIP Uses outdoor temperature, indoor humidity, and user-
switch. adjustable timer settings to determine when ventilation
Mode A: Timer Controlled Ventilation(no is required.
temperature or humidity limits) Allows normal ventilation operation down to 40°F
Used for time-based ventilating regardless of outdoor temperature without heating and down to 0°F
temperature or humidity. with heating.Also prevents ventilation operation if
This mode may be required by local codes. outdoor air temperature is above 90°F or below 0°F.
1
FEATURES
COMPONENTS Controller Settings
Kit includes Digital Ventilation Controller, motorized Ventilation Time-Set by the knob on front exterior of
damper,outdoor temperature sensor, and 24 VAC controller. Unlimited settings from Off to 60 minutes.
transformer. Test-"TEST"setting is all the way clockwise on the
Ventilation Time knob.This setting is used to check the
Controller Controller at installation. In Test mode the Ventilation
Input:22 to 30 VAC,2.0VA nominal Controller activates the HVAC blower and opens the
Damper Output: 18 to 30 VAC, 10VA nominal damper for one minute or until the knob is taken off the
Temperature accuracy:±5°F "Test"setting,whichever occurs first.After the minute
Relative Humidity Accuracy:±5%RH has passed,the Ventilation Controller will not work
until the knob is placed in the"off'position for several
Ventilation Time: 0-60 minutes(selectable) seconds then setting it to the desired ventilation time.
Must be installed at least 6 inches up-stream from fresh
air intake duct, humidifier or humidifier bypass duct Outdoor Temperature Sensor
work. Senses outdoor temperature and reports to the
Indoor Humidity is measured in the return duct with a controller.
sensor built into the Controller. Sensor should be installed in the fresh air intake hood
NOTE-This system may not be installed with a power- (field provided)or in the intake duct, no more than three
feet from the outside wall.
robbing thermostat.
If the outdoor temperature is above 100°F or below 0°F,
the damper will not open.
Damper
6 in.diameter, 10-3/4 in. length
Normally-closed, power-open
24 VAC/0.31 amp/Two-wire
Transformer
120V primary, 24 VAC secondary
10VA output
VENTILATION TIME SETTINGS
VENTILATION TIME SETTING-MINUTES PER HOUR
Size of House- Number of Bedrooms
sq.ft. 2 3 4 5
1000-1500 20 min. 25 min. 30 min. 35 min.
The time settings determine when and how long 1501-2000 25 min. 30 min. 30 min. 35 min.
to ventilate.The following chart can be used to
determine the time settings. For a more precise way 2001-2500 25 min. 3 min. 35 min. 40 min.
of determining ventilation time,see the Ventilation 2501-3000 30 min. 35 min. 40 min. 40 min.
Worksheet on the following page. 3001-3500 30 min. 35 min. 40 min. 45 min.
NOTES-Table based on ASHRAE 62.2-2010
Based on 20 ft.flexible fresh air duct with 0.15 in.w.c.static pressure.
A longer dud or lower return static pressure will increase the ventilation time
required.
Local codes may affect the time settings.
LVCS Ventilation Control System I/Page 2
A
VENTILATION WORKSHEET
Quality of air is regulated by preventing ventilation when CFM required is based on ASHRAE Ventilation
the outside air is too hot,too cold,or could raise the Standard,the area and occupancy of the house.
relative humidity in the home above 55%. CFM delivered is based on length of fresh air intake
Quantity of air is regulated by setting the Ventilation duct, static pressure of the return, and the type of duct.
Time. The following three steps will help assure proper
adjustment of the controller.
Step 1 -Determine Ventilation Air Required(per ASHRAE Standard 62.2-2010)
Find square footage of house on -- i i . 1 1 1 1 i 1
_- I ,
horizontal axis. 1 .�-.. ��,, •;
Example:A 2300 sq.ft.3 bedroom ' i , It
Draw a vertical line up from the too home would require 53CFM ' I I- —i"I' — r wato10-. 1
bottom to the point that intersects the ; -1 1 y I . 10, .;ps
line for the number of bedrooms in -I-I .__� _. _.r .- ' _i_: _ ,•a "
the house. w T y t-Tt 1 3a
From the point where the house size ..�--, . ' ._ I V_ r 3»�°°"'
and bedroom lines intersect,draw i w I
a horizontal line to the left(vertical) 1 ' • ! ' : ' i - ,
axis to determine how much r " i ' 11 ` ( ' ` i
ventilation air(CFM)is required. w 1---r 1 1 i- -}-
NOTE-ASHRAE 62.2-2010 calls for I... i , `-� I: ' j 1 ` - '
1 CFM of ventilation per 100 square 1 rt I 1 + ` { _
feet of house plus 7.5 CFM per i ! II l _I 1 ,
__I
bedroom plus an additional 7.5 CFM. 1 :
-t =
too. f500 2000 2500 3000 3500 4000 4500 WOO
House sl2e(sq.ft.)
Step 2-Determine How Much Ventilation Air the System will Deliver
Ventilation Air the System Will Deliver-CFM
Using the table, ,
Static Pressure of Return Duct-in.w.c.
determine how much Length of 6 in.
CFM can be brought diameter 0.05 0.10 0.15 0.20 0.25 0.30
into the house based fresh air intake duct Flex Rigid Flex Rigid Flex Rigid Flex Rigid Flex Rigid Flex Rigid
on the length and type 10 ft. 60 65 85 90 105 110 120 125 135 140 150 160
of fresh air duct used 20 ft. 55 60 80 85 100 105 115 120 130 135 140 150
as well as the static 30 ft. 50 55 75 80 95 100 110 115 125 130 130 140
pressure in the return
air duct. 'For the static pressure shown,the flex duct is laid loose with two wide 90°bends and the damper fully open.For rigid pipe the
values are based on two 90°elbows and the damper fully open.For both types of duct the air intake is terminated with a metal vent
hood with a birdscreen.Adjust airflow up or down for variations,including elbows or bends,or if the length of duct isn't listed.
300 I I j
Step 3-Ventilation Controller Setting ' '
Example.If 53 CFM is required and 110 1 I 1 1 • I
CFM is delivered.set vendlason ..••�. ' �!_.�_--- ,——— l..._.
... controller knob to 30 minutes per hr. ..�' •_.,.i.--_.._._ ! . I 1
Using the value obtained in Step 1, tee.___________.__._.____.__-1_Y__- - I _ I I i--1
locate the CFM required on the left 11 1 i I i i
(vertical)axis and draw a horizontal 4_ i-_ ' I r `P 1
line to the end of the chart. i T' ,,y -
Usingthe value obtained in Step - 1 1 i i i
i i - 1 I .�
2, locate the CFM Delivered on the + I - I i. 1 - -- 1
horizontal axis and draw a vertical LL 150-- 1 �_I- 3 _.-, r._— ' i
line up from the bottom to a point fir. _ i_ _ 1 .= -I--
-
beyond the vertical CFM required • Io ' i 1 i so
1
line. 1.. -T� ? l ,. _,
The point where the two lines 4 i ( 4 r 1. ,
intersect indicates where the - r L.I. l__
Ventilation Time should be set. It -1..�r
may be necessary to estimate the 1111 I
precise setting if the intersection - - -' �7 _ ,_
point falls between two lines. '�*' ` t -' I - ; . .,
50 100 150 200 250 300
CFM Delivered
LVCS Ventilation Control System/Page 3
REVISIONS
Sections Description of Change
Features Damper actuator updated.
ii
Visit us at www.lennox.com
For the latest technical Information,www.lennoxdavenet.com
Contact us at 1-800-4-LENNOX
NOTE-Due to Lennox'ongoing commitment to quality,Specifications,Ratings and Dimensions subject to change without notice and without incurring liability.
Improper installation,adjustment,alteration,service or maintenance can cause property damage or personal injury.
Installation and service must be performed by a qualified installer and servicing agency. ®2016 Lennox Industries.Inc.