Product Brochure

UnderAire
™
Crawl Space Ventilators
Model V1 V1D V2D
Performance 110 CFM 110 CFM 220 CFM
Motor 115/1/60 115/1/60 2 @ 115/1/60
0.30 amps 0.30 amps 0.60 amps
Dehumidistat OFF/ON or OFF/ON or
20-80% RH 20-80% RH
Thermostat Opens at 40
0
F Opens at 40
0
F Opens at 40
0
F
Dimensions 14 3/8” x 6 7/8” x 2” 18” x 9” x 2” 18” x 9” x 2”
Trim Dimensions 93/8”x53/8” 93/4”x6” 14”x6”
Specifications
Optional Model DH10
dehumidistat available
separately
How to determine the
number of UnderAire
™
Ventilators needed:
Calculate the cubic area of the crawl space by
multiplying the length x width x height. Divide
this number by 15 to determine the minimum
CFM necessary to fully ventilate the space in 15
minutes. Example: 20' wide x 40' long x 3' high
crawl space = 2,400 cubic ft. 2400 cubic ft. ÷ 15
minutes = 160 CFM of ventilation. Choose two V1
or V1D ventilators or one V2D ventilator.
XchangeR
™
Ventilation Fans
For Dehumidification
The X2D includes a Dehumidistat
control to automatically cycle based
on user set RH (Relative Humidity)
level. The model X2R requires the
DH2P plug-in Dehumidistat for
automatic RH based operation.
Model X2D Includes Automatic
Dehumidistat Control
Turn either fan on or off and automati-
cally operate your basement fan by ad-
justing the dehumidistat control to the
level needed. Rotate the dial fully clock-
wise for constant operation. For X2R
models, order optional DH2P Control.
6"
RIGID
RIGID
OR FLEX
OR FLEX
DUCT
DUCT
Model X2R
Add the SCP plug-in speed control
for variable performance or use
any plug-in timer to cycle as
desired.
If using the XchangeR
in an enclosed utility
room with chimney-
vented heating
equipment, use the
optional DT2-6 6”
duct take-off and G-6
diffusers to pull ex-
haust air from an
adjacent room.
Model
SCP
Model
DT2-6
I SWR Switch-It Wireless 120v Outlet
I G-6 6” White Plastic Exhaust / Intake Grille
I BD-6 6” Spring Return Back Draft Damper
(for use with X2R)
Dimensions
Model X2D
Optional Accessories
Available From:
Model X2D & X2R
1 Fan 2 Fans
Specifications
TJERNLUND PRODUCTS, INC.
1601 Ninth Street White Bear Lake, MN 55110-6794
Phone: [phone].255.4208 Fax: [phone]
Visit our web site: tjernlund.com Email: [e-mail]
Copyright © 2016 Tjernlund Products, Inc. P/N 8500720 REV. A
For Timer Based
Air Exchange
.33 Air Change / Hour (ACH) recommended
Basement FT
2
XchangeR Run
(8 foot ceiling) Time/Hour
1Fan(90 CFM) 2 Fans (180 CFM)
500 15 min 7.5 min
750 22 min 11 min
1000 30 min 15 min
1250 37 min 18.5 min
Voltage 120 120
Watts 20 40
Amps 0.3 0.6
CFM 90 180