consideration must be given to how this system
will operate if connected to any other piece of mechanical equipment, i.e. a forced air furnace
or air handler, operating at a higher static. After installation, the compatibility of the two
pieces of equipment should be confirmed by measuring the airflows of the Heat Recovery or
Energy Recovery Ventilators.
It is always important to assess how the operation of any HRV/ERV may interact with vented
combustion equipment (i.e. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.).
NEVER -
install a ventilator in a situation where its normal operation, lack of operation or
partial failure may result in the backdrafting or improper functioning of vented combustion
equipment!!!
SH, VH & SE Series
Heat & Energy Recovery Ventilators 2
TABLE OF CONTENTS
TECHNICAL DATA
SH704
3
VH704
5
SE704
7
INSTALLATION
9
Mounting the Unit
9
Location & Ducting
10
Examples
12
Air Flow Balancing
16
MAINTENANCE
17
TROUBLESHOOTING
18
ELECTRICAL CONNECTIONS
19
The Best
Limited Warranty
in the Business
The heat recovery aluminum core has a
limited lifetime warranty and the enthalpy
energy recovery core has a 5 year limited
warranty.
The motors found in all Fantech HRV/ERVs
require no lubrication, and are factory
balanced to prevent vibration and promote
silent operation.
The limited warranty covers normal use.
It does not apply to any defects,
malfunctions or failures as a result of
improper installation, abuse, mishandling,
misapplication, fortuitous occurrence or
any other circumstances outside
Fantechs control.
Inappropriate installation or
maintenance may result in the
cancellation of the warranty.
Any unauthorized work will result in
the cancellation of the warranty.
Fantech is not responsible for any
incidental or consequential damages
incurred in the use of the ventilation
system.
Fantech is not responsible for providing
an authorized service centre near the
purchaser or in the general area.
Fantech reserves the right to supply
refurbished parts as replacements.
Transportation, removal and installation
fees are the responsibility of the purchaser.
The purchaser is responsible to adhering
to all codes in effect in his area.
The warranty is limited to 5 years on
parts and 7 years on the motor from the
date of purchase, including parts replaced
during this time period. If there is no
proof of purchase available, the date
associated with the serial number will be
used for the beginning of the warranty
period.
* This warranty is the exclusive and only
warranty in effect relative to the ventilation
system and all other warranties either
expressed or implied are invalid.
Sizing (Example) for minimum airflow normally required.
HRV/ERV units are typically sized to ventilate at 0.35 air changes per hour. To calculate, sim-
ply take the square footage of the space and multiply by the height of the ceiling to get cubic
volume. Then, divide by 60 and multiply by 0.35.
Example:
Total SQFT
1100
Height of ceiling
x 8
Cubic volume
8800
/ 60
147
x 0.35
Airflow required (CFM)
51 cfm total
* Always consult your local code for sizing requirements in your area.
* If additional exhaust capacity is required, installation of a fantech bath kit in main bath area
is recommended.
***Illustrations &
images in this
manual may not be
exactly like unit
purchase, these
illustrations &
images are for
examples only.***
ASHRAE Standard 62.2 - 2004
Sizing (Example) for minimum airflow normally required.
Ventilation Air Requirements, cfm
Ventilation Air requirements, L/s 3
SH704
Compact HRV with easy-mount wall bracket. Brings a con-
tinuous supply of fresh air into a home while exhausting an
equal amount of contaminated air. HRVs use what is called
a sensible heat recovery core. This special core transfers
heat from the exhaust air stream to the incoming air
stream. Fresh incoming air is tempered by the heat that is
transferred from the outgoing air to save on energy costs.
The SH704 is equipped with automatic defrost mechanisms
so even if you live in the coldest climates you can use your
HRV all year long.
FEATURES
Super Compact Size
Includes Easy-Mount Wall Bracket
Aluminum Heat Recovery Core
4 (100mm) Duct Connections
No Balancing Required
Easy Access Service Door
3 (914mm) Plug-in Power Cord
Automatic Exhaust Defrost Allows Units
to Always Stay in Ventilation Mode
Only 25 lbs (11 kg)
Electrostatic Filters (washable)
Easy Core Guide Channels For Removing Core
Single Speed Ventilation
ACCESSORIES
FDT 7

7 Day Digital Programmable Timer
COM 4P

4 Weather Hoods
(1 supply & 1 exhaust)
FEL 4

4 90 Elbow
CG 4

4 Adjustable Grille
SPECIFICATIONS
CASE 24 gauge galvanized steel. Baked powder coated paint,
antique white. Cabinet fully insulated with 1" (25 mm)
aluminum foil-face high density polystyrene foam to prevent
condensation and meet the requirements of the UL 94HF.
MOTORS Two (2) German-manufactured, factory-balanced
ebm motors with backward curved blades. Motors come
with permanently lubricated sealed ball bearings guarantee
long life and maintenance-free operation. Seven (7) year
warranty. Steep fan curves requires no balancing of airflows.
CORE Aluminum heat recovery core configured for efficient
cross-flow ventilation. Core is 8.5 x 8.5 (216 x 216mm)
with a 8 (203mm) depth. Cores are manufactured by
Fantech to withstand extreme temperature variations.
FILTERS Two (2) Washable Electrostatic Panel Type Air Filters,
8.5 (216mm) x 8 (203mm) x 0.125 (3mm).
CONTROLS Unit is designed to operate continuously on a
single speed. See FDT 7 under accessories or contact Tech
Support for possible intermittent, line-voltage options.
DEFROST The automatic defrost cycle consists of a fan
shutdown. When the supply air stream temperature goes
below 23°F (-5°C), the supply motor shuts down while the
exhaust motor continues to ventilate. Ambient air is passed
through the unit for a period of 3 or 5 minutes. (see chart
below) The supply motor will then re-start and run at the
preset speed. This fan shutdown defrost cycle continues
until the supply air stream rises above 23°F (-5°C).
SERVICEABILITY Core, filters, motors and drain pan can be
easily accessed through latched door. Core conveniently
slides out on our new easy glide core guides. 10 (250mm)
of clearance is recommended for removal of core.
DUCT CONNECTION 4 (100mm) steel duct connections with
rubber gasket for easy sealing.
DRAIN 1/2 (13mm) OD (outside diameter) drain spout
(provided), and the entire bottom of unit covered by pan.
WARRANTY Limited lifetime on aluminum core, 7 years on
motors, and 5 years on parts.
Heat Recovery Ventilator
S = Side discharge
H = Heat recovery
704 = 70cfm, 4 port design
Temperature range
Run/Defrost cycle
F (C)
(minutes)
23 (-5) to 14 (-10)
40 / 3
14 (-10) to 5 (-15)
30 / 5
5 (-15) & lower
20 / 5
Distributed by:
Fantech, reserves the right to modify, at any time and without notice, any or all of its products fea-
tures, designs, components and specifications to maintain their technological leadership position. 4
United States
1712 Northgate Blvd.,
Sarasota, FL. 34234
(T) 1.800.747.1762
(F) 1.800.487.9915
(T) 1.941.309.6000
(F) 1.941.309.6099
www.fantech.net
info@fantech.net
Canada
50 Kanalflakt Way,
Bouctouche, NB E4S 3M5
(T) 1.800.565.3548
(F) 1.877.747.8116
(T) 1.506.743.9500
(F) 1.506.743.9600
www.fantech.ca
info@fantech.ca
Article #: 412120
Rev Date: 120805
Dimensions & Airflow
- All units feature three foot plug-in power cord with 3-prong plug.
Pa
in wg
L/s
cfm
L/s
cfm
L/s
cfm
25
0.1
45
96
47
99
49
104
50
0.2
40
85
41
88
41
88
75
0.3
32
67
33
69
34
72
100
0.4
26
56
27
58
28
58
125
0.5
20
42
20
43
20
43
EXT. STATIC
PRESSURE
NET SUPPLY
AIR FLOW
GROSS AIR FLOW
SUPPLY EXHAUST
C
F
L/s
cfm
Heating
0
32
26
55
36
57
67 0
32
32
68
40
55
63 0
32
39
83
40
54
60 -25
-13
34
72
35
53
66 SUPPLY
TEMPERATURE
NET
AIRFLOW
Ventilation Performance
Energy Performance
POWER
CONSUMED
WATTS
SENSIBLE
RECOVERY
EFFICIENCY
APPARENT
SENSIBLE
EFFECTIVENESS
LATENT
RECOVERY/MOISTURE
TRANSFER
Submitted by:
Date:
Qty:
Model #:
Comments:
Project #:
Location:
Architect:
Engineer:
Contractor:
0
0.1
0.2
0.3
0.4
0.5
0.6
0
25
50
75
100
125
150
cfm (l/s = n x 0.47)
in w.g. (Pa = n x 248)
Net Supply
Net Exhaust
Specifications and Ratings
Model: SH704
Total assembled weight: 25 lbs (11kg)
Cabinet: 24 ga. steel w/powder coat finish
Motors: ebm motors w/backward curved blades
Filters: 2 washable electrostatic filters
8.5 (216mm) x 8 (205mm) x 0.125 (3mm)
Insulated with 1" (25 mm) aluminum foil-face
high density polystyrene foam to prevent con-
densation and meet the requirements of the
UL 94HF.
Core: Aluminum
8.5 (216mm) x 8.5 (216mm) x 8 (205mm)
Supply & exhaust ducts: 4 (100mm)
Mounting: Wall bracket included
Electrical requirements:
Volts
Frequency Amps
Watts
115V
60Hz
0.36A
40W
3' plug-in power cord w/ 3-prong plug
Contacts
Continuous ventilation mode of supply and exhaust airstreams
10 (254mm) of clearance is recommended for removal of core 5
VH704
Compact top port design HRV with easy-mount wall bracket.
Brings a continuous supply of fresh air into a home while
exhausting an equal amount of contaminated air. HRVs use
what is called a sensible heat recovery core. This special
core transfers heat from the exhaust air stream to the
incoming air stream. Fresh incoming air is tempered by the
heat that is transferred from the outgoing air to save on
energy costs. The VH704 is equipped with automatic defrost
mech