Fantech SE704 Installation, operation and maintenance manual - Vh704
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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
mechanisms so even if you live in the coldest climates you
can use your HRV all year long.
FEATURES
• Super Compact Size
• Top Port Design Fits in Tight Spaces
• 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 26 lbs (12 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 to
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 216 mm)
with a 8˝ (205 mm) 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, entire bottom of unit covered by pan.
WARRANTY Limited lifetime on aluminum core, 7 year on
motors, and 5 year on parts.
Heat Recovery Ventilator
V = Vertical 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
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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.