Back
Global site
VHR 704 HRV
Item #: 40392
Airflow up to 57 cfm @ 0.4" PS serves 1 to 3 bedroom homes
Top port design fits in tight spaces
Three speed ventilation control
Compatible with Fantech's low-voltage controls
Application
As Fantech's most compact, full-featured HRV, the VHR 704 unit brings a continuous supply of fresh air into a home while exhausting an equal amount of contaminated air. During winter, fresh incoming air is tempered by the heat that is transferred from the outgoing air so you save on energy costs, while during summer, the incoming air is pre-cooled if the house is equipped with an air cooling system. The VHR 704 is equipped with automatic defrost mechanisms so you can use your HRV all year long.
Defrost Cycle
A preset defrost sequence is activated at an outdoor air temperature of 23°F and lower. During the defrost sequence, the supply blower shuts down & the exhaust blower switches to high speed to maximize the effectiveness of the defrost strategy. The unit then returns to normal operation, and continues the cycle.
| Product | ||
|---|---|---|
| Voltage (nominal) | 120 | V |
| Frequency | 60 | Hz |
| Phases | 1~ | |
| Input power | 48 | W |
| Input current | 0.4 | A |
| Air flow | 27 | L/s |
| Nominal max static pressure (in. w.g.) | 100 | Pa |
| Certificate | CSA, HVI |
| Exchanger | ||
|---|---|---|
| Heat exchanger | Heat recovery |
| Dimensions and weights | ||
|---|---|---|
| Weight | 35 | lb |
| Used for | ||
|---|---|---|
| Installation type | Vertical |
| Heating | Supply temperature | Net airflow | Consumed power | Sensible recovery efficiency | Apparent sensible effectiveness | Latente recovery / moisture transfer |
°F (°C) |
cfm (L/s) |
W |
% |
% |
- |
|
32 (0) |
42 (20) |
36 |
61 |
70 |
0.01 |
|
32 (0) |
64 (30) |
50 |
60 |
69 |
0.00 |
|
-13 (-25) |
46 (22) |
36 |
55 |
72 |
0.00 |
| A | B | C | D | E | Duct Size |
21 1/2 (546) |
10 3/16 (259) |
15 2/3 (398) |
17 1/4 (438) |
21 1/2 (546) |
4 (100) |
Dimensional information is in inches (mm). |
|||||
Fans
Two (2) factory-balanced fans with backward curved blades. Motors come with permanently lubricated, sealed ball-bearings to guarantee long life and maintenance-free operation.
Heat Recovery Core
Aluminum heat recovery core covered by a limited lifetime warranty. Core dimensions are 8.5” x 8.5” (216 x 216 mm) with a 8” (203 mm) depth. Our heat exchangers are designed and manufactured to withstand extreme temperature variations.
Frost Control
A preset frost control sequence is activated at an outdoor air temperature of 23°F (-5°C) and lower. During the defrost sequence, the supply blower shuts down & the exhaust blower switches into high speed to maximize the effectiveness of the defrost strategy. The unit then returns to normal operation, and continues cycle.
Serviceability
Core, filters, fans, drain pan and electrical panel can be accessed easily from the access panel. Core conveniently slides out with only 10” (250 mm) clearance.
Duct Connections
4" (100mm) steel duct connections with rubber gasket for easy sealing.
Case
24 gauge galvanized steel. Baked power-coated paint for a superior adhesion and resistance.
Insulation
Cabinet is fully insulated with 1” (25 mm) high density expanded polystyrene.
Filters
Two (2) washable electrostatic panel type air filters 8.5” (216mm) x 8” (205 mm) x 0.125” (3mm).
Controls
External three (3) position (Reduced/Stand By/Normal) rocker switch that will offer continuous ventilation. Fantech offers a variety of external controls. (see accessories)
Controls
External three (3) position (Low/Stand By/Medium) rocker switch that will offer continuous ventilation. The product comes with ECO-Touch wall control panel.
Warranty
Limited lifetime on aluminum core, 7 year on motors, and 5 year on parts.
Requirements and standards
Complies with the UL 1812 requirements regulating the construction and installation of Heat Recovery Ventilators
Complies with the CSA C22.2 no. 113 Standard applicable to ventilators
Complies with the CSA F326 requirements regulating the installation of Heat Recovery Ventilators
Technical data was obtained from published results of test relating to CSA C439 Standards
HVI certified
