Solacity Zephyr 12VENT User manual

Zephyr Vent Fan –Made in Canada by Solacity Inc.
www.Solacity.com/zephyr-vent-fan/
Zephyr Vent Fan Installation
Wiring
Many inverters and charge controllers have an auxiliary relay that is programmable to turn a Vent Fan on
or off based on the battery Voltage. These tend to come in two version: Either a constant Voltage (often
12V), and if the current rating is sufficient this can drive a (12V) fan directly. All the Fans use less than 200
mA (0.2 Amp, this is true for the 12, 24, and 48V Vent Fans).
The other version has a dry contact (a regular unpowered relay). The battery Voltage has to be wired to
the switch part of such a relay and the fan should match the battery Voltage. A 12V powered relay can
also be used to drive an additional relay to use a 24V or 48V Vent Fan. An automotive relay is an often-
used option. A 1 Ampere fuse is recommended to protect the wiring.
Plumbing
The 12V and 24V Zephyr
Vent Fans use 2” DWV
(Drain-Wastewater-Vent)
PVC pipe for both intake and
output, the 48V Vent Fan
uses 3” for the output

Zephyr Vent Fan –Made in Canada by Solacity Inc.
www.Solacity.com/zephyr-vent-fan/
Instructions
The Vent Fan must be placed vertically with the label right side up in order for the backdraft damper to
function properly. Place the Vent Fan higher than the top of the battery box and indoors, especially in cold
climates (the damper could otherwise freeze shut due to the moisture in the battery gasses).
Use no more than four 90⁰bends including the one at the exterior terminus facing down. Put a screen on
the outside pipe terminus to keep insects and debris out. If installed in a dusty or construction
environment put a porous foam or paper filter on the battery box inlet. DO NOT GLUE the Vent Fan in
place. Friction fit is adequate. DO NOT drip glue onto the Fan blades.
Use 2” PVC dwv pipe on 12 and 24 volt systems. Use 2” intake and 3” output PVC dwv pipe on 48 volt
systems. Place a 1 amp fuse at the start of the positive circuit wire. Thermostat wire and phone splice/tap
connectors (ULG or UG)) work well to connect the Power Vent. Use a cable tie around the base of the
Power Vent and wires to provide strain relief and create a neat wire job. A controller is usually used in the
circuit to cycle the Fan. Many inverters and charge controllers have built-in functionality to switch a fan
on/off based on battery Voltage. Please refer to the appropriate manual for hook up and programming
instructions. The voltage set points for turning the Fan on and off are above the full State-Of-Charge
voltage of the battery but below the battery gassing voltage. In the case of grid tied systems where the
batteries are kept at float voltage 24 hours/day it may be necessary to run the Fan full time as the
batteries are always gassing. An alternative is to remove the backdraft damper to allow passive venting
and only switch the Fan on when the batteries are above float voltage.
For the inquisitive, please note that the 48 volt Vents Fans are built with two 24 volt fans wired in series.
Set Points for Flooded Lead Acid Batteries
Battery
Voltage
Fan ON
set point
Fan OFF
set point
Hystereris
(some inverters)
12V
13.2 Volt
13.0 Volt
0.2
24V
26.4 Volt
26.1 Volt
0.3
48V
52.8 Volt
52.2 Volt
0.6
LIMITATIONS AND DISCLAIMER.
The Zephyr Vent Fan only moves a small volume of air. It is designed for home systems with typical charging capabilities of
150 DC amps or less. Hydrogen gas creates an explosion risk at concentrations of only 4%. Make sure vent openings are free
and clear including the safety vent hole at the bottom of the Vent Fan. Periodically check to make sure the Vent Fan is
running during charge periods. Keep your batteries and connections clean and tight. Having no control over the use or
installation of this product, we assume no liability connected with its use. The Zephyr Vent Fan itself is warranted for 2 years
if installed in accordance with these instructions.