Build Equinox CERV2 User manual

CERV2 Zone Option Manual
Build Equinox
[email protected]
(773)-492-1893
Rev 1.3 - 11/03/2020
© Build Equinox 2020

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Zone Damper Wiring
There are two ways to physically control the Zone Damper motors –With the CERV’s integrated X0 Auxiliary Output, or with the
optional IO Expansion Board. Both options require 3 conductor wire capable of carrying 24VAC at 0.5A (thermostat wire is
acceptable).
The standard damper motor terminal block is three positions, with the first as a common, while the second and third activate
the damper motor to turn clockwise or counterclockwise when voltage is applied. This may vary if other damper motors, such as
spring return, are used. Rotation of the damper motor can sometimes be confusing when wiring the terminals, so the damper
motor has an integrated switch to reverse the rotation direction. If you apply system power and find that the damper motor is
rotating the wrong way, you can simply toggle the switch with a small flathead screwdriver.
Integrated X0 Auxiliary Output
The terminal block for the X0 Auxiliary Output is located in the bottom section of the CERV2 (see appendix at end of document
for access instructions). Because the X0 is a standard dry contact with Normally Open (1), Common (2), and Normally Closed (3)
terminals, it must be used in conjunction with the 24VAC output terminals (4, 5) as seen above.

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IO Expansion Board, X1-X6 Auxiliary Outputs
In addition to the integrated X0 Auxiliary output, the I/O Expansion Board is capable of directly outputting 24VAC through its
terminals without requiring connection to an external 24VAC source. NOTE: for this configuration, you must move the slide-
switch above the terminal block towards the 24VAC OUTPUT label. LED indicators on the I/O Expansion Board will light up above
either the NO or NC terminals, to indicate which is active. Up to six zone dampers may be connected to the I/O Expansion
Board. See the I/O Expansion Board manual for more information on installing and configuring the expansion board.

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Touchscreen Zone Configuration
The first step in setting up your zone damper system is to define Zone areas. The following examples describe how to access the
Zone Configuration screen, as well as how to create a new zone, rename a zone, and delete a zone.
When a new zone is created, the first selection gives you the option of choosing whether the zone is an Exhaust Zone, Supply
Zone, or Active Close zone. Descriptions of the zone types are as follows:
1. Exhaust Zone: Exhausts stale air from bathroom, kitchen, or other area with stale air. When this zone is activated
(through a paired wireless ventilation switch, auxiliary input, etc.), all other zones configured as Exhaust Zones will close
down ensure maximum flow to this zone. Zones configured as Supply or Active Close will not be influenced by activity in
Exhaust Zones.
2. Supply Zone: Supplies fresh air to living spaces. When this zone is activated (through a paired wireless ventilation
switch, auxiliary input, etc.), all other zones configured as Supply Zones will close down ensure maximum flow to this
zone. Zones configured as Exhaust or Active Close will not be influenced by activity in Exhaust Zones.
3. Active Close Zone: For use when only one zone damper is used to control two spaces. An example of this zone
configuration can be seen in the Appendix under Single Damper, Single Zone (Active Close Configuration).

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For examples of each zone type, please see the Appendix at the end of this document.
Note: when deleting a zone, any auxiliary inputs or wireless devices linked to this zone will revert to controlling the CERV as a
whole (i.e. triggering a ventilation switch would ventilate the whole home instead of the previous zone). Any auxiliary outputs
configured as Zone Dampers linked to this zone will be unset.

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The next step after creating the Zone, is to set up an auxiliary output which will be connected to a zone damper.

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After an auxiliary output has been set to actuate a damper motor, you may configure inputs to trigger one of your configured
zones. The steps below walk through setup of wired auxiliary inputs (I0, or I1-I3 on the IO Expansion Board), as well as wireless
options such as the wireless ventilation switch or active circuit transmitter. Note: If no zone selection is made, the input will
trigger the CERV as a whole to ventilate. Additionally, multiple zones may be linked to the same input if desired

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