Build Equinox CERV-001-PARTA Operating and maintenance instructions

INSTALLATION MANUAL
CONDITIONING ENERGY RECOVERY VENTILATOR (CERV)
MODEL CERV-001-PARTA, CERV-001-PARTB
REV 0.36 -01/27/2015

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CERV SYSTEM FOOTPRINT
NAMEPLATE RATINGS

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GENERAL CONSIDERATIONS
DANGER: RISK OF ELECTRIC SHOCK.CAN CAUSE INJURY OR DEATH:DISCONNECT ALL REMOTE
ELECTRIC POWER SUPPLIES BEFORE SERVICING.
1. Installation should be performed by qualified personnel with a thorough understanding
of electrical safety precautions. Units must be properly grounded.
2. Beware of sharp edges when assembling duct connections.
3. Units should be secure and level. If installing on a platform, ensure levelness and
structural stability of the platform.
4. Water drain must be lower than the drain outlet from the CERV-001-PARTA module. If
not, a condensate pump must be used.
5. An inline water trap must be effectively utilized as detailed later to prevent air from
being drawn into the CERV-001-PARTA unit through the drain tubing.
INSTALLATION PROCEDURE
1. Review Ducting section below to determine most applicable ducting scheme.
2. If desired, you may want to place a pan underneath the CERV-001-PARTA module on the
off chance of a condensate water leak (plugged tube, etc.). A washing machine pan is
often a good choice.
3. Fix CERV-001-PARTA and CERV-001-PARTB modules into position and ensure stability.
Units must be level.
4. Determine locations for the blowers to inside and to outside (and if applicable, auxiliary
heater). Blowers should always be drawing air through the CERV, and blowing air to the
supply/exhaust ducting. Mount blowers in position and ensure stability.

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DUCTING THE UNITS TOGETHER
For ducting the PARTA and PARTB units together, rigid (galvanized) duct fittings should
be used. All ducting between the units must be insulated and sealed, especially the
outlet side, since the air will be heated or cooled (depending on the duct) and could
cause condensation on the ducts.

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Due to the flexible nature of the system, there are several ways to duct the CERV for operation. See
the following to determine the most applicable configuration.
DUCTING WITH AN EXISTING MINISPLIT/FURNACE CABINET
DUCTING WITH AN AUXILIARY HEATER ONLY
DUCTING WITH CERV ONLY

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FILTERS
Filters may be installed in line with the system, so that the fresh air is filtered before it enters the
CERV. Additionally, you may wish to filter the return air to remove dust or other particulates from the
air when the CERV is in a recirculation mode.
The filter boxes that are typically supplied with the CERV are the Fantech FB6 (datasheet link here).
The filter boxes use a standard 10” x 20” x 1” filter, allowing you to choose a filter level that suits your
needs.

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INSULATING
In the winter, the unit will be bringing in cold air, passing it through the heat pump, and then
exhausting EVEN COLDER air. In the summer, the CERV will be bringing in hot air, passing through the
heat pump, and exhausting EVEN HOTTER air. It is therefore extremely important that the components
of the system are properly insulated, as to prevent any condensation on the ducting.
PART AAND PART BMODULES
The Part A (control module) and Part B (heat pump module) are internally insulated using a UL
approved R8.0 insulation. The Part A and Part B modules therefore do not need to be insulated (with
the exception of the duct fittings).
DUCTS
All ducts except for the RETURN (from inside) must be insulated. It is recommended to use a
minimum of R6.0 insulation (such as 6” fiberglass ductwork insulation sleeve found at home
improvement stores). In colder climates, it may be necessary to add additional insulation if it appears
that the ducts may be showing signs of sweating.
FILTER BOXES
The Fantech FB6 filter box (in the fresh air supply line) must be insulated. It is recommended to use a
minimum of R6.0 insulation surrounding the entire filter box (be sure to leave a way to replace the
filter). If there are multiple filter boxes stacked together (such as one on top of the other), you must
insulate between the two.
IN-LINE FANS
Both supply and exhaust fans must be insulated. It is recommended to use a minimum of R6.0
insulation surrounding each fan. If there are multiple fans stacked together (such as one on top of the
other), you must insulate between the two with a double layer of insulation. In the winter, for
instance, the supply fan may be blowing 80F air inside the house, while the exhaust fan may be
blowing 30F air back outside. Without insulation between the two fans, therefore, the CERV’s
conditioning capabilities would be severely diminished.

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WATER DRAIN
1. Prime the outside of the PVC drain tube, and then connect your drain to the fitting
with PVC cement.
2. It is imperative to create a water trap in the drain tube. If you do not, you will most
likely hear a gurgling sound as the system runs and water will not drain properly. A
small loop or jog in the drain tubing (as seen below) is often enough.
3. If the drain is below the CERV and condensate is removed by gravity, the tubing may
simply be run to the drain. If the drain is higher (for instance, a wall drain), you must
use a condensate pump to actively remove the drained condensate.
4. If you have an overflow water pan underneath the CERV, such as a washing machine
pan, cut a hole in it and attach a fitting and drain tube to the floor drain/condensate
pump.
ELECTRICAL
1. For further electrical information, see the Appendix at the end of the document.
2. MAKE SURE THE CIRCUIT IS NOT HOT, i.e. breaker switch is off or fuse is out.
3. Run electrical supply (240vAC) to the CERV-001-PARTA module. The power input from
your supply panel connects to the 16 gauge Red and Black wires in the junction box on
the module. Ground the power input with the included green ground screw.
4. Run electrical supply (120vAC) to the CERV-001-PARTB module. The power input from
your supply panel connects to the 16 gauge White and Black wires labeled 120vN and
120vH in the high voltage junction box on the module. Ground the power input with
the included green ground screw.

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5. Run the electrical (120vAC) to the blowers from the CERV-001-PARTB high voltage
junction box. Each blower is controlled individually, so each blower will have a labeled
separate hot (red) and neutral (white) wire in the HV junction box. The supply blower
wires will be labeled BinN and BinH, while the exhaust blower wires will be labeled
BoutN and BoutH. Blowers may share the same ground (green).
6. Run the low voltage wire from PARTA to PARTB (LV control terminals F+ (red) and F-
(black)).Low voltage wiring does not need to be inside conduit, just ensure that it is secure.
See figure below. Use the included Quick Connect terminals for Part A.

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7. IF INSTALLING AN AUXILARY HEATER (otherwise, skip to step 8)
a. Run control wiring from the LV junction box of PARTB to the aux heater (the yellow
and black wires included with the heater). This wire will only carry a low current
24vAC control signal; therefore thermostat wire may be acceptable if the included
wire is not long enough.
b. Set the Warm Air dial, pictured below, to a value of 7 and install the included
temperature sensor in the duct after the auxiliary heater.
c. Follow electrical wiring procedures for installation of supply power to auxiliary
heater.

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8. IF INSTALLING A WIRELESS SWITCH RELAY (otherwise, skip to step 9)
a. Follow the wiring diagram below and match the colors of the wires to the
terminal block labels.
b. Wires may be run through the same stress relief as the PARTA wiring, and the
wireless relay can be secured with a strip of Velcro (not included).
c. A short length of adhesive backed Hook and Loop fastener is included with the
wireless switch relay. This may be used to mount the relay near the junction box.
Ensure that you still have access to the Clear and Learn buttons on the relay.

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9. After all electrical wiring has been completed and all connections have been double
checked, apply power to the unit. If the blowers turn on, everything is working
properly, if not, go back and check all wiring again. When the unit is first started, it will
turn on the inside blower for approximately 10 seconds before starting up the rest of
the system. Use this to ensure that the blowers are correctly wired (i.e. Bin wires go to
the supply blower, Bout wires go to the exhaust blower).
APPENDIX -ELECTRICAL
DANGER: RISK OF ELECTRIC SHOCK.CAN CAUSE INJURY OR DEATH:DISCONNECT ALL REMOTE
ELECTRIC POWER SUPPLIES BEFORE SERVICING.
Electrical Ratings
CERV-001-PARTA
CERV-001-PARTB
Volts AC
240
Volts AC
120
Amps
2.1
Amps
2.5
Ph Ф
1
Ph Ф
1
Hz
60
Hz
60
Minimum Circuit Ampacity
8.75
Minimum Circuit Ampacity
2.5
Max Fuse Size (Amps)
15
Max Fuse Size (Amps)
15
Blower 1 Output Max (Fla)
1.1
Blower 2 Output Max (Fla)
1.1
GENERAL WIRING GUIDELINES
All electrical wiring should be performed as to comply with National Electric Code NFPA
70. Additionally, be aware of any additional city or utility code requirements before
installation. Units must be properly grounded.
System power to CERV-001-PARTA and PARTB must comply with the nameplate
requirements. The CERV-001-PARTA should have its own dedicated circuit.
Never run control wiring and power wiring through the same conduit.
Always use proper gauge stranded copper wire for power connections. Typically, a 15A
circuit will require 14ga, while 20A requires 12ga. Check your local codes for
differences.

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ELECTRICAL CONNECTIONS QUICK REFERENCE GUIDE
CERV-001-PARTA - Conduit Box –High Voltage Connections:
240 H (Black): Connect to 240V POWER SUPPLY black wire.
240 N (Red): Connect to 240V POWER SUPPLY red wire.
Ground Screw: Connect to 240V POWER SUPPLY GROUND wire (green).
CERV-001-PARTA - Conduit Box –Low Voltage Connections (2
quick connect terminals):
LV Terminal (RED –F+): Connect to F+ SCREW TERMINAL of CERV-001-PARTB
LOW VOLTAGE CONDUIT BOX.
LV Terminal (BLACK –F-): Connect to F- SCREW TERMINAL of CERV-001-
PARTB LOW VOLTAGE CONDUIT BOX.
CERV-001-PARTB - High Voltage Conduit Box:
120 H (Black): Connect to 120V POWER SUPPLY HOT wire (black).*
120 N (White): Connect to 120V POWER SUPPLY NEUTRAL wire (white).*
Bin H (Red): Connect to INDOOR SUPPLY BLOWER HOT wire (black).
Bin N (white): Connect to INDOOR SUPPLY BLOWER NEUTRAL wire (white).
Bout H (Red): Connect to OUTDOOR EXHAUST BLOWER HOT wire (black).
Bout N (white): Connect to OUTDOOR EXHAUST BLOWER NEUTRAL wire
(white).
Ground Screw (green): Connect ground wires from 120V POWER SUPPLY,
INDOOR SUPPLY BLOWER, and OUTDOOR EXHAUST BLOWER, and ground with
green ground screw.*
CERV-001-PARTB - Low Voltage Conduit Box:
F+: Connect to CERV-001-PARTA LOW VOLTAGE Quick Connect (RED –F+).
F-: Connect to CERV-001-PARTA LOW VOLTAGE Quick Connect (BLACK –F-).
B: Black wire from wireless relay DLC.
Y: Yellow wire from wireless relay DLC.
R&G: Red and Gray wires from wireless relay DLC.
Aux N: If applicable, connect 24v control wire to auxiliary electric heater
control wire (24V Neutral).
Aux H: If applicable, connect 24v control wire to auxiliary electric heater
control wire (24V Hot).