Bryant ERVBBLHU1150, Installation, Start-Up, And Operating Instructions Manual, Page: 4 / 16

VI. CONDENSATE DRAIN
To connect condensate drain, proceed as follows:
1. Insert sleeved grommets into bottom of unit using the
gasket washer and nut (See Fig. 5).
2. Cut two sections of plastic tubing, about 12” long and attach
them to each drain.
3. Join the two short sections of tubing to the “T” connector
and the main tube as shown.
4. Make a loop in the tubing below the “T” connector to create
a trap to prevent sewer gases from entering the ventilation
system (See Fig. 5).
5. Connect unit drain to building’s main drain. Provide slight
slope from unit for run-off.
VII. WALL CONTROL
1. Location
The ERV wall control is unique to this unit. The ERV will not
operate without it. This control senses humidity not temperature. It
must be located in an area where it will continually monitor fresh
air circulating within the home. Install ERV wall control as close
as possible to main system thermostat and follow same guidelines
as installing a thermostat (locate approximately 5 ft. above floor,
mount on an inside partitioning wall, etc.).
2. Wiring
Remove top cover assembly from wall control and pass thermostat
wire through hole located on back of control before attaching to
wall. Connect Y, R, G, and B (yellow, red, green, and black)
between wall control and ERV circuit board following color code
(See Fig. 8 and 9). Replace top cover assembly.
NOTE: ERV wall control and circuit board operate on 12vdc.
3. Operation
The ERV wall control has 3 basic modes of operation, OFF, LOW,
and INTERMITTENT. Be sure that all modes of operation are
fully functional. See Table 1 indicating standard control operation.
OFF — When wall control is OFF, ERV is de-energized and both
LED’s are off.
LOW — This mode ensures continuous air exchange with outside
at all times. If relative humidity level inside of building is higher
than setpoint, then air exchange will occur at low speed. If relative
humidity level inside of building is lower than setpoint, then air
exchange occurs at high speed.
INTERMITTENT — If relative humidity level inside of building
is higher than setpoint, then no air exchange will occur and ERV
shuts off. If relative humidity level inside building is lower than
setpoint, then air exchange occurs at high speed, and shuts down
ERV when humidity level reaches set point. This mode is ideal for
maintaining proper humidity level when continuous mode cannot.
To ensure highest degree of humidity control in cooling season,
intermittent mode should not be used.
4. Humidity Selection
The humidity selector is a built-in humidity controller designed to
properly control humidity level in a house during summer months.
This acts like a limit switch. See Table 2 to select maximum
humidity level. If the house becomes too dry in winter months, put
wall control in INTERMITTENT mode and turn down humidity
selector to provide ventilation less frequently.
5. Latent Control
NOTE:
To ensure highest degree of humidity control in cooling
season, the INTERMITTENT mode should be used. See Table 1
and reference LOW and INTERMITTENT control operation listed
above.
ELECTRICAL CONNECTIONS
I. 115–VAC WIRING
The ERV operates on 115vac. It comes with a power cord attached
to unit and ready to plug into a fused outlet. Unit must be grounded
for proper operation.
All electrical connections must comply with National and Local
Electrical Codes, or other ordinances that might apply.
CAUTION: ELECTRICAL / FIRE HAZARD
Failure to follow this warning could result in property or
unit damage.
Do not use an extension cord as a power source for
operating the ERV.
II. 12–VDC WIRING
The ERV circuit board, wall control, and accessories operate on
12vdc. See section, Wall Control, item Wiring, and Fig. 8 and 9 for
more information.
ACCESSORIES
I. INTERLOCK RELAY
The interlock relay kit, Part No. KVAAC0101VIR is required
when installing ERV into a forced-air heating and cooling system
(See Fig. 10). Mount interlock relay inside of unit below control
box assembly. For additional information, refer to Installation
Instructions supplied with the interlock relay kit.
Fig. 5–Condensate Drain With Loop Trap
A99268
Fig. 6–Flexible Duct Fit-Up
A98382
FLEXIBLE
DUCT
FRESH-AIR
SUPPLY
STALE-AIR
RETURN
DUCTS CONNECTING TO
RETURN-AIR DUCT SYSTEM
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