Bryant ERVBBLHU1150, ERVBBLHU1200 Installation, Start-up, And Operating Instructions Manual
Installation, Start-Up, and
Operating Instructions
ERVBBLHU
ENERGY RECOVERY VENTILATOR
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................1
INSTALLATION CONSIDERATIONS .......................................1
Inspect Equipment ....................................................................1
Select Location..........................................................................2
COMPONENT DESCRIPTION ....................................................2
INSTALLATION ...........................................................................3
Mount Unit................................................................................3
Independent System Application..............................................3
Forced-Air Application.............................................................3
Connect Ducts to ERV .............................................................3
Locate and Install Exterior Hoods ...........................................3
Condensate Drain......................................................................4
Wall Control..............................................................................4
ELECTRICAL CONNECTIONS ..................................................4
115–vac Wiring.........................................................................4
12–vdc Wiring ..........................................................................4
ACCESSORIES..............................................................................4
Interlock Relay..........................................................................4
20 Minute Timer.......................................................................5
60 Minute Adjustable Timer ....................................................5
BALANCING ERV .......................................................................5
Balancing Dampers...................................................................6
Flow Collar ...............................................................................6
CONTROL BOARD OPERATION ..............................................8
Board Function..........................................................................8
Defrost.......................................................................................8
OFF and INTERMITTENT/OFF Mode...................................8
High-Speed Air Exchange ........................................................8
Low-Speed Air Exchange.........................................................9
CARE AND MAINTENANCE.....................................................9
Door.........................................................................................10
Filter ........................................................................................10
Blower Motor and Wheel.......................................................10
Cleaning Core .........................................................................10
TROUBLESHOOTING ...............................................................10
Wall Control............................................................................10
Control Board..........................................................................10
Blower Motor..........................................................................10
Blower Speed Selection..........................................................11
SAFETY CONSIDERATIONS
Installation and servicing of this heating equipment can be
hazardous due to mechanical and electrical components. Only
trained and qualified personnel should install, repair, or service
heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on this
equipment, observe precautions in the literature, on tags, and on
labels attached to or shipped with the unit and other safety
precautions that may apply.
Cancels: II ERV-64–2 II ERV-64–3
4–05
A00092
Fig. 1–ERVBBLHU Energy Recovery Ventilator
Follow all safety codes. Installation must be in compliance with
local and national building codes. Wear safety glasses and work
gloves. Have a fire extinguisher available during start-up and
adjustment procedures and service calls.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, or CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies a hazard that could
result in personal injury or death. CAUTION is used to identify
unsafe practices which would result in personal injury or product
or property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability or operation.
INTRODUCTION
The ERVBBLHU Energy Recovery Ventilator (ERV) is used to
exchange indoor stale air with outside fresh air. The ERV unit is
equipped with a special energy recovery core which transfers both
sensible and latent heat with the fresh incoming air. The cross-flow
design core allows entering and leaving air streams to transfer heat
energy without mixing (See Fig. 14).
The model ERVBBLHU is available in 2 sizes with airflow ranges
of 64–152 CFM, and 117–214 CFM. The design of this unit is
horizontal. Special attention should be given to duct application,
balancing the ERV, and locating unit for easy access and routine
maintenance.
INSTALLATION CONSIDERATIONS
I. INSPECT EQUIPMENT
Move carton to final installation location. Remove ERVBBLHU
from carton taking care not to damage unit. Remove all packaging
and inspect unit for damage. Remove parts bag from inside unit.
File claim with shipping company if shipment is damaged or
incomplete. Check to make sure ERV unit matches Fig. 2.
.
—1—
3
2
⁄16"
(56.2)
3
4
⁄4"
(120.6)
4 PLCS
20"
(508.0)
4
1"
(25.4)
2 PLCS
1
D
2
3
5
2
⁄16"
(58.7)
1
18
⁄8"
(460.4)
16
(428.6)
C
G
7
5
⁄8" DIA
(149.2)
4 PLCS
7
⁄8"
15"
(381.0)
F
B
1
30
⁄4"
(768.3)
E
A
NOTES:
1. FRESH AIR FROM OUTSIDE TO ERV
2. FRESH AIR FROM ERV TO HOUSE
3. STALE AIR FROM HOUSE TO ERV
4. STALE AIR FROM ERV TO OUTSIDE
MODEL NO. A B C D E F G
in. mm. in. mm. in. mm. in. mm. in. mm. in. mm. in. mm.
ERVBBLHU1150 15-1/8 384.2 4-1/16 104 5-5/8 143.3 14-1/2 368.9 10-3/8 288.9 4-3/8 111.3 7-3/4 196.9
ERVBBLHU1200 19 483 5-13/16 147.7 5-1/16 128.6 14-1/2 368.9 11-3/16 283.9 4-3/8 111.3 10-1/16 255.6
Fig. 2–Dimensional Drawing ERVBBLHU
II. SELECT LOCATION
The ERV should be located in a conditioned space and in close
proximity to a fused power source. It should be easily accessible
for routine maintenance.
3
6
5
11
2
If ERV is installed independent of a forced-air system, unit should
be located near the center of the air distribution system. If ERV is
installed in conjunction with a forced-air system, unit should be
located next (or close to) the indoor equipment.
1
10
COMPONENT DESCRIPTION
The following lists components of the ERVBBLHU (See Fig. 3).
8
4
7
9
1. Stale air return from building connected to return-air duct
system.
2. Fresh-air intake connected to outdoor-air inlet hood.
Fig. 3–ERVBBLHU Cross-Flow
3. Exhaust-air connected to outdoor-air exhaust hood.
4. Mechanical filters trap dust contained in the air.
5. Energy recovery core is a cross-flow type. It transfers
sensible and latent energy between the 2 airstreams.
6. Blowers bring in fresh-air from outside and exhaust stale-air
to outside.
9. Terminal connector block for wiring wall and timer controls.
10. Electrical cord connects to standard 115–v outlet.
11. Damper motor.
7. Electronic control circuit board ensures proper operation of
unit.
8. Fresh-air supply connected to return-air duct system.
A00093
A00113
—2—
Maximum length of duct for the system should be designed
according to the highest speed of the unit. Refer to specifications
listed in unit Product Data Sheet for ventilation capacities.
III. FORCED-AIR APPLICATION
Most ERV applications will be installed in conjunction with new
or existing forced-air systems. To operate properly, the fresh-air
supply and stale-air return from ERV connect directly to return-air
duct system. This is how the ERV distributes fresh air and removes
stale air from inside of the building (See Fig. 7). For these
installations, furnace or fan coil blower must be interlocked and
operate continuously whenever ERV is energized.
→
Interlock relay kit Part No. KVAAC0101VIR is available and
designed to interlock ERV with indoor equipment blower. When
ERV is energized, R and G circuit inside of furnace or fan coil will
energize. See Fig. 10 and interlock relay kit for additional
information and Installation Instructions.
NOTE: The fresh air from ERV is introduced into return-air duct
at a point no less than 6 ft upstream of furnace or fan coil. This
connection should be direct (See Fig. 7). This is to allow incoming
fresh-air to mix before entering indoor equipment.
IV. CONNECT DUCTS TO ERV
A92269
Fig. 4–Chain Spring Installation
INSTALLATION
CAUTION: UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced life of
this unit.
Do not install ERV in a corrosive or contaminated
atmosphere.
I. MOUNT UNIT
The ERV can be suspended from floor joists or rafters using chains
and 4 springs. Attach a metal hanging bracket to all 4 sides of the
cabinet (See Fig. 4). The unit may be installed on a shelf, if an
isolation pad is provided to dampen vibration. Unit should always
be installed as level as possible.
II. INDEPENDENT SYSTEM APPLICATION
In the absence of a forced-air system and a typical duct system
layout, the ERV can be applied as an independent stand alone unit.
To ensure comfort, this type of application involves running both
fresh-air, and return-air registers (or stale-air pick-up registers)
throughout the home.
CAUTION: CARBON MONOXIDE POISONING
HAZARD
Failure to follow this warning could result in personal
injury or death.
Do not install return-air registers (or stale-air pickup
registers) in same room as gas furnace or water heater
Fresh-air registers are normally located in bedrooms, dining
rooms, living rooms, and basements. It is recommended that
registers be placed 6 to 12 in. from the ceiling on an interior wall
and airflow directed towards ceiling. If registers are floor installed,
airflow should be directed toward the wall.
Return air (or stale-air pickup registers) are normally located to
draw from kitchen, bathroom, basement, or other rooms where
stale-air can exist.
Proper size and type of registers must be used to minimize pressure
drop. The velocity of airflow through register should not be above
400 feet per minute.
CAUTION: PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in minor
property damage from sweating duct or loss of unit
efficiency and capacity.
ERV should be installed in a conditioned space with
insulated flex duct for supply and exhaust air to the
outdoor ambient.
Insulated flexible duct is required on both fresh-air inlet and
exhaust-air outlet ducts connecting to exterior wall. When using
insulated flexible duct, the vapor barrier of the flexible ducts must
be taped very tight to prevent condensation problems. To reduce
pressure drop, stretch the flex duct and support it in a proper
manner to avoid reduced airflow.
When connecting the ERV to a return-air duct system, insulated
flexible duct can be used. However, when metal or rigid ducts are
applied use approximately 18–in. of flexible duct at ERV ports for
fresh-air supply, and stale-air return (See Fig. 6). This can act as a
silencer when connecting ducts to return-air duct system. This
should eliminate transmission of noise or vibration from unit to
main duct system. In addition, there are four 30–in. duct ties
provided to help fasten flexible duct to port on ERV.
V. LOCATE AND INSTALL EXTERIOR HOODS
IMPORTANT: To prevent condensation problems, insulated
flexible ducts are required on both fresh-air inlet and exhaust-air
outlet ducts connecting between ERV and exterior wall.
Fresh-air intake and stale-air exhaust must be separated by at least
6 ft. Fresh-air intake must be positioned at least 10ft. from nearest
dryer vent, furnace exhaust, driveway, gas meter, or oil fill pipe.
Fresh-air intake must be positioned as far as possible from garbage
containers and potential chemical fumes. When possible, it is
advised to locate the intake and exhaust hoods on same side of
house or building. The intake and exhaust hoods should never be
located on interior corners or in dead air pockets. (See Fig. 7) Both
intake and exhaust hoods must be 18 in. from ground and at least
12 in. above anticipated snow level.
After selecting proper hood locations, make appropriate size hole
through exterior wall, pass flexible duct through hole and insert
hood tube into duct. Tape duct vapor barrier tightly around hood
tube and insert assembly back into wall and fasten securely.
—3—
A99268
Fig. 5–Condensate Drain With Loop Trap
FLEXIBLE
DUCT
FRESH-AIR
SUPPLY
DUCTS CONNECTING TO
RETURN-AIR DUCT SYSTEM
STALE-AIR
RETURN
A98382
Fig. 6–Flexible Duct Fit-Up
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.
—4—
The purpose of the interlock relay kit is to energize indoor system
equipment (furnace or fan coil) blower whenever ERV is calling.
If ERV is energized, and indoor system equipment is not, interlock
relay will energize and make R and G at indoor equipment. This
will insure fresh air distribution throughout the building via the
central duct system.
II. 20 MINUTE TIMER
A push button timer can be used to override the wall control and
put ERV into high speed for 20 minutes. Connect switches in
parallel and connect leads to ERV terminals I, OC, and OL. (See
Fig. 10) Push button locations are ideal in special activity areas,
such as bathrooms, or kitchens, where high-speed exhaust operation is needed for a short period of time.
NOTE: The 20 minute timer will not function properly unless
ERV wall control is applied and working correctly. Timing
function is internal to electronic circuit board. It is activated by a
momentary contact between OC and OL. The I connection is to
illuminate the push button. The maximum number of push button
timers that can be applied is 5.
III. 60 MINUTE ADJUSTABLE TIMER
A 60 minute adjustable timer can also be used to override wall
control and put ERV into high-speed operation for a select amount
of time. Connect timer in parallel with push button timers, or to
ERV terminals OC and OL (See Fig. 11).
The 60 minute timer will provide a minimum of 10 minutes, and
a maximum of 60 minutes of ventilation at high speed.
BALANCING ERV
Balancing intake and exhaust airflow is very important for proper
system operation and optimum performance when applying an
ERV. Unit balancing prevents a positive and/or negative pressure
within a home. Balancing the ERV is done by applying temporary
flow collars and adjusting the balancing dampers to the fresh air
intake and stale air exhaust ducts (See Fig. 12). Airflow is
temporarily determined by connecting a magnehelic gage to the
temporary flow collar (See Fig. 13). Both flow collars and
magnehelic gage are included in the accessory start-up balancing
kit.
6′
FURNACE
INLET HOOD
REAR
18″MIN
INSULATED DUCT CONNECTING
ERV
6′
EXHAUST HOOD
FRESH AIR & EXHAUST TO
OUTSIDE
NOTE: Supply & exhaust ducts have
internal balancing dampers
that must be adjusted.
18″
GROUND LEVEL
A00111
Fig. 7–Exhaust Ventilation
—5—
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