Bryant HRVBBLHU Operating instructions

installation, start-up,
and operating instructions
HRVBBLHU,
HRVBBSVU,
HRVBBLVU
HEAT RECOVERY
VENTILATOR
Cancels:
New
II HRV-71-2
5-00
NOTE: Read the entire instruction manual before starting the
installation.
Index
Page
SAFETY CONSIDERATIONS .....................................................2
INTRODUCTION ..........................................................................2
LOCATION....................................................................................2
Inspect Equipment ....................................................................2
Select Location..........................................................................2
UNIT INSTALLATION.............................................................2-3
Mount Unit................................................................................2
Independent System Application..............................................2
Forced-Air Application.............................................................3
Connect Ducts to HRV.............................................................3
Condensate Drain......................................................................3
Locate and Install Exterior Hoods ........................................3-4
COMPONENT DESCRIPTION ....................................................5
WALL CONTROL .....................................................................4-6
Location .................................................................................6-7
Basic Control Operation ...........................................................6
Standard Control Operation......................................................6
Automatic Control Operation ...................................................6
Wiring........................................................................................7
Humidity Selector .....................................................................7
ELECTRICAL CONNECTIONS...............................................7-8
115-vac Wiring .........................................................................7
12-vdc Wiring ...........................................................................8
ACCESSORIES ..........................................................................8-9
Interlock Relay..........................................................................8
20 Minute Timer.......................................................................8
60 Minute Adjustable Timer ....................................................8
BALANCING HRV................................................................10-11
Balancing Dampers.................................................................10
Flow Collars ......................................................................10-11
VENTILATION EVALUATION...........................................12-13
Method 1 .................................................................................13
Method 2 .................................................................................13
CONTROL BOARD OPERATION ............................................13
Board Function........................................................................13
Defrost.....................................................................................13
Off and Intermittent/Off Mode...............................................13
High-Speed Air Exchange ......................................................13
Low-Speed Air Exchange.......................................................13
CARE AND MAINTENANCE..............................................13-14
Door.........................................................................................13
Filter ........................................................................................14
Blower Motor and Wheel.......................................................14
Cleaning the Core ...................................................................14
TROUBLESHOOTING ..........................................................14-17
Wall Control............................................................................14
Control Board..........................................................................14
Blower Motor..........................................................................14
Blower Speed Selection..........................................................14
Defrost................................................................................14-16
Control Module Jumpers ........................................................16
Error Signaling ..................................................................16-17
WIRING DIAGRAMS ...........................................................18-19
DIMENSIONAL DRAWINGS ..............................................20-22
A99271
Fig. 1—HRVBBLHU Conventional Unit
A92268
Fig. 2—HRVBBSVU Compact Unit
A92377
Fig. 3—HRVBBLVU High Efficiency Unit
—1—
SAFETY CONSIDERATIONS
Installation and servicing of this equipment can be hazardous due
to mechanical and electrical components. Only trained and qualified personnel should install, repair, or service this equipment.
UNIT INSTALLATION
CAUTION: Do not install HRV in a corrosive or contaminated atmosphere.
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.
I.
MOUNT UNIT
The HRV can be suspended from floor joists using chains and 4
springs. Attach metal hanging bracket to all 4 sides of cabinet. (See
Fig. 4.) Unit should always be installed as level as possible.
Follow all safety codes. Installation must be in compliance with
local and national building codes. Wear safety glasses and work
gloves. Have 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, and 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 which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage.
INTRODUCTION
The Heat Recovery Ventilator (HRV) is used to exchange indoor
stale air with outside fresh air. The HRV unit is equipped with a
special heat recovery core which transfers sensible heat between
the fresh incoming air and stale exhaust air.
It is recommended, but not required to locate the HRV in a
conditioned space. Special attention should be given to condensate
drain, duct application, balancing HRV, and locating unit for easy
access and routine maintenance.
The cross-flow design core allows entering and leaving air streams
to transfer heat energy without mixing. (See Fig. 15, and 18
through 25.)
A92269
Fig. 4—Chain Spring Installation
II. INDEPENDENT SYSTEM APPLICATION
In the absence of a forced-air system and a typical duct system
layout, the HRV can be applied as an independent or stand alone
unit. To ensure comfort, this type of application involves running
both fresh-air, and return-air registers (or stale-air pickup registers)
throughout the home.
CAUTION: Do not install return-air registers (or staleair pickup registers) in same room as gas furnace or water
heater.
LOCATION
I. INSPECT EQUIPMENT
Move carton to final installation location. Remove HRV 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 HRV unit matches Fig. 1 through 3 and
7 through 9.
Fresh-air registers are normally located in bedrooms, dining room,
living room, and basement. It is recommended that registers be
placed 6 to 12 in. from the ceiling on an interior wall and airflow
directed toward 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 ft/minute.
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 Digest for ventilation capacities.
II. SELECT LOCATION
The HRV should be located in a conditioned space and in close
proximity to a fused power source. It should be easily accessible
for routine maintenance.
If HRV is installed independent of a forced-air system, unit should
be located near the center of the air distribution system. If HRV is
installed in conjunction with a forced-air system, unit should be
located next to (or close to) the indoor equipment.
—2—
III.
FORCED-AIR APPLICATION
VI.
Fresh-air intake and stale-air exhaust must be separated by at least
6 ft. Fresh-air intake must be positioned at least 10 ft 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.
NOTE: The fresh air from HRV 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.
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 HRV and exterior wall.
Most HRV applications will be installed in conjunction with new
or existing forced-air system. To operate properly, the fresh-air
supply and stale-air return from HRV connect directly to return-air
duct system. This is how the HRV distributes fresh air and
removes stale air from inside of building. (See Fig. 7.) For these
installations, furnace or fan coil blower must be interlocked and
operate continuously whenever HRV is energized.
Interlock relay kit Part No. KVAAC0101FIR is available and
designed to interlock HRV with indoor equipment blower. When
HRV is energized, R and G circuit inside of furnace or fan coil will
energize. See Fig. 13 and interlock relay kit for additional
information and Installation Instructions.
CONNECT DUCTS TO HRV
FLEXIBLE
DUCT
CAUTION: If HRV duct work is installed in an unconditioned space, insulated flexible duct is required.
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 HRV 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 HRV ports for
fresh-air supply, and stale-air return. When using metal duct from
fresh-air supply to system duct work, the metal duct should be
insulated. (See Fig. 5.) 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.
NOTE: Balancing dampers should be installed in stale air exhaust
and fresh air intake ducts before connecting to the HRVBBSVU
and the HRVBBLVU units. The balancing dampers are provided
in the HRVBBLHU units (see balancing HRV section).
FRESH-AIR
SUPPLY
STALE-AIR
RETURN
DUCTS CONNECTING TO
RETURN-AIR DUCT SYSTEM
A98382
Fig. 5—Flexible Duct Fit-Up
V. 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. 6).
2. Cut two sections of plastic tubing, about 12" long and attach
them to each drain.
3. Join the two short sections of plastic 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. 6.)
A99268
Fig. 6—Condensate Drain With Loop Trap
5. Connect unit drain to building’s main drain. Provide slight
slope from unit for run-off.
—3—
8
6 FEET
18 IN.
FURNACE
6 IN.
6 IN.
HRV
INSULATED DUCT CONNECTING
FRESH AIR & EXHAUST TO
OUTSIDE
NOTE: SUPPLY & EXHAUST DUCTS TO HAVE
BALANCING DAMPERS (ON COLD SIDES)
(SEE STEP 4-CONNECT DUCTS TO HRV)
REAR
INLET HOOD
6 FEET
EXHAUST HOOD
18 IN.
NOTE: ALL DUCT WORK TO BE FIELD SUPPLIED.
A99265
Fig. 7—Exhaust Ventilation
—4—
3
6
6
4
2
1
10
8
4
9
7
A99283
14
Fig. 8—HRVBBLHU Conventional Horizontal Unit
12
1
3
1
2
3
2
4
14
5
12
4
6
11
7
13
8
5
11
6
13
9
10
7
8
9
A98409
10
A98408
Fig. 9—HRVBBSVU Compact Unit
COMPONENT DESCRIPTION
The following listed items are components of HRVBBLHU. (See
Fig. 8)
Fig. 10—HRVBBLVU Compact
High-Efficiency Unit
The following listed items are components of HRVBBSVU
and HRVBBLVU. (See Fig. 9 and 10)
1. Stale air return from building connected to return-air duct
system.
1. Stale air return from building connected to return-air duct
system.
2. Fresh air intake connected to outdoor air inlet hood.
2. Fresh air intake connected to outdoor air inlet hood.
3. Exhaust air connected to outdoor air exhaust hood.
3. Exhaust air connected to outdoor air exhaust hood.
4. Dampers are used to control air exchange with outdoor air
during defrost mode.
4. Mechanical filters trap dust contained in the air.
5. Mechanical filters trap dust contained in the air.
5. Heat recovery core is either a cross-flow type for compact
models, or a counter-flow type for high efficiency models.
The core transfers heat between the 2 air streams.
6. Heat recovery core is either a cross-flow type for compact
models, or a counter-flow type for high efficiency models.
The core transfers heat between the 2 air streams.
6. Blowers bring in fresh air from outside and exhaust stale air
to outside.
7. Blowers bring in fresh air from outside and exhaust stale air
to outside.
7. Electronic control circuit ensures proper unit operation.
8. Capacitor required for motor operation.
8. Fresh air supply from HRV connected to return air duct of
forced air system.
9. Condensation tray collects condensate from heat recovery
core.
9. Terminal connector block for wiring wall and timer controls.
10. Drainage tubes connects to sleeved grommets
10. Electrical cord connects to standard 115-v outlet.
11. Electronic control circuit ensures proper unit operation.
12. Fresh air supply from HRV connected to return air duct of
forced air system.
13. Terminal connector block for wiring wall and timer controls.
14. Electrical cord connects to standard 115-v outlet.
—5—
WALL CONTROL
I.
IV.
LOCATION
The HRV wall controls are unique to HRV and must be installed
for proper unit operation.
Three wall control options are available:
1. Basic Control
2. Standard Control
1. Initially the switch is off. All LEDs are off and HRV is
inoperative.
3. Automatic Control
II.
2. First push of mode button puts HRV into intermittent mode.
The HRV operates at high speed when there is a call for
dehumidification. Intermittent and exchange LEDs are illuminated. When dehumidistat is satisfied, HRV shuts down
and exchange LED goes out.
BASIC CONTROL OPERATION
The basic control contains a 3 position slide switch which is used
to manually select OFF, LOW, and HIGH speed blower operation.
The unit operates continuously when LOW or HIGH is selected.
(See Table 1.)
III.
AUTOMATIC CONTROL OPERATION
This control contains an adjustable dehumidistat and push button
switch to cycle between 3 modes of operation. There are 5 LEDs
to indicate mode of operation. (See Table 3.)
NOTE: This control is designed to be used primarily with
installations which are independent of a forced air system (models
HRVBBSVU and HRVBBLVU only).
3. Next push of mode button puts system in continuous mode.
Continuous and exchange LEDs remain on. The HRV
operates at high-speed blower during calls for dehumidification and low speed when dehumidistat is satisfied.
STANDARD CONTROL OPERATION
The standard control contains an adjustable dehumidistat, and a 3
position slide switch which is used to manually select between
OFF, LOW, and INTERMITTENT modes. There are 2 LEDs on
the control to indicate operating mode. (See Table 2.) This control
offers 2 modes of operation:
4. Next push of mode button puts system in circulation mode.
HRV operates in high speed at all times. Circulation LED
remains on. When there is a call for dehumidification,
exchange LED is on and HRV exchanges air with outside.
When dehumidistat is satisfied, HRV dampers close which
recirculates indoor air. The exchange LED goes off.
1. With switch off, HRV is inoperative and both LEDs are out.
(See Fig. 14.)
2. With switch on LOW, HRV continuously exchanges air
with outside. If dehumidistat is satisfied, blower will run in
low speed, otherwise, blower will run on high speed. Both
LEDs are illuminated all the time.
5. The maintenance light illuminates every 3 months to
indicate filter should be cleaned. It is reset by opening the
door to the HRV.
NOTE: The standard and automatic controls sense humidity not
temperature. Either control must be located in an area where it will
continually monitor fresh air circulating within the home. Install
HRV wall control as close as possible to main system thermostat
and follow same guidelines as installing a thermostat, (locate
approximately 5 ft. [60 in.] above floor, mount on an inside
partitioning wall, etc).
3. With switch on INTERMITTENT, the HRV exchanges air
with outside on high-speed blower, and unit shuts down
when dehumidistat is satisfied. The ON LED is illuminated
all the time, and AIR EXCHANGE LED is illuminated only
when unit is running. This mode is ideal for maintaining
proper humidity levels when no one is home.
—6—
TABLE 1—BASIC CONTROL
MODE
Off
OPERATION
Off
Air Exchange
With Outside
Air Exchange
With Outside
Low
High
DAMPER POSITION
Closed To Outside
FAN SPEED
Off
Open To Outside
Low
Open To Outside
High
TABLE 2—STANDARD CONTROL
MODE
DEHUMIDISTAT POSITION
OPERATION
DAMPER POSITION
FAN SPEED
Off
Any
Satisfied
Call for dehumidification
Satisfied
Call for dehumidification
Off
Off
Air exchange with outside
Air exchange with outside
Air Exchange with Outside
Closed to outside
Open to outside
Open to outside
Closed to outside
Open to outside
Off
Low
High
Off
High
Low
Intermittent
ON
LED
Off
On
On
On
On
AIR EXCHANGE
LED
Off
Off
On
Off
On
TABLE 3—AUTOMATIC CONTROL
MODE
DEHUMIDISTAT POSITION
Off
Any
Satisfied
Call for dehumidification
Satisfied
Call for dehumidification
Satisfied
Call for dehumidification
Any
Intermittent
Continuous
Recirculation
Any
OPERATION
DAMPER POSITION FAN SPEED
Off
exchange with outside
exchange with outside
exchange with outside
exchange with outside
Recirculation
Air exchange with outside
Any
Air
Air
Air
Air
Closed to outside
Open to outside
Open to outside
Open to outside
Open to outside
Closed to outside
Open to outside
Off
Off
High
Low
High
High
High
Any
INDICATOR
LEDS
OFF
Intermittent ON
Intermittent and Exchange ON
Continuous and Exchange ON
Continuous and Exchange ON
Recirculation ON
Recirculation and Exchange ON
Maintenance (open door)
TABLE 4—RECOMMENDED HUMIDITY LEVELS
DOUBLE-PANE
WINDOWS
55 percent
45 percent
35 percent
30 percent
25 percent
OUTSIDE TEMPERATURE
50° F
32° F
14° F
-4° F
-22° F
10° C
0° C
-10° C
-20° C
-30° C
TRIPLE-PANE
WINDOWS
65 percent
55 percent
45 percent
45 percent
35 percent
If the level of humidity falls too low in the winter months while operating in the continuous exchange mode, a humidifier may be integrated into the system. Intermittent
exchange mode may also be selected for short periods of time to increase the level of humidity.
V. 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 HRV circuit board. Following color
code. (See Fig. 11 and 12.) Replace top cover assembly.
NOTE: HRV wall control and circuit board operate on 12vdc.
VI. HUMIDITY SELECTOR
The humidity selector is a built-in dehumidistat designed to
properly control the level of humidity in the house during the
winter months. This control helps avoid condensation problems in
upper northern regions where indoor humidity is a problem during
the winter season.
NOTE: This control is not to be confused with a dehumidistat
used during the summer months to control high relative indoor
humidity.
Table 4 recommends humidity levels to avoid condensation.
YELLOW
RED
GREEN
BLACK
Y
ELECTRICAL CONNECTIONS
I. 115-VAC WIRING
The HRV 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.
R
GB
A98383
Fig. 11—Typical Wall Control
—7—
WALL CONTROL
MODE
CONTROL
CONNECTOR
AIR EXCHANGE
´
ECHANGE
D´AIR
50
60
MAINTENANCE
BLACK
% HUM. RELATIVE HUM. EXT. TEMP. EXT.
55%
10°C/50°F
40
45%
0°C/32°F
35%
–10°C/14°F
30
30%
–20°C/–4°F
70
80
GREEN
25
RED
20
YELLOW
% D´HUMIDITE´ RELATIVE HUMIDITY
A98410
Fig. 12—Control Connections
II. 20 MINUTE TIMER
A push button timer can be used to override the wall control and
put the HRV into high speed for 20 minutes. Connect switches in
parallel and connect leads to HRV terminals I, OC, and OL. (See
Fig. 14.) Push button locations are ideal in special activity areas,
such as, bathrooms or kitchen, where high-speed exhaust operation
is needed for a short period of time.
NOTE: The 20 minute timer will not function properly unless
HRV 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.
CAUTION: Do not use an extension cord as a power
source for operating the HRV.
II. 12-VDC WIRING
The HRV circuit board, wall control, and accessories operate on
12vdc. See Wall Control section, item Wiring and Fig. 11 and 12
for more information.
ACCESSORIES
I. INTERLOCK RELAY
The interlock relay kit, Part No. KVAAC0101FIR is required
when installing HRV into a forced-air heating and cooling system.
(See Fig. 13.) For additional information, refer to Installation
Instructions supplied with interlock relay kit.
The purpose of interlock relay kit is to energize indoor system
equipment (furnace or fan coil) blower whenever HRV is calling.
If HRV 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.
III. 60 MINUTE ADJUSTABLE TIMER
A 60 minute adjustable timer can also be used to override wall
control and put HRV into high-speed operation for a select amount
of time. Connect timer in parallel with push button timers, or to
HRV terminals OC and OL. (See Fig. 14.)
The 60 minute timer will provide a minimum of 30 minutes, and
a maximum of 80 minutes of ventilation at high speed. When
adjustable timer expires, an additional 20 minutes will remain as a
result of the internal timer of HRV electronic circuit board.
—8—
9-PIN AMP PLUG
THERMOSTAT
TERMINALS
W
R
G
3 2 1
6 5 4
9 8 7
Y
FOUR WIRE
TWO-WIRE
HEATING ONLY
HN61KK041 HONEYWELL
PILOT DUTY RELAY 125V
3
BLK
BLK
W
WHT
WHT
R
2
120V FROM
HRV
1
GND
115V FIELDSUPPLIED
FUSED
DISCONNECT
GND
FURNACE
AUXILIARY
J-BOX
G
C
Y
NOTE: Connect Y-terminal as
shown for proper operation.
CONDENSING
UNIT
TWO
WIRE
FURNACE
24V
TERMINAL BLOCK
A92460
Fig. 13—Interlock Relay Wiring Layout
J3
ELECTRONIC CONTROL
BOARD
THE WIRES FROM THE SWITCH
9
8
7
6
OL 5
OC 4
I 3
YELLOW – INDICATOR, (J3-3)
BLACK – COMMON, (J3-4)
RED – SWITCH, (J3-5)
RED
BLACK
YELLOW
J1
1
4
7
2
5
8
3
6
9
(OPTIONAL)
60 MINUTE TIMER
(OPTIONAL)
PUSH BUTTON SWITCHES
(5 SWITCHES MAXIMUM)
(OC)
BLACK – (J3-4)
COMMON
TERMINAL
STRIP
(I)
YELLOW – (J3-3)
INDICATOR
TERMINAL STRIP
RED – (J3-5)
SWITCH
TERMINAL STRIP
(OL)
BACK OF PUSH BUTTON SWITCH
A98386
Fig. 14—Push Button Timer Wiring Layout
—9—
TEMPORARY
FLOW COLLAR
BALANCING
DAMPER
BALANCING
DAMPER
STALE AIR
TO OUTSIDE
FRESH AIR
FROM OUTSIDE
STALE AIR RETURN
FROM BUILDING
FRESH AIR SUPPLY
TO BUILDING
A99266
Fig. 15—Balancing HRVBBLHU
FRESH AIR
FROM OUTSIDE
FLOW
COLLAR
STALE AIR
TO OUTSIDE
FRESH AIR
FROM OUTSIDE
12″
(300mm)
12″
(300mm)
STALE AIR
TO OUTSIDE
12″
(300mm)
12″
(300mm)
BALANCING
DAMPER
30″
(760mm)
12″
(300mm) BALANCING
DAMPER
BALANCING
DAMPER
TEMPORARY
FLOW COLLAR
FRONT
TEMPORARY
FLOW COLLAR
TEMPORARY
FLOW COLLAR
FRONT
RIGHT SIDE VIEW
RIGHT SIDE VIEW
A98425
Fig. 16—Balancing HRVBBSVU and HRVBBLVU
BALANCING HRV
Balancing intake and exhaust airflow is very important for proper
system operation and optimum performance when applying an
HRV. Unit balancing prevents a positive and/or negative pressure
within the home. Balancing the HRV is done by applying
temporary flow collars and permanent balancing dampers to the
fresh air intake and stale air exhaust ducts. (See Fig. 15 and 16.)
Airflow is determined by connecting a magnehelic gage to the
temporary flow collar. (See Fig. 17.) Both flow collars and
magnehelic gage are included in the accessory start-up balancing
kit.
If supply-air from outside is greater than exhaust-air from the
house, an imbalance can result over pressurizing the home. If
exhaust-air is greater than supply-air, combustion appliances may
backdraft, bringing exhaust fumes into the house. A balanced
condition will ensure optimum performance, provide satisfied
customers, and avoid expensive callbacks.
Before proceeding with balancing, all windows, doors, and fireplace flues should be tightly closed. No exhaust systems such as
range top exhausts, dryer exhaust, fume hoods, bath or roof fans
should be in operation. The forced-air furnace (if used for
circulation) should be operating in continuous fan mode for normal
operating speed.
I.
BALANCING DAMPERS
Balancing dampers (some times called butterfly dampers) are
provided with the HRVBBLHU. The dampers for the HRVBBSVU and HRVBBLVU are field supplied and should be permanently located in fresh-air intake and stale-air exhaust ducts
between HRV and exterior wall. (See Fig. 15 and 16) Some field
modification may be required to ensure proper installation of
balancing dampers while located in flexible duct. Insulating over
these dampers is strongly recommended after balancing is complete to prevent condensation problems.
II.
FLOW COLLAR
Flow Collars are temporary, and should be installed as close to
HRV as possible and in straightest sections of duct to ensure
accuracy. (See Fig. 15.) If only 1 flow collar is available, install
collar in stale-air duct of HRV, and record airflow. Next, install
—10—
collar in the fresh-air duct and record airflow. If 2 flow collars are
available, it will be much easier to read airflow and properly adjust
dampers to balance unit.
With speed control at maximum speed (high-speed operation) and
continuous air exchange occurring with outside, connect hoses
from flow collar to a magnehelic gage. (See Fig. 17.) The gage
must be leveled and zeroed before use to read accurately. If needle
falls below zero, reverse hose connections.
Measure exhaust air first, it is typically the lowest pressure due to
nature of system and ductwork. Next, measure fresh air. If fresh air
reading is higher than exhaust reading, adjust damper until reading
is same. If reading is lower, return to exhaust damper and adjust to
obtain same reading. You can use label on flow collar to convert
static pressure into airflow.
Once HRV is balanced and dampers are adjusted to equalize
airflow, use tape or drive screws to prevent damper blades from
moving. Remove flow collars and secure ducts. This procedure
should be repeated to ensure unit is balanced properly.
STALE AIR
TO OUTSIDE
6°C
43°F
MAX
MIN
AIRFLOW
DIRECTION
FLOW
COLLAR
MAX
MIN
ZEROING SCREW
CONVERSION
CHART
A98400
Fig. 17—Magnehelic Gage
NOTE: The flow collar directional arrow (on flow collar) must be
oriented in the airflow direction of unit.
NOTE: Some field modification may be required to ensure proper
temporary installation of flow collar during balancing when
insulated flexible duct is used.
FRESH AIR
FROM OUTSIDE
0°C
32°F
FRESH AIR
FROM OUTSIDE
0°C
32°F
STALE AIR
TO OUTSIDE
2°C
36°F
STALE AIR
FROM BUILDING
22°C
72°F
FRESH AIR
TO BUILDING
16°C
61°F
STALE AIR
FROM BUILDING
22°C
72°F
FRESH AIR
TO BUILDING
20°C
68°F
A98403
Fig. 18—HRVBBLHU and HRVBBSVU
Cross Flow
A98404
Fig. 19—HRVBBLVU Counterflow
STALE AIR
TO OUTSIDE
FRESH AIR
FROM OUTSIDE
FRESH AIR
TO BUILDING
STALE AIR
FROM BUILDING
STALE AIR
FROM BUILDING
FILTERED AIR
TO BUILDING
A99269
A99270
Fig. 21 —HRVBBLHU Airflow
During Defrost
Fig. 20—HRVBBLHU Airflow During
Air Exchange
—11—
FRESH AIR
FROM OUTSIDE
STALE AIR
TO OUTSIDE
FILTERED AIR
TO BUILDING
FRESH AIR
TO BUILDING
STALE AIR
FROM BUILDING
STALE AIR
FROM BUILDING
A92382
Fig. 22—HRVBBSVU Airflow During
Air Exchange
FRESH AIR
TO BUILDING
STALE AIR
TO OUTSIDE
A92383
Fig. 23—HRVBBSVU Airflow During
Recirculation and Defrost
FILTERED AIR
TO BUILDING
STALE AIR
FROM BUILDING
STALE AIR
FROM BUILDING
FRESH AIR
FROM OUTSIDE
Fig. 24—HRVBBLVU Airflow During
Air Exchange
VENTILATION EVALUATION
A92384
CAUTION: DO NOT use HRV during construction of a
house or when sanding drywall. This type of dust may
damage system.
A92385
Fig. 25—HRVBBLVU Airflow During
Recirculation and Defrost
The ventilation capacity of an HRV unit while at maximum speed
is defined according to greatest total airflow required. These
methods are derived from the Canadian National Building Code
1995 version and the CSA F326.1 revision.
The following 2 methods can be used to evaluate the approximate
ventilation needs of a house. Accuracy of calculations are dependent upon the information available and knowing critical measurements of the structure. (See Fig. 26.)
When ventilation requirement is determined, use Product Data
Sheets to reference unit airflow delivery and performance.
—12—
MASTER
BEDROOM
WASHROOM
#1
WASHROOM
#2
BEDROOM
#3
LIVING ROOM
#6
BEDROOM
#5
FAMILY ROOM
#10
BEDROOM
#4
1320 sq ft (125 sq m)
WASHLAUNDARY
ROOM
ROOM
#7
#8
KITCHEN
#9
DINING ROOM
#11
1320 sq ft (125 sq m)
BASEMENT
1320 sq ft (125 sq m)
A98388
Fig. 26—Floor Plan Example
METHOD 1
IV. HIGH-SPEED AIR EXCHANGE
To calculate approximate ventilation:
When high-speed air exchange occurs, K1 and K2 relays are
The sum of rooms X 10 CFM per room, plus 20 CFM for a master
energized and K5 relay is de-energized. This opens low-speed
bedroom or basement.
contacts, and closes high-speed contacts on K2 relay. This also
Example: 11 rooms X 10 CFM + 2 X 20 CFM = 150 CFM.
opens contacts on K5 relay which opens outside air damper. Then,
115vac is applied between orange and gray wires on Molex plug
NOTE: The master bedroom and basement are not included in
(pins 1 and 6) and blower motor runs in high-speed operation.
first part of this equation, but figured in at second part of equation.
Also, 115vac is applied across pins 5 and 7, this energizes
METHOD 2
interlock relay. (See Logic Diagram in Fig. 27 and 28.)
To calculate approximate ventilation:
V. LOW-SPEED AIR EXCHANGE
Referencing same example. (See Fig. 26.) Total cu ft X 0.3 per hr
= total. Take total
When low-speed air exchange occurs, K1 Relay is energized
and divide by 60 to
which closes the contacts. K2 and K5 relays are de-energized. This
get CFM.
keeps low-speed contacts closed and high-speed contacts open on
Example:
K2 relay, and opens outdoor air damper. 120vac is applied
1320 sq ft X 8 ft in height = 10560 cu ft per floor
between Red and Gray wires on Molex plug (pins 1 and 4) and
10560 cu ft X 3 floors = 31680 total cu ft in house
blower motor runs in low-speed operation. Also, 115vac is applied
31680 cu ft X 0.3 air change per hr = 9500 cu ft
across pins 5 and 7, this energizes interlock relay. (See Logic
9500 cu ft ÷ 60 minimum per hr = 160 CFM
Diagram in Fig. 27 and 28.)
Conclusion: The total amount of airflow needed is 160 CFM. This
CARE AND MAINTENANCE
falls within airflow range of a HRVBBLHU1150 size unit.
CONTROL BOARD OPERATION
WARNING: Before installing or servicing system, alI. BOARD FUNCTION
ways turn off main power to system. There may be more
NOTE: To ensure proper operation of HRV, configuration jumpthan 1 disconnect switch. Electrical shock can cause
ers are located on electronic control board and must match
personal injury or death.
configuration setup shown on Fig. 27 and 28 under Jumper Table.
Jumpers are factory set and do not require any changes unless
control board is replaced. If control board is replaced, or you
CAUTION: Although special care has been taken to
encounter unusual start-up operation, check jumpers to make sure
minimize sharp edges in the construction of your unit, be
they are located properly. (See Fig. 27 and 28.)
extremely careful when handling parts or reaching into
II. DEFROST
the unit.
The HRV continually monitors the outside air temperature. If the
outside air is at or below 23°F(-5°C), the HRV will initiate a
defrost cycle by closing the outside air damper and re-circulating
I. DOOR
warm indoor air through the heat recovery core. This happens
HRV door can be removed by unlatching brief case style latches,
approximately every hr with 5 minute defrost cycle. During this
then slide door to the right and remove it from hinges. Door must
process, core is defrosted without the use of electric strip heat. At
be in place and secured shut for proper operation.
5°F(-15°C), unit will defrost for 5 minutes every half hr. At
-22°F(-30°C), the unit will sense a need to defrost every 20
II. FILTER
minutes with a 5 minute cycle. See the Troubleshooting section for
Filters in HRV are washable and should be cleaned every 3
a control logic explanation.
months. Use a vacuum cleaner to remove heaviest portion of
III. OFF AND INTERMITTENT/OFF MODE
accumulated dust, then wash in lukewarm water. Allow filter to
completely dry before reinstalling. A dirty air filter will cause
When HRV is Off, K1 relay is open, and K5 relay is energized
excessive strain on blower motor. Never operate unit without a
which closes outside air damper. (See Logic Diagram in Fig. 27
filter. Vacuum out debris.
and 28.)
—13—
NOTE: If there is a short circuit or an open circuit at thermistor,
CPU will go into a 5 minute defrost cycle every 20 minutes. This
feature is not there on older board versions with 3pin jumpers.
In addition, regularly check and clean screens on exterior intake
and exhaust hoods when necessary.
CAUTION: DO NOT clean filters in a dishwasher and
DO NOT dry them with a heating appliance or permanent
damage will result.
III.
OVERRIDE TEST
To use override test function, a thermistor must be connected to the
control board. Unit must not be in defrost mode during an override
test.
A.
BLOWER MOTOR AND WHEEL
HRV blower motors are factory lubricated for life. Lubricating
bearings is not recommended. However, inspect and clean any
accumulated dirt and grease from blower motor and wheel
annually.
IV.
High Speed
1. Disconnect HRV from 115vac.
2. Unplug wall control wires at control module terminal block
inside HRV.
3. Plug HRV back to 115vac.
CLEANING THE CORE
4. Attach a wire across J3-8 and J3-9 (B and G) on control
module terminal block.
HRV unit is equipped with special heat recovery core and must be
handled with care. We recommend that it be washed once a year
following the season of most intense use. This will ensure
maximum efficiency of the plastic partitions within the core.
Allow heat recovery core to soak for 3 hr in a solution of warm
water and mild soap. Rinse under heavy stream of water. Hot water
and strong detergent will damage core and should NOT be used.
5. Push in door switch, this will initiate a high-speed exchange.
B.
Low Speed
1. Unplug HRV from 115vac.
2. Disconnect wall control wires at control module terminal
block inside HRV.
3. Plug HRV back to 115vac.
4. Connect a 3.9 Kohm resistor between J3-8 and J3-9 (B and
G) on control module terminal block.
5. Push in door switch, this will initiate a low-speed exchange.
TROUBLESHOOTING
WARNING: Before installing or servicing system, always turn off main power to system. There may be more
than 1 disconnect switch. Electrical shock can cause
personal injury or death.
IV. BLOWER SPEED SELECTION
Three-speed blowers are factory connected to electronic control
board on HIGH- and LOW-speed taps of blowers. Installer can
easily change low-speed tap to medium-speed tap so electronic
control will select between high and medium speed. Connections
can be changed at motor location. (See Tables 7 and 8.)
To change low speed to medium speed, proceed as follows:
1. Unplug unit from 115vac.
2. Locate blower assembly.
3. Locate red wire and blue wire coming from blower assembly.
4. Unplug red wire from quick connect.
5. Unplug protecting cap quick connection from blue wire and
put on red wire coming from blower. The cap is a safety
insulator.
6. Connect red wire of main harness to blue wire.
7. Replace wires.
CAUTION: Although special care has been taken to
minimize sharp edges in the construction of your unit, be
extremely careful when handling parts or reaching into
unit.
NOTE: Reference Table 5 Troubleshooting Chart
This can be a quick guide in resolving unit problems. It is also
recommended to review and understand Wall Control Board
Operation and Care and Maintenance sections before continuing.
There are 3 main parts to focus on when troubleshooting HRV
unit:
1. Wall control
2. Electronic control board
3. Blower motor
I. WALL CONTROL
Typically the wall control is either good, or it is bad. Use Table 1,
2, or 3 to determine if wall control is operating correctly. Use Fig.
12 to check control wire connections.
NOTE: The electronic control board and wall control operate on
12vdc.
V. DEFROST
Defrost cycle is controlled by a thermistor which is located in the
fresh-air intake passage (the thermistor unit is connected to J4 of
control module. See Fig. 27 and 28). When defrost temperature
sensor detects the need for defrost, K5 relay will close for 6
minutes while K1 and K2 remain energized.
This closes the outdoor air damper while running HRV blower on
high-speed. This process recirculates warm indoor air through heat
recovery core which melts any frost that has formed. Water created
in this process is collected by HRV and drained away. Frequency
of the defrost cycle depends on outdoor temperature (see Table
10).
If defrost is not working properly, check for proper damper
operation. To do this, turn unit to OFF position. Damper should
close.
SAFETY FEATURE
This new control has an added safety feature. If microprocessor
does not detect the thermistor or detects a short circuit, unit will
automatically go into a 6 minute defrost cycle every 20 minutes.
II. CONTROL BOARD
Electronic control board must have wall control attached before
unit will function properly. Also, configuration jumpers located on
control board must match configuration setup shown on Fig. 28
under Jumper Table. In addition, outside air thermistor must be
connected to control board for it to operate properly. See Table 6,
Temperature -vs- Ohm Chart, for valid temperature range.
III. BLOWER MOTOR
The HRV blower motor operates on 115vac, with 2-speed operation.
The easiest way to check blower speed operation is to use the wall
control and initiate a low-speed blower and high-speed blower
operation.
—14—
TABLE 5—TROUBLESHOOTING CHART
SYMPTOMS
CAUSES
Continuous exchange mode
used in small houses
Electrical supply interrupted
Improper calibration of air flow
Ventilation wheel out of adjustment
SOLUTIONS
Use Intermittent Mode
Check humidity level settings
Unit will operate when not in defrost mode.
Defrost cycle is based on outdoor ambient (see
Table 10)
Test wall control
Check connections
Check thermistor
Check units circuit breaker
Check calibration of flow rates
Remove the motor and screw wheel on properly
Air duct system too short
Install a duct silencer
Air too humid
Defrost condition is in effect
Outdoor temperatue is below 23°F
Unit not responding to wall control
Broken control wire
Unit stops momentarily
Air from distribution register too cold
Unit makes annoying noise
Noise level too high at distribution
registers when in high speed
TABLE 6—TEMPERATURE/OHM RELATIONSHIP
TEMP F°
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
TABLE 7—FACTORY SET BLOWER CONNECTION HIGH
OR LOW SPEED
OHMS
34,480
32,630
30,760
29,220
27,470
26,020
24,680
23,320
22,070
20,910
19,830
18,820
17,870
16,920
16,160
15,260
14,530
13,790
13,090
12,480
11,860
11,270
10,750
10,250
9,750
9,300
8,840
8,432
8,042
7,668
7,310
6,993
6,661
6,368
6,085
5,811
5,571
5,313
5,088
4,869
4,660
4,450
4,268
4,019
3,918
3,750
CONTROL
MODULE
J1-6
No Connection
J1-4
MAIN ELECTRICAL
HARNESS CABLE
Orange
No Connection
Red
BLOWER
WIRE
Orange
Blue + Cap
Red
SPEED
High
Medium
Low
TABLE 8—MODIFY BLOWER CONNECTION HIGH
OR MEDIUM SPEED
CONTROL
MODULE
J1-6
J1-4
No Connection
MAIN ELECTRICAL
HARNESS CABLE
Orange
Red
No Connection
BLOWER
WIRE
Orange
Blue
Red + Cap
SPEED
High
Medium
Low
TABLE 9—TEMPERATURE AND VOLTAGE
TEMPERATURE
°F (°C)
-22 (-30)
-4 (-20)
5 (-15)
14 (-10)
32 (0)
41 (5)
50 (10)
68 (20)
A.
VOLTAGE DC
VOLTS (J4)
3.5
2.7
2.3
2.0
1.4
1.1
0.9
0.6
Defrost Check
1. Make sure defrost cable is properly connected into J4.
2. Make sure thermistor assembly is correct. Measure thermistor temperature reading with multimeter. Select multimeter DC measurement scale 0-20v. At connector J4
(without removing thermistor cable), measure voltage between pins of thermistor cable. Depending on temperature
of outside air intake, values should correspond with those in
Table 9.
If reading is not correct (reading 0v for short circuit or 5v
for open circuit), change thermistor assembly.
3. If thermistor is good, do a RESET and see if defrost works.
If defrost still does not work, change circuit board.
B. Advanced Debugging
Defrost can be simulated using the following procedures:
1. Unplug unit from 115vac.
2. Disconnect thermistor assembly from J4.
3. Replug unit in 115vac and select high-speed exchange.
4. Defrost should start within 2 minutes after high-speed
exchange has been initiated.
—15—
TABLE 10—DEFROST CYCLE
STANDARD DEFROST (AS
SHIPPED)
No Defrost
6 Minute Defrost/60Minute Exchange
6 Minute Defrost/32 Minute Exchange
6 Minute Defrost/20 Minute Exchange
OUTSIDE TEMPERATURE °F
Above 23°F
23°F to 5°F
4°F to -17°F
Below -18°F
EXTENDED DEFROST
(JUMPER JU1-F REMOVED)
No Defrost
10 Minute Defrost/30 Minute Exchange
10 Minute Defrost/20 Minute Exchange
10 Minute Defrost/15 Minute Exchange
TABLE 11—JU1 JUMPER DEFINITION
JU1A
JU1B
JU1C
JU1D
UNIT IDENTIFICATION
JU1E
Reverse Damper Operation
In = Normal
Out = Inverse
JU1F
JU1G
Factory Set
Always In
Factory Set
Always In
TABLE 12—JUMPER LOCATIONS
MODEL
HRVBBLHU1150
HRVBBLHU1250
HRVBBSVU1150
HRVBBSVU1250
HRVBBLVU1150
HRVBBLVU1200
HRVBBLVU1330
JU1A
OUT
OUT
IN
IN
IN
IN
IN
JU1B
IN
IN
OUT
OUT
OUT
OUT
OUT
JU1C
IN
IN
OUT
OUT
OUT
OUT
OUT
JUMPER TABLE
JU1D
OUT
OUT
OUT
OUT
OUT
OUT
OUT
JU1E
IN
IN
IN
IN
IN
IN
IN
JU1F
IN
IN
IN
IN
IN
IN
IN
JU1G
IN
IN
IN
IN
IN
IN
IN
VII. ERROR SIGNALING
Two types of error can be signaled by the wall control (automatic
wall control only). In case of error, indicators on wall control will
flash.
When error occurs, set dehumidistat at 80 percent position. This
will enable you to properly troubleshoot problems.
5. After test unplug unit.
6. Connect thermistor cable to J4.
7. Replug unit back in 115vac.
VI. CONTROL MODULE JUMPERS
Jumpers on the control module give exact configuration to HRV
micro-controller. If there is a mistake in the jumper configuration,it can cause improper unit operation. This control has a
simplified jumper selection mode. Jumper selection is done by the
presence or absence of jumper at specific location (See Tables 11
and 12.)
TYPE 1—LOSS OF MEMORY (AUTO MODEL ONLY)
All indicators flash rapidly (rate of about once every sec). When
this occurs, reset power and check if problem still exists. If
indicators are still flashing, check red wire for shorting on another
component. If error still exists, wall control has lost its memory.
Replace wall control.
The defective wall control still works even when flashing, it is
working in backup mode. Original modes of wall control are
replaced by backup mode. (See Table 13.)
WARNING: Always disconnect unit from 115vac prior
to making any jumper change. If unit is not disconnected,
micro-controller will never see jumper change. Failure to
follow this warning could result in electrical shock or
death.
TABLE 13—BACK MODE
MODES
OFF
1
2
3
—16—
WALL CONTROL
BACKUP MODE
OFF
INTERMITTENT
LOW-SPEED EXCHANGE
HIGH-SPEED EXCHANGE
TABLE 14—SYSTEM WIRING COLORS AND CONNECTIONS
CONTROL MODULE
Terminal Block No.
J3-9
J3-8
J3-7
J3-6
WALL CONTROL
WIRE
Terminal Block
Identification
B
G
R
Y
Color
Terminal No.
Terminal Identification
Black
Green
Red
Yellow
J1-4
J1-3
J1-2
J1-4
B
G
R
Y
B. Case 2
User changes the mode but, HRV does respond. All indicators
flash at a rate of about once every 8 sec. Check all wires to wall
control particularly green wire. If problem still exists, test wall
control with 5 ft of wire from HRV. If this works, change wall
control module inside HRV.
TYPE 2—COMMUNICATION PROBLEM OR UNSUPPORTED MODE (AUTO MODEL ONLY)
All indicators flashing at a rate of about once every 8 sec.
Communication is not properly entered or is not working.
A.
WALL CONTROL
C. Reset
To reset HRV, proceed as follows:
1. Unplug HRV from 115vac.
2. Wait 15 sec.
3. Plug HRV into 115vac.
Case 1
User changes the mode on wall control and HRV responds to
command (OFF, LOW, or HIGH speed). Check all wires to wall
control particularly red wire. (See Table 14.)
—17—
CONNECTION DIAGRAM
BLK
G
R
Y
LOGIC DIAGRAM
120V 60Hz
WALL CONTROL
WALL CONTROL
WALL CONTROL
WALL CONTROL
NOTE 1, 5
NEUTRAL
J1 2
FROM MAIN
S1
A1
NC
J1 6
OVERRIDE SWITCH
OVERRIDE SWITCH OPTIONAL
NOTE 5
OVERRIDE LED
J1 3
M1
FAN
MOTOR
J1 1
LOW
J1 4
K1
K2
RELAY RELAY
RELAY K5
MED
HIGH
M2
DAMPER
MOTOR
J1 9
J1 8
A1
NOTE 4
ELECTRONIC ASSEMBLY
T1
GY
7
4
R
R
NEUTRAL
HIGH
FAN MOTOR
MEDIUM
LOW
JU1
BN
BN
BK
9
BL
X2
O
Y
BL
M2
1
BL
2
BL
BK
LINE
JU1E
JU1F
JU1G
23°F
5°F
-22°F
-5°C
-15°C
-30°C
6/20
OUT
OUT
IN
IN
OUT
IN
IN
HRVBBLHU1150
A
6/32
6/32
OUT
IN
IN
OUT
IN
IN
HRVBBLHU1250
A
6/32
6/32
6/20
OUT
NO
CHANGE
EXTENDED DEFROST
ALL TYPES
A
10/30
10/20
10/15
K4
0
1
1
1
1
1
0
K5
0
1
1
0
0
0
0
NO
NO
NO
NO
CHANGE CHANGE CHANGE CHANGE
RELAY
MODE
K1
Intermittent
0
Exchange Low
1
Exchange High
1
Circulation low
1
Circulation high
1
Defrost Cycle
1
Off
0
0 = Relay coil is de-energized
1 = Relay coil is energized
NS = Not supported
W1
W
BK
120 V 60 HZ
NEMA-15P
5-15 PLUG
S1
2. FACTORY SET WIRING FOR SLOWER SPEED SELECTION IS HIGH AND
LOW. MEDIUM SPEED CAN BE SELECTED INSTEAD OF LOW SPEED.
DISCONNECT RED WIRE FROM THE MOTOR RED TAP. AND CONNECT
TO THE MOTOR BLUE TAP.
K2
0
0
1
0
1
1
0
COLOR CODE
3. IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE REPLACED.
USE THE SAME OR EQUIVALENT WIRE.
LINE VOLTAGE
4. USE FACTORY SUPPLIED PROTECTIVE TUBING.
LOW VOLTAGE
AND FIELD WIRE
5. FIELD WIRING MUST COMPLY WITH APPLICABLE CODES,
ORDINANCES AND REGULATIONS.
JU1D
FUNCTION TABLE
A
DOOR INTERLOCK
SWITCH
NOTES
1. CONTROLS AVAILABLE. SEE INSTALLATION MANUAL.
( LOW VOLTAGE ONLY 12 VOC.).
JU1C
DAMPER
MOTOR
G
NEUTRAL
NO
JU1B
DEF ROST T IME
(DEFROST/VENTILATION)
MINUT ES
OUT
NO
CHANGE
MAIN EARTHING
POINT
COM
MODEL
TYPE
ABCDEFG
JU1A
Y
2
1
JUMPER TABLE
C1
(NOTE 2)
6
W
GY
O
G
BL
R
NC
3 2 1
J1
ELECTRONIC ASSEMBLY
M1
X1
1
GY
2
O 3
G
FU N C TION
TABL E
L ETTER
J3
R1
3
J4
4
-t
—18—
5
6
JU1
7 8
9
ABCDEFG
2
1
DEFROST
TEMPERATURE
SENOR
R
V
W
Y
BN
NC
RED
VIOLET
WHITE
YELLOW
BROWN
NO CONNECTION
BK
BL
GY
O
G
BLACK
BLACK
GREY
ORANGE
GREEN
A00035
Fig. 27—Wiring Diagram for Models: HRVBBLHU1150, and HRVBBLHU1250
NOTE 1
OPTIONAL
WALL CONTROL (BLACK)
WALL CONTROL (GREEN)
WALL CONTROL (RED)
WALL CONTROL (YELLOW)
OVERRIDE SWITCH (RED)
OVERRIDE SWITCH (BLACK)
OVERRIDE LED (YELLOW)
CONNECTION DIAGRAM
LOGIC DIAGRAM
120VAC
NEUTRAL
LOW
DEFROST
TEMPERATURE SENOR
-t
HIGH
DOOR
INTERLOCK
SWITCH
MED
(NOTE 5)
J1 4
J1 3
K1
RELAY
K2
RELAY
HIGH
J1 6
(NOTE 3)
7 8
JU1
6
NC
DAMPER
MOTOR
1
BN
BN
LOW
J1 9
K5
RELAY
CONTROL BOARD
4
J1 8
G
J3
3
J4
FAN MOTOR 1
1
GY 2
O
7
3 2 1
4
R
R
BN
BN
LOW
FUNCTION TABLE
A
G
9
(OPTIONAL)
6
BK
MOTOR
CAPACITOR
NEUTRAL
HIGH
MEDIUM
GY
O
BL
R
NC
TO J1 PIN 7
BL
24 VAC TO
INDOOR
EQUIPMENT
Y
TO J1 PIN 5
O
JU1
INTERLOCK RELAY KIT
1
Y
2
BL
2
IN
HRVBBSVU1150
A
IN
HRVBBSVU1200
A
IN
IN
HRVBBLVU1150
A
IN
IN
IN
HRVBBLVU1200
A
IN
IN
IN
HRVBBLVU1330
A
2
1
JUMPER TABLE
DAMPER MOTOR 2
(NOTE 4)
ABCDEFG
Y
JU1A
JU1B
JU1C
JU1D
JU1E
JU1F
JU1G
BL
IN
OUT
OUT
OUT
IN
IN
IN
OUT
OUT
OUT
IN
IN
Y
IN
OUT
OUT
OUT
IN
BL
IN
OUT
OUT
OUT
IN
OUT
OUT
OUT
DAMPER MOTOR 1
1
MODEL
FU N C TION
TABL E
L ETTER
—19—
J1
J1 1
DAMPER
MOTOR
2
5
R
MOTOR
CAPACITOR
NEUTRAL
HIGH
MEDIUM
GY
O
BL
R
FAN
MOTOR
1
MED
(NOTE 5)
2
1
9
ABCDEFG
1
2
GY
O
GY
W
J1 2
LOW
FAN MOTOR 2
POWER CONTROL BOARD
FAN
MOTOR
2
MODE
K1
Intermittent
0
Exchange Low
1
Exchange High
1
Circulation low
1
Circulation high
1
Defrost Cycle
1
Off
0
0 = Relay coil is de-energized
1 = Relay coil is energized
NS = Not supported
W
BK
NEUTRAL
COM
DOOR INTERLOCK SWITCH
G
BK
NO
120VAC 60HZ
LINE
NOTES
1 - THREE CONTROLS AVAILABLE. SEE THE INSTALLATION MANUAL
(LOW VOLTAGE ONLY 12 VDC).
NEMA-15P
2 - FAN MOTOR 2 IS USED ONLY WITH HRVBBLHU1250, HRVBBLVU1200,
AND HRVBBLVU1330.
3 - DAMPER MOTOR 2 IS USED ONLY WITH HRVBBLVU1200 AND
HRVBBLVU1330.
COLOR CODE
LINE VOLTAGE
LOW VOLTAGE
AND FIELD WIRE
OPTIONAL
R
V
W
Y
BN
NC
RED
VIOLET
WHITE
YELLOW
BROWN
NO CONNECTION
BK
BL
GY
O
G
BLACK
BLACK
GREY
ORANGE
GREEN
4 - IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE
REPLACED, USE THE SAME OR EQUIVALENT WIRE.
5 - FACTORY SET WIRING FOR BLOWER SPEED SELECTION IS HIGH AND
LOW. MEDIUM SPEED CAN BE SELECTED INSTEAD OF LOW SPEED.
DISCONNECT RED WIRE FROM MOTOR(S) RED TAP AND CONNECT TO
MOTOR(S) BLUE TAP.
A00090
Fig. 28—Wiring Diagram for Models: HRVBBSVU1150, HRVBBSVU1200, HRVBBLVU1150, HRVBBLVU1200, and HRVBBLVU1330
RELAY
K2
0
0
1
0
1
1
0
K5
1
0
0
1
1
1
1
2 3⁄16†
(56.2)
4 PLCS
4 3⁄4†
(120.6)
2 5⁄16†
(58.7)
1†
(25.4)
2 PLCS
G
—20—
5 7⁄8† DIA
(149.2)
4 PLCS
4
1
18 1⁄8†
(460.4)
20†
(508.0)
3
2
15†
(381.0)
16 7⁄8†
(428.6)
D
C
F
B
E
30 1⁄4†
(768.3)
A
NOTES:
1. FRESH AIR FROM OUTSIDE TO HRV
2. FRESH AIR FROM HRV TO HOUSE
3. STALE AIR FROM HOUSE TO HRV
4. STALE AIR FROM HRV TO OUTSIDE
A99263
MODEL NO.
HRVCBBLHU1150
HRVBBLHU1250
A
in.
15-1/8
19
mm
384.2
483
B
in.
mm
4-1/16
104
5-13/16 147.7
C
in.
5-5/8
5-1/16
D
mm
143.3
128.1
in.
14-1/2
14-1/2
mm
368.9
368.9
E
in.
mm
11-3/8
288.9
11-3/16 254.0
Fig. 29—Dimensional Drawing HRVBBLHU
F
in.
mm
4-3/8
111.3
5-13/16 401.6
G
in.
7-3/4
9-5/16
mm
196.9
236.6
5 7⁄8″ DIA
[149.2]
2 PLCS
4 9⁄16″
[115.9)]
3
1
POWER
CORD
F DIA
2 PLCS
WALL
CONTROL
WIRING
3⁄8″ DIA
[9.5]
3 3⁄16″
[81.0]
C
2
B
5 3⁄4″
[146.0]
1 15⁄16″
[23.8]
D
19 3⁄4″
[501.7]
4
2 3⁄16″
[55.6]
4 PLCS
1″
[25.4]
2 PLCS
—21—
NOTES:
1. FRESH AIR FROM OUTSIDE TO HRV
2. FRESH AIR FROM HRV TO HOUSE
3. STALE AIR FROM HOUSE TO HRV
4. STALE AIR FROM HRV TO OUTSIDE
27″
[685.8]
22 1/16″
[560.4]
A
15 11⁄16″
[398.5]
DRAINS
11⁄16″ DIA.
[17.5]
2 PLCS
E
G
A98003
MODEL NO.
HRVBBSVU1150
HRVBBSVU1200
HRVBBLVU1150
in.
18-1/2
A
mm
469.9
B
in.
mm
4-11/16 119.1
C
in.
mm
13-5/16 388.2
D
in.
mm
15-7/16 392.1
E
in.
mm
13-9/16 344.5
in.
5-7/8
mm
149.2
G
in.
mm
19-15/16 506.2
24-1/2
622.2
8-3/16
19-5/16
14-9/16
16-15/16
6-7/8
174.6
19-15/16
208.0
490.6
369.9
430.2
Fig. 30—Dimensional Drawing HRVBBSVU and HRVBBLVU
F
506.2
2
17 9⁄16″
[446.9]
3
5 13⁄16″
[147.6]
8 1⁄8″ DIA
[206.4]
2 PLCS
4 3⁄4″
[120.6]
NOTES:
1. FRESH AIR FROM OUTSIDE TO HRV
2. FRESH AIR FROM HRV TO HOUSE
3. STALE AIR FROM HOUSE TO HRV
4. STALE AIR FROM HRV TO OUTSIDE
15 1⁄2″
[393.7]
4
5 7⁄8″ DIA
[148.2]
2 PLCS
1 1⁄2″
[38.1]
2 PLCS
18 5⁄16″
[465.1]
1
6 15⁄16″
[176.2]
2 3⁄16″
[55.6]
2 PLCS
1 ″ [25.4]
2 PLCS
7 1⁄8″
[181.0]
—22—
POWER
CORD
43″
(1092.2)
41″
[1041.4]
12 3⁄4″
[323.9]
23 15⁄16″
[608.0]
24 1⁄16″
[611.2]
WALL
CONTROL
WIRING
3⁄8″ DIA
[9.5]
22 3⁄8″
[568.3]
DRAIN
11⁄16″DIA.
[17.5]
2 PLCS
19 1⁄16″
[484.2] 8 3⁄16″
[208.0]
7 3⁄16″
[182.6]
A98001
Fig. 31—Dimensional Drawing HRVBBLVU1200 or HRVBBLVU1330
SERVICE TRAINING
Packaged Service Training programs are an excellent way to increase your
knowledge of the equipment discussed in this manual, including:
• Unit Familiarization
• Maintenance
• Installation Overview
• Operating Sequence
A large selection of product, theory, and skills programs is available, using popular
video-based formats and materials. All include video and/or slides, plus companion
book.
Classroom Service Training plus "hands-on" the products in our labs can mean
increased confidence that really pays dividends in faster troubleshooting, fewer
callbacks. Course descriptions and schedules are in our catalog.
CALL FOR FREE CATALOG 1-800-962-9212
[ ] Packaged Service Training
[ ] Classroom Service Training
A94328
—23—
© 2000 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231
—24—
Printed in U.S.A.
hrv712
Catalog No. 13HR-VB3