Reversomatic RHRV-CF100PECM Owner's manual

790 Rowntree Dairy Road, Woodbridge, ON Canada L4L 5V3 Tel: [phone] Fax: [phone]
www.reversomatic.com [e-mail]
US
®
CERTIFIED C
New
RHRV-CF100PECM
Polypropylene Core
RERV-C100NF
Enthalpy Core
RHRV-C100PNF
Polypropylene Core
HRV /ERV INSTALLATION AND
OPERATION INSTRUCTIONS
Field Balancing Ports

IMPORTANT SAFETY INSTRUCTIONS
READ AND SAVE THESEINSTRUCTIONS
!WARNING !
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK
OR INJURY, OBSERVE THE FOLLOWING:
1. Read all the instructions carefully before installation,
operation or maintenance of the unit. Failure to comply
with instructions could result in personal injury and/or
property damage.
2. Installation of the unit and the corresponding electrical
wiring must be done by a qualified person and be in
accordance with all municipal and national electrical
codes and pertinent industry standards should be
verified before installation.
3. Use this unit only in the manner intended by the
manufacturer. If you have any questions, contact the
manufacturer.
4. Moving Parts, Disconnect Power supply before opening.
ensure that all the nuts and screws are securely
fastened before restarting the unit.
5. Before servicing or cleaning the unit, switch power off at
service panel and lock the service disconnecting means
to prevent power from being switched on accidentally.
When the service disconnecting means cannot be
locked, securely fasten a prominent warning device,
such as atag, to the service panel.
6. When cutting or drilling into wall or ceiling, make sure
that you do not damage electrical wiring and other
hidden utilities.
7. To reduce the risk of fire, use only metal ductwork.
Do not use any accessories not recommended by the
manufacturer.
8. When performing installation, servicing or cleaning
these unit, it is suggested to wear safety glasses and
gloves.
9. Do not use this unit for commercial purpose.
10. For residential use only. The unit mustbe grounded.
11. Do not install in acooking area.
12. This unit is not designed to exhaust combustion and/or
dilution air for fuel burning appliances.
!CAUTION !
1. Turn the unit OFF during construction or repair to avoid
filter blockage.
2. Exhaust air outside -Do not intake / exhaust air into
spaces within walls, crawl spaces, garage, or into attics.
3. Unit has to be installed in accordance to National and
Local Building Code.
4. When leaving house for along period of time (more than
two weeks), a responsible person should check if unit
operates adequately.
5. Published efficiencies are based on balanced air-flows
on supply and exhaust.
PACKAGING INSPECTION
Open the box and check to make sure all the parts and
accessories are present and in good condition. If you find
any parts missing or any shipping damage please contact
factory or our distributor immediately.
HRV and ERV Typical Installations
•-Fully Ducted System 8
- Furnace Return Air-duct connection
- Semi Ducted System
•Horizontal Vertical 9
•Single Vent & Access Door Installation 10
•Drain Connection 10
Air Flow Balancing
11
•Balancing Procedure
•Pitot Tube Air Flow Balancing 11
Maintenance
12
•Regular Maintenance
•Annual Maintenance 13
Troubleshooting
Climate Zone
13-14
14
CONTENTS
Parts List
1
•RERV-C100NF
•RHRV-CF100PECM 2
Wiring Diagram
•Control Board and Switches
•Furnace /Fan-Coil /Heat Pump Interlock
3-4-5
6-7
Standard Furnace Interlock Wiring
Alternate Furnace Interlock Wiring

Parts List 1
Referenc
e
Description Part no.
RERV-C100 NF RHRV-C100PNF
QTY. QTY.
1HRV/ ERV - lid, Pan Assembly 9315 1 1
2Polypropylene collar 5" Dia. 014043C 2 2
3Enthalpy Core 9314 1n/a
Polypropylene Core 9313 n/a 1
4Filter 7" x12" (MERV -4) 9358 2 2
5Temperature Sensor 9326 1 1
65" Polypropylene Backdraft Damper 014043 2 2
7Blower -Supply /Exhaust 9317 2 2
8AdjustableDoor Latch 9319 1 1
9Drain Spout Assembly 9320 2 2
10 Core Locking Bracket 9321 1 1
11 Core Locking Nut 014016 1 1
12 Safety Switch 9322 1 1
13 Main control Board 9361 1 1
14 Main Control Board Bracket 9355 2 2
15 Door Hinges 9328 1Set 1Set
16* Mounting Brackets 011135 4 4
17* “T” Connector 9330 1 1
18 Webbing/Brackets/Ladder Locks 9332 2Sets 2Sets
19* Chains/Springs/Brackets 9354 1Set 1Set
20* Drain Pipe 9331 1 1
21* Motorized damper spring return 120V 9362 1 1
22* Motorized Damper Spring return Built-in by
Factory
9363 1 1
RERV-C100NF
EnthalpyCore
RHRV-C100PNF
Polypropylene core
15
17 *
1
5
2
3
6
4
7
89
10
11
12
14
13
Old version New version
14
16
20 *
6-Pin harness
(Provided with new version
to wire timers/ Intermittent
switch &Interlock with
Furnace, Fan coil &
Heat pump)
P/N# 6PIN
*Optional Parts:
18*
1 9*
22*
2
7
21*

Parts List 2
Reference Description Part no.
RHRV-CF100P ECM
QTY.
1HRV/ ERV - lid, Pan Assembly 9315 1
2Polypropylene collar 5" Dia. 014043C 2
3Counterflow Plastic Core CF100 1
4Filter 7" x12" (MERV -4) 9358 2
5Temperature Sensor 9326 1
65" Polypropylene Backdraft Damper 014043 2
7ECM Motors 013085 2
8AdjustableDoor Latch 9319 1
9Drain Spout Assembly 9320 2
10 Core Locking Bracket 9321 1
11 Core Locking Nut 014016 1
12 Safety Switch 9322 1
13 Main control Board (Superior ECM)9361-ECM 1
14 Main Control Board Bracket 9355 2
15 Door Hinges 9328 1Set
16* Mounting Brackets 011135 4
17* “T” Connector 9330 1
18 Webbing/Brackets/Ladder Locks 9332 2Sets
19* Chains/Springs/Brackets 9354 1Set
20* Drain Pipe 9331 1
21* Motorized damper spring return 120V 9362 1
22* Motorized Damper Spring return Built-in by Factory 9363 1
14
13
RHRV-CF100P ECM
Polypropylene Core
*Optional Parts:
18
5
8
9
21
20 *
17 *
16 *
*
19 *2
22*
6
1
12
10 11
4
3
7
15
P/N# 6PIN
6-Pin harness
(Provided with new
version to wire
timers/ Intermittent
switch & Interlock
with Furnace, Fan
coil & Heat pump)
13

Wiring Diagram (RERV-C100NF/ RHRV-C100PNF) 3
FAN 2 FAN 1
LIN E
NEUTRA
L
or
b) c)
Hi
Low
120Vac / 1 /
60Hz Power
Supply
Hi
Low
Furnace, Fan Coil,
Heat Pump
Interlock
120VAC/ 1 /60Hz
Power Supply
Ground
Fuse
Off
Low HighLow High
Exhaust
Fan Speed
Supply
Fan Speed
Supply Fan Exhaust Fan
b)
Temp. Sensor
Safety Switch
LowVoltage
+ 5
DA
T C
Speed
Contac
t
L0/HI
SPEED
HV INPUT
Remote
0n/0ff
(HV-High Voltage)
NC
C
N 0
Ext. Interlock
NC
C 0 M
N 0
Timer
Switch
2
Timer
Switch
3
Timer
Switch
4
to Control
Board
Note:
Make sure, the Line must be connected to
Line and Neutral connected to Neutral.
Unit will not function if not connected correctly.
YEL
RED
GND
YEL
RED
GND
+5 DAT C
YEL
RED
GND
RED
YEL
GND
Note: Same power source can be
used for wall switch,Time delay switch
(TC100-120& TC100-120P) andHRV /ERV
e)
On
TC100-120P
TC100-120
d)
RED BLACK
W HITE
Ground
120Vac / 1 / 60Hz
Power Supply
(TC100-5V)
Important Note:- When installing timers or time delay switches, make sure
that they are for appropriate HRV/ERV models.
Damper Motor
(Single winding)
Option-1
ExternalDamper
Motor
Option-2
Light
On / Off
HRV/ ERV
Hi /Low
120Vac / 1 / 60Hz
Power Supply
Jumper
(remove jumperto install
master ON/OFF switch)
Light/ Switch Option
f) b)
L0/HI
Speed
HV Input
Remote
0n/0ff
HV
NC
C
N 0
Ext. Interlock
Damper
Interlock
Ground
YEL
RED
GND
4 - Speed Controller for Manual Balancing
and Air Flow Adjustment
(Turn the Knob clockwise to increase speed)
g)
for HRV/ERV
f ) Light
g) Intermittent Switch
(IC 100-5V)
a)
(Also availablewithout
OFF mode)
Option 2:
Note:
Up to 4 Timer Switches (TC 100-5V)
and one intermittent switch (IC 100-5V)
can be connected to control board of
HRV/ERV by using three 24 AWG(min.)
standard Copper wires as shown.
Maximum total wire length 75ft.
(see option 2)
Intermittent
OR Timer
Switch 1
But, overall functionality of both type of boards are same.
CONTROL BOARD: Old Version
Optional Accessories (Not Supplied)
a) Timer Switch (TC100)
b) Wall Switch
c) Dehumidistat
d) Time Delay Switch (TC100-120 &TC100-120P)
e) Master On/Off Switch
Recently we modified our control board layout to provide easy wiring connections for timer switches/ Intermittent switches (low
voltage) without accessing to our electrical box. Initially, some units may come with older version or newer version of control boards.

GND DAT 5V
RED
W HITE
BLACK
LowVoltage
NO
NC C
Interlock
(These connections
must be done inside
the electrical box)
CONTROL BOARD:New Version
Optional Accessories (Not Supplied)
a) Timer Switch (TC100)
b) Wall Switch
c) Dehumidistat
d) Time Delay Switch (TC100-120 &TC100-120P)
e) Master On/Off Switch
Recently we modified our control board layout to provide easy wiring connections for timer switches/ Intermittent switches (low
voltage) without accessing to our electrical box. Initially, some units may come with older version or newer version of control boards.
But, overall functionality of both type of boards are same.
Wiring Diagram (RERV-C100NF/ RHRV-C100PNF)4
FAN2 FAN1
LINE
NEUTRAL
or
c)b)
Hi
Low
120Vac / 1 / 60Hz
Power Supply
Hi
Low
Furnace, Fan Coil,
Heat Pump
Interlock
120 VAC / 1 / 60Hz
Power Supply
Ground
Fuse
On
Off
Low HighLow High
Exhaust
Fan Speed
Supply
Fan Speed
Supply Fan Exhaust Fan
b)
Temp. Sensor
Safety Switch
Speed
Contac
t
LO/HI
SPEED
HV INPUT
NC
C0M
N0
Note:
Timer
Switch
2
Timer
Switch
3
to Control
Board
Note:
Make sure, the Line must be connected to
Line and Neutral connected to Neutral.
Unit will not function if not connected correctly.
RED
YEL
YEL
RED
GND
+5 DAT C
YEL
RED
GND
YEL
RED
GND
TC100-120P
Note: Same power source can be
used for wall switch,Time delay switch
(TC100-120 & TC100-120P) andHRV /ERV
e)
TC100-120
d)
RED BLACK
W HITE
Ground
120Vac / 1 / 60Hz
Power Supply
Timer
Switch
4
(TC100-5V)
Important Note:- When installing timers or time delay switches, make sure
that they are for appropriate HRV/ERV models.
(Single winding)
Option-1
DamperMotor
ExternalDamper
Motor
Option-2
HRV/ ERV
Hi /Low
Light
On / Off
120Vac / 1 / 60Hz
Power Supply
Light / Switch Option
f) b)
Damper
Interlock
Ground
YEL
RED
GND
4 -Speed Controller for Manual Balancing
andAir FlowAdjustment
(Turn the Knob clockwise to increase speed)
g)
for HRV/ERV
f ) Light
g) Intermittent Switch
(IC 100-5V)
a)
(Also availablewithout
OFF mode)
Option 2:
standardCopper wires as shown.
Maximum total wire length 75ft.
(see option 2)
Up to 4 Timer Switches (TC 100-5V)
and one intermittent switch (IC 100-5V)
can be connected to control board of
HRV/ERV by using three 24 AWG(min.)
Intermittent
OR Timer
Switch 1
L0/HI
Speed
HV Input
Remote
0n/0ff
HV
Jumper
(remove jumper to install
master ON/OFF switch)
N C
C
N O
Ext. Interlock
Remote
ON/OFF
(HV-High Voltage)
Low Voltage
(Dry contact)
G N DA
T
5 V
GRN

Wiring Diagram : RHRV - CF100PECM (Superior ECM) 5
LINE
LINE
SUPPLY
NEUT
LINE EXHAUST
LINE
NEUT
DAMP NC
NEUT
DAMP NO
NEUT
LINE SW
On
Off
Remote e)
(HV-High Voltage)
ON/OFF
Low HighLow High
Exhaust
Fan Speed
Supply
Fan Speed
4 - Speed Controller for Manual Balancing
and Air Flow Adjustment
(Turn the Knob clockwise to increase speed)
or
120 Vac / 1 / 60Hz
Power Supply
Low
b)
Note: Same power source can be
used for wall switch,Time delay switch
(TC100-120 &TC100-120P) and HRV /ERV
TC100-120P
d) TC100-120
RED
BLACK
WHITE
Ground
120 Vac /1/60Hz
Power Supply
b)
c)
Hi
Low
Low Voltage
Speed
Contact
(Dry contact)
GND DAT 5V
RED
WHITE
BLACK
Low Voltage
NC CNO
Interlock
(These connections
must be done inside
the electrical box)
a)
Furnace, Fan Coil,
Heat Pump
Interlock
RED
YEL
g)
(Also available without
OFF mode)
GRN
Note:
Up to 4 Timer Switches (TC 100-5V)
and one intermittent switch (IC 100-5V)
can be connected to control board of
HRV/ERV by using three 24 AWG (min.)
standard Copper wires as shown.
Maximum total wire length 75ft.
(see option 2)
Option 2:
Timer
Switch
2
Timer
Switch
3
Timer
Switch
4
to Control
Board
YEL
RED
GRN
+5 DAT GND
YEL
RED
GRN
YEL
RED
GRN
(TC100-5V)
YEL
RED
GRN
Intermittent
OR Timer
Switch 1
FAN
Exhaust
FAN
Supply
AC connection
Door Safety switch
Temp
Sensor
Exhaust
FAN
motor
f)
HRV/ ERV
Hi /Low
120 Vac / 1 / 60Hz
Power Supply
Light / Switch Option
b)
Light
On /Off
Remote
0n/0ff
HV
Jumper
(remove jumper to install
master ON/OFF switch)
Ext. Interlock
OR
Ground
DC connection
Note:
Make sure, the Line must be
connected to Line and Neutral
connected to Neutral. Unit will not
function if not connected correctly.
OptionalAccessories(Not Supplied)
a) Timer Switch (TC100) (old/new)
b) WallSwitch
c) Dehumidistat
d) Time Delay Switch (TC100-120 &TC100-120P)
e) Master On/Off Switch for HRV/ERV
f) Light
g) Intermittent Switch (old/new)
Timer
Switch
4
to Control
Board
+5 DAT GND
(TC100-5V)
DAT
+5V
GND
RED
WHIT
E BLAC K
RED
WHIT
E BLAC K
DAT
+5V
GND
DAT
+5V
GND
DAT
+5V
GND
NEW
Intermittent
OR Timer
Switch 1
NEW
Timer
Switch
2
NEW
Timer
Switch
3
NEW
New
Intermittent Switch
(TC150-5V)
New
Timer Switch (TC100-5V)
+-
120 VAC / 1 / 60Hz
Power Supply
+
-
+
Hi
-
+
-
Supply
FAN
YELLOW
BLUE
WHITE
WHITE
BLUE
YELLOW
YELLOW
ORANGE
YELLOW
ORANGE
WHITE
RED
RED
BLACK
BLK
WHT
GREEN
BROWN BLUE
BLACK
GREEN
BROWN
motor
BLACK
WHITE
For built-in
Damper internal damper
connection
(forward /
reverse motor)
For external
Damper damper
connection (single
stack motor)
BLUE
WHT

GND DAT 5V
NC CNO
LO/HI
SPEED
HV INPUT
Remote
ON/OFF
(HV-High Voltage)
NO
C
NC
(These connections
must be done inside
the electrical box)
Low Voltage
+5
DAT
C
Speed
Contac
t
L0/HI
Speed
HV Input
Remote
0n/0ff
HV
NC
C
N0
HIGH VOLTAGE
Ext. Interlock
FOUR WIRE
OLDER VERSION OF CONTROLBOARD
Furnace, Fan Coil,
Heat Pump
Interlock
GND DAT 5V
For afurnace connected to a cooling system:
On some older thermostats, energizing the Rand Gterminals at the furnace has the effect of energizing Yat the
thermostat and thereby turning on the cooling system. If you identify this type of thermostat, you must use the
“Alternate Interlock Wiring”.
Wiring Diagram (cont’d) 6
Furnace /Fan-Coil /Heat Pump Interlock:
Standard Interlock Wiring
W
R
G
Y
C
TW O WIRE
heating only
Cooling
System
THERMOSTAT TERMINALS
W R G Y
TW O W IRE
!W A R N I N G !
Never connect a120 volt AC circuit to the terminals of the furnace/fan-coil/heat pump interlock (Standard Wiring).
Only use the low voltage class 2circuit.
Note: These Connections must be done inside the electrical box
LO/HI
SPEED
HV INPUT
Remote
ON/OFF
(HV-High Voltage)
NO
C
NC
(These connections
must be done inside
the electrical box)
Low Voltage
+5
DAT
C
Speed
Contac
t
L0/HI
Speed
HV Input
Remote
0n/0ff
HV
NC
C
N0
HIGH VOLTAGE
Ext. Interlock
FOUR WIRE
OLDER VERSION OF CONTROLBOARD
Furnace, Fan Coil,
Heat Pump
Interlock
GND DAT 5V
NEWER VERSION OF CONTROLBOARD
W
R
G
Y
C
TW O W IRE
heating only
Cooling
System
THERMOSTAT TERMINALS
W R G Y
TW O WIRE
YELLOW
NEWER VERSION OF CONTROLBOARD
(For RHRV-C100PNF,RERV-C100NF)
(For RHRV-C100PNF, RERV-C100NF)
Note: These Connections must be done inside the electrical box

GND DAT 5V
NC CNO
NO
C
NC
(These connections
must be done inside
the electrical box)
FOUR WIRE
GND DAT 5V
For afurnace connected to a cooling system:
On some older thermostats, energizing the Rand Gterminals at the furnace has the effect of energizing Yat the
thermostat and thereby turning on the cooling system. If you identify this type of thermostat, you must use the
“Alternate Interlock Wiring”.
Furnace /Fan-Coil /Heat Pump Interlock:
Standard Interlock Wiring
W
R
G
Y
C
TW O WIRE
heating only
Cooling
System
THERMOSTAT TERMINALS
W R G Y
TW O W IRE
!W A R N I N G !
Never connect a120 volt AC circuit to the terminals of the furnace/fan-coil/heat pump interlock (Standard Wiring).
Only use the low voltage class 2circuit.
Note: These Connections must be done inside the electrical box
NO
C
NC
(These connections
must be done inside
the electrical box)
FOUR WIRE
GND DAT 5V
SUPERIOR ECM CONTROLBOARD
W
R
G
Y
C
TW O W IRE
heating only
Cooling
System
THERMOSTAT TERMINALS
W R G Y
TW O WIRE
Note: These Connections must be done inside the electrical box
YELLOW
Temp
Sensor
Temp
Sensor
ORANGE
BLUE
Furnace, Fan Coil,
Heat Pump
Interlock
Furnace, Fan Coil,
Heat Pump
Interlock
SUPERIOR ECM CONTROLBOARD
Wiring Diagram (cont’d) 7
Ex Su
Ex Su
(For RHRV-CF100PECM)
(For RHRV-CF100PECM)

Fan-coil Unit
HRV/ERV
HRV and ERV Typical Installations 8
2Single Vents
SVE-50 and SVI-50
Shown.
“Fresh Air/ ExhaustAir
Vents Installation”
HRV/ERV (SUPERIOR)
HRV/ERV
RETURN-AIR DUCT FURNACE
Semi Ducted System
Double Vent with Extruded Aluminum Grille
DVG200 shown “Fresh Air/Exhaust Air Vent installation”
from washrooms
and kitchen
•This installation enables stale air to be drawn from the
poorest air quality areas of the home (washrooms &kitchen)
Note:
•It is recommended that the furnace blower run continuously or HRV/ERV operation be interlocked with the furnace blower
to evenly distribute the fresh air throughout the house.
• A backdraft damper is required in the exhaust air duct to prevent outdoor air from entering the unit when the Furnace /
Air handler is running and the unit is in Standby, OFF or in Recirculation.
Installation Options for High-Rise Condominium
Fully Ducted
System System
FRESH AIR
EXHAUSTEDAIR
TypicalInstallations for House
Fully Ducted System
This is a stand alone HRV/ERV system which is not
connected to a force air system. Stale air is drawn from
key areas of the home (bathroom, kitchen) while fresh
air is supplied to main living areas.
Furnace Return Air-duct Connection
DVS100
Double Vent with hood shown “Fresh Air/Exhaust Air Vent installation”
Abovethe
Snowline
Note:
•All Exhaust Vents must be installed
min. 5ft away from sidewalls.
Note: All HRV /ERV must be balanced in the field.
Fan-coilUnit
HRV/ERV
Distance
“X”
Wall Cap
Exhaust/Intake
WCE-5,WCI-5
shown
*Re -Circulation Efficiency
If distance “X” is 5ft -99.7%
“X” is 3ft -96.5%
With Fan-Coil •Fresh air from outside should be installed on
Fan-coil supply side (HRV/ERV station #2)
and HRV/ERV should be interlocked with
Fan-coil unit.
BalancingBox
(recommendedair filter for
auto balancingunit to prevent
dustbuild-upon air flow sensors)

HRV and ERV Typical Installations (cont’d) 9
HORIZONTAL
•32” clearance is recommended for cleaning of the core/servicing the unit.
(use appropriate access door size)
•Dampers are installed for horizontal installation. For vertical installation both dampers have
to be turned so they can open properly and close when there is any backdraft.
•Make sure no screw will interfere the function of the backdraft damper flaps while
installing the duct work to the HRV/ERV.
STRAPPING SYSTEM:(optional)
Allows one person installation for
vertical and horizontal installation.
VERTICAL
Note:
•After installation make sure the HRV/ERV is properly leveled. If not levelled correctly, then defrost will
not perform effectively and/or unit may frost in winter.
•Also make sure you have proper defrost on wall - controller according to HRV / ERV model no./ core
type. ( For RERV-C100NF)
UP
UP
PULL
DOW N
Strap
NOT SUPPLIED*
jtantay
12.23.11
Vibration
Spring*
Washer*
Screw*
CHAIN MOUNTING
SYSTEM: (optional)
Available for both
horizontal & vertical
installation.
Chain*
Model# ABC
RHRV-CF100PECM 22” 21” 9¼”
RERV- C100NF,RHRV-C100PNF 20” 21” 9 ¼”
A
C
B
120V Motorized Spring
Return Backdraft Damper
Backdraft
Damper
Concrete
Concrete
Wooden Joist
Bracket
(Optional)
Washer
Backdraft Damper
Screw
Flap
Flap
B
C
120V Motorized Spring
Return Backdraft Damper
A
Backdraft Damper

!C AU T I O N !
The HRV a n d all c o n d e n s a t e l ines m u s t be insta l l e d in a s p a c e w h e r e t h e t e m p e r a t u r e
is m a i n t a i n e d a b o v e t he f r e e z in g p o in t or f r e e z e p r o t e c t i o n m u s t be provi d e d .
Drain Spout
½”I.D.
Drain Pipe
“ T ”Connector
Zip Tie
to Drain
“P” Trap
HRV/ERV Steel Housing
Steel washer
Nut
Drain Spout
Drain Spout Assembly
Plastic DrainPan
Rubber washer
HRV and ERV Typical Installations (cont’d) 10
Lid
Drain Connection
During defrost cycle the HRV unit may produce some condensation and the water should flow into a nearby drain.
The HRV cabinet has pre-punched holes(two on side and one on the door) for the drain, in order to keep the drain pan
intact, hand tighten the plastic drain spout to the unit using the gasket and nuts.
For Vertical installation
Cut two sections of ½" drain pipe and connect the other ends to the drain spout then connect to “T” connector.Connect a
drain line and create aP-trap to prevent the unit from unpleasant odours from drain source.Tape or fasten base to avoid
any bends.
(For vertical installation)
Drain Pan Drain Pan
Use this drain for
horizontal installation
Note:
-For Horizontal installation,
connect only 1drain spout assembly on lid /door.
cut one ½’’drain pipe and connect one end to the drain spout and the other
end to the drain line. Don't forget to create a P-trap as shown above.
-HRV must be connected to drain.
-ERV does not required any drain. However,
we recommend to connect ERV to drain in
areas where extreme cold weather conditions are expected.
Minimum 5 Feet
Exhaust
Insulation
CAULKING GRILLE
- 3 SIDES ONLY,NOT ON BOTTOM
CAULKING WALLBOX
- CAULK WALLBOX TO
STRUCTURE ON ALL 4 SIDES
Distance
“X”
“Single VentsOnly”
Metal Clamp
Insulation
Duct
Backdraft
Damper
Grille
Intake
Insulation
Wallbox
Access Door
-Use appropriate access door size and install on proper
location for easy access to all HRV/ERV components for
routine check and maintenance of the unit.
For more info visit
http://www.reversomatic.com/HRV&ERV/Accessories
TypicalInstallations of Single Vents& Access door
*Re -Circulation Efficiency
If distance “X” is 5ft -99.7%
“X” is 3ft -96.5%
Note:
-Fresh air intake and supply duct must be totally insulated. Exhaust duct
must be 5 feet insulated from the wall. In colder climate, it is recommended
to insulate all exhaust and supply ducts.
-Check your building code for Insulation requirement

Air Flow Balancing 11
Pitot Tube Airflow Balancing
The following is amethod of field balancing an HRV/ERV using
aPitot tube advantageous in situations when flow stations are not
installed in the ductwork.Procedure should be performed with the
HRV/ERV on normal speed.
The first step is to operate all mechanical systems on most desire
speed, which have an influence on the ventilation system, i.e.the
forced air furnace or air handler if applicable. This will provide the
maximum pressure that the HRV/ERV will need to overcome, and
allow for amore accurate balancing of the unit.
Drill asmall hole in the duct (about 3/16"), three feet downstream
of any elbows or bends, and one foot upstream of any elbows or bends.
These are recommended distances but the actual installation may limit
the amount of straight duct.
The Pitot tube should be connected to amagnehelic gauge capable
of reading from 0to 0.25 in. (0-62 Pa) or other digital airflow meter.
The tube coming out of the top of the pitot is connected to the
high pressure side of the gauge/meter and the tube coming out of the
side of the pitot is connected to the low pressure or reference side
of the gauge/meter.
Insert the pitot tube into the duct; pointing the tip into the airflow. For general balancing it is sufficient to move the
pitot tube around in the duct and take an average or typical reading. Repeat this procedure in the other duct.
Determine which duct has the highest airflow (highest reading on the gauge). Then slower down that motor speed
by adjusting dial/speed controller on control board to match the lower reading from the other duct. The flows
should now be balanced. Actual airflow can be determined from the gauge/metre reading. The value read on the
gauge is called the velocity pressure and on the flow meter is called air velocity(FPM). The Pitot tube comes with
achart that will give the air flow velocity based on the velocity pressure indicated by the gauge. This velocity will
be in either feet per minute or metres per second. To determine the actual airflow, the velocity is multiplied by the
cross sectional area of the duct being measured.
Duct
AIR
FLOW
Pitot
tube
High
Pressure
Tap
Low
Pressure Tap
Magnehelic
gauge
Pitottube and gauge
NOTE:
Place the magnehelicgauge on a
level surface andadjust it to zero.
1. All the HRV/ERV’s components are in place and functioning properly.
2. All sealing of the ductwork system has been completed.
3. Set the unit to normal speed.
4. Air flows in branch to specific areas of the house should be adjusted first prior to balancing the unit.
5. After taking reading of both the stale air to the HRV/ERV duct and fresh air to the house duct, the duct with
the lowerCFM reading should be left alone while the duct with the higher airflow should be slower down to
match the lower
reading by adjusting dial/speed controller on control board(see board layout on page-4).
Return unit to appropriate fan speed for normal operation.
6.
Balancing Procedure
It is required to have balanced air flows in an HRV/ERV. The volume of air brought in from the outside
must equal the volume of air exhausted by the unit while running at normal speed. If the air flows are
not properly balanced, then:
•The HRV/ERV may not function at its maximum efficiency
• A negative or positive air pressure may occur in the house or condo
•The unitmay not defrost properly
Prior to balancing, ensure that:

Motors for NF Series
Pitot
tube
Pitot tube
Magnehelic
gauge
(option #1)
Min 3 ft straightduct
#2
#3
Remove plug
whilebalancing Remove plug
whilebalancing
Min 3 ft straightduct
#1
#4
Air Flow Balancing (cont’d)
5"
6"
DUCTDIAM.CROSSSECTIONAREA
The accuracy of the flow reading will be affected by how close to any elbows or bends the readings are taken.
Accuracy can be increased by taking an average of multiple readings as outlined in the literature with the Pitot tube.
Note: To take more accurate readings, use option #1(if possible). CFM =Opening /Cross-sectional Area(sq.ft.) xvelocity(FPM)
12
Maintenance
Regular Maintenance
1. Turn the unit off and disconnect the power supply.
2. Unlatch the door and lift the door panel towards you, hold it firmly and slide it to the left.
3. Clean the inside of the door and drain pan with adamp cloth to remove dirt and debris
that may be present.
4. Clean the filters: (twice ayear)
-Remove the filters.
- Vacuum to remove most of the dust.
-Wash with amixture of warm water and mild soap. Rinse thoroughly and shake filters
to remove water and let dry.
5. Oil/grease defrost damper levers and hinges.
6.Check air flow sensors twice a year for lint/dust accumulation. If necessary, clean the sensors
with a lintfree cloth. Take extra care while handling. make sure supply sensor goes back to
supply diffuser and exhaust sensor goes back to exhaust diffuser on same original position.
5. Check the exterior fresh air supply hood:
-Make sure there are no leaves, twigs, grass, ice or snow that could be drawn into the vent.
Partial blocking of this air vent could cause the unit to malfunction.
8. Reassemble the components, Filters and Door (The door is secured when you hear aclick.)
9. Reconnect the power and turn on the unit.
P" CFM
Ø5” Ø6”
0.010 0.004 50
0.012 0.006 60
0.016 0.008 70
0.022 0.010 80
0.027 0.013 90
0.034 0.016 100
0.041 0.020 110
0.048 0.023 120
0.057 0.027 130
0.136sq.ft.
0.196sq.ft.
P"=Velocity Pressure in inch
Note:(Option #2) for RHRV-CF100PECM only
*For this option, please use field balancing
ports.
*Do not use pitot tube to open holes in the
insulation as it may block/damage the pitot tube.
*Take 3readings on each hole and average
all 3readings for supply and same for exhaust.
*After finish balancing, plug both holes with
plastic plugs provided with the unit.

-HRV Core >remove dust using vacuum cleaner or
rinse with cold water
>Soak and rinse the HRV core in warm
soapy water
-ERV Core >remove dust using vacuum cleaner
2. Motors -Maintenance Free, permanently lubricated
Maintenance (cont’d) 13
!ATTENTION !
•Do not use cleaning solution for the HRV/ERV core
•Do not use pressure washer on the HRV/ERV core
•Do not place theHRV/ERV core in dishwasher
•Do not use bleach or chlorine
Annual Maintenance
Repeat steps 1to 5from the previous section and continue with the following steps:
1. Clean the HRV and ERV core:
-Remove filters, Loosen the core locking bracket, Remove the core, carefully grip ends of core and pull
evenly outward
!WARNING !
Electrical shock hazard. Can cause
injury or death. Before attempting to
perform any service or maintenance,
always disconnect the unit from its
power source.
3. Drain Tube and Drain Pipe -Inspect drain tube, drain pipe and “P” trap for blockage, mold or kinks. Flush with
warm soapy water and replace if worn, bent or unable to clean.
4. Clean Duct Work if Required -Wipe and vacuum the duct once every year. The duct work running to and from HRV/ERV may
accumulate dirt. You may wish to contact aheating /ventilation company to do this.
5. Cleaning the Fans -Fans may accumulate dirt causing an imbalance and/or excessive vibration on the HRV/ERV. A reduction in
the air flow may also occur.In new construction this may result within the first year due to heavy dust and may occur periodically
after that over time depending on the outdoor conditions.
•open the service door
•remove the core
•disconnect the fan motor wires
•remove the screws securing fan assembly
•pull the fan assembly out of unit
•check for any accumulation on the blades
•clean with asmall brush if necessary:
-scrub individual fan blades until clean
-vacuumand wipe
•put the components back in place
•reconnect the power supply and turn the unit back on.
PROBLEMS POSSIBLE CAUSES SOLUTION
1. Air flow is low -HRV/ERV airflow improperly
balanced (for units without built-in
Automatic ElectronicAir-balancing)
-filter clogged
-core obstructed
-exterior fresh air supply blocked
-ductwork is restricting
-power supply low (Low Voltage)
- have professional balancer or
contractor balance the unit
-remove and clean filter
-remove and clean core
-remove and clean the blockage
- inspect duct installation
-switch off the unit immediately and
call the electrician to check the
voltage
2. Senses cold air from Supply - Exhaust hood outside the house is
blocked
-HRV/ERV airflow improperly
balanced (for units without built-in
Automatic ElectronicAir-balancing)
- outdoor temperature is extremely
cold
-remove the blockage and clean the
hood
- have professional balancer or
contractor balance the unit
-placement of furniture or closed
doors is restricting the movement
of air in the home
-install aduct heater
3. Water in the bottom of HRV -drain pans, drain tube, drain pipe
and “P” trap are clogged
-check for blockage and for kinks in
line
-check connections
-make sure water drains properly
Troubleshooting

Severe Conditions
Moderate Conditions
Dry Climate
PacificConditions
High Humidity
U.S. Department of Energy climate zones map
HRVsare recommended for colder climates.ERVsare designed for warm-
humid climates with long cooling seasons.
Troubleshooting (cont’d) 14
PROBLEMS POSSIBLE CAUSES SOLUTION
4.Timer switch 20/40/60 minute/
intermittent Switch light
doesn't stayon
-loose connection
-the switch may be defective
- turn off the HRV/ERV bracker
-check connection
-replace the timer switch
-reset the main controller
5. Unit is not defrosting properly - fresh air duct maybe frozen
- HRV/ERV airflow improperly
balanced
-Temp. sensor maybe defective
-check and remove the ice
-have professional balancer or
contractor balance the unit
-replacetheTemp. sensor
6.All 3 LEDs of timer switch blinks -Control board reports error
-lost communication with main
control board
-refer to problem 4.
- check all wire connections on timer
switch and main control board
7. LED’s on the MainControl board
and the remote wall mountTimer
Switch willflash 0.5 second On
then 2 seconds Off then repeat
the cycle
NOTE: For CF model error code
is same as #8
- Exhaust fan open circuit:
a) motor burned
b) fan overheated
-replace motor
-call technician (if possible replace
fan)
8. LED’s on the Main Control board
and the remote wall mountTimer
Switch willflash 0.5 sec On/0.5
sec Off/0.5 sec On then 2sec Off,
then repeat the cycle
-damper obstructed
-exhaust fan jam /over-current
- check backdraft damper, no screw
must interfere the function of the
damper
-replace the fan
9. LED’s on theMainControl board
and the remote wall mountTimer
Switch willflash 0.5 sec On/0.5
sec Off/0.5 sec On/0.5 sec Off/
0.5 sec On, then 2seconds Off,
then repeat the cycle
NOTE: For CF model error
code is same as #10
-Supply fan open circuit:
a) motor burned
b) fan overheated
-replace motor
- call technician (if possible replace
fan)
10. LED’s on the Main Control board
and the remote wall mountTimer
Switch willflash 0.5 sec On/0.5
sec Off/0.5 sec On/0.5 sec Off/
0.5 sec On/0.5 sec Off/0.5 sec On
then 2 seconds Off, then repeat
the cycle
-damper obstructed
-Supply Fan jam /over-current
- check back-draft damper, no screw
must interfere the function of the
damper
-replace the fan
11. LED’s on the Main Control board
and the remote wall mountTimer
Switch willflash:
0.5 sec On/0.5 sec Off/
0.5 sec On/0.5 sec Off/
0.5 sec On/0.5 sec Off/
0.5 sec On/0.5 sec Off/ ts offand
0.5 sec On/0.5 sec Off/
0.5 sec On, then 2seconds Off,
then repeat the cycle
-temperature sensor failure
(both motors shuts off) -replace temperature sensor
Select HRV/ERV for yourClimate Zone