Blue Ridge BM12M22CNS User manual

Installation Manual
Low-wall air handler
Model
BM12M22CNS
IMPORTANT NOTE:
Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.

Table of Contents
Installation Manual
Accessories.................................................................. 04
Safety Precautions................................................. 05
Installation Summary - Indoor Unit.......... 06
Indoor Unit Installation ..................................... 07
Indoor Unit Parts.......................................................... 07
Indoor Unit Installation Instructions ................... 08
Drainpipe Installation ......................................... 12
Refrigerant Piping Connection .................... 14
Note on Pipe Length .......................................... 14
Connection Instructions .................................... 16
Wiring............................................................................... 17
1
2
3
4
5
6
7
LN

1
Accessories
Page 4 Revised 5/14/2020
Accessories
The air conditioning system comes with the following accessories. Use all of the installation parts and
accessories to install the air conditioner. Improper installation may result in water leakage, electrical
shock and re, or equipment failure.
Name Name Shape Quantity
Refrigeration Fittings Soundproof / insulation sheath (some models) 2
Installation Fittings Hook 2
Drainpipe Fittings
(for cooling & heating)
Drain joint (some models) 1
Seal ring (some models) 1
EMC Magnetic Ring
(some models)
Magnetic ring
(wrap the electric wires S1 & S2 ( P & Q & E )
around the magnetic ring twice)
1
Magnetic ring
(Hitch on the connective cable between the
indoor unit and outdoor unit after installation.)
1
Others
Owner‘s manual 1
Installation manual 1
Refrigerant line adaptor - 1/2" to 5/8"
NOTE: Pipe size may dier from appliance
to appliance. Use the refrigerant adapter if
needed always at the condenser.
1
(on some
models)
Refrigerant line adaptor - 1/4" to 3/8"
NOTE: Pipe size may dier from appliance
to appliance. Use the refrigerant adapter if
needed always at the condenser.
1
(on some
models)
Refrigerant line adaptor - 3/8" to 1/2"
NOTE: Pipe size may dier from appliance
to appliance. Use the refrigerant adapter if
needed always at the condenser.
1
(on some
models)
Red short connected wire (Applied to the W/L
pin of outdoor unit terminal block be short-
circuited.)
1
(on some
models)
Optional accessories
• There are two types of remote controls: wired and wireless.
• Select a remote controller based on customer preferences and requirements and install in an
appropriate place.
• Refer to catalogues and technical literature for guidance on selecting a suitable remote
controller.
S1&S2(P&Q&E)

2
WARNING
WARNING
CAUTION
Safety
Precautions
Page 5 
Revised 5/14/2020
Note about Fluorinated Gasses
1. This air-conditioning unit contains uorinated gasses. For specic information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2. Installation, service, maintenance and repair of this unit must be performed by a certied
technician.
3. Product uninstallation and recycling must be performed by a certied technician.
4. If the system has a leak-detection system installed, it must be checked for leaks at least every 12
months.
5. When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
Safety Precautions
Read Safety Precautions Before Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classied as either a WARNING or CAUTION.
Failure to observe a warning may result in death. The appliance must be
installed in accordance with national regulations.
Failure to observe a caution may result in injury or equipment damage.
• Carefully read the Safety Precautions before installation.
• In commercial environments, such as restaurant kitchens, server rooms, etc., the use of
specially designed air-conditioning units is highly recommended.
• Only trained and certied technicians should install, repair and service this air
conditioning unit.
Improper installation may result in electrical shock, short circuit, leaks, re or other damage
to the equipment and personal property.
• Strictly follow the installation instructions set forth in this manual.
Improper installation may result in electrical shock, short circuit, leaks, re or other damage
to the equipment.
• Before you install the unit, consider strong winds, typhoons and earthquakes that might
aect your unit and locate it accordingly. Failure to do so could cause the equipment to fail.
• After installation, ensure there are no refrigerant leaks and that the unit is operating
properly. Refrigerant is both toxic and ammable and poses a serious health and safety risk.

3
Installation Summary - Indoor Unit
1 2 3
5
LN
Install the indoor unit
(Page 7)
Install the outdoor unit
(Separate Manual)
Install the drainpipe
(Page 12)
Connect the refrigerant
pipes (Page 14)
Connect the wires
(Page 17)
INSTALLATION ORDER
4
Installation
Summary
Page 6 Revised 5/14/2020

4
Indoor Unit Installation
Drain hose
Refrigerant connecting
pipe
Display panel
Air inlet (with air filter in it)
Air flow louver (at air outlet)
Air flow louver (at air outlet)
Indoor Unit Parts
Safety Precautions
Fig. 4.1
Indoor Unit
Installation
Page 7 
Revised 5/14/2020
WARNING
• Securely install the indoor unit on a
structure that can sustain its weight. If
the structure is too weak, the unit may
fall and cause personal injury, unit and
property damage, or death.
• DO NOT install the indoor unit in a
bathroom or laundry room as excessive
moisture can short the unit and corrode
the wiring.
• Install the indoor and outdoor units,
cables and wires at least 3 feet from
televisions or radios to prevent static
or image distortion. Depending on the
appliances, a 3 foot distance may not be
sucient.
• If the indoor unit is installed on metal, it
must be electrically grounded.
CAUTION

Indoor Unit Installation Instructions
Fig. 4.2
Indoor Unit
Installation
Page 8 Revised 5/14/2020
Step 1: Select installation location
The indoor unit should be installed in a location
that meets the following requirements:
Enough room for installation and maintenance.
Enough room for the connecting pipe and
drainpipe.
The ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
The air inlet and outlet are not impeded.
The airow can ll the entire room.
There is no direct radiation from heaters.
NOTE: Panel installation should be performed
after piping and wiring have been completed.
DO NOT install the unit in the following
locations:
Areas with oil drilling or fracking
Coastal areas with high salt content in the
air
Areas with caustic gases in the air, such as
near hot springs
Areas with power uctuations, such as
factories
Enclosed spaces, such as cabinets
Areas with strong electromagnetic waves
Areas that store ammable materials or gas
Rooms with high humidity, such as
bathrooms or laundry rooms
CAUTION
RECOMMENDED DISTANCES BETWEEN THE INDOOR UNIT
The distance between the mounted indoor unit should meet the specications illustrated in the
following diagram. (See Fig. 4.2)
≥
≥ ≥
≥

Fig. 4.3
Indoor Unit
Installation
Page 9 
Revised 5/14/2020
Hook

Fig. 4.4
Fig. 4.5
Indoor Unit
Installation
Page 10 Revised 5/14/2020
Step 2: Installing the main body
• Ax the hook with a tapping screw onto the wall.
• Hang the indoor unit on the hook.
(The bottom of body can touch the oor or remain suspended, but the body must be installed
vertically.)
Hook
Tapping
screw
Washer

Fig. 4.6
Fig. 4.8
Fig. 4.7
Indoor Unit
Installation
Page 11 
Revised 5/14/2020
Step 3: Taking the indoor unit apart to connect
the pipes
1. Open the front panel
Slide the two stoppers on the left and right
sides inward until they click.
Step 4: Network address set (some models
(Only unit of 18000Btu/h has the function that
Network address set.)
Every air-conditioner in network has only one
network address to distinguish each other.
Address code of air-conditioner in LAN is set by
code switches S1 & S2 on the Main Control Board
of the indoor unit, and the set range is 0-63.
2. Remove the front panel
Remove the string.
Allow the front panel to fall forward and
remove it.
3. Remove the face plate
Remove the four screws. (See Fig.4.7)
Open the bottom of the face plate at a 30-de-
gree angle. Lift the top of the face plate. (See
Fig.4.8)
NOTE: All the gures in this manual are for
demonstration purposes only. The air con-
ditioner you have purchased may be slightly
dierent in design, though similar in shape.
Toggle switch set Network
address
code
S1 S2
00~15
16~31
32~47
48~63
Table 4.1

Fig. 5.1 Fig. 5.3
Fig. 5.2
Drainpipe
Installation
Page 12 Revised 5/14/2020
5
Drainpipe Installation
The drainpipe is used to drain water away from
the unit. Improper installation may cause unit
and property damage.
• Insulate all piping to prevent condensation,
which could lead to water damage.
• If the drainpipe is bent or installed
incorrectly, water may leak and cause a
water-level switch malfunction.
• In HEAT mode, the outdoor unit will
discharge water. Ensure that the drain
hose is placed in an appropriate area to
avoid water damage and slippage.
• DO NOT pull the drainpipe forcefully. This
could disconnect it.
CAUTION
NOTE ON PURCHASING PIPES
NOTE ON DRAINPIPE INSTALLATION
Installation requires either 5/16" inner
diameter polyethylene tube or PVC drain
pipe sold separately.
• When using an extended drainpipe,
tighten the indoor connection with an
additional protection tube. This prevents
it from pulling loose.
• The drainpipe should slope downward
at a gradient of at least 1/100 to prevent
water from owing back into the air
conditioner.
• Incorrect installation could cause water to
ow back into the unit and ood.
Indoor Drainpipe Installation
Install the drainpipe as illustrated in Figure 5.2.
1. Cover the drainpipe with heat insulation to
prevent condensation and leakage.
2. Attach the mouth of the drain hose to the
unit’s outlet pipe. Sheath the mouth of the
hose and clip it rmly with a pipe clasp.
(See Fig 5.1)
Drainpipe
connecting port
Drain hose
Pipe clasp Insulation
Lean over 1/100
NOTE: When connecting multiple drainpipes,
install the pipes as illustrated in Fig 5.3.
≥
4”

Fig. 5.4
Drainpipe
Installation
Page 13 
Revised 5/14/2020
3. Using a 2.5” hole saw drill, drill a hole in the
wall. Make sure that the hole is drilled at a
slight downward angle, so that the outdoor
end of the hole is lower than the indoor end
by about 0.5”. This will ensure proper water
drainage (See Fig. 5.4). Place the protective
wall cu in the hole. This protects the edges
of the hole and will help seal it once you
nish installation.
4. Pass the drain hose through the wall
hole. Make sure the water drains to a
safe location where it will not cause water
damage or a slipping hazard.
NOTE: When drilling the hole, make sure to
avoid wires, plumbing, and other sensitive
components.
NOTE: The drainpipe outlet should be at
least 1.9” above the ground. If it touches the
ground, the unit may become blocked and
malfunction. If you discharge the water directly
into a sewer, make sure that the drain has a U
or S pipe to catch odors that might otherwise
come back into the house.
Wall
Indoor
Outdoor
≈ 0.5 inch

6
Refrigerant Piping Connection
Note on Pipe Length
Maximum Length and Drop Height of Refrigerant Piping per Unit Model
Connection Instructions – Refrigerant Piping
The length of refrigerant piping will aect the performance and energy eciency of the unit. Nominal
eciency is tested on units with a pipe length of 16.5ft. In North America, standard pipe length is 25’.
A minimum pipe run of 10 feet is required to minimize vibration & excessive noise. Refer to the table
below for specications on the maximum length and drop height of piping
Step 1: Cut pipes
When preparing refrigerant pipes, take extra care to cut and are them properly. This will ensure
ecient operation and minimize the need for future maintenance.
1. Measure the distance between the indoor and outdoor units.
Refrigerant Piping
Connection
Page 14 Revised 5/14/2020
Model Max Length Max Drop Height Add'l Refrigerant
12k 82 feet 33 feet 0.16/ foot

2. Using a pipe cutter, cut the pipe a little longer
than the measured distance.
3. Make sure that the pipe is cut at a perfect 90°
angle. Refer to Fig. 6.1 for bad cut examples.
Oblique RoughW
arped
90
°
Page 15 
Revised 5/14/2020
Fig 6.1
Fig 6.3
Fig 6.5
Fig 6.4
Fig 6.2
Be extra careful not to damage, dent, or deform
the pipe while cutting. This will drastically
reduce the heating eciency of the unit.
DO NOT DEFORM PIPE
WHILE CUTTING
Step 2: Remove burrs
Burrs can aect the air-tight seal of refrigerant piping
connection. They must be completely removed.
1. Hold the pipe at a downward angle to prevent
burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove all
burrs from the cut section of the pipe.
Step 3: Flare pipe ends
Proper aring is essential to achieve an airtight seal.
1. After removing burrs from cut pipe, seal the
ends with PVC tape to prevent foreign materials
from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place are nuts on both ends of pipe. Make sure
they are facing in the right direction, because
you can’t put them on or change their direction
after aring. See Fig. 6.3.
Pipe
Reamer
Point down
Flare nut
Copper pipe
4. Remove PVC tape from ends of pipe when
ready to perform aring work.
5. Clamp are form on the end of the pipe. The end
of the pipe must extend beyond the edge of the
are form in accordance with the dimensions
shown in the table below.
Table 7.1: Torque chart and aring guide
Pipe
gauge
Flaring
torque
Flare dimension
(A) (Unit: Inch)
Flare shape
Min. Max.
1/4" 14 ft/ lbs 0.33 0.34
3/8" 18 ft/ lbs 0.52 0.53
1/2" 26 ft/ lbs 0.64 0.65
5/8" 34 ft/ lbs 0.76 0.78
R0.4~0.8
45 °±2
90 °
±4
A
Flare form
Pipe
A

Instructions for Connecting Piping to
Indoor Unit
1. Align the center of the two pipes that you will
connect. See Fig. 6.7.
2. Tighten the are nut as tightly as possible by
hand.
3. Using a spanner, grip the nut on the unit
tubing.
4. While rmly gripping the nut on the unit
tubing, use a torque wrench to tighten the
are nut according to the torque values in the
Torque Requirements table below. Loosen
the aring nut slightly, then tighten again.
Note: Use of an approved refrigerant sealant is
recommended for all are joint connections.
Refrigerant Piping
Connection
Page 16 Revised 5/14/2020
6. Place aring tool onto the form.
7. Turn the handle of the aring tool clockwise until
the pipe is fully ared.
8. Remove the aring tool and are form, then
inspect the end of the pipe for cracks and even
aring.
Step 4: Connect pipes
When connecting refrigerant pipes, be careful not
to use excessive torque or to deform the piping in
any way. You should rst connect the low-pressure
pipe, then the high-pressure pipe.
MINIMUM BEND RADIUS
When bending connective refrigerant piping,
the minimum bending radius is 4in. See
Fig.6.6.
≥4inRadius
Fig 6.6
Fig 6.8
Indoor unit tubing Flare nutPipe
Fig 6.7
Torque Requirements
Outer Diameter of Pipe (inch) Tightening Torque (ft/lb) Add. Tightening Torque (ft/lb)
1/4" 11 ft/ lb 12 ft/ lb
3/8" 18 ft/ lb 20 ft/ lb
1/2" 25 ft/ lb 26 ft/ lb
5/8" 33 ft/ lb 35 ft/ lb
Excessive force can break the nut or damage the refrigerant piping. You must not exceed torque
requirements shown in the table above.
DO NOT USE EXCESSIVE TORQUE

Wiring
Page 17 
Revised 5/14/2020
NOTE ON Electrical Disconnect
You must use a dedicated circuit, with an
approved electrical disconnect switch to
provide power at the outside unit. The inside
unit wires connect to the outside unit, not to
power circuits indoors.
7
Wiring
NOTE: This diagram is for explanation purposes
only. Your machine may be slightly dierent.
1. All wiring must comply with local and national electrical codes, regulations and must be
installed by a licensed electrician.
2. All electrical connections must be made according to the Electrical Connection Diagram
located on the panels of the indoor and outdoor units.
3. If there is a serious safety issue with the power supply, stop work immediately. Explain
your reasoning to the client, and refuse to install the unit until the safety issue is properly
resolved.
4. Power voltage should be within 90-110% of rated voltage. Insucient power supply can
cause malfunction, electrical shock, or re.
5. Power from your panel must be on a dedicated circuit with the correct amperage breaker,
run through an approved electrical disconnect box mounted on an exterior wall near the
condenser.
6. Make sure to properly ground the air
conditioner.
7. Every wire must be rmly connected.
Loose wiring can cause the terminal
to overheat, resulting in product
malfunction and possible re.
8. Do not let wires touch or rest against
refrigerant tubing, the compressor, or
any moving parts within the unit.
9. If the unit has an auxiliary electric heater,
it must be installed at least 40" away
from any combustible materials.
10. To avoid getting an electric shock, never
touch the electrical components soon after
the power supply has been turned o.
11. Make sure that you do not cross
your electrical wiring with your signal
wiring. This may cause distortion and
interference.
BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS
Indoor unit
Outdoor unit
(purchased seperately)
Disconnect switch
(purchased seperately)
Outdoor unit power wires Indoor & Outdoor
connective wires
WARNING
BEFORE PERFORMING ANY ELECTRICAL OR
WIRING WORK, TURN OFF THE MAIN POWER
TO THE SYSTEM.

Wiring
Page 18 Revised 5/14/2020
Indoor Unit Wiring
1. Prepare the cable for connection.
a. Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
about 5.9” of the wire.
b. Strip the insulation from the ends of the
wires.
c. Using a wire crimper, crimp the u-lugs to
the ends of the wires.
2. Remove the cover of the electric control box
on your indoor unit.
1
Control bo
x
Installation bearer
of sensor device
3. Connect the u-lugs to the terminals.
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the u-lug
of each wire to its corresponding terminal.
Refer to the Wiring Diagram located on the
cover of the electric control box.
4. Clamp down the cable with the cable clamp.
5. Insulate unused wires with electrical tape.
Keep them away from any electrical or metal
parts.
6. Reinstall the cover of the electric control box.

Page 19 
Revised 5/14/2020
Install Outdoor Unit
(see separate manual)
When you have nished installing all indoor air handlers, proceed to installation of the outdoor unit.
Complete installation instructions and startup procedures are given in the outdoor unit installation
manual. Copies are always available at AlpineHomeAir.com by searching your unit's model number
and scrolling to Documents.

The design and specications are subject to change without
prior notice for product improvement.
AlpineHomeAir.com