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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 flare nut as tightly as possible by 

hand.

3.  Using a spanner, grip the nut on the unit 

tubing.

4.  While firmly gripping the nut on the unit 

tubing, use a torque wrench to tighten the 

flare nut according to the torque values in the 

Torque Requirements table below. Loosen 

the flaring nut slightly, then tighten again.

Note: Use of an approved refrigerant sealant is 

recommended for all flare joint connections.

Refrigerant Piping 

Connection

Page 16 

Revised 5/14/2020

6.  Place flaring tool onto the form.
7.  Turn the handle of the flaring tool clockwise until 

the pipe is fully flared.

8.  Remove the flaring tool and flare form, then 

inspect the end of the pipe for cracks and even 

flaring.

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 first 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.

≥4in

Radius

Fig 6.6

Fig 6.8

Indoor unit tubing

Flare nut

Pipe

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

Содержание BM12M22CNS

Страница 1: ...lation 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 ref...

Страница 2: ......

Страница 3: ...ns 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 P...

Страница 4: ...Installation manual 1 Refrigerant line adaptor 1 2 to 5 8 NOTE Pipe size may differ from appliance to appliance Use the refrigerant adapter if needed always at the condenser 1 on some models Refriger...

Страница 5: ...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 befo...

Страница 6: ...5 L N 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 Instal...

Страница 7: ...stain 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 mo...

Страница 8: ...ion 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...

Страница 9: ...Fig 4 3 Indoor Unit Installation Page 9 Revised 5 14 2020 Hook...

Страница 10: ...ed 5 14 2020 Step 2 Installing the main body Affix the hook with a tapping screw onto the wall Hang the indoor unit on the hook The bottom of body can touch the floor or remain suspended but the body...

Страница 11: ...de 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 fa...

Страница 12: ...res 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 fr...

Страница 13: ...seal it once you finish 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 drill...

Страница 14: ...ngth is 25 A minimum pipe run of 10 feet is required to minimize vibration excessive noise Refer to the table below for specifications on the maximum length and drop height of piping Step 1 Cut pipes...

Страница 15: ...pe ends Proper flaring 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 w...

Страница 16: ...wise until the pipe is fully flared 8 Remove the flaring tool and flare form then inspect the end of the pipe for cracks and even flaring Step 4 Connect pipes When connecting refrigerant pipes be care...

Страница 17: ...e 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...

Страница 18: ...of the electric control box on your indoor unit 1 Control box Installation bearer of sensor device 3 Connect the u lugs to the terminals Match the wire colors labels with the labels on the terminal bl...

Страница 19: ...lling 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...

Страница 20: ...The design and specifications are subject to change without prior notice for product improvement AlpineHomeAir com...

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