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Summary of Contents for Rinnai BBMVRF03
- Page 1 REFRIGERANT R410A VRF Multi Split Type Air Conditioner - Branch Box Installation Manual...
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Page 2: Table Of Contents
Contents Safety Precautions ....................Safety Instructions....................Components ......................Component List ....................Accessories ......................Introduction....................... Diagrams ......................Specifications ...................... Installation ........................ Installation Location Selection................Installation Methods .................... Installation Steps ....................Disassembly ......................Troubleshooting......................Troubleshooting.................... -
Page 3: Safety Precautions
Safety Precautions Safety Instructions The safety labels in this manual comply with standards both inside and outside of China. These safety labels are given different definitions and used to mark different levels of danger. Please thoroughly read and fully understand the following safety marks (the description of signs and text) and follow the relevant precautions to avoid damage to the health or property of the users and others. -
Page 4: Components
Components Component List Name Description Top cover Opened for repair Connecting IDU and ODU communication wires Communication wire knockout hole for ODU Communication wire knockout hole for IDU with built-in electronic expansion valve Main pipe joint (liquid-side) Connecting the liquid-side refrigerant pipe of the ODU or branch joint Main pipe joint (gas-side) Connecting the gas-side refrigerant pipe of the ODU or branch joint Branch pipe joint (liquid-side) -
Page 5: Accessories
Quantity Specifications Description type Installation/Maintenance manual Installation Manual Φ 6.35 mm Main pipe (liquid-side) nut BBMVRF03 Φ 9.52 mm Pipe nut Accessory kit Φ 9.52 mm Main pipe (liquid-side) nut BBMVRF04, BBMVRF05, BBMVRF06 For numbering the electronic Number sticker 270 × 75 mm... -
Page 6: Introduction
Introduction Diagrams Specifications Branch box model Parameter BBMVRF03 BBMVRF04 BBMVRF05 BBMVRF06 SB2403 Color Appearance Hot-dip galvanized steel plate Material Length A Dimensions Width B Height C Weight without packaging 10.8 Weight with packaging 15.9 11.0 13.4 14.0 Diameter of electronic expansion valve port * Note: 1/2/3/4/5 indicate the number of 5-2.0 + 1-2.4... -
Page 7: Installation
Installation Installation Location Selection The branch box integrates multiple electronic expansion valves and connects the refrigerant pipes of multiple IDUs and ODUs. It produces noticeable refrigerant flow noise during operation. Therefore, the branch box must be installed in a concealed location, away from working and living areas. Installation precautions for the branch box: •... - Page 8 2) Ceiling mounting The branch box generates refrigerant noise during operation, which can impact comfort. When you choose to install it in an indoor ceiling space, make sure to install it in areas less sensitive to noise, such as hallways or bathrooms. NOTE The branch box should not be installed in bedrooms or areas where people frequently stay.
- Page 9 Allowed installation orientations NOTE The electronic expansion valve inside the branch box must not be installed upside down (an inverted position results in valve flow regulation or valve closure issues due to gravity). × √ Orientation 1: leftward connection: Orientation 2: upward connection: √...
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Page 10: Installation Steps
Installation Steps Step 1: Locate the box After confirming the installation position of the branch box (front/rear/left/right spacing must meet pipe connection and maintenance requirements), use a marker to mark the positions of the lifting lug holes. NOTE During marking, use a spirit level to ensure that the upper/lower or left/right lifting lug holes are on the same straight line. - Page 11 Branch pipe (liquid) (liquid) Main pipe (gas) Pipe connector of branch boxes (mm) Number Corresponding branch pipe sticker connector BBMVRF03 BBMVRF04 BBMVRF05 BBMVRF06 Branch pipe (liquid/gas side) connector 1 Φ 6.35/Φ 12.7 Φ 6.35/Φ 12.7 Φ 6.35/Φ 12.7 Φ 6.35/Φ 12.7 Branch pipe (liquid/gas side) connector 2 Φ...
- Page 12 Allowable length an ence for refrigerant piping Branch Box IDU 6 IDU 2 IDU 1 IDU 3 IDU 4 IDU5 Maximum allowable length Piping length Between Branch box and IDU 1~IDU 6 b, c, d, e, f, g ≤ 15 m (Liquid side or gas side ) Total piping length Between ODU and Branch box (Branch joint)
- Page 13 Step 4: Connect the extension cable of the electronic expansion valve coil 1) Take out the ③ number stickers from the accessory kit, and attach the number stickers (E1-E6, indicating connection to IDUs 1-6 of the branch box) to both ends of the ① extension cable of the electronic expansion valve coil.
- Page 14 Step 5: Connect the communication wires 1) Take out the ③ number stickers from the accessory kit, and attach the number stickers (E1-E6, indicating connection to IDUs 1-6 of the branch box) to both ends of the ① IDUs 1/2/3 communication wires. NOTE The adhesive side of the stickers should be pressed firmly onto the cable after both ends are folded.
- Page 15 Step 6:Power supply cable connection Main control board ① The power supply terminal of the indoor unit is fixed on the main control board, the power supply cable is connected to the power supply terminal labeled "CN1" on the main control board. The main control board logos "L"...
- Page 16 Step 7: Perform test run After completing refrigerant charging (when calculating the refrigerant amount to be added on site, include the required refrigerant for the IDU liquid side branch pipe connecting to the branch box. For calculation methods, refer to the relevant section in the IDU installation manual), power on the unit for a test run.
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Page 17: Disassembly
Disassembly WARNING Please wait 10 minutes after all power supplies are disconnected before beginning disassembly. Do not perform electrical work in an energized state. Otherwise, serious personal injury may occur. Step Description Remove the four screws on the top Step 1 cover of the branch box. - Page 18 Step Description After the electronic expansion valve coil Step 6 is removed, if the valve body is damaged, use a welding device to replace the valve body (during welding, make sure to continuously cool the valve body). If the valve body does not need replacement, contact the manufacturer to request assembly replacement.
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Page 19: Troubleshooting
Troubleshooting Troubleshooting Fault Possible cause Troubleshooting 1. The IDU runs poorly (the air supply The refrigerant pipes cross over Refer to the pipe and cable crossover issue troubleshooting temperature is approximate to with communication wires and method in "Step 6: Perform test run". indoor temperature) or frosting or electronic expansion valve coil extension cables. - Page 20 Monday to Friday, 8.00 am to 5.00 pm EST. *Cost of a local call may be higher from a mobile phone. (National calls from public phones in Australia are free.) For further information visit www.rinnai.com.au or email enquiry@rinnai.com.au innai has a Service and Spare Parts network with...
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