Rinnai T Series Split Type Wall Mounted Air Conditioner Installation Manual

Models and Refrigerant

This manual covers the Rinnai T Series Split Type Wall Mounted Air Conditioner. The models include system, indoor, and outdoor unit designations such as HSNRT25B, HINRT25B, HONRT25B, and others up to HSNRT80B, HINRT80B, HONRT80B. The appliance uses R32 refrigerant.

Diagrams show the Rinnai T Series indoor unit with a remote control, and the outdoor unit. Model numbers for indoor, outdoor, and system are listed. The refrigerant type is R32.

Safety icons include a warning triangle with an exclamation mark inside (⚠️), and a label indicating REFRIGERANT R32.

Warnings and Important Information

Always comply with the following precautions to avoid dangerous situations and ensure optimum performance. Failure to read and follow instructions can result in equipment malfunction, property damage, personal injury, or death.

• DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in personal injury or death.
• WARNINGS: Indicates a potentially hazardous situation which, if not avoided, could result in personal injury or death.
• CAUTIONS: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury or damage to the appliance. It may also be used to alert against unsafe practices.
• IMPORTANT: Immediately report any damage or discrepancies to the Supplier. Inspect the appliance upon receipt for evidence of rough handling. Ensure correct labeling for gas and electrical supply. Damaged or incorrect appliances MUST NOT be installed or operated.

Regulatory Compliance: This appliance must be installed in accordance with Manufacturer's Installation Instructions, Current AS/NZS 3000, AS/NZS 5141, and Local Regulations and Municipal Building Codes including local OH&S requirements. Installation, maintenance, and removal must be performed ONLY by an Authorised Person.

Refrigerant: This appliance uses R32 refrigerant, a flammable gas class 2.2. Handling must be done by a qualified refrigeration mechanic with an appropriate license. WARNING: Risk of fire/flammable material. If refrigerant leaks with an external ignition source, ignition is possible.

Handling: The appliance is heavy; use two people or a mechanical lifting device. Take care when opening or unpacking.

Electrical Safety: DO NOT modify electrical wiring. Ensure proper earthing. Use a standard circuit breaker with magnetic tripping and heat tripping functions. Connect all wiring tightly. DO NOT supply power until all wiring and tubing are completed.

Installation Location: Select a secure, accessible location with proper ventilation. Avoid unstable surfaces or areas prone to falling. DO NOT install the outdoor unit where noise may cause nuisance or where it will be exposed to sea wind (salt spray).

Operation: DO NOT let the air conditioner run with doors/windows open for extended periods. DO NOT cover the appliance. DO NOT touch with wet hands. DO NOT insert objects into air inlets/outlets. DO NOT place heating appliances nearby without sufficient ventilation. Turn off main power before cleaning. DO NOT use solvents or harsh detergents; clean with a soft, damp cloth. NEVER touch metal parts when removing the air filter. DO NOT leave flammable materials nearby. If unusual noise, smell, or smoke occurs, turn off power and contact a service agent. DO NOT operate if submerged in water. This appliance is not intended for use by persons with reduced capabilities unless supervised. Children should not play with the appliance. The system is designed for consumer comfort, not controlled atmospheres (e.g., computer rooms). DO NOT block air inlets/outlets. DO NOT drink condensate water. DO NOT expose people, animals, or plants to direct discharge. DO NOT mix batteries or use leaking batteries.

Operation Range Limitations: Tables specify acceptable room and outdoor temperatures for Cool, Heat, and Dry modes.

Installation General

Contents Checklist

Items provided with the unit include: Indoor unit (x1), Remote controller (x1), Remote control wall bracket (x1), AAA battery (x2), Drain pipe (x1), Outdoor unit (x1), Brass nut (small) (x2), Rubber vibration damper (x4), Brass nut (large) (x1), Drain plug (x2), Putty (x1), Tape (x2), Operation manual (x1), Installation manual (x1), Energy label (x1).

Appliance Components

Diagrams illustrate the indoor unit (parts 1-6) and outdoor unit (parts 7-11), showing:

• 1. Indoor unit air inlet
• 2. Filter (behind front access panel)
• 3. Manual ON/OFF (Auto) override button (behind front access panel)
• 4. Indoor unit air outlet (with louvres for airflow direction)
• 5. Remote control
• 6. Signal receiver window and temperature display
• 7. Refrigerant pipes, electrical cable(s) (covered with binding tape)
• 8. Condensate drain hose (covered with binding tape)
• 9. Refrigerant entry (for service/installer use)
• 10. Outdoor unit air inlet (rear & left side)
• 11. Outdoor unit air discharge and protective grille (front)

Weights & Dimensions

Tables provide weight (kg) for indoor and outdoor units and detailed dimensions (A-I in mm) for both indoor and outdoor units across different models (HSNRT25B to HSNRT80B).

Location

Indoor Unit

• Locate away from heat or steam.
• Ensure accessibility for service and replacement.
• Ensure condensate can be drained away.
• Mount securely.
• Maintain specified clearances.

Outdoor Unit

• Minimize exposure to direct sunlight and strong wind.
• Mount securely.
• Ensure noise and airflow do not cause nuisance.
• Ensure no obstructions in the airflow path.
• Ensure accessibility for service and replacement.
• Do not place animals and plants near the air discharge.
• Maintain specified clearances.

Pipe Length & Elevation Limits

A table details pipe sizes (gas and liquid), chargeless length, minimum/maximum pipe length (X), maximum height difference (Y), and additional refrigerant required per meter for various models (HSNRT25B to HSNRT80B). Diagrams show the relative positions of the indoor and outdoor units with pipe length (X) and height difference (Y) indicated.

The outdoor unit is supplied charged for pipe lengths of 2 to 10 meters. Removal or addition of refrigerant for lengths outside this range must be by best practice.

Installation

Indoor Unit

Wall Mounting Plate

The wall must support the unit's weight and pipe-work. Fix the mounting plate level and firmly. CAUTION: DO NOT install where electrical wiring or conduits are located.

A diagram shows the wall mounting plate with dimensions A-E labeled for different indoor unit models (HINRT25B to HINRT70B/HINRT80B).

Wall Penetration

Drill a Ø70mm wall penetration with a 2° to 4° fall to the outside wall. A diagram illustrates this penetration.

Drain Pipe

Connect the drain pipe to the indoor unit's outlet and bind the joint with PVC insulation tape (not supplied). Diagrams show the connection process. A note clarifies that the drain pipe is dual-handed and can be installed on the left or right, with instructions to unclasp the hose, unscrew the plug from the alternate discharge point, clip the hose, and screw the plug into the unused point.

Electrical Connections

WARNING: Must be installed by authorised persons according to AS/NZS 3000 and local codes. Ensure proper wiring to prevent malfunction, fire, or electric shock. The unit must be earthed.

Steps include opening the front panel, removing the wiring cover, inserting electrical cables, securing them with a cable clip, connecting to terminals, and closing the panel. Diagrams show the indoor unit's internal wiring layout and terminal connections (L, N, S).

Wall Installation

Remove foam shipping blocks from the rear of the indoor unit. Position piping as shown. Tape refrigerant pipes, electric cable(s), and drain hose together, ensuring the drain hose is at the lowest side. Diagrams illustrate the routing and connections, including notes on dual-handed drain pipe installation.

Hang the indoor unit on the mounting plate, ensuring hooks are seated. Push the unit towards the wall and hook it onto the lower fixing hook. Diagrams show the unit being hung and secured.

CAUTION: Ensure no leakage from the drain pipe connection and that it has a continuous fall. Ensure wall penetrations are weatherproofed.

Outdoor Unit

Electrical Connections

WARNING: Must be installed by authorised persons according to AS/NZS 3000 and local codes. Ensure proper wiring.

Steps include removing the wiring cover, securing electrical and power cables with a clip, connecting cables as shown, and re-installing the cover. Diagrams show the outdoor unit's wiring compartment and terminal connections to mains power and the indoor unit.

DRED Connection (optional)

The appliance has a DRED interface with 4-wire terminal or RJ45 socket options. WARNING: Installation by authorised persons according to codes. Ensure proper wiring.

Steps involve removing the wiring cover, connecting power feed to the terminal block, and connecting the communication cable to the DRED interface. Diagrams show the DRED interface connections.

Condensate Drain Installation

A condensate drainage point is provided in the base of the outdoor unit. Insert the supplied barbed elbow into the drainage point and fit a drainage hose (installer to supply). IMPORTANT: Drainage must conform with local regulations and OH&S requirements.

Refrigerant Pipes

Flaring

IMPORTANT: The main cause of refrigerant leakage is faulty flaring. Ensure piping complies with AS/NZS 1571:1995 and AS/NZS 4041:2006. Examine pipework and fittings for cleanliness. Clean unsealed tubing to remove residue. Metal filings must not be left in pipework. Pipes must be clean, burr-free, and not crushed or kinked. Use suitable lubricant for flare connections.

Connecting Vapour / Liquid Pipes To Indoor & Outdoor Units

Align pipe centers. Tighten flare nuts with fingers, then with a spanner and torque wrench. CAUTION: Both pipes must be properly insulated to prevent heat loss and condensation drips.

A table lists pipe dimensions (metric/imperial) and corresponding torque wrench settings (18 Nm to 75 Nm). Diagrams illustrate the connection points for indoor and outdoor units, showing the use of wrenches and torque wrenches, and the importance of insulation.

Air Purging & Leakage Test

WARNING: DO NOT mix substances other than R32 into the refrigerant system. Ventilate immediately if leaks occur. Recover refrigerants; do not release into the environment. Use a vacuum pump exclusively for R32.

CAUTION: Purge air and check for leaks after piping. Use a hex socket (3/16") to operate service valves. Tighten all pipe joints with a torque wrench.

Evacuation Vacuum Method / Leak Test

Steps involve removing valve caps, connecting a charge hose to the low-pressure gauge, opening the gauge valve, running the vacuum pump for at least 15 minutes, closing the valve, turning off the pump, waiting for pressure to stabilize (-100 kPa / -76 cmHg), disconnecting the hose, replacing caps, opening vapour and liquid valves, testing the system through heating/cooling cycles, and testing for leaks. Both valve caps MUST be tight.

A diagram shows the setup with a manifold gauge set, vacuum pump, vapour valve, service port, and liquid valve.

Adding Refrigerant for Longer Line Length

Additional refrigerant can be added during evacuation or operation. CAUTION: Be careful not to overcharge; monitor scales closely. Do not discharge refrigerant into the atmosphere during installation, repair, or service.

Final Checklist

This checklist is for completion by an Authorised Person only.

A table lists check items (e.g., indoor unit security, gas leakage inspection, insulation completion, drainage security, correct wiring, specification adherence, clear inlets/outlets, open stop valves, R32 pipe design, leak test, air purging, appliance testing, user awareness) and the potential consequences if not checked (e.g., falling, no cooling, water leakage, electric shock, fire, incorrect operation).

If any item is answered 'no', it must be checked and corrected before appliance hand-over.

Contacts

Contact information for Rinnai Australia Pty Ltd and Rinnai New Zealand Ltd is provided, including addresses, phone numbers, fax numbers, and website URLs (www.rinnai.com.au, www.rinnai.co.nz). Social media links for Rinnai New Zealand (youtube.com/rinnainz, facebook.com/rinnainz) are also listed. Rinnai has a trained service and spare parts network. Servicing is recommended every 3 years. Rinnai reserves the right to change specifications without notice.