1. Product Overview
The APUS 190,000 BTU Outdoor Tankless Water Heater is designed to provide a continuous supply of hot water for your home. This high-efficiency unit operates on propane gas, delivering 8.1 gallons per minute (GPM) of instant hot water. It features smart temperature control via an app or wired remote, and is built for outdoor installation with robust all-weather protection.
Figure 1: APUS 190,000 BTU Outdoor Tankless Water Heater with included remote control.
Key Features:
- Whole-Home Hot Water: Delivers 190,000 BTU and 8.1 GPM, supporting up to 3 showers and 2 faucets simultaneously.
- Smart Temperature Control: Adjust water temperature remotely via a dedicated app or wired controller (95°F–149°F) with ±1°F accuracy.
- Compact Outdoor-Friendly Design: Space-saving dimensions (22.48 × 15.51 × 6.54 inches) for easy outdoor installation.
- Advanced Heat Exchanger: Features 100% oxygen-free copper for 20% energy savings and enhanced durability.
- All-Weather Performance: Wind-resistant (10-level wind rating) and electric anti-freeze protection for reliable operation in extreme conditions.
- Complete Safety Protection: Includes freeze, overheat, and flame failure safeguards.
2. Safety Information
Read and understand all safety instructions before installing, operating, or performing maintenance on this appliance. Failure to follow these instructions could result in property damage, personal injury, or death.
- Professional Installation: Installation of this tankless water heater requires knowledge of plumbing, gas, and electrical systems. It is highly recommended that installation be performed by a qualified professional.
- Outdoor Use Only: This unit is designed exclusively for outdoor installation. Do not install indoors.
- Gas Type: Ensure the unit matches your gas supply type (Propane Gas). Incorrect gas type can lead to hazardous conditions.
- Ventilation: Proper ventilation is crucial for safe operation. Ensure the unit is installed in an area with adequate airflow.
- Water Pressure: Maintain water supply pressure within the specified range (0.1-1.0 MPa).
- Anti-Freeze Protection: The unit includes electric anti-freeze protection. However, in extremely cold climates, additional measures may be necessary to prevent freezing.
3. Setup and Installation
This section provides an overview of the installation process. Refer to the included 'Installation and Owner's Manual' for detailed step-by-step instructions and diagrams.
3.1 Unboxing and Components
Carefully unpack the water heater and all accessories. Verify that all components listed in your manual are present and undamaged.
- Tankless Water Heater x1
- Installation and Owner's Manual x1
- Controller (Optional) x1
- Controller cable (Optional) x1
- Expandable screw x1
- Wall anchor x6
- Mounting Screw x4
- Screw (Optional) x2
- Closed Circuit Terminal (Optional) x2
3.2 Mounting the Unit
Select a suitable outdoor location for mounting. Use the provided installation guide card to mark drilling points accurately. Secure the unit firmly to a sturdy wall using the supplied mounting hardware.
Figure 2: Example of outdoor installation.
3.3 Plumbing and Gas Connections
Connect the water inlet (cold water), water outlet (hot water), and propane gas inlet. The unit features standard 3/4" water and gas connections. Ensure all connections are secure and leak-free. A professional plumber should handle these connections to ensure compliance with local codes and safety standards.
Figure 3: Connection points for water and gas.
3.4 Electrical Connection
Connect the unit to a 120V AC power source. Ensure the power supply meets the unit's requirements.
3.5 Remote Control Connection
If using the wired remote controller, connect it to the designated port on the water heater. The controller allows for direct temperature adjustments and monitoring.
3.6 Installation Video Guide
For a visual guide on the installation process, please refer to the official installation video below:
Video: Official installation guide for the APUS 190,000 BTU Tankless Water Heater.
4. Operation
Once installed and connected, the APUS tankless water heater is ready for operation. It provides instant hot water on demand, eliminating the need for a storage tank.
4.1 Temperature Control
You can adjust the water temperature between 95°F and 149°F using two methods:
- Wired Remote Controller: Use the physical controller to set your desired temperature.
- Smartphone App: Download the dedicated APUS app to control the water heater remotely via Wi-Fi. This allows for convenient adjustments and monitoring from anywhere.
Figure 4: Dual control options for temperature adjustment.
4.2 Instant Hot Water Delivery
The unit activates automatically when hot water is demanded, providing a continuous flow at your set temperature. The advanced system ensures stable temperature output, even when multiple outlets are in use.
Figure 5: Consistent hot water experience.
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your APUS tankless water heater. Always disconnect power and gas supply before performing any maintenance.
- Annual Inspection: Have a qualified technician inspect the unit annually, including gas connections, water lines, and the heat exchanger.
- Flushing: Periodically flush the heat exchanger to remove mineral buildup, especially in areas with hard water. Refer to your owner's manual for detailed flushing procedures.
- Exterior Cleaning: Keep the exterior of the unit clean and free from debris. Do not obstruct the air intake or exhaust vents.
- Anti-Freeze System: The built-in electric anti-freeze protection activates automatically. Ensure the unit remains powered during cold weather to allow this system to function.
6. Troubleshooting
If you encounter issues with your water heater, consult the troubleshooting section in your 'Installation and Owner's Manual' for specific solutions. Below are some general tips:
- No Hot Water: Check gas supply, water supply, and electrical connections. Ensure the unit is powered on and the remote controller is set to a desired temperature.
- Fluctuating Temperature: Verify adequate water flow. Low water pressure can cause temperature inconsistencies.
- Error Codes: If an error code appears on the controller, refer to the manual for its meaning and recommended actions.
- Reduced Flow: Mineral buildup can restrict water flow. Consider flushing the unit as part of routine maintenance.
For complex issues or if troubleshooting steps do not resolve the problem, contact a qualified service technician or APUS customer support.
7. Specifications
Detailed technical specifications for the APUS 190,000 BTU Outdoor Tankless Water Heater (Model AP-AWH-W26LPG).
| Feature | Specification |
|---|---|
| Brand | APUS |
| Model Number | AP-AWH-W26LPG |
| Product Dimensions (W x H x D) | 15.51" x 22.48" x 6.54" |
| Item Weight | 47.4 pounds |
| Power Source | Liquid Propane |
| Heat Output | 190,000 British Thermal Units (BTU) |
| Maximum Flow Rate | 8.1 Gallons Per Minute (GPM) |
| Minimum Flow Rate | 0.79 GPM |
| Temperature Setting Range | 95°F – 149°F |
| Voltage | 120 Volts (AC) |
| Water Supply Pressure | 0.1-1.0 MPa |
| Water Inlet Connection | NPT 3/4" |
| Water Outlet Connection | NPT 3/4" |
| Gas Inlet Connection | NPT 3/4" |
| Mounting Type | Wall |
| Special Features | APP Control & Remote Control, Advanced Heat Exchanger, Low Water Pressure Startup, Multi-Point Hot Water Supply, Smart Seasonal Technology, Electric Anti-Freeze Protection |
Figure 6: All-weather protection for reliable outdoor performance.
8. Warranty and Support
APUS is committed to providing high-quality products and customer satisfaction.
8.1 Warranty Information
This APUS tankless water heater comes with a 2-year full warranty on all hot water heater components. This warranty covers defects in materials and workmanship under normal use and service.
Please retain your proof of purchase for warranty claims. For full warranty terms and conditions, refer to the 'Installation and Owner's Manual'.
8.2 Customer Support
If you have any questions, require technical assistance, or need to make a warranty claim, please contact APUS customer support. Contact information can be found in your 'Installation and Owner's Manual' or on the official APUS website.