WINTEMP WM-27kW Plus (Model WM27V) Tankless Electric Water Heater User Manual

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your WINTEMP WM-27kW Plus Tankless Electric Water Heater. Please read all instructions carefully before installation and use. Retain this manual for future reference.

2. Important Safety Information

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.

• Ensure the unit meets your installation requirements. A 200 Amp household service is recommended for the WM-27kW Plus model.
• The WM-27kW Plus (WM27V) is rated at 27kW (240V) with a maximum current of 113A. It requires 3 x 40 Amp double-pole breakers and 3 sets of 8 AWG wiring for installation.
• Water connections require 3/4" NPT.
• Always consult a qualified electrician and plumber before purchasing and installing this unit to ensure compliance with local codes and safety standards.
• The product features multiple safety protections, including leakage protection, overheat protection, and dry-fire protection, and is ETL certified.

3. Unboxing and Package Contents

Carefully unpack the water heater and all accessories. Inspect for any shipping damage. If any components are missing or damaged, contact customer support immediately.

Figure 3.1: Contents of the WINTEMP WM-27kW Plus tankless water heater package, including the unit, operation and installation manual, positioning template, quick start guide, wall mounting bracket, inlet filter screen, rubber gaskets, plastic wall anchors, and mounting screws.

4. Installation Requirements and Guide

Proper installation is crucial for the safe and efficient operation of your tankless water heater. This unit features a compact wall-mounted design, measuring 15.9" (H) x 13" (W) x 4.2" (D).

4.1 Electrical Requirements

The WM-27kW Plus model requires specific electrical configurations. Refer to the diagram below and consult a qualified electrician.

• Heating Input: 27 kW
• Input Voltage: 240 V
• Max. Amperage Draw: 112.5 A
• Breakers Required: 3 x 40 Amp double-pole breakers
• Cable Required: 3 x 8 AWG wiring

Figure 4.1: Detailed diagram showing the electrical wiring requirements for the WINTEMP WM-27kW Plus tankless water heater, including breaker, wire gauge, and voltage specifications.

4.2 Plumbing Requirements

• Water Connection: 3/4" NPT
• Ensure proper water-electricity separation during installation to prevent scale buildup and corrosion.

4.3 General Installation Steps

For a comprehensive installation guide, please refer to the official installation video and the included operation and installation manual.

5. Operating Instructions

Your WINTEMP tankless water heater is designed for ease of use and efficient hot water delivery.

5.1 Temperature Control

• The unit features an LED touch dial control for temperature adjustment.
• Temperature can be set between 86°F and 140°F.
• The internal cast-aluminum heating system ensures efficient heating.

Figure 5.1: Image showcasing the LED touch dial control panel on the WINTEMP tankless water heater, highlighting knob temperature control, touchscreen adjustment, and digital display.

5.2 Smart WiFi Control

Control your water heater remotely using the dedicated app, compatible with Smart Home and Tuya Smart platforms.

• Monitor real-time water flow.
• Track water and electricity usage.
• Adjust temperature settings from your mobile device.

Figure 5.2: Screenshot of the WINTEMP mobile application demonstrating smart control and monitoring capabilities for electricity and water consumption.

5.3 Auto Flow Control

The advanced flow control technology automatically maintains water temperature, ensuring maximum efficiency and consistent hot water. It delivers up to 6.5 GPM of stable hot water output. If demand exceeds capacity, the system will slightly reduce flow to maintain temperature stability.

6. Maintenance

Regular maintenance ensures the longevity and efficiency of your WINTEMP tankless water heater.

• The water-electricity separation design helps prevent scale buildup and corrosion, contributing to long-term operating efficiency.
• Periodically check water connections for leaks.
• Clean the inlet filter screen as needed to maintain optimal water flow.
• No specific routine maintenance is required for the internal heating system due to its design.

7. Troubleshooting

If you encounter issues with your WINTEMP tankless water heater, refer to the following general troubleshooting steps. For more detailed guidance, consult the full operation manual or contact customer support.

• No Hot Water: Check power supply, circuit breakers, and ensure the unit is turned on. Verify water flow.
• Inconsistent Temperature: Ensure adequate water pressure and flow. Check for error codes on the display.
• Low Water Flow: Inspect the inlet filter screen for clogs and clean if necessary.
• Error Codes: Refer to the detailed manual for specific error code meanings and solutions.

8. Product Specifications

9. Warranty and Support

Your WINTEMP WM-27kW Plus Tankless Electric Water Heater is backed by a 2-year limited manufacturer warranty. WINTEMP also provides long-term professional technical support to ensure a worry-free experience.

For warranty claims, technical assistance, or any questions regarding your product, please contact WINTEMP customer support through the official website or your purchase platform.