Mr. Heater F273776 Propane Auto-Changeover Two Stage Regulator Instruction Manual

Introduction

The Mr. Heater F273776 Propane Auto-Changeover Two Stage Regulator is designed for use with RVs and other applications utilizing dual propane tank hook-ups. This regulator automatically switches from a depleted primary tank to a full reserve tank, ensuring a continuous propane supply without manual intervention during operation. It features a maximum flow of 325,000 BTU and includes 2 1/4 inch inverted female flare inlets and a 3/8 inch female pipe outlet, making it easy to install.

This manual provides essential information for the safe and efficient setup, operation, and maintenance of your regulator.

Safety Information

WARNING: Propane gas is highly flammable and explosive. Improper installation, use, or maintenance can cause property damage, serious injury, or death. Always follow all local codes and regulations. Ensure all connections are leak-tested before use.

• Always turn off propane tanks before disconnecting or connecting any components.
• Ensure adequate ventilation when working with propane systems.
• Never use products that show signs of damage or wear.
• Perform leak tests regularly using a soapy water solution.

Setup and Installation

The Mr. Heater F273776 regulator is designed for straightforward installation, typically replacing an existing dual-tank regulator on an RV or trailer. It comes with pre-installed pigtails for connecting to your propane tanks.

Installation Steps:

1. Turn off Propane Supply: Ensure both propane tanks are completely turned off.
2. Disconnect Old Regulator: Carefully disconnect the pigtail hoses from the propane tanks and the main propane line from the old regulator. Remove the old regulator from its mounting bracket.
3. Prepare New Regulator: Apply new thread tape to the main propane hose connection if necessary.
4. Mount New Regulator: Secure the Mr. Heater F273776 regulator to the existing mounting bracket on your RV or trailer. Ensure it is firmly attached.
5. Connect Main Propane Line: Connect your RV's main propane line to the 3/8 inch female pipe outlet on the bottom of the new regulator. Tighten securely.
6. Connect Pigtail Hoses: Attach the pre-installed 2 1/4 inch inverted female flare pigtail hoses to each of your propane tanks. Hand-tighten, then use a wrench for a secure fit.
7. Leak Test: Slowly open the valves on both propane tanks. Apply a soapy water solution to all connections. Bubbles indicate a leak. If leaks are present, tighten connections or replace faulty components.

For a visual guide on installing a similar automatic changeover regulator, please refer to the video below:

Operating Instructions

The auto-changeover feature of the Mr. Heater F273776 regulator simplifies propane management for dual tank systems.

Initial Setup:

1. Select Primary Tank: Turn the lever on the regulator towards the full propane tank you wish to use first (your primary tank).
2. Indicator: The indicator window on the regulator will show green, confirming that propane is flowing from the selected tank.
3. Open Both Tank Valves: Ensure both the primary and reserve tank valves are fully open. This allows the regulator to automatically switch when the primary tank is depleted.

Automatic Changeover:

When the primary propane tank runs out, the regulator will automatically switch to drawing propane from the reserve tank. The indicator window will change from green to red, signaling that the primary tank is empty.

Replacing an Empty Tank:

1. Turn off Empty Tank: Close the valve on the empty propane tank.
2. Disconnect and Refill: Disconnect the empty tank and have it refilled.
3. Reconnect Full Tank: Reconnect the refilled tank to the pigtail hose.
4. Open Refilled Tank Valve: Slowly open the valve on the newly refilled tank.
5. Reset Indicator: Turn the lever on the regulator to point towards the newly refilled tank. The indicator will turn green. You can now turn the lever back to the other tank (which is now the primary) if you wish, and the indicator will remain green as long as there is propane in the selected tank.

For a visual guide on how to use a similar automatic changeover regulator, please refer to the video below:

Maintenance

Regular maintenance ensures the safe and efficient operation of your propane regulator.

1. Visual Inspection: Periodically inspect the regulator, hoses, and connections for any signs of damage, wear, cracks, or corrosion. Replace any damaged components immediately.
2. Leak Testing: Perform a leak test with soapy water solution at all connections at least once a month, or whenever a tank is replaced or reconnected.
3. Keep Clear: Ensure the regulator's vent is clear of debris, insects, or obstructions. Blocked vents can cause improper operation.
4. Protect from Elements: While the regulator is designed for outdoor use, protecting it from extreme weather conditions (e.g., heavy snow, direct prolonged sunlight) can extend its lifespan.

Troubleshooting

If you experience issues with your Mr. Heater F273776 regulator, consider the following common troubleshooting steps:

No Gas Flow:

• Tank Valves: Ensure both propane tank valves are fully open.
• Empty Tank: Check the regulator's indicator. If it's red, the selected tank is empty. Switch to the other tank or replace the empty one.
• Excess Flow Valve: If a tank valve was opened too quickly, the excess flow valve inside the tank might have activated, restricting gas flow. Close the tank valve, wait 30 seconds, and then open it very slowly.
• Blockage: Check hoses and connections for any kinks or blockages.

Indicator Not Changing:

• Tank Level: The indicator only changes when the selected tank is depleted. Ensure the tank is actually empty.
• Lever Position: Make sure the lever is correctly pointing to the tank you are drawing from.
• Regulator Malfunction: If the indicator does not change despite an empty tank and correct lever position, the regulator may be faulty and require replacement.

Gas Leak:

• Smell Gas: If you smell gas, immediately turn off both propane tank valves.
• Leak Test: Perform a soapy water leak test on all connections. Tighten any leaking connections. If a leak persists, replace the faulty component or the entire regulator.

Specifications

• Model: F273776
• Brand: Mr. Heater
• Type: Propane Auto-Changeover Two Stage Regulator
• Inlets: 2 x 1/4 in. inverted female flare
• Outlet: 1 x 3/8 in. female pipe
• Max Flow: 325,000 BTU
• Item Weight: 2.6 Pounds
• Item Dimensions (LxWxH): 9.12 x 6.25 x 4 inches
• Material: Other (typically metal alloy with plastic components)
• Included Components: Mr. Heater F273776: Propane Auto-Changeover Two Stage Regulator - Replaces F273766

Image: Side view of the Mr. Heater F273776 Propane Auto-Changeover Two Stage Regulator, showing the inlet and outlet connections.

Image: Front view of the Mr. Heater F273776 Propane Auto-Changeover Two Stage Regulator, highlighting the changeover lever and indicator window.

Image: The Mr. Heater F273776 regulator installed on an RV, connected to two propane tanks.

Warranty and Support

For warranty information, technical support, or replacement parts, please contact Mr. Heater customer service directly. Refer to the product packaging or the official Mr. Heater website for the most current contact details and warranty policy.