NordicStove Toby Oil Controller with Thermostat Zoom

NordicStove Toby Oil Controller 3.0 Min/25.0 Max, Thermostat

100925T

Achieve precise oil flow control and automatic thermostat adjustment with the Toby Oil Controller, designed for efficient heating in the NordicStove 40,000 BTU series.

Status: In Stock

US$560.00

Description

Description

The NordicStove Toby Oil Controller with Thermostat, part number 100925T, is a mechanical fuel flow regulator paired with a non-electric thermostatic control device designed for use with the NordicStove 400 series freestanding oil-fired room heater.

The Toby DVR5 oil controller regulates fuel delivery to the vaporizing burner through a variable-position dosage slot on a metering fuel tube, providing adjustable flame output across the calibrated operating range between the minimum setting of 3.0 and the maximum setting of 25.0 for the 400 series. At maximum setting — the sixth and final index on the valve — the 400 series heater operates at an input rating of 54,075 BTU per hour and delivers a proximal heat output of 40,000 BTU.

The integrated thermostat automatically modulates fuel flow between low and high burn settings in response to ambient room temperature without requiring electrical power or batteries.

The thermostat component consists of a fluid-filled copper sensing bulb, a coiled connecting tube, an adjustment knob, and an actuation lever. As the sensing bulb detects ambient temperature changes, the fluid inside expands or contracts, causing the actuation lever to travel up or down over the thermostat fuel metering pin on the oil controller, modulating fuel flow to maintain the operator-selected room temperature.

The connecting tube can be gently uncoiled to position the copper sensing bulb on the wall near the stove at the appropriate height and distance for accurate room temperature sensing. The oil controller also incorporates a flooded-bowl safety reset lever, a fuel filter screen to prevent foreign matter from entering the regulator, and an over-heat shut-off device that stops fuel flow if the regulator body reaches an unsafe temperature.

The unit is factory-calibrated for Number 1 grade heating oil and is compatible with Number 2 heating oil, automotive diesel, marine diesel, and kerosene with appropriate burn setting adjustment.

What's Included: One NordicStove Toby DVR5 oil controller calibrated for the 400 series heater with minimum flow rate setting of 3.0 and maximum flow rate setting of 25.0, paired with a non-electric thermostat assembly consisting of a fluid-filled copper sensing bulb, coiled connecting tube, adjustment knob, and actuation lever.

Installation Limits: This oil controller and thermostat assembly is calibrated specifically for the NordicStove 400 series heater and must not be used on NordicStove models of other series. The thermostat operates without electrical power or batteries. Whenever the oil controller output settings are adjusted, the thermostat must be recalibrated to match the new output range. The stove must be level and all burner rings properly installed before the controller is adjusted or the stove is operated.

Compatibility: Compatible with NordicStove 400 series freestanding natural draft oil-fired room heaters using the Toby DVR5 oil control system. Accepts Number 1 heating oil, Number 2 heating oil, automotive diesel, marine diesel, and kerosene.

Features

Features

  • Mechanical Toby DVR5 oil controller factory-calibrated for the NordicStove 400 series with a minimum flow rate setting of 3.0 and maximum flow rate setting of 25.0
  • Supports the full 40,000 BTU proximal heat output of the NordicStove 400 series at its maximum input rating of 54,075 BTU per hour
  • Non-electric thermostat assembly automatically modulates fuel delivery between low and high burn settings in response to ambient room temperature without requiring power or batteries
  • Fluid-filled copper sensing bulb with coiled connecting tube mounts on the wall near the stove for accurate room temperature detection and thermostat actuation
  • Flooded-bowl safety reset lever, inlet fuel filter screen, and over-heat shut-off device provide layered protection for the regulator and burner during all operating conditions
  • Factory-calibrated for Number 1 grade heating oil with compatibility for Number 2 heating oil, automotive diesel, marine diesel, and kerosene with appropriate burn setting adjustment

Specifications

Specifications

Part Number: 100925T
Brand: NordicStove
Controller Model: Toby DVR5
Minimum Flow Rate Setting: 3.0
Maximum Flow Rate Setting: 25.0
Compatible Stove Series: NordicStove 400 Series
Thermostat Type: Non-Electric, Fluid-Filled Copper Bulb Thermostat
Fuel Compatibility: Number 1 and Number 2 Heating Oil, Automotive Diesel, Marine Diesel, Kerosene

 

The NordicStove 100925T Toby Oil Controller 3.0 Min/25.0 Max Thermostat delivers fully mechanical, non-electric fuel flow control and automatic room temperature-based modulation for the NordicStove 400 series oil-fired room heater, combining a calibrated Toby DVR5 oil controller with an integrated fluid-filled thermostat assembly for reliable, power-free heating management across the full 40,000 BTU output range of the 400 series.

 

Support

Support

 
Product FAQ

What heat output does the NordicStove 400 series produce at the maximum controller setting?

At the maximum flow rate setting of 25.0 — the sixth and final index position on the Toby DVR5 valve — the NordicStove 400 series operates at an input rating of 54,075 BTU per hour and delivers a proximal heat output of 40,000 BTU. This output level makes the 400 series suitable for heating larger cabins, tents, and residential spaces that exceed the capacity of the smaller 68, 130, and 250 series models. Reaching full output requires that the high burn adjustment screws are correctly calibrated for the fuel in use and that adequate chimney draft is maintained throughout the operating range.

How does the non-electric thermostat on the 100925T modulate fuel flow?

The thermostat uses a fluid-filled copper sensing bulb connected via a coiled tube to an actuation lever mounted on the oil controller. When the ambient room temperature rises above the selected setpoint, the fluid in the bulb expands, pushing the actuation lever downward over the thermostat fuel metering pin, which reduces fuel flow and lowers the burn rate toward the low setting. When the room temperature drops below the setpoint, the fluid contracts, the lever rises, and the controller allows increased fuel flow, raising the burn rate toward the high setting. This fully mechanical process requires no electrical power or batteries at any stage of operation.

Where should the thermostat sensing bulb be positioned for accurate temperature control on the 400 series?

The copper sensing bulb should be mounted on the wall near the stove at a position that accurately reflects the ambient room temperature being targeted. The coiled connecting tube can be gently uncoiled to extend the bulb away from the oil controller body and place it at the desired height and horizontal distance from the stove. The exact mounting height above the floor and distance from the stove varies by installation and may require adjustment during the initial setup period to achieve the desired room temperature response from the thermostat actuation lever.

Why must the thermostat be recalibrated when the 100925T controller settings are adjusted?

The thermostat actuation lever is calibrated to modulate between the specific low and high burn positions established by the oil controller's current adjustment settings. When the controller's high or low burn adjustment screws are changed, the fuel flow rates at those positions shift, meaning the thermostat lever now operates across a different actual fuel delivery range than it was previously set for. Recalibrating the thermostat after any controller adjustment ensures that its temperature response behavior continues to correspond correctly to the actual low and high output levels of the adjusted controller.

What fuels are compatible with the NordicStove 100925T oil controller?

The 100925T is factory-calibrated for Number 1 grade heating oil and is compatible with Number 2 heating oil, automotive diesel, marine diesel, and kerosene. When any fuel other than Number 1 heating oil is used, the high and low burn adjustment screws may require recalibration, and the thermostat must be recalibrated to match the adjusted output range. Crankcase oil, waste oil, gasoline, white gas, and any mixture containing gasoline must never be used under any circumstances, as these create severe fire and combustion hazards in a vaporizing burner system.

What is the correct burn setting adjustment sequence for the 100925T controller?

The high burn setting must always be adjusted before the low burn setting on the Toby DVR5 oil controller. Two screws affect fuel flow at the high setting — the high adjusting screw and the high limit screw — and both must be correctly set before any adjustment is made to the low burn position. Before making any adjustments, the chimney must be drafting properly, the fuel tank and filter must be providing unobstructed flow to the stove, and the stove must be confirmed level with all burner rings properly installed. Once controller adjustments are complete, the thermostat must be recalibrated to match the new low and high output positions before returning the stove to thermostat-controlled operation.

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