Honeywell VR8215 Series

The Honeywell VR8215S,T is a Direct Ignition Combination Gas Control designed for use in gas-fired appliances. It integrates a switch and a pressure regulator, optimized for direct ignition systems.

Function Description:

The VR8215S,T controls the flow of gas to the main burner in gas-fired appliances. It is specifically designed for direct ignition applications, where an igniter directly lights the main burner without a standing pilot. The control includes a pressure regulator to maintain a consistent gas pressure to the burner and an on-off switch for manual gas flow control. It is suitable for both natural gas and LP gas applications, with conversion kits available for switching between gas types. The control is designed to operate in conjunction with a direct ignition module (e.g., S87B, S89C,G,J/S890C,G,J Hot Surface Ignition Control) and a thermostat or controller.

Important Technical Specifications:

Capacity: Up to 150 ft³/hr (natural gas) at 1 in. wc pressure drop.
Body Pattern: Straight through.
Inlet/Outlet Size: 1/2 x 1/2 inches.
Electrical Ratings:
- Voltage and Frequency: 24 Vac, 60 Hz.
- Current Draw: 0.5A.
Regulation Range:
- AGA Certified Minimum Regulation for Natural Gas: 15 ft³/hr.
- AGA Certified Maximum Regulation for Natural Gas: 200 ft³/hr.
- Minimum regulation for LP gas is 30,000 Btuh.
Pressure Regulator Specification (in. wc):
- Natural Gas (Standard/Slow):
  - Nominal Inlet Pressure Range: 5.0-7.0
  - Factory Set Nominal Outlet Pressure: 3.5
  - Setting Range: 2.5-3.5
- LP Gas (Standard/Slow):
  - Nominal Inlet Pressure Range: 12.0-14.0
  - Factory Set Nominal Outlet Pressure: 10.0
  - Setting Range: 8.0-12.0
Ambient Temperature Range (Suffix S, T): -40°F to 175°F (-40°C to +79°C).
Pressure Regulator Type:
- Suffix S: Standard
- Suffix T: Slow Opening
Approvals: CSA Design Certificate.
Natural-LP Gas Conversion Kits:
- Natural Gas to LP: Kit 396221
- LP to Natural Gas: Kit 396222

Usage Features:

Installation Flexibility: Can be mounted in any direction, but gas flow must be in the direction of the arrow on the bottom of the control.
Gas Type Conversion: Controls with standard and slow-opening regulators (suffix S or T) can be converted between natural gas and LP gas using specific conversion kits. This requires changing the main orifices and following appliance manufacturer specifications.
On-Off Switch: The electronic on-off switch is typically shipped in the ON position. It prevents main gas flow when OFF and permits flow (under thermostat/module control) when ON.
Sediment Trap: Installation of a sediment trap in the gas supply line is required to prevent contamination of the gas control.
Pipe Connections: Use new, properly reamed pipe or tubing. Apply pipe compound only to the pipe, leaving two end threads bare. Do not use Teflon tape.
Pressure Adjustment: The pressure regulator can be adjusted using a screwdriver after removing the adjustment cap screw.
Safety Lockout Check: For slow-opening controls (VR8215T), a safety lockout time check is required to ensure proper system function, ensuring the ignition control safety lockout time exceeds 8.5 seconds.
Safety Shutdown Performance: Regular testing of the safety shutdown performance is crucial, involving turning off the gas supply and observing the ignition sequence and module lockout.
Homeowner Instructions: Provides clear steps for turning the appliance ON and OFF, including warnings about gas leaks and physical damage to the control.

Maintenance Features:

Preventive Maintenance: Regular preventive maintenance is crucial, especially in commercial cooking, agricultural, and industrial applications due to high cycling rates (100,000 to 200,000 cycles per year) and exposure to harsh environments.
Maintenance Frequency: Determined by application-specific factors such as cycling frequency (monthly for high-cycle appliances), intermittent use (before and after seasonal use), consequence of unexpected shutdown (more often for critical systems), and environmental conditions (more often for dusty, wet, or corrosive environments).
Checkout Procedure: The maintenance program should include regular checkout of the control as outlined in the Startup and Checkout section, and the control system as described in the appliance manufacturer literature.
Replacement Criteria: The system should be replaced if it does not perform properly, has operated for more than 200,000 cycles, or shows signs of being wet.
No User-Serviceable Parts: The gas control contains no replaceable components. Disassembly, repair, or cleaning by unauthorized personnel can damage the control and lead to gas leakage.
Troubleshooting: If the main burner does not come on with a call for heat, check the on-off switch position, thermostat setting, and voltage across the quick connect terminals. Replace the gas control if proper voltage is present but the burner does not ignite.
Environmental Protection: To prevent malfunction and damage, the control should be protected from steam cleaning, high humidity, dripping water, corrosive chemicals, dust, grease accumulation, and excessive heat. Proper insulation, shielding, and air circulation are recommended in high-temperature environments. Covers should be used in dusty or greasy environments.