Honeywell S87J1034 Ignition Module

Direct Spark Ignition Module, 24Vac, Natural or LP Gas, 0.8 Second Flame Failure Response Time, 0.8 Second Flame Failure Re-ignition Time, Single Rod, 21 Second Ignition Trial Time, 1 Ignition Trial to Lockout, 30 Second Prepurge, Internal High Voltage Spark Generator

Honeywell S87J1034 Direct Spark Ignition Module – 24V, Natural & LP Gas

The Honeywell S87J1034 Ignition Module is a reliable, low-voltage, solid-state direct spark ignition control designed for gas-fired furnaces, boilers, and heating appliances. Engineered for dependable performance, this module supports both natural gas and LP (liquid propane) systems and features an internal high-voltage spark generator for consistent ignition.

With fast flame sensing and built-in safety timing, the S87J1034 ensures safe system operation by responding quickly to flame failure and locking out when ignition is not proven. Its compact design and proven Honeywell reliability make it an ideal OEM replacement or upgrade for compatible HVAC equipment.

Key Features & Benefits:

• Direct spark ignition module for gas-fired heating equipment

• 24 Vac operation with solid-state reliability

• Compatible with natural gas and LP gas systems

• Internal high-voltage spark generator for consistent ignition

• Single-rod flame sensing for accurate flame detection

• Fast safety response with 0.8-second flame failure response and re-ignition time

• 30-second minimum pre-purge for safe combustion chamber clearing

• 21-second ignition trial time with 1 trial to lockout

Technical Specifications:

• Part Number: S87J1034

• Application: Gas-fired furnaces, boilers, and heating appliances

• Ignition Type: Direct Spark

• Fuel Type: Natural Gas, LPG

• Flame Sense: Single rod (Typical igniter-sensor: Q347A)

• Ignition Trials to Lockout: 1

• Pre-Purge Time: 30 seconds (minimum)

• Lockout Timing: 21 seconds

• Flame Failure Response Time: 0.8 sec @ 5.0 µA

• Maximum Valve Load: 2A

• Operating Voltage: 24–25 Vac

• Frequency: 60 Hz

• Dimensions: 5.25 in H x 4.06 in W x 1.94 in D

• Ambient Operating Temperature: -40°F to 175°F (-40°C to 79°C)

The Honeywell S87J1034 Ignition Module delivers safe, dependable ignition control and is compatible with common gas valves such as VR8205 and VR8305. Designed for long-term performance, it’s an excellent choice for HVAC professionals seeking a trusted OEM-quality ignition solution.

Order today to restore reliable ignition and safe operation to your gas-fired heating system.