S963B1128 | Honeywell Manual Potentiometer 135 Ohm Series 90 Outlet Box Mount
Honeywell · Sensors & Instrumentation
Description The Honeywell S963B1128 is a 135-ohm manual potentiometer designed for use with Series 90 control systems. It simulates heating, cooling, and economizer signals for testing and calibration purposes, providing accurate voltage ramp outputs and reliable manual adjustment within HVAC and economizer applications. Technical Specifications Condition New/Never Used Surplus Brand Honeywell Category HVAC Controls Part Number S963B1128 Subcategory Manual Potentiometer Resistance Value 135 Ohm System Compatibility Series 90 Control Systems Function Manual Control / Signal Simulation Voltage Output Range <2 VDC (min) to 16.6 VDC (max) for Heat/Cool Ramp Economizer Signal Range 4.0 VDC to 4.5 VDC (equivalent to 45°F to 69°F / 7°C to 21°C at C7046 Sensor) Included Components Two Potentiometers and Resistor Assembly in Test Box Mounting Type Vertical, for 2 × 4 in. Outlet Box (≥1-3/4 in. deep) Terminal Connections Four Color-Coded Test Lead Wires with Alligator Clips Leadwire Identification Color bands correspond to W973 terminal numbers Operation Type Manual, Adjustable Scale Type Open/Close Scale Application Simulates Thermostat and Economizer Functions Housing Material Metal Test Box Enclosure Dimensions (H × W × D) 4-1/4 in × 2-3/4 in × 2-5/16 in Weight 1.92 oz (0.12 lbs / 0.054 kg) Compliance UL Recognized, Industrial Grade Construction Information About S963B1128 The S963B1128 is part of Honeywell’s Series 90 line of precision control accessories, specifically engineered for calibration and system testing. It simulates the HEAT and COOL ramp signals of a T7067 Dual Set Point Thermostat, as well as the economizer low limit function for W973 controllers. Using dual potentiometers and an internal resistor assembly, it generates controlled DC voltage ramps—ranging from under 2 VDC to 16.6 VDC—to replicate thermostat outputs and verify proper actuator response. The unit also produces an economizer low limit voltage range of 4.0 to 4.5 VDC to simulate specific discharge air temperatures. Compact and easy to mount, the S963B1128 features color-coded test leads with alligator clips for quick connection to W973 terminal points, making it a reliable tool for maintenance and diagnostics in HVAC systems. Key Features: Precise 135-Ohm Resistance: Ensures stable and accurate manual control signal simulation for Series 90 systems. Dual Potentiometer Design: Provides independent adjustment for heat/cool ramp and economizer functions. Voltage Signal Simulation: Delivers output voltages from <2 VDC to 16.6 VDC for testing thermostats and actuators. Economizer Testing Capability: Generates 4.0–4.5 VDC output corresponding to 45°F–69°F discharge sensor simulation. Convenient Test Leads: Equipped with four color-coded alligator clip wires for fast terminal connection. Compact Outlet Box Mount: Designed for vertical mounting on standard 2×4-inch outlet boxes for field or lab use. Durable Metal Housing: Protects internal components from damage and ensures long service life. Easy Field Calibration: Enables HVAC technicians to simulate control conditions during troubleshooting or setup. Broad System Compatibility: Works with Honeywell W973 and other Series 90 controllers. Lightweight and Portable: Weighs less than 2 ounces for convenient field use and storage. The S963B1128 delivers the reliability and precision required for testing and calibration in Series 90 HVAC systems, allowing accurate simulation of thermostat and economizer control signals in maintenance and diagnostic operations.
Brand: Honeywell · Category: Sensors & Instrumentation
Key features
- Precise 135-Ohm Resistance: Ensures stable and accurate manual control signal simulation for Series 90 systems.
- Dual Potentiometer Design: Provides independent adjustment for heat/cool ramp and economizer functions.
- Voltage Signal Simulation: Delivers output voltages from <2 VDC to 16.6 VDC for testing thermostats and actuators.
- Economizer Testing Capability: Generates 4.0–4.5 VDC output corresponding to 45°F–69°F discharge sensor simulation.
- Convenient Test Leads: Equipped with four color-coded alligator clip wires for fast terminal connection.
- Compact Outlet Box Mount: Designed for vertical mounting on standard 2×4-inch outlet boxes for field or lab use.
- Durable Metal Housing: Protects internal components from damage and ensures long service life.
- Easy Field Calibration: Enables HVAC technicians to simulate control conditions during troubleshooting or setup.
- Broad System Compatibility: Works with Honeywell W973 and other Series 90 controllers.
- Lightweight and Portable: Weighs less than 2 ounces for convenient field use and storage.
Specifications
| Manufacturer part number | S963B1128 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | S963B1128 |
| Subcategory | Manual Potentiometer |
| Resistance Value | 135 Ohm |
| System Compatibility | Series 90 Control Systems |
| Function | Manual Control / Signal Simulation |
| Voltage Output Range | <2 VDC (min) to 16.6 VDC (max) for Heat/Cool Ramp |
| Economizer Signal Range | 4.0 VDC to 4.5 VDC (equivalent to 45°F to 69°F / 7°C to 21°C at C7046 Sensor) |
| Included Components | Two Potentiometers and Resistor Assembly in Test Box |
| Mounting Type | Vertical, for 2 × 4 in. Outlet Box (≥1-3/4 in. deep) |
| Terminal Connections | Four Color-Coded Test Lead Wires with Alligator Clips |
| Leadwire Identification | Color bands correspond to W973 terminal numbers |
| Operation Type | Manual, Adjustable |
| Scale Type | Open/Close Scale |
| Application | Simulates Thermostat and Economizer Functions |
| Housing Material | Metal Test Box Enclosure |
| Dimensions (H × W × D) | 4-1/4 in × 2-3/4 in × 2-5/16 in |
| Weight | 1.92 oz (0.12 lbs / 0.054 kg) |
| Compliance | UL Recognized, Industrial Grade Construction |
| Product type | Manual Potentiometer |
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