Description
The 32003663-001 EMM‑3 is a Honeywell electronic mini-zone control panel designed to manage HVAC systems in two- or three-zone configurations. It controls single-stage heating/cooling equipment and zone dampers, enabling efficient climate control across multiple areas. Compact and robust, it enhances comfort and efficiency in residential and light commercial installations.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Honeywell |
| Category |
|
| Part Number |
32003663-001 |
| Subcategory |
VDC Logic I/O Brain/Interface |
| Product Type |
Electronic Mini-Zone Control Panel |
| Zones Supported |
2 or 3 zones |
| Thermostat Compatibility |
4-wire Honeywell & compatible models |
| Voltage Input |
20–30 VAC, 50/60 Hz |
| Power Consumption |
approx. 10.75 VA |
| Damper Types Supported |
Spring-open/power-close, etc. |
| Transformer Type |
Single or dual transformer system |
| System LED Indicators |
Heat, Cool, Purge, Fan |
| Zone LED Indicators |
3 dampers (open/closed) status |
| Purge Timer |
Fixed 2.5-minute purge cycle |
| Thermal Circuit Protection |
Included for transformer and panel safety |
| Operating Temperature Range |
–40°F to +150°F (–40°C to +65°C) |
| Humidity Range |
5% to 90% RH non-condensing |
| Mounting |
Wall-mountable with screws included |
| Wiring Gauge |
Accepts 18–22 AWG |
| Housing Finish |
Taupe cover; gray base |
| Dimensions |
~10.75″ × 12.75″ × 1.875″ (273 × 324 × 47 mm) |
| Certifications |
FCC Class B |
| Weight |
Approx. 1.23 lbs (0.56 kg) |
Information About 32003663-001
The 32003663-001 (EMM‑3) MiniZone Panel is a discontinued Honeywell zoned HVAC controller that supports up to three zones using four-wire thermostats. It features system and zone LEDs for operational status indications and integrates a purge timer and thermal breaker to protect system components. Compatible with spring-open/power-close, spring-close/power-open, and power-open dampers, it offers automatic zone changeover and individual fan control. Operating off 20–30 VAC, the unit is engineered for durability with wide operating temperature and humidity tolerances.
Key Features:
- Zone Control: Supports 2–3 zone configurations with automatic changeover.
- Thermostat Compatibility: Works with standard 4-wire Honeywell thermostats.
- LED Status Indicators: System (heat, cool, purge, fan) and per-zone damper LEDs.
- Purge Timer: Built-in 2½-minute purge cycle for safety between mode changes.
- Thermal Protection: Circuit breaker prevents overload and miswiring damage.
- Damper Compatibility: Supports multiple damper types with various actuators.
- Transformer Flexibility: Accepts single or dual 20–30 VAC transformer supplies.
- Rugged Build: Rated for –40°F to +150°F operation, 5–90% RH non-condensing.
- Compact Design: Wall-mountable panel sized for ease of installation.
- Legacy System Support: Ideal for adding zoning to existing forced-air HVAC systems.
The 32003663-001 EMM‑3 delivers reliable, zone-based climate control with solid performance and HVAC protection features.
