Mitsubishi 15kW Electric Heater Module - Large Cabinet, PVA - EH15-MPAS-LB

Mitsubishi 15kW Electric Heater Module - Large Cabinet, PVA - EH15-MPAS-LB

Mitsubishi electric back-up heater module for P-Series PVA multi-position air handlers

This module is necessary for the systems installed in cold regions 

Unit Type: Electric Back-up Heater ModuleProduct Line: P-Series PVACompatible Air Handlers: PVA-A36AA, PVA-A42AARequired Accessory: SPTB1 - Separate Terminal Power Block

 Includes

Unit EH15-MPAS-L

Specifications

Voltage	208/240 V, 1‑Phase
Heater Power (kW)	11.3 / 15.0 (208/240 V)
Heater Amps (Circuits 1 & 2)	27.1 / 31.2 A (208/240 V)
Stages kW (1st + 2nd)	7.5 + 7.5 kW
Factory Installed Breaker (Circuit 1/2)	45 A / 40 A
Dimensions (W × D × H)	25" × 21‑1/4" × 6"

What our Experts Think

• Robust 15 kW Electric Heater Module: The Mitsubishi 15 kW Electric Heater Module – Large Cabinet (EH15‑MPAS‑LB) adds powerful supplemental electric heat to P‑Series PVA multi‑position air handlers for reliable warmth in cold weather conditions. It’s ideal for regions where heat pump capacity alone may not meet peak heating demand.

• Designed for Residential HVAC Integration: Built specifically for PVA‑A36AA / PVA‑A42AA air handlers, this module mounts directly to the air outlet and works with a separate power supply, ensuring clean, effective heat delivery without relying on the outdoor unit.

• Two‑Stage Heating & Power Handling: Delivers up to 15 kW of heat at 208/240 V, with staged operation for better comfort control and efficiency. Electrical requirements demand proper circuit sizing (MCA ~33.9‑39.1 A, MOP 35‑40 A).

• Compact yet Heavy‑Duty Build: Large‑cabinet format offers robust performance while keeping a relatively compact profile, making it suitable for mechanical closets or utility areas with air handler pairing.

• Flexible Orientation & Installation: Compatible with vertical, horizontal, and downflow installations on approved multi‑position air handlers; static pressure considerations ensure efficient airflow when integrated.

• Reliable Backup Heat Source: Acts as an effective backup or supplemental heat source in cold climates, helping maintain setpoint temperatures when heat pump output alone may struggle, making comfort systems more versatile and dependable.

• Expert Verdict: A practical choice for HVAC pros and homeowners needing additional heating capacity integrated seamlessly with Mitsubishi P‑Series air handlers, balancing robust heat output with compact, installation‑friendly design.

Q&A

Q: What is the Mitsubishi EH15‑MPAS‑LB?
A: It’s a 15 kW electric heater module in a large cabinet used as a backup or supplemental heat source with certain Mitsubishi multi‑position air handlers (PVA/MVZ/SVZ).

Q: What is its heating capacity?
A: Provides 15 kW of electric heat output at 208/240 V AC, suitable for supplemental heat in cold climates or where heat pump output may be insufficient.

Q: What systems is it compatible with?
A: Designed for Mitsubishi P‑Series PVA multi‑position air handlers (e.g., PVA‑A36AA, PVA‑A42AA) and also fits other multi‑position air handler lines per manufacturer specs.

Q: How does it operate?
A: The heater module mounts directly to the air outlet of the air handler and provides staged electric heating when controlled through the HVAC system’s control board.

Q: What electrical requirements does it have?
A: Operates on 208/240 V single‑phase power, drawing approximately 31.2 A at 240 V, and requires its own dedicated power supply.

Q: Does it require additional accessories?
A: Installation typically requires a separate terminal power block (SPTB1) or wiring per Mitsubishi guidelines to ensure proper connection and control.

Q: What are its approximate dimensions?
A: Roughly 25″ W × 21‑1/4″ D × 6″ H in a large cabinet design for easier attachment to the air handler assembly.

Q: What applications is it best for?
A: Ideal for cold‑climate installations or systems where extra heat is needed beyond the heat pump’s capacity during extreme low temperatures, enhancing overall comfort and performance.

Maintenance Tips

• Confirm Proper Installation: Ensure the heater module is correctly mounted to the multi‑position air handler and connected through the CN24 control terminals — improper install can lead to malfunction or safety risks.

• Use Separate Power Supply: Always use a dedicated 208/240 V power circuit sized for the 15 kW load; do not try to power the heater from the outdoor unit’s circuit.

• Inspect Electrical Connections: Periodically check wiring and terminal blocks for tight, corrosion‑free connections — loose or corroded connections increase resistance, heat buildup, and risk of failure.

• Keep Module Clean & Dry: Ensure the module and surrounding cabinet space stay free of dust, moisture, and debris; contaminants can degrade electrical components and reduce performance.

• Check External Static Pressure: Maintain the correct external static pressure (≤0.60 in WG) across air handler and heater module to ensure proper airflow and safe operation.

• Monitor Thermal Protection: If the heater trips thermal cutoffs or circuit breakers frequently, investigate airflow restrictions or oversized load to prevent overheating and protect components.

• Annual Professional Service: Have a licensed HVAC technician inspect the heater module each heating season for optimal performance, wiring integrity, and safety compliance.