Applications
The HRM-V Split Passive Heat Pipes Series is designed for projects where supply and exhaust air streams cannot be placed close together. Ideal for layouts requiring complete isolation to prevent cross contamination, it offers higher effectiveness and better efficiency than water run-around systems—without moving parts.
Capabilities Overview
Coilmaster’s HRM-V Split Passive Heat Pipes system uses multiple charged circuits, with two rows of heat exchangers, a vapor header at the top, and a liquid header at the bottom. A permanent elevational difference between supply and exhaust air streams enables optimized recovery for the season that yields the most BTUs, while still allowing partial recovery in the off-season.
Winter Only
- Higher single season (winter) recovery
- Maximum 120 ft. pipe length
- Elevation at least + 25% of section FH
- Moisture eliminator or extended drain under exhaust coils
- Typical Effectiveness: 50%
- AHRI certified performance to std. 1060 and ETL listed
Summer Only
- Higher single season (cooling) recovery
- Maximum 120 ft. pipe length
- Elevation at least + 25% of section FH
- Moisture eliminator or extended drain under supply coils
- Typical Effectiveness: 45%
- AHRI certified performance to std. 1060 and ETL listed
Control Valves
Liquid-side control valves on each circuit allow recovery to be turned off during economizer conditions or closed to prevent frost in extreme cold.
Dynamic Seasonal Offset (DSO™) System
For balanced recovery in both heating and cooling, HRM-V units can also be equipped with a Dynamic Seasonal Offset (DSO™) system, delivering about 45% effectiveness on a six-row system at 500 FPM. This system outperforms older side-by-side configurations by 20–35%, with higher sensible effectiveness and improved seasonal efficiency.
Winter / Summer Recovery
With Dynamic Seasonal Offset (DSO™)
- Balanced heating / cooling recovery
- Maximum 120 ft. pipe length
- Supply and exhaust at the same level
- Moisture eliminator or extended drain pan required under supply and exhaust
- Integral face dampers to create offset effect
- Typical effectiveness: 45% Summer and Winter
- AHRI certified performance to std. 1060 and ETL listed