Modine Greenhouse Heating
Modine’s Breakthrough
Greenhouse Heating
Solution
Greenhouse Heating Applications
 Greenhouse Heating Costs are a Key Issue to Growers
– 2nd highest cost after labor
– A matter of survival in lean years
 Greenhouse Heating is Both a Comfort & Process Issue
– Occupant health & comfort
– Crop health and yield
 Greenhouse Environments Present Challenges
– “Tight” Construction - Traps humidity & chemicals inside
• Humidity
– Molds and Fungus
– Equipment Corrosion
• Chemical Vapors
– Forms acids when combined with moisture & heat
Gas-Fired Unit Heaters
Why Gas-Fired Unit Heaters Make Sense
 Warm, Forced-Air Heat is Healthy For Plants
– Uniform heat = Uniform growth
– Absorbs moisture and mitigates mold & fungus
– Helps plants absorb CO2 more efficiently
 Vented Furnaces Remove Harmful Flue Products
– Water vapor
– Ethylene, harmful to many plants
– Carbon monoxide, causes discomfort, sickness
or death for occupants
 Individually Piped, Wired & Vented for
Redundancy
– If one unit fails, the others work overtime
– Less risk of no-heat situations
Gas-Fired Unit Heaters
Why Gas-Fired Unit Heaters Make
“Cents”
 Zone Control
– Units only run where heat is needed
• “Off” is the highest efficiency
 Re-Cycles Heat Stratifying at the Ceiling
– Heat from solar radiation
 Quick Reaction from Night Setback Temps
– Boiler systems require longer “warm-ups”
 Low Installed Cost
– Comparatively low equipment cost
• No mechanical rooms, pumps, valves, etc.
Modine Has Supported the Horticultural Industry for Decades
 Industry Associations
– NGMA since 60’s
– NAHSA since Inception
– OFA
Modine Has Supported the Horticultural Industry for Decades
 Historically Designed Solutions to Meet Growers’ Changing Needs
Gravity Vented GFUH - Provide low cost reliable heat; 1960s – 1990s
• 65% efficient however
Power Vented GFUH - Provide more reliable installations as houses
became “tighter” with more efficient coverings; 1980s – 2000s
• 78% efficiency
Separated Combustion GFUH - Provide longer life expectancies in
tighter houses that also had more chemical usages; 1980s – today
• 80% efficiency
- 93% efficient, separated combustion,
condensing GFUH; provides highest efficiency and
longevity
The Next Leap Forward
Modine’s NEW Effinity93 – 93% efficient separated combustion
condensing unit heater with our exclusive Conservicore technology
™
Effinity93 Design Features
AL29-4C Secondary
Heat Exchanger
The Heart and Soul…
 Secondary heat exchanger made of AL29-4C
stainless steel
– Robust material designed specifically to
withstand acidic condensate (PH 4)
 Lowers the flue temperatures from 350-400
degrees F to 110-120 degrees F
Condensate Production
– Approx. 1+ gallons/hr for small units
– Approx. 2+ gallons/hr for large units
– Need to drain both unit & vent system
Additional Effinity93 Design Features


Contractor Convenience Package
–
Easier installation & troubleshooting
–
Standard on all Effinity units
Includes:
–
Service outlet for condensate pump,
utility light or cleaning
–
Disconnect switch
–
External thermostat terminal board
–
Operational status lights:
•
Power-to-the-unit
•
Call-for-heat
•
Burner operation
Effinity93 Sizes
outputs closely match btu outputs of
standard efficiency units
•
•
•
•
•
•
PTC135 output > 80% 150MBH unit
PTC155 output > 80% 175MBH unit
PTC180 output > 80% 200MBH unit
PTC215 output > 80% 250MBH unit
PTC260 output > 80% 300MBH unit
PTC310 output > 80% 350MBH unit
Effinity93 Benefits
What this means for the grower
 19% Fuel Savings Over 80% Efficient Power Vented
Units
 43% Fuel Savings Over Natural Draft Gravity Vented
Units!!!
– 65% Seasonal Efficiency Due to Open Vent Heat
Losses
 May qualify for local utility rebates & tax incentive
programs
 Improved standing with Big Box customers
 Separated combustion advantages
– Provides sufficient air to unit for combustion
– Longer lasting heat exchangers, burners & controls
– Day-to-day operation enhanced with controls with
in casing
Effinity93 Benefits
Comparatively What This Means to the
Grower
 All advantages of GFUH apply
– Warm air circulation, vented flue products,
redundancy, heat de-stratification, low
installed costs, etc.
 Direct-fired efficiencies without direct-fired
disadvantages
– Water vapor, ethylene, carbon monoxide,
required air changes
 Boiler efficiencies without boiler system
disadvantages
– High up-front costs, mechanical rooms, piping
system complexity, no redundancy, lower
water temperatures, fuel storage (biomass)
Effinity93 Application Flexibility
Recommended Options & Accessories

Stainless Steel Primary Heat Exchangers
–
Recommended for high humidity applications
–
Provides 10 yr heat exchanger warranty

Finger-Proof (OSHA) Fan Guards

Condensate Pumps & Neutralizer Kits

2-Point Suspension Kits

Energy Saver Kit
–
Ceiling T-Stat Energizes Fan Without Burner as Ceiling Temps Rises
Effinity93 Field Test
Milaeger’s Test Unit
PTC135 Unit
Flue Gas
Exhaust
Fresh Combustion
Air Intake
Condensate
Drain
Effinity93 Fuel Savings & Payback Calculator
State & Local Efficiency Incentives

Efficiency Incentive Programs
– Significantly reduces payback period
– May find incentives for other efficiency upgrades like thermal
blankets, caulking & insulation, high efficiency motors, lighting, etc.
www.dsireusa.org
Searches by State, Program Type, Technology Type, etc.

USDA Grant Programs
• 2 yr investment grants for small business from USDA
• Ranges from 25 to 50% of the investment
• Viability in Holland MI has expertise to assist in the grant writing
 Equipment Leasing
• Pinnacle Leasing focused on Horticultural Industry
• 3 yr lease payments can be less than the savings gained from
installing the Effinity93
For More Information…
www.MODINEHVAC.com/GREENHOUSE
Make More Money with Modine
Saving More Money equates to Making More Money with Modine
We appreciate your business and we continue in the goal of earning
your respect.
Thank You