The separated combustion units draw combustion air from outside to ensure that the unit will always have plenty of fresh, clean air for combustion while increasing the overall heating efficiency. Venting material to be used is PVC, an extremely cost effective vent system (shop Effinity93 here)
Model PTPThe PTP features a stainless steel heat exchanger that comes STANDARD on all units to withstand corrosive combustion air found inside a greenhouse, extending the life of your investment.
A 10-year heat exchanger warranty is standard, providing you peace of mind. The PTP utilizes Modine’s proven tubular heat exchanger design. Original finger-proof fan guard for low mounting height applications. LP gas can be supplied at no additional charge. Call for Propane catalog numbers (shop PTP here)
Hot Dawg (Model HD)Power-Exhausted Gas-Fired Unit Heater
Hush-puppy quiet operation. Right or left hand controls available on all 30-75 units. Gas, electrical and flue connections can be changed by simply flipping the Hot Dawg over. It uses natural gas; LP also available. Lightweight, easily installs 1” from roof with only two angle brackets (included on sizes 30-75, accessory for 100, 125). Full 10-year warranty on heat exchanger. Standard power exhaust simplifies side-wall or roof venting with small-diameter vent pipe. Permanently-lubricated motor for trouble-free dependability. Controls are single stage, direct spark ignition, 100% shut-off, with continuous retry. Two stage also available, call for more information. Low-profile design and natural color to blend (shop Hot Dawg HD here)
Hot Dawg (Model HDS)Separated Combustion Gas-Fired Unit Heater
Draws combustion air from outside the work space, ensuring the unit always has plenty of fresh, clean air to breathe. The fresh air supply reduces common concerns about dusty, dirty or humid applications, providing greater durability and reduced maintenance. Factory assembled, certified separated combustion saves installation time. LP gas also available (shop Hot Dawg HDS here)
Model PTSThese unit heaters are specifically designed for buildings with difficult atmospheric conditions, such as chemicals, high humidity or negative pressure, as in modern greenhouses. Combustion air is brought in from outdoors. Modine’s unique design also minimizes resistive losses, resulting in greater heat throw and lower motor horsepower requirements. These unit heaters employ a non-condensing recuperative heat-exchanger design to reclaim additional flue-gas heat prior to expelling the gases from the building. Available in either propeller or blower models. Sealed compartment protects combination gas control, ignition control, manifold and burner. 100% outside air for combustion. Stainless-steel secondary heat-exchanger tubes. Horizontal or vertical concentric venting. Single-stage, intermittent pilot ignition, 100% shut-off with continuous retry. Available in natural gas or propane. 82% thermally efficient = 20%+ fuel savings versus gravity-vented products (shop Model PTS here)
to resist rust and corrosion for longer life. 22-gauge cold-rolled steel case comes with completely baked on, painted outer panels. The burner can be easily removed for fast service. Available in aluminized or stainless steel. A power exhaust that can be rotated 180°. Unit can be vented vertically or horizontally. A 100% shut-off, intermittent pilot-ignition system with continuous retry, at no extra charge. This ignition system allows for all PDP/BDP units to be field-converted to propane, if desired. A safety pressure-switch to assure safe venting conditions. Designed to utilize the smallest-diameter vent pipe possible. Standard safety fan guards formed from heavy rod stock. PDP models are designed to operate against 0.5” of external static pressure. “Wing” screws so that the bottom pan can be dropped without a screwdriver or nut driver. A level hanging mechanism for easy field adjustments after adding accessories that may change the unit’s center of gravity. Catalog numbers set for natural gas. Please call for more information (shop Model PDP here)
Electric Unit HeatersHorizontal Delivery
MOTOR – The totally enclosed, thermally protected, continuous-duty motor is specially mounted for quiet operation and extended service life. Motor is selected to match fan requirements.
FAN – The large-bladed, lightweight aluminum fan is connected directly to the motor shaft, and is both dynamically and statically balanced.
HEATING ELEMENTS – For maximum heat transfer and longer life, the sheathed nichrome wire heating elements are spirally wound and staggered within the unit to provide even air distribution.
SAFETY FAN GUARD – Formed from heavy rod stock, the fan guard eliminates the hazards of an exposed fan. Resiliently mounted to the unit casing, the guard provides a rigid support for the motor.
AUTOMATIC RESETTING OVERHEAT CONTROL – Interrupts power to heating elements in event of overheating and automatically resets itself (shop electric unit heaters here)
Horizontal Vent Stacking for Modine Power Venter Unit Heaters- Kits include: 2 pieces of 1' straight pipe, 90 degree elbow, tee with drip leg and cap, 3' straight pipe, wall flashings, storm collars, support brackets and cap
- All stacking is insulated
- Metal-Fab "B" vent
- Special "Breidert or Gary Steel" caps can be ordered separately if remaining system is to be supplied "by others
- shop vent stacking kits here