Hot & Chilled Water Coils, Water to Air Heat Exchangers

Hot/Chilled Water Coil is 3 row coil with 12 fins per inch and 1" copper sweat headers. This Hot and Chilled Water Coil has 3/8 high grade smooth 3/8" copper tubing with 0.006" corrugated aluminum fins and 20 gauge steel casing. Can be used with Hydronic Air Handlers, High Efficiency Gas Boilers, Cast Iron Boilers, Wood Burning Boilers( High Supply Temperature), High Velocity Air Conditioning Systems (SpacePak, Unico).
A Hot and Chilled Water Coil is a heat exchanger. It transfers heat energy between water and another medium (usually air) as quickly and efficiently as possible. Heating coils transmit energy from hot water to a stream of air, cooling coils extract energy from an air stream and add it to cold water.The coils themselves consist of a matrix of copper tubes through which the water flows. The tubes run back and forth between two end-plates in an arrangement that lets the air flow perpendicular to the tubes. The tubes pass through - and are attached to - a layered array of thin metal plates known as fins. The fins are also perpendicular to the tubes, which means they lie parallel to the direction of air flow. The air flows between them. Energy either passes from the water via the tubes and fins to the air, or from the air via the fins and tubes to the water.

The efficiency of this arrangement depends on the types and thickness of metal used, the integrity of the bond between tubes and fins, the number and the layout of the tubes and fins, the air flow, and the water flow. Our skill lies in pulling all those elements together to make a coil that's right for your application.

Types of Water Coil - Water to Air Heat Exchangers:


Low-Grade Hot Water Coil (LGHW)

Typically below 140 F. LGHW is associated with condensing boilers or waste water that has already lost much of its heat.
Low-Pressure Hot Water Coil (LPHW)

Typically between 140 F and 230 F. LPHW is the most common medium for coil heat exchangers.
Medium-Temperature Hot Water Coil (MTHW)

typically between 230 F and 260 F. To keep water liquid above 210 F requires additional pressure. 245 F requires a pressure of 30 PSi.
High-Temperature Hot Water Coil (HTHW)

Typically above 260 F. The most demanding condition for coil design. 285 F requires a pressure of 50 PSi.
When discussing heating coils, the terms "low", "medium", and "high-temperature" are interchangeable with "low", "medium", and "high-pressure".

Cooling (Chilled Water) Coils are characterised by the amount and type of Anti-Freeze (Glycol) used:

Pure water is the most common medium. It's used in applications that do not require the water temperature to fall below 30 F, or where there's no risk of freezing.
The introduction of anti-freeze (glycol) adversely affects the heat transferring properties of water. The increased viscosity slows flow rates through the coil. Anti-freeze concentrations above 30% require specialist pump equipment. They are not recommended.

Ethylene glycol solution (EGS) is the more efficient and the most widely-used of the two anti-freeze solutions.
Propylene glycol solution (PGS) is always used in the food industry because it is less toxic.
20 Gauge Steel Casing.
3 Row of High Grade Soft Smooth Copper.
1" Sweat Copper Headers.
12 Fins per Inch.
0.006" Corrugated Aluminum Fins.
Factory Tested
Hot Water Coil Warranty

10 years heat exchanger

Water is the most abundant medium for heating and cooling applications. Luckily there's a water coil from WSD for just about any hot or cold water application. We have over 30 years' experience in the design and manufacture of coils. There are few, if any, design and specification issues that we have not addressed before. When you specify a coil from WSD, you're sourcing it from the coil experts.

Fujitsu Multi Zone Inverter Mini Split Heat Pumps

Fujitsu AOU24RML1+ASU9RMLQ+ARU9RML - Wall Mounted/Concealed Multi-Zone Heat Pump Ideal solution for multi level housing, doctors' offices and nursing homes. This Fujitsu's multi-zone mini-split heat pump will provide you with 18,000 BTU of heating for winter and 1-1/2 ton of cooling for hot summer and it comes with 1-ARU9RML concealed 9,000 BTU unit with wired remote control and 1-ASU9RMLQ wall mounted 9,000 BTU unit with wireless remote control. These unit are connected to the modern AOU24RML1 - up to 24,000 BTU outdoor condensing unit. Complete system creat the perfect clymate control for your space. Mix-and-match flexibility of evaporator type and capacity allows you to choose the indoor unit that best fits the application, whether it be hidden or showcased.
What is Mini-Split Heat Pump?


Like your refrigerator, heat pumps use electricity to pump refrigerant and transfer heat from one space to another. When we transfer heat from within our home to the outdoors, we call it "air conditioning". Conversely, when we transfer heat from the outdoors to within the home, we call it a "heat-pump". Because refrigerant is naturally much colder than outdoor temperatures even on a very cold day, it actually absorbs heat from outdoors, and transfers the heat it absorbed outside to within your home. The refrigerant's physical properties do this naturally. What you pay for is the electricity to pump refrigerant via copper tubing from outdoors to indoors. Because we move the heat rather than create it (as electric baseboard or resistant heat does), we can deliver up to 4 times the heat for the energy we consume!

Fujitsu Halcyon Mini-Split Heat Pump Systems are Flexible and Quiet


Mini splits offer flexibility because they can be suspended from a ceiling, mounted flush behind a drop ceiling, hung on a wall or floor-standing. Ductless heat pumps allow for a peaceful inside environment by enabling the contractor to install components like compressors and motors outdoors.

Fujitsu Inverter Technology.

Inverter components allow an outdoor unit to vary its speed and output to match your comfort needs. The built-in Inverter controls the speed of the compressor. The Inverter Power Module uses electrical components to switch and chop created DC to make simulated AC at the required frequency and voltage that drives the compressor. Compared to the common on/off controlled compressor, the inverter driven compressor runs at the proper revolution to provide the required capacity. When maximum capacity isn�t needed, compressor revolution and power decreases, increasing system efficiency. "Soft start" reduces the instantaneous peak demand associated with AC equipment starts. The compressor starts at minimum speed, avoiding high inrush current associated with standard compressors.

Fujitsu AOU24RML1+ASU9RMLQ+ARU9RML - Wall Mounted/Concealed Multi-Zone Heat Pump at a glance:


Wall Munted ASU9RMLQ

Stylish, slim and elegant, wall mounted units are designed to complement any interior d�cor.
Compact size.
I.A.Q. plasma filter.
Wireless remote control.
Automatic swinging louvers.
Concealed Ceiling ARU9RML

Mounted in a ceiling or in a framed enclosure below a ceiling. They use minimal ductwork and remain very energy efficient.
Concealed and out of sight.
Look of cenrtal air with the efficiency of a mini-split.
Less ducts = higher efficiency.
Fujitsu Inverter Technology

Fujitsu Inverter air conditioners are more economical to operate and quieter to run than conventional units. They can handle greater extremes in temperature, are smoother and more stable in operation, and reach the desired temperature faster than convectional air conditioners.
Fujitsu Inverter Control

Fujitsu Inverter component allows the outdoor unit to vary its speed and output to match the required capacity of the indoor unit. Thus, the inverter model can achive 30% more operating efficiency than conventional models and therefore, is much less expensive to run.
Fujitsu I.A.Q. Plasma Filter - Wall Mounted Models Only

High performance electronic air cleaner removes dust and odor, improving indoor air quality.
Wired Remote Contrl- Standard for Concealed Ceiling(UTB-UUB) and Compact Cassette (UTY-RNBYU)

Full Function Wired Remote.
Remote Control Thermo Sensor.
Apple Catechin Filter (polyphenol ingredient from apples) - Wall Mounted Models Only

Dust, mold spores and microorganisms are absorbed onto the filter by static electricity and growth is inhibited and deactivated.
Ion Deodorizing Filter - Wall Mounted Models Only

Deodorizes by decomposing absorbed odors using the oxidizing and reducing effects of ions generated by fine ceramic particles.
Branch Duct Capable - Concealed Models Only

Systems are capable of attaching field-supplied branch ducts providing up to 38% of the cooling up to 16 feet away.
Minimum Heat Mode.

Sets room temperature to 50 F, keeping temperatures above freezing and reducing power consumption.

Fujitsu AOU24RML1+ASU9RMLQ+ARU9RML - Wall Mounted/Concealed Multi-Zone Heat Pump Other Standard Features :


All Fujitsu Halcyon Systems Have ISO and ETL Approvals for U.S. and Canada.
Environmentally Friendly and ARI performance certified.
Sleek, Modern Design with Easy to Access Controls and Visible System.
16 SEER, 9HSPF.
Plasma Filter.
Sleep Timer.
24 Hour Timer.
Auto Louver: Up/ Down - Wall Mounted Units Only.
Coil Dry Mode - Wall Mounted Units Only.
Auto Restart.
Quiet Mode - Wall Mounted Units Only.
Dry Mode.
Cold Prevention.
Return Air-intake - Concealed Units Only.
Economy Mode.
Low Ambient.
Auto Changeover.
Auto Restart/Reset.
Branch Duct Capable - Concealed Units Only.
Wired/Wireless Switching.
Fujitsu AOU24RML1+ASU9RMLQ+ARU9RML - Wall Mounted/Concealed Multi-Zone Heat Pump Warranty

2 year parts / 6 years compressor

Fujitsu Mini Split Ductless Heat Pump and Air Conditioner System - more Benefits:

The high efficiency of Fujitsu systems helps them pay for themselves by slashing electrical costs. Strong, quiet and efficient DC motors are used both indoors and outdoors. High performance fan blades, condensers and evaporators combined with variable speed inverter-driven compressors makes for unmatched performance. Variable speed compressors automatically adjust to fluctuating room capacity requirements.

Fujitsu's multi-zone mini-split heat pump systems let contractors select either a 24 or 36,000 BTU outdoor unit combined with 9,000, 12,000 or 18,000 BTU wall mounted, compact cassette or concealed ceiling type indoor units to create the perfect climate control system for almost any size space. Create 110 different systems with only 11 components. Mix-and-match flexibility of evaporator type and capacity allows you to choose the indoor unit that best fits the application, whether it be hidden or showcased.

Quietside DPW Dual Purpose Gas Fired Heaters

The Quietside DPW-099A, DPW-120A and DPW-199A Dual Purpose Water Heaters provide both closed loop heating water, for radiant fan coil, and other hydronic application plus with the convenience and efficiency of on-demand domestic hot water. Three capacities-99,000 ,120,000 and 199,000Btu/h available. These Units have efficiency levels of 90% AFUE on the heating operation and an energy factor of up to 0.85 for DHW production. These outstanding efficiency levels are achieved by utilizing 2 heating exchangers, including a wet recuperative heat exchanger. This heat exchanger condenses extra energy from the hot flue gas to provide additional performance and energy. These units are capable of being vented in schedule 40 PVC.

Features and Benefits of Quietside, DPW-099A, DPW-120A and DPW-199A Dual Purpose High Efficiency Combi Gas Fired Heater at a glance

Energy Star Rated.

S Line Heat Exchangers ensures complete separation from condensate, increasing unit longevity.

Copper finned tube Primary Heat exchanger.

Wet Recuperative Exchanger made from 304 Stainless Steel.

Modulation Gas Valve with turndown ratio 2:1 to provide performance across a wide range of heat loads.

Durable Hydroblock modular concept is used to mount all of the components controllingheating and DHW flow directly to the DHW heat exchanger.

A circulation pump is included for the Heating system. For correct operation the unit MUST be piped in a Primary – Secondary configuration.

Modulating Blower Assembly to provide the correct airflow for combustion. The fan is designed for low noise and low vibration operation.

Easy Installation, Service and Maintenance with all pipe connections located at the bottom and serviceable components easily accessible from the front.

Compact, Lightweight Design and zero clearance to combustibles make it a great choice for limited-space installations.

Easy to Use Unit Controller.

Extremely Quiet Operation.

Quietside, DPW-099A, DPW-120A and DPW-199A Dual Purpose High Efficiency Combi Gas Fired Heater Other Standard Features :

Limited 12 Years Heat Exchanger Warranty

5 years parts warranty

On-Board boiler control

Variable speed pump

Power module c/w pre-wired plug-in connections

Built-in condensate P-trap

All wiring connections c/w number coded plugs

Zero clearance to combustibles for all vent options

Burner modulation with flue gas adaptation

Domestic hot water priority

Differential air pressure sensor: shuts down burner in case of vent blockage

Boiler freeze protection

Factory tested.

Product Warranty

5 years parts / Limited 12 Years heat exchanger

Other great features of Quietside, DPW - Dual Purpose High Efficiency Combi Gas Fired Heaters They are have efficiency levels of 90% AFUE on the heating operation and an energy factorof up to 0.85 for DHW production. These outstanding efficiency levels are achieved by utilizing two heating exchangers, including a wet recuperative heat exchanger. This heat exchanger condenses extra energy from the hot flue gas to provide additional performance and energy.These units are capable of being vented in Schedule 40 PVC.