KeyWarm Blog

APPLICATIONS

Industrial & Commercial Heating Uses

  • Workshops
  • Warehouses
  • Supermarkets
  • Offices,
  • Gymnasiums
  • Schools
  • Exhibition halls
  • Drying process such as food and painting.

Agricultural Heating Uses

ADVANTAGES

  • Decentralized and oriented heating.
  • Simple installation and operation.
  • Wide power range from 50,000 Btu/hr to 400,000 Btu/hr or 15kW to 117kW.
  • Quick solution for heating large spaces, warehouses and garages.
  • No need for a heat distribution network.
  • Simple to control with a thermostat. 
  • High efficiency achieved by condensing units.
  • Easy maintenance.

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HOW IT WORKS

A unit heater is a stand-alone appliance serving to heat a given space and capable of operating on propane or natural gas.

The equipment usually includes a heat exchanger, through which a fan blows air from the room to be heated. There are two types of indirect-fired heaters, indirect-fired axial heaters (WAB) and indirect-fired centrifugal heaters (WCB). The temperature rise is about 28°C and 36°C, respectively. The air flows and the blowing distances are much greater with a centrifugal fan, and sometimes designed with a duct to distribute the warm air.

 

  • Natural gas or LPG.
  • Rates 50/80/150/200/300/400 x1,000 Btu/hr or 15/23/44/58/88/117kW
  • Inshot burner makes the combustion more complete with lower CO and NOx.
  • Heat exchanger made by aluminized steel or stainless steel pipes.
  • Reliable Direct Spark Ignition.
  • The 12VAC low-voltage ignition controller, specially developed for HVAC industry, all troubleshoots can be easily identified by the indicator lights
  • Safer and reliable low-voltage 24 VAC combination gas valve with 100% shut off.
  • Flameout protection, fan malfunction protection, and overheating protection.
  • Special baffles in the heat exchanger can enhance the heat exchange efficiency.

Heating Power: 

Warehouse: 25-35 Btu/hr per ft2 or 80-110 W/sqm

Mechanical workshop: 40-60 Btu/h per ft2 or 120-180 W/sqm

Here are the criteria to consider in selecting the units:

  • Installation height;
  • Positioning;
  • Axial fan or centrifugal blower
  • Heating power;
  • Combustion: sealed or unsealed combustion;
  • Venting: combustion products are usually vented outdoors.

It is always best to start with a pre-installation checklist; a list of things to check before an installation takes place. The following is a basic checklist and is meant to serve as an example:

  • Pick a location that is suitable for the unit that is being installed.
  • Make sure that venting requirements can be met.
  • Check for structural issues that may affect the installation of piping or duct work.
  • Plan a gas piping route, including pipe sizing, that will properly supply the system.
  • Plan for proper condensate drainage when applicable.
  • Check for the proper clearance to combustibles as  recommended  by the  manufacturer and in accordance with local codes.
  • Make sure the installation will leave the unit accessible for future service.

APPLICATIONS

  • Livestock farm cleaning
  • Oil and gas industries
  • Food services
  • Truck&Car wash
  • Construction sites
  • Waste management industries

ADVANTAGES

  • Best cleaning solution for oils, grease and proteins, especially stubborn dirt.

  • Improves emulsification, making it very easy remove.
  • Reduction of the working pressure, cleaning time and the amount of detergent required.
  • Cost savings and environmental friendly.

  • Shorter surface drying time.

  • A significant reduction in germs so improved hygiene.
  • Time saving of up to 35% with improved cleaning results and elimination of detergent expenses can quickly compensate the initial cost of a hot water boiler.

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HOW IT WORKS

The water gun(s) start first, when high pressure water passes through equipment’s heat exchanger, the thermostat calls for ignition. Then the combustion fan starts to pre-purge. The ignition control system starts to ignite and burn after the safety inspection. The high-temperature flue gas heats the heat exchanger, and the heat exchanger absorbs heat and transfers it to high-pressure water to produce high-temperature, high-pressure hot water. The combustion will stop when water temperature reaches the thermostat set-point during washing or when the water gun(s) stop.

 

  • Heat exchange system: High efficiency heat exchanger with double-layer coils. Galvanized or stainless steel pipes are available.
  • Combustion system: Downward flame, two-loop heating, high efficiency and energy saving.
  • , extremely low content of CO and other harmful oxides in the flue gas, and backfire avoided.
  • All-round water protection: water pressure protection (over/low pressure), water flow protection (over/low flow), water temperature and high temperature protection, dry heating protection, etc.
  • Combustion safety: Pre-purge and post-purge cycles. Ignition failure safety protection, accidental flameout protection, fan failure protection.
  • Control system: 12VAC low-voltage ignition and 24VAC gas valve are safe and reliable, and is convenient for daily maintenance.
  • Anti-rust treatment heat exchanger coil (stainless steel optional)                                                               
  • Rear-mounted boiler, cold water flows through the pump then heated by the boiler, which avoids accelerated aging and damage the sealing of the pump.
  • Easy maintenance and quick replacement of parts.

Heating Power, Water Flow Rate are two major factors of a boiler: 

  • 88kW, 15L/min.
  • 105kW, 21L/min.
  • 130kW, 30L/min.

Once your proper PSI value is established, based on the type of job you are completing, you can increase your boiler’s  to cut down on cleaning time. Below are a few common PSIs used with various surface cleaning duties:

  • Concrete cleaning: 3,000 to 3,500 PSI
  • Car cleaning: 1,200 to 1,900 PSI
  • Wood cleaning: 2,000 to 3,000 PSI depending on hard wood or soft
  • Trucks and tractors: PSI of at least 1,800
  • Livestock shelters: PSI of at least 3,000
  • Decks, fences, and siding: PSI of at least 2,000
  • Paint stripping, construction-site maintenance, graffiti removal: 3,200 to 4,200 PSI

Each boiler comes with following safe functions:

  • Excess pressure is released by a safety valve.
  • An exhaust gas temperature limiter turns off the system if the temperature istoo high.
  • The flow switch starts the boiler if the quantity of water is sufficient and stops it if the quantity of water is insufficient.
  • The pressure switch starts the boiler by reaching the minimum pressure.
  • All safety devices mentioned before are connected in series. That means if one of the elements has a malfunction the boiler does not start. This guarantees the highest level of safety.

Details manual available upon request. 

APPLICATIONS

Outdoor Heating Uses

  • Restaurants & bars
  • Patios & balconies
  • Stations
  • Food stalls
  • Stadiums
  • Amusement parks
  • Golf driving range
  • Event venues

ADVANTAGES

  • Extend the outdoor season
  • Extend your restaurant or pub space
  • Attract and keep your guests comfortable
  • Enjoy the outdoors in comfort
  • Stylish and aesthetic centerpiece for your entertainment area
  • Safe to operate
  • Heaters take up zero floor space
  • An affordable luxury
  • Profitable return on investment

INQUIRE ABOUT PRODUCT

HOW IT WORKS

The infrared waves that are emitted work right away to heat up surrounding objects. These waves are absorbed by the human body and make you feel warmer with direct contact. It is possible to keep a patio area pretty warm with the use of one or more patio heaters.

Features

  • Stainless steel hexagonal hole decorative panel for enhanced radiant output
  • Two-stage operation, pre- and post-purge controls
  • Burner viewport for easy monitoring
  • Wind resistant up to 12 mph
  • 100% effecient reflector
  • Heat treated aluminized radiant tube provides increased efficiency and heat output
  • Unified control panel for easy access and maintenance
  • SUS316L brushed burner box

  • Three Models: 40,000/80,000/100,000 Btu/h
  • Length: 128.4″/240.9”/353.5”
  • Gas Type: NG (3.5″WC) or LP (10.0″WC)
  • Two-stage operation
  • SUS316L brushed burner box
  • Visible flame glass
  • Heat-treated aluminum radiating tube.
  • Wind resistant up to 12 mph.
  • 100% effecient reflector

  • Stainless steel hexagonal hole decorative panel for enhanced radiant output

     Patio heaters are selected based on two major factors:

  • Infrared heating comfort: consider heater installation height, outside temperature and wind speed
  • Infrared heating coverage: The heating coverage is proximately two times width of the height of heater and 1.2 times length of the heater.
  • Safe placement: minimum clearance to combustibles to be complied with, according to each manufacturer.
  • Safe Surroundings: Never place anything above or below your patio heater or check the manufacturer’s recommended inches of clearance, which varies according to the number of BTUs the heater radiates.
  • Fuel Safety: Patio heaters that use natural gas offer a more cost-effective alternative to heaters that use propane tanks. However, it is essential that you have the heater connected to the natural gas line by a professional. 
  • Weather Protection: There is nothing more dangerous to a patio heater than wind. You can protect your patio heater from the wind by placing it in a location that has less exposure. Chain installation is prohibited in windy conditions.
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