Desa CTR25NR, CTR22PR, VTN25R, VTP22R installation manual Connecting to GAS Supply

Models: CTR25NR CTR22PR VTN25R, VTP22R

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INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.

WARNING: A qualified service person must connect heater to gas supply. Follow all local codes.

WARNING: For natural gas, never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

IMPORTANT: For natural gas, check gas line pressure before connecting heater to gas line. Gas line pressure must be no greater than 10.5 inches (2.6 kPa) of water. If gas line pressure is higher, heater regulator damage could occur.

CAUTION: For propane/LP gas, never connect heater di- rectly to the propane/LP supply. This heater requires an external regulator (not supplied). Install theexternalregulatorbetweenthe heater and propane/LP supply.

For propane/LP gas, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches (2.7 and 3.5 kPa) of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install the external regulator with the vent pointing down as shown in Figure 12. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Typical Inlet Pipe Diameter

All models - 1/2" or greater

Installation must include equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13, page 11).

IMPORTANT: Install an equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

WARNING: Use pipe joint sealant that is resistant to liquid

petroleum (LP) gas.

 

Propane/LP

External

Supply Tank

Regulator

 

Vent

Pointing

Down

Figure 12 - External Regulator With Vent

Pointing Down

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113261-01A

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Desa CTR25NR, CTR22PR Connecting to GAS Supply, Propane/LP External Supply Tank Regulator Vent Pointing Down

CTR25NR, CTR22PR, VTN25R, VTP22R specifications

Desa VTN25R, VTP22R, CTR22PR, and CTR25NR are renowned models in the landscape of power generation and energy efficiency solutions. These products cater to varying needs, providing reliable performance for both residential and commercial applications.

The Desa VTN25R is distinguished by its robust design and high fuel efficiency, making it an ideal choice for users looking to balance power output with energy conservation. This model features a state-of-the-art EcoThrottle technology, which adjusts engine speed according to load, significantly reducing fuel consumption and noise levels. With a maximum output of 2500 watts, the VTN25R ensures that users can power a variety of appliances and equipment without concern for overloading.

Next in line, the Desa VTP22R model stands out for its versatility and compact form factor. Weighing in at just 45 pounds, this generator is incredibly portable, making it an excellent choice for outdoor enthusiasts and those needing backup power in emergency situations. It also incorporates a user-friendly digital display, allowing users to monitor fuel levels, output wattage, and engine performance at a glance. Its quiet operation and low emissions are additional highlights that make the VTP22R an environmentally conscious option.

Turning to the CTR22PR, this generator is designed with advanced inverter technology, supplying clean and stable power suitable for sensitive electronics. Its dual fuel capability allows it to run on both gasoline and propane, offering flexibility and convenience for users in diverse situations. The ergonomic handle and lightweight design facilitate easy transport, while the safety features, including overload protection and automatic shutoff, ensure peace of mind during operation.

Lastly, the CTR25NR model boasts higher wattage capacity coupled with enhanced durability. This unit features heavy-duty components, ensuring it can withstand rigorous usage over time. With features like an LED indicators panel and advanced cooling systems, the CTR25NR promises extended run times and operational efficiency. Users appreciate its ease of maintenance and serviceability, which translate into a longer lifespan.

In summary, the Desa VTN25R, VTP22R, CTR22PR, and CTR25NR generators offer a range of features and technologies tailored to meet the needs of different users. Whether it’s fuel efficiency, portability, clean power supply, or heavy-duty performance, these models demonstrate a commitment to reliability and innovation in the power generation market.