INSTALLATION

Continued

For propane/LP units, 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 of water. If you do not reduce incoming gas pres- sure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 14. 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 1/2" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Installation must include an 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 15).

IMPORTANT: Install equipment valve in an acces- sible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance. Check your building codes for any special re- quirements for locating equipment shutoff valve to fireplaces.

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 14 - External Regulator With Vent

Pointing Down

We recommend that you install a sediment trap in supply line as shown in Figure 15. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings.

Propane/LP

 

From External

 

Regulator (11" W.C.**

CSA Design-

to 14" W.C. Pressure)

Natural

Certified Equipment

From Gas Meter

Shutoff Valve With

(5" W.C.** to

1/8" NPT Tap*

10.5" W.C.

 

Pressure)

Gas

 

 

Regulator

 

3" Minimum

Tee

Pipe Cap

Approved Flexible

Gas Hose (if allowed

Joint

Nipple

by local codes)

Sediment Trap

Figure 15 - Gas Connection

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See

Accessories, page 38.

** Minimum inlet pressure for purpose of input adjustment.

CHECKING GAS CONNECTIONS

WARNING: Test all gas pip- ing and connections, internal and external to unit, for leaks after installing or servicing. Cor- rect all leaks at once.

WARNING:Neveruseanopen flame to check for a leak. Apply a noncorrosive leak detection fluid toalljoints.Bubblesformingshow a leak. Correct all leaks at once.

14

www.desatech.com

113097-01E

Page 13 Page 15
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Image 14
Desa CRL3124PA/NA, CCL3018PA/NA, CCL3930PTB/NTB, CCL3924PTA/NTA, CCL3924PA/NA Checking GAS Connections, Propane/LP, Natural
Page 13 Page 15

CCL3018PTA/NTA, RL2718PA/NA, CCL3924PA/NA, CCL3924PTA/NTA, CCL3930PTB/NTB specifications

Desa CCL3924PTA/NTA, CCL3018PTA/NTA, CCL3930PTB/NTB, CCL3924PA/NA, and CCL3018PA/NA are a lineup of advanced cooling units designed to meet diverse needs in thermal management for residential, commercial, and industrial applications. Each model brings together a blend of innovative technology and user-friendly features that ensure efficient performance and reliability.

The CCL3924PTA/NTA model is designed for high-performance cooling, offering a blend of efficiency and sustainable operation. Its inverter technology allows for variable speed control, leading to lower energy consumption and quieter operation. This model is particularly suited for larger spaces, providing consistent cooling throughout the environment while maintaining energy efficiency.

CCL3018PTA/NTA is a compact unit that excels in environments with space constraints. Despite its smaller size, it delivers robust cooling performance, making it ideal for residential settings or small office spaces. Its lightweight design and easy installation capabilities reduce downtime and allow for swift setup, while its smart thermostat controls enable precise temperature management.

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The CCL3924PA/NA variant focuses on energy efficiency without compromising on cooling power. This model is equipped with advanced thermal insulation technology, minimizing heat exchange and enhancing its performance during peak usage. Users benefit from significant energy savings, making it an environmentally friendly choice for those concerned about carbon footprints.

Lastly, the CCL3018PA/NA brings versatility with its dual-function capability. This model not only serves as a cooling unit but can also function as a heater, making it a year-round solution for climate control. Its efficient heat pump technology makes it an ideal choice for locations with varying seasonal temperatures, ensuring comfort throughout the year.

In conclusion, the Desa lineup of cooling solutions combines cutting-edge technology, energy efficiency, and user-friendly features, catering to a wide array of applications and user needs. Each model has been engineered with a focus on durability and reliability, making them a smart investment for anyone looking to enhance their indoor climate control systems.
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