Desa CRN30 Checking GAS Connections, Joint Nipple Sediment Trap From External Regulator

Page 12

INSTALLATION

Continued

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 Diameters

CRN18(T) and CRP16(T) - 3/8" or greater CRN30(T) and CRP26(T) - 1/2" or greater CRT30NT and CRT26PT - 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 15).

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.

Install sediment trap in supply line as shown in Figure 15. Locate sediment trap where it is within reach for cleaning. 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.

IMPORTANT: Hold the pressure regulator with wrench when connecting it to gas piping and/or fittings. Do not over tighten pipe connection to regulator. The regulator body could be damaged.

Pressure

 

 

 

Regulator

 

 

3/8" NPT

Regulator

 

 

 

 

Pipe

Bracket

 

 

Nipple

Heater

 

 

Ground

Cabinet

 

 

Joint

Connection*

Bushing to

 

Union

 

Valve *

 

Tee Joint

 

Equipment

 

Reducer

 

Shutoff

Gauge

1/8" NPT

 

Natural Gas

1/8" NPT

 

 

 

 

3"

From Gas

 

Plug Tap

Meter (7" W.C.

Test

Min.

 

 

 

 

 

to 10.5" W.C.

 

 

 

 

 

Tee

Pipe Cap

 

Pressure)

 

 

Propane/LP

 

Joint

Nipple

 

 

Sediment Trap

 

From External

 

 

Regulator

(11" W.C. to 14" W.C. Pressure)

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 23.

Figure 15 - Gas Connection

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec- tion fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: For propane/LP gas, make sure external regula- tor has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 11.

12

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Contents CRP26, CRP26T, CRT26PT, CRN30, CRN30T, CRT30NT Model CRN30 ShownTable of Contents Safety Information Product Features Local CodesUnpacking AIR for Combustion Ventilation Providing Adequate VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR Ventilation Air From Inside BuildingInstallation Installation ItemsCheck GAS Type Locating HeaterInstalling Heater to Wall Thermostat Sensing BulbThermostat Models Only Mounting BracketMethods For Attaching Mounting Bracket To Wall Marking Screw LocationsPlaque Heater Attaching To Wall Anchor MethodInstalling Bottom Mounting Screws Placing Heater On Mounting BracketConnecting to GAS Supply Mounting Base Feet to Floor Where required by local codeMounting Heater to Floor Mounting Base Feet to HeaterChecking GAS Connections Joint Nipple Sediment Trap From External RegulatorTest Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaNON-THERMOSTAT Models For Your Safety Read Before Lighting Operating HeaterLighting Instructions Manual Lighting Procedure Thermostat Models For Your Safety Read Before LightingTo Select Heating Level To Turn OFF GAS To ApplianceIgnitor Button Control Knob Control Knob CRP16T CRP26TInspecting Heater Thermostat OperationPilot Flame Pattern Burner Flame PatternCleaning Maintenance Service HintsTechnical Service Troubleshooting Observed Problem Possible Cause RemedyODS/pilot lights but flame Gas leak. See Warning Specifications CRN18, CRN18T CRN30, CRN30T CRT30NTAccessories Replacement PartsService Publications Illustrated Parts Breakdown Cabinet Body ModelsParts List Cabinet Body Models CRT26PT and CRT30NT KEY Part Number CRT26PT CRT30NT Description QTY Burner Assembly Models CRP16, CRN18, CRP26 and CRN30 110803-02 Illustrated Parts Breakdown Parts Central Warranty Information Keep this WarrantyLimited Warranty VENT-FREE Infrared GAS Heaters

CRN30 specifications

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In conclusion, the Desa CRN30 stands out as a powerful, reliable, and secure device that caters to the needs of modern users. Its exceptional features, advanced technology, and user-friendly design make it an ideal choice for anyone looking to enhance their productivity and experience in an increasingly digital world. Whether for work or leisure, the Desa CRN30 promises to deliver outstanding results.
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