Design Dynamics HCA-18-RFN Owner'S Operation And Installation Manual Download Page 12

www.desatech.com

115481-01B

12

CLEANING AND 

MAINTENANCE

 WARNING: Turn off the ap-

pliance and allow to cool before 

cleaning.

  CAUTION:  You  must  keep 

control  areas,  burners  and 

circulating air passageways of 

fireplace  clean.  Inspect  these 

areas  of  fireplace  before  each 

use. Have fireplace and chimney 

(if applicable) inspected yearly 

by  a  qualified  service  person. 

Fireplace  may  need  more  fre-

quent cleaning due to excessive 

lint  from  carpeting,  bedding 

material, etc.

Only limited cleaning will be required under nor-

mal use of this appliance. Dust the front grate and 

top of receiver/valve. Do not use cleaning fluids to 

clean logs or any other part of the appliance.
If, after a period of use, the flames start to exhibit 

unusual shapes and behavior or the burner fails to 

ignite smoothly, then the burner holes may require 

some cleaning. If this happens, we recommend 

that you contact your nearest authorized service 

technician to get the appliance serviced.

TRANSMITTER

If the battery light is on or the display is blank, 

you will need to replace the three AAA batteries 

in transmitter/remoter. To change batteries in the 

transmitter/remote, slide the battery compartment 

door off to expose old batteries. Place new batteries 

into housing and reattach door. See Figure 15.

Figure 15 - Bottom of Transmitter, 

Showing Battery Compartment and Door

TECHNICAL SERVICE

You may have further questions about installation, 

operation or troubleshooting. If so, contact DESAʼs 

Technical Service Department at 1-866-672-6040. 

When calling please have your model and serial 

numbers of your heater ready.
You can also visit DESAʼs technical services web 

site at 

www.desatech.com.

REPLACEMENT PARTS

Note:

 Use only original replacement parts. This 

will  protect  your  warranty  coverage  for  parts 

replaced under warranty. 

PARTS UNDER WARRANTY

Contact authorized dealers of this product. If they 

canʼt supply original replacement part(s), call DESAʼs 

Technical Service Department at 1-866-672-6040. 

When calling DESA, have ready
•  your name and address
•  model and serial numbers of your log set 
•  how log set was malfunctioning
•  type of gas used (propane/LP or natural gas)
•  purchase date
Usually, we will ask you to return the part to the 

factory.

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product. If they 

canʼt  supply  original  replacement  part(s),  call 

DESA at 1-866-672-6040 for referral information. 

When calling DESA, have ready
•  model number of your log set 
•  the replacement part number

Summary of Contents for HCA-18-RFN

Page 1: ...any appliance Do not touch any electrical switch do not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a quali fied installer service agency or the gas supplier VENTED DECORATIVE GAS LOG HEATER OWNER S OPERATION AND IN...

Page 2: ...es ANSI Z233 1 NFPA 54 Section 5 3 Air for Combustion and Ventilation This appliance may be installed in an aftermarket per manently located manufactured mobile home where not prohibited by local codes This appliance is only for use with the type of gas indi cated on the rating plate This appliance is not convert ible for use with other gases Aftermarket Completion of sale not for purpose of resal...

Page 3: ...ts Make certain you read and understand all warnings Keep this manual for reference It is your guide to safe and proper operation of this log set WARNING Any change to this log set or its controls can be dangerous WARNING Donotuseablow erinsert heatexchangerinsertor otheraccessorynotapprovedfor use with this appliance WARNING This appliance is equipped for natural or pro pane LP gas Field conversi...

Page 4: ...en the vents before operating heater 7 Toreducethecreationofsoot followtheinstruc tions in Cleaning and Maintenance page 12 8 Do not run heater where flammable liquids or vapors are used or stored under dusty conditions 9 Do not burn solid fuel in the fireplace after installing the log set Do not use this log set to cook food or burn paper or other objects SAFETY INFORMATION Continued 10 Log set bec...

Page 5: ...highly heated A dirtychimneyfluemaycreateand distribute soot within the house Inspectchimneyfluefordamage If damaged repair flue damper before operating appliance CAUTION Thisheatercreates warmaircurrents Thesecurrents move heat to wall surfaces next to heater Installing heater next tovinylorclothwallcoveringsor operatingheaterwhereimpurities such as but not limited to to bacco smoke aromatic candles...

Page 6: ...ed pro pane LP tank may cause an explosion Propane LP Supply Tank External Regulator Vent Pointing Down Figure 3 External Regulator with Vent Pointing Down Figure 2 Attaching Damper Clamp Manufactured Fireplace Masonry Fireplace Damper Damper Clamp Damper Damper Clamp Damper VENTING SPECIFICATIONS FOR INSTALLATION The fireplace chimney flue and vent must be draft ing properly To check the vent for p...

Page 7: ...y 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 Figure 4 Gas Connection PurchasetheoptionalCSAdesign certifiedshutoff valve from your dealer See Accessories page 18 Minimum inlet pressure for purpose of input adjustment Approved Flexible Gas Hose If allowed...

Page 8: ...e leak detection fluid to all joints Bubbles forming show a leak 4 Correct all leaks at once Gas Pressure Check The appliance regulator controls the burner pres sure which should be checked at the pressure test point 1 8 NPT plugged tap located near the on the control valve identified OUT for the manifold side and IN for inlet pressure Make sure operating pressures are within the limits shown in Sp...

Page 9: ...led OPERATING APPLIANCE The RF Millivolt valve control used on these appli ances allows you to turn the gas log set on or off use a timer to automatically operate the log set increase or decrease flame height fan speed or timing An easy to read display gives you information about room temperature set temperature flame height level fan speed level and a countdown timer as well as a low battery indica...

Page 10: ...he appliance and to replace any part of the control system and any gas control which has been under water OPERATING HEATER Continued LIGHTING INSTRUCTIONS NOTICE During initial operation the appliance will emit a slight odor for an hour or two This is due to the burn in of the inter nal paints and lubricants used in manufacturing For the first fewhours operatetheappliance with doors and windows ope...

Page 11: ...ntil mode is OFF Pilot stays lit Shut Off Main Burner Without Remote Turn PilotStat knob to PILOT Pilot stays lit Shut Off Main Burner and Pilot Turn PilotStat knob to OFF CAUTION During normal shutdown of this unit a flash may be observed due to the na ture of the burner components Remain clear of the unit during the shutdown process INSPECTING BURNERS Check pilot flame pattern and burner flame pat ...

Page 12: ...e slide the battery compartment door off to expose old batteries Place new batteries into housing and reattach door See Figure 15 Figure 15 Bottom of Transmitter Showing Battery Compartment and Door TECHNICAL SERVICE You may have further questions about installation operation or troubleshooting If so contact DESAʼs Technical Service Department at 1 866 672 6040 When calling please have your model ...

Page 13: ...ntrol system be sure external gas shut off valve located at gas supply inlet is in the ON position POSSIBLE CAUSE REMEDY OBSERVED PROBLEM 1 Defective ignitor no spark at electrode 2 Defective or misaligned electrode at pilot spark at electrode 3 Gas supply pressure errant 4 Pilot orifice plugged 1 Defective pilot generator thermocouple Spark ignitor will not light pilot after repeated triggering of...

Page 14: ...2 Check thermopile with mil livolt meter Take reading at thermopile terminals of gas valve It should read 325 mil livolts minimum with optional wall switch OFF Replace faulty thermopile if reading is below specified minimum 3 Check burner orifice for stop page and remove 1 Clean and or adjust pilot flame for maximum flame impinge ment on thermocouple see Figure 13 page 11 POSSIBLE CAUSE 1 Wall switch ...

Page 15: ... 10 6 3 W C 3 5 1 6 W C 10 6 3 W C Inlet Gas Pressure in of water Maximum 10 5 W C 13 W C 10 5 W C 13 W C Minimum 5 0 W C 11 W C 5 0 W C 11 W C Valve Operation RF Millivolt RF Millivolt RF Millivolt RF Millivolt Orifice Size 21 42 28 45 For purpose of input adjustment WIRING DIAGRAM Outlet Pressure Tap Inlet Pressure Tap Piezo Gas Control Knob Pilot Adjustment Screw Pilot Burner Assembly Pilot Tube...

Page 16: ...om 115481 01B 16 ILLUSTRATED PARTS BREAKDOWN HCA 24 RFN HCA 24 RFP HCA 18 RFN HCA 18 RFP HCM 24 RFN HCM 24 RFP HCM 18 RFN HCM 18 RFP HKE 24 RFN HKE 24 RFP HKE 18 RFN HKE 18 RFP 1 3 7 6 5 4 2 8 9 10 12 13 17 15 16 11 ...

Page 17: ... 115492 01 115492 01 115493 01 Air Shutter 1 10 115454 01 115454 01 115454 01 115454 02 Venturi 1 11 115452 01 115452 01 115452 01 115452 01 Valve Bracket 1 12 115488 01 115488 01 115488 01 115488 01 Tube 1 13 14396 14396 14396 14396 Adapter Valve 1 14 115489 01 115489 01 115489 01 115489 01 Adapter Orifice 1 15 115450 01 115450 01 115451 01 115451 01 Burner Plate 1 16 115456 01 115456 01 115456 01...

Page 18: ... on the back page of this manual EQUIPMENT SHUTOFF VALVE GA5010 Equipment shutoff valve with 1 8 NPT tap Fits 1 2 pipe FIREPLACE HOOD Black GA6050 Brass GA6052 Antique Brss GA6053 Helps deflect heat away from mantel or wall ab ove fireplace Fits opening 28 to 4 wide DAMPER CLAMP GA6080 Not Shown Permanently opens chimney flue damper for vented operation LAVA ROCK GA6060 Not Shown Order when addition...

Page 19: ...______________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _______________________________________...

Page 20: ...nostic cost labor transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner TOTHE FULLEXTENTALLOWED BYTHE LAWOFTHE JURISDICTIONTHATGOVERNSTHE SALE OF THE PRODUCT THIS EXPRESSWARRANTYEXCLUDESANYANDALLOTHER EXPRESSEDWARRAN TIESANDLIMITSTHEDURATIONOFANYANDALLIMPLIEDWARRANTIES INCLUDINGWARRANTIES OF MERCHANTABILITY AND FITNESS FOR A...

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