MHSC EYF18 Operations Instructions

LOHIOFFONIGNMODELS EYF18 AND EYF24Natural Gas or Propane/LPGControl Type: Manual or MillivoltUNVENTED GAS LOG HEATER OR VENTED DECORATIVE APPLIANCEINS

10 65D1009LOHIOFFONIGNPLACEMENT IN A FIREPLACE WITH A RESTRICTIVE BARRIER IMPORTANT INFORMATION FOR THE INSTALLATION OF THIS GAS LOG SETThe following

65D1009 1116"42"CLEARANCES AND HEIGHT REQUIREMENTSSidewall and ceiling clearances: The sides of the fireplace opening must be at least 16&q

12 65D1009Heater in Fireplace or Firebox8" or More ofHeat ResistantMaterialHoodMeasurethisdistanceHeater in Fireplace or FireboxHeat ResistantMa

65D1009 13Heater in Fireplace or FireboxHeat ResistantMaterialHood12"6" - 10 "21/2"8"min. 13" 18" 20&q

14 65D1009Heater in Fireplace or Firebox5" MinimumCombustibleMaterial14" MinimumHeater in Fireplace or FireboxCombustibleMaterialThis Dista

65D1009 15Damper StopDamperFigure 11 - Damper Stop Installation.(See WARNING at top of next page.)FIREPLACE PREPARATIONBEFORE FULLY INSTALLING THE UN

16 65D1009LOHIOFFINSTALLING VENTED APPLICATIONPLACING AND SECURING APPLIANCEASSEMBLY PROCEDURE:1. Center the gas log unit in the fireplace or firebo

65D1009 17Pipe CouplingTo Heater ValveGas Supply Inlet CONNECTING THE GASNOTICE: A qualified gas appliance installer must connect the heater to the g

18 65D1009Test Port “OUT”WARNINGCHECKING GAS PRESSUREThe heater gas inlet connection is a 3/8" NPT at the valve. All units have the inlet conne

65D1009 19ELECTRICAL WIRING (MILLIVOLT)The millivolt valve is a self-powered combination gas control THAT DOES NOT REQUIRE 110 VAC TO OPERATE.CONNECT

2 65D1009CONTENTSImportant Safety Information ... 3Getting Started ... 5Product

20 65D1009LOHIOFFSKYTECHOFFONREMOTEELECTRICAL WIRING (MILLIVOLT)A. COMPLETE MILLIVOLT SYSTEM CHECK (“A” Reading - On/Off Switch contacts CLOSED

65D1009 21LOG PLACEMENTPLACING THE DECORATIVE ROCK Figure 18 - Installing EYF24-F Logs on Burner Before you begin — This unit is supplied with a four

22 65D1009LOG PLACEMENTFigure 21 - Installing Front Log (#3)INSTALLING EYF18-R LOG SET ON UNITFigure 22 - Installing Top Log (#4)Figure 23 - EYF18-R

65D1009 23LOG PLACEMENTINSTALLING EYF24-R OR EYF30-R LOG SET ON UNITFigure 26 - Installing Front Log (#3) Figure 27 - Installing Top Right Log (#4)Fi

24 65D1009FLAME APPEARANCEFlames from the pilot, front and rear burner should be visually checked as soon as the heater is installed. In addition, pe

65D1009 25LO HIOFFONIGNIn normal operation at full rate after 15 minutes, the following flame appearances should be observed:Figure 34 - Correct Appe

26 65D1009LOHIOFFWARNINGFigure 35 - Location of Piezo Ignitor, Control Knobs and Switch on Millivolt Unit FOR YOUR SAFETY READ BEFORE LIGHTING A. T

65D1009 27HILOHILOHILOWARNINGOPERATING INSTRUCTIONS MANUAL CONTROL LIGHTING INSTRUCTIONS TO TURN OFF HEATER 1. Turn control knob clockwise to OF

28 65D1009OPERATING INSTRUCTIONS MILLIVOLT CONTROL LIGHTING INSTRUCTIONS 1. STOP! Read the safety information label. 2. Make sure the manual shu

65D1009 29WARNINGOPERATING INSTRUCTIONS AND CLEANING AND SERVICING MATCH LIGHTING INSTRUCTIONS 1. Remove any items necessary for easy access to t

65D1009 38. For propane/LP insert, do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors. To preven

30 65D1009Note: All troubleshooting items are listed in order of operation.WARNINGTROUBLESHOOTINGTurn appliance OFF and allow to cool before servicin

65D1009 31WARNINGTROUBLESHOOTINGIf the gas quality is bad, your pilot may not stay lit, the burners may produce soot and the heater may backfire when

32 65D1009147 - Manual 1123596107 - Millivolt8ILLUSTRATED PARTS BREAKDOWN Failure to position the parts in accordance with these diagrams or failure

65D1009 33REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. Item Description QtyEYF18 EYF24Natural Propane Natural Propan

34 65D10091234132443125ILLUSTRATED PARTS BREAKDOWN Item Description Qty. EYF24-F1 Main Log 1 65D0006K2 Front Log 1 65D1030K3 Top Left Log 1 65D0008K4

65D1009 35NOTE REGARDING VENTED PRODUCTSThis product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of

JULY 2008 P/N 65D1009 • Rev. 4MONESSEN HEARTH SYSTEMS CO. LIMITED LIFETIME WARRANTY POLICYLIFETIME WARRANTYThe following components are warranted for

4 65D1009IMPORTANT SAFETY INFORMATIONThis appliance may be installed in an aftermar-ket, permanently located, manufactured (mobile) home, where not p

65D1009 5MAKE SURE YOU HAVE RECEIVED ALL PARTS:Check your packing list to verify that all listed parts have been received. You should have the follow

6 65D1009NATURAL GAS Manual Pressure Millivolt PressureRegulator Pressure Setting: 4.0" w.c. Regulator Pressure Setting: 3.5" w.c.Ga

65D1009 7GENERAL INSTALLATION INFORMATIONCODESAdhere to all local codes or, in their absence, the latest edition of THE NATIONAL FUEL GAS CODE ANSI Z

8 65D1009WHThe following formula can be used to determine the maximum heater rating per the definition of unconfined space:BTU/Hr = (L1 + L2) Ft x (W

65D1009 9CADBFIREPLACE AND HEARTH DIMENSIONSUse manufacturer's installation and clearance requirements as defined in their manual.The EYF Series