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652035
PH logs cover

Unvented Gas Log Heater/ Vented Decorative 

Appliance Installation and Operating Instructions

Models:  PH18 (for use with PH18R Log Sets) 
 

PH24 (for use with PH24R or PH30R Log Sets)

If the information in this manual is not 

followed exactly, a fire or explosion may 

result causing property damage, personal 

injury or loss of life.

WARNINGS

INSTALLER: Leave this manual with the appliance.

CONSUMER: Retain this manual for  

future reference.

–  Do not store or use gasoline or other 

flammable  vapors  and  liquids  in  the 

vicinity of this or any other appliance.

–  WHAT TO DO IF YOU SMELL GAS

  • Do not try to light any appliance.

  •  Do not touch any electrical switch; do 

not use any phone in your building.

  • Immediately  call  your  gas  supplier 

from a neighbor's phone. Follow the 

gas supplier's instructions.

  • If you cannot reach your gas supplier, 

call the fire department.

–  Installation  and  service  must  be  per

-

formed by a qualified installer, service 

agency or the gas supplier.

This  is  an  unvented  gas-fired  heater.  It  uses  air 

(oxygen)  from  the  room  in  which  it  is  installed. 

Provisions for adequate combustion and ventilation 

air must be provided. 

Refer to page 8.

 

Monessen • PH18/24 Installation/Owner's Manual • 65D2035 • Rev G • 03/2020

Summary of Contents for PH18

Page 1: ...liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediatel...

Page 2: ...arts 32 Accessories 38 Massachusetts Residents Only 39 Warranty 40 CARBON MONOXIDE POISONING Early signs of carbon monoxide poisoning are similar to the flu with headaches dizziness and or nausea If y...

Page 3: ...1 Due to high temperatures the appliance should be located out of traffic and away from furniture and draperies 2 Children and adults should be alerted to the hazard of high surface temperature and sh...

Page 4: ...d position This can lead to pilot outages and severe sooting outside the fireplace 25 Never burn solid fuels in a fireplace where an unvented room heater is installed 26 Always have a fireplace screen...

Page 5: ...ignitor allows ignition of the pilot without the use of matches or batteries Manual control has three 3 positions OFF All gas to the gas logs is shut off at the valve IGN Valve position to light main...

Page 6: ...g set Hand held Remote with receiver Wall thermostat with 15 wire Wall switch with 15 wire Hand held Thermostat Remote with receiver Carefully inspect the contents for shipping damage If any parts are...

Page 7: ...overheat and malfunction WARNING IMPORTANT INFORMATION FOR THE IN STALLATION OF THIS GAS LOG SET The following are guidelines for placing a gas log set in a fireplace that has a restrictive barrier a...

Page 8: ...tinuous water vapor retarder with a rating of 1 perm 6 x 1011 kg per pa sec m2 or less with openings gasketed or sealed and b Weather stripping has been added to windows and doors and c Caulking or se...

Page 9: ...nts with no wooden mantel or other combustible projection To install the gas logs into a fireplace with no wooden mantel shelf or other combustible projection above the fireplace opening measure the h...

Page 10: ...Heater in Fireplace or Firebox FP2535 Figure 8 Minimum Mantel Clearance with No Hood Figure 7 Minimum Mantel Clearance with Hood Example The bottom of the mantel may project from the wall a maximum of...

Page 11: ...rebox Combustible Material FP2924 Figure 9 Minimum Clearance Above Combustible Flooring 14 Minimum FP2925 min noncomb floor clear This Distance May Now be Less than 5 Heater in Fireplace or Firebox Co...

Page 12: ...and chimney professionally cleaned to remove ashes soot creosote or other obstructions Have this cleaning performed annually after installation Seal any fresh air vents or ash clean out doors lo cate...

Page 13: ...hen connecting to inlet pipe CONNECT THE GAS LINE CAUTION Use new black iron or steel pipe Internally tinned copper or copper tubing can be used per National Fuel Code section 2 6 3 providing gas meet...

Page 14: ...d locked to dis courage tampering If the pressure is not as specified replace the regulator with the correct part from the parts list in this manual Remove 1 8 NPT plug located on side of regulator bo...

Page 15: ...other end connect one wire to TP TH and one wire to TH The color of the wires does not matter Or you can hook the wall switch or thermostat to wires on the unit ELECTRICAL WIRING MILLIVOLT Label all...

Page 16: ...cting meter test leads to terminals as indicated A COMPLETE MILLIVOLT SYSTEM CHECK A Reading On Off Switch contacts CLOSED Control Knob ON Main burner should come ON a If the reading is more than 175...

Page 17: ...tion of this heater Sooting and other problems may result if the logs are not properly and firmly positioned in the appliance Never add additional logs or embellishments such as pine cones vermiculite...

Page 18: ...g 4 LG1086 Figure 19 4 Place Front Log 4 in between burner and grate so that notched areas fit between grate supports Figure 19 LG1087 PH18 logs 5 6 Left Top Log 5 Right Top Log 6 LG1087 Figure 20 5 R...

Page 19: ...jury PLACE PH24 R LOGS 1 Place Rear Log 1 on rear support Figure 21 2 Place Left Middle Log 2 on middle support and burner Figure 22 3 Place Right Middle Log 3 on middle support Figure 22 NOTE Logs 1...

Page 20: ...g 4 LG1090 Figure 23 4 Place Front Log 4 in between burner and grate so that notched areas fit between grate supports Figure 23 LG1091 PH 24 logs 5 6 Left Top Log 5 Right Top Log 6 LG1091 Figure 24 5...

Page 21: ...30 log 1 Rear Log 1 LG1092 Figure 25 LG1093 PH30 logs 2 3 Right Middle Log 3 Left Middle Log 2 LG1093 Figure 26 WARNING The positioning of the logs are critical to the safe and clean operation of this...

Page 22: ...will give off a paper burning smell and orange flames will be present Simply open the windows for a few hours to vent the odor CAUTION LOG PLACEMENT LG1094 PH30 log 4 Front Log 4 LG1094 Figure 27 4 P...

Page 23: ...st always be present when the heater is in operation It should just touch the top of the thermocouple tip for natural Refer to Figures 29 and 31 for correct pilot flame appearance FP2273 pilot bad fla...

Page 24: ...EARANCE In normal operation at full rate after 15 minutes the following flame appearances should be observed The left and right flames should be yellow and extend 1 to 2 above the log top surfaces The...

Page 25: ...nts These chemicals are not harmful but may produce annoying smoke and smells as they are burned off during the initial operation of the appliance possibly causing headaches or eye or lung irritation...

Page 26: ...o not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instruc tions If you cannot reach your gas su...

Page 27: ...knob pushed in push and release the piezo ignitor button to light the ODS pilot The pilot is located on the left side of the heater behind the middle log and in front of the back log If piezo ignitor...

Page 28: ...knob for 30 seconds orlonger to allow air to bleed out of the gas piping 7 With the control knob pushed in push in and release the piezo ignitor button to light the pilot 8 Continue pushing the contro...

Page 29: ...CLEANING Refer to parts diagram for lo cation of items discussed below Do not use cleaning fluid to clean logs or any part of heater Brush logs with soft bristle brush or vacuum with brush attachment...

Page 30: ...turned off or manual shutoff valve closed 2 Control knob not in PILOT position 3 Control knob not pressed in while in PILOT position 4 Air in gas lines when installed 5 ODS pilot is clogged 6 Gas reg...

Page 31: ...gged 1 Burner orifice is clogged or dam aged 2 Burner is damaged 3 Gas regulator is defective 1 Vapors from paint or curing process of logs 1 Turning control knob to HIGH posi tion when burner is cold...

Page 32: ...rvice Parts Beginning Manufacturing Date NA Ending Manufacturing Date Active PH18 Part number list on following page 03 20 18 Hearth Kit PH18NM Natural Gas Manual Control PH18NV Natural Gas Millivolt...

Page 33: ...ntrol NG SRV14D0473 Y Propane SRV14D0477 Y Pilot Tube 49D0050K Y 3 Grate 65D2001K 4 Piezo Ignitor SRV14D0503 Y Piezo Wire SRV00K0632 Y 5 On Off Switch Millivolt Control SRV32D0232 Y 6 Knob Control Man...

Page 34: ...ogies does not sell directly to consumers Provide model number and serial number when requesting service parts from your dealer or distributor Stocked at Depot ITEM DESCRIPTION COMMENTS PART NUMBER 13...

Page 35: ...rvice Parts Beginning Manufacturing Date NA Ending Manufacturing Date Active PH24 Part number list on following page 03 20 24 Hearth Kit PH24NM Natural Gas Manual Control PH24NV Natural Gas Millivolt...

Page 36: ...ontrol NG SRV14D0473 Y Propane SRV14D0477 Y Pilot Tube 49D0050K Y 3 Grate 65D2002K 4 Piezo Ignitor SRV14D0503 Y Piezo Wire SRV00K0632 Y 5 On Off Switch Millivolt Control SRV32D0232 Y 6 Knob Control Ma...

Page 37: ...Stocked at Depot ITEM DESCRIPTION COMMENTS PART NUMBER 13 Log Assembly Required to complete burner assembly Sold seperately 24 Mountain Cedar PH24R 13 1 Rear Log 20303855K 13 2 Left Middle Log 2030385...

Page 38: ...35 Rev G 03 2020 Accessories Flex Connector Flexcon 30 All Models Wall Switch Kit MVSW Millivolt Only Wall Thermostat Kit WT Millivolt Only Remote Controls RCMT RCB RCBE Millivolt Only Thermostat Remo...

Page 39: ...od of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day period a battery operated carbon monoxide detector with an alarm shall be installed MASSACHUS...

Page 40: ...hichever occurs earlier However the warranty shall commence no later than 24 months following the date of product shipment from HHT regardless of the installation or occupancy date The warranty period...

Page 41: ...improper handling 4 improper operation abuse misuse continued operation with damaged corroded or failed components accident or improperly incorrectly performed repairs 5 environmental conditions inad...

Page 42: ...42 PH Gas Logs Monessen PH18 24 Installation Owner s Manual 65D2035 Rev G 03 2020 Monessen a brand of Hearth Home Technologies 7571 215th Street West Lakeville MN 50044 www monessenhearth com...

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