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Installation and Operation Instructions

Document 1170F

H2300300F

Installation and Operation

Instructions for

Rheos

Modulating Boiler

Model RHCH
Modulating Water Heater

Model RHCV

U.S. Patent No. 6,644,393
Canada Patent Pending

WARNING

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.

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

nearby 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 qualified installer, service agency, or gas

supplier.

FOR YOUR SAFETY:

This product must be installed and serviced by a professional service technician,

qualified in hot water boiler installation and maintenance. Improper installation and/or operation could

create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.

Improper installation and/or operation will void the warranty.

AVERTISSEMENT

Assurez-vous de bien suivres les instructions

données dans cette notice pour réduire au

minimum le risque d’incendie ou d’explosion

ou pour éviter tout dommage matériel, toute

blessure ou la mort.

Ne pas entreposer ni utiliser d’essence ni

d’autres vapeurs ou liquides inflammables dans

le voisinage de cet appareil ou de tout autre

appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d’allumer d’appareils.

• Ne touchez à aucun interrupteur. Ne pas vous

servir des téléphones dansle bâtiment où vous

vous trouvez.

• Appelez immédiatement votre fournisseur de

gaz depuis un voisin. Suivez les instructions

du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur de

gaz, appelez le sservice des incendies.

L’installation et l’entretien doivent être assurés par

un installateur ou un service d’entretien qualifié ou

par le fournisseur de gaz.

Содержание Rheos RHCH

Страница 1: ...professional service technician qualified in hot water boiler installation and maintenance Improper installation and or operation could create carbon monoxide gas in flue gases which could cause seri...

Страница 2: ...Connections 21 5 3 Temperature Control Boiler 21 5 4 Temperature Control Water Heater 21 5 4 1 Remote Water Heater Temperature Control 21 5 4 2 Internal Water Heater Temperature Control 22 5 5 Tempera...

Страница 3: ...be reviewed completely before proceeding with the installation Consult the Laars Heating Systems factory or local factory representative with any problems or questions regarding this equipment Experie...

Страница 4: ...ter high efficiency condensing model only 1 3 Warranty Laars Heating Systems Rheos appliances are covered by a limited warranty The owner should fill out the warranty registration card and return it t...

Страница 5: ...on nection W Inlet Water Connection Non Pump Mounted P Inlet Water Connection Pump Mounted S Outlet Water Connection All Models inches cm inches cm NPT NPT NPT 1200 6 15 6 15 2 1 2 2 1 2 2 1 2 1600 6...

Страница 6: ...ces Consult the factory for assistance 1 9 Locating Appliance for Correct Vent Distance From Outside Wall or Roof Termination The forced draft combustion air blower in the appliance has sufficient pow...

Страница 7: ...the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces that directly communicate with the outdoors and shall have a minimum free area of 1square inch per 30...

Страница 8: ...pening K Clearance to a mechanical air supply inlet 3 feet 91 cm above if within 10 feet 3 m 6 feet 1 83 m horizontally Vent termination not allowed in this location for Vent termination not allowed i...

Страница 9: ...m m from the unit to the vent terminal Up to five elbows can be used with the 50 feet 15 2m of pipe Subtract 10 allowable linear feet for every additional elbow used IMPORTANT NOTE ABOUT COMMON VENTIN...

Страница 10: ...fueled equipment installed in every dwelling building or structure used in whole or inpart for residential purposes including those owned or operated by the Commonwealth and where the side wall exhaus...

Страница 11: ...website phone number or manufacturer s address where the venting system installation instructions can be obtained and 2 The special venting systems shall be Product Approved by the Board and the inst...

Страница 12: ...LEGEND VALVE TEMPERATURE SENSOR 3 WAY VALVE PURGE VALVE SYSTEM RETURN SYSTEM SUPPLY INSTALL AIR VENTS AT HIGH POINTS IN SYSTEM PIPING SIZING OF EXPANSION TANK PER TANK MANUFACTURER S INSTRUCTIONS PRI...

Страница 13: ...REQUIREMENTS BOILER CIRC PUMP SYSTEM PUMP C C C 180 F 180 F 140 F 120 F NOTES 1 BOILER LOOP TO BE MAINTAINED AT 180 F 2 ZONE THERMOSTATS TO BE INTERLOCKED WITH BOILER BOILER TO FIRE UPON CALL FOR HEA...

Страница 14: ...P MOUNTED UNIT AVALIABLE BOILER CIRC PUMP COLD WATER MAKE UP SYSTEM PUMP SYSTEM RETURN SYSTEM SUPPLY ADJUSTMENT PROCEDURE TO MAINTAIN 130 F INLET TEMP 1 Turn on heater and open valves A B 2 After stea...

Страница 15: ...Test for spillage at the draft hood relief opening after 5 minutes of main burner operation Use the flame of a match or candle or smoke from a cigarette cigar or pipe 6 After it has been determined th...

Страница 16: ...EXCHANGER 5 TPRV 3 4 2 1 THERMOMETER GLOBE VALVE CHECK VALVE PRESSURE REDUCING VALVE W FAST FILL BYPASS EXPANSION TANK WITH AIR SCOOP AND AUTO AIR VENT PUMP LEGEND VALVE TEMPERATURE SENSOR 3 WAY VALV...

Страница 17: ...THROUGH 7 5 N NORMAL 7 6 THROUGH 17 H HARD OVER 18 17 1 PARTS PER MILLION 1 GRAIN HARDNESS PER GALLON KEY CAUTION THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND VALVING CHECK WITH LOCAL CODES A...

Страница 18: ...fluid in the piping system As a result no new minerals or oxygen is introduced into the system To ensure a proper operating temperature leading to long boiler life a flow rate has been established bas...

Страница 19: ...Hot Water Supply Piping Water Heater Follow the tank manufacturer s guidelines for completion of the hot water system connections feet 9 1m of full sized piping and a normal number of fittings Table...

Страница 20: ...pump The headloss shown is for the heater only and the user will need to add the headloss of the piping system to properly size the pump 4B 4 Combined Water potable Heating and Space Heating NOTE The...

Страница 21: ...ump to terminal 2 on the pump delay relay and 120V neutral to the 120V neutral circuit of the unit If the pump is 3 phase higher voltage than 120V or higher horsepower than 1hP the pump s starter or a...

Страница 22: ...temperature will be 155 F Set the manual reset high limit to 175 F Example Metric units If the heater s temperature control is set to 55 C and the temperature rise through the heater is 14 C the outle...

Страница 23: ...Rheos Boiler and Water Heater Page 23 Figure 16 Control Parameter Possible Interference Figure 17 Control Parameter Possible Interference...

Страница 24: ...tpoint which is 175 F in this example Therefore the throttling range will cause the Rheos to modulate between 50 and 100 of full fire between 175 F and 165 F Between 175 F and 180 F the unit will rema...

Страница 25: ...0 10VDC to indicate which terminal received the hot signal and which terminal receives the common signal from the controller The Rheos unit will modulate between 4 7V and 10V for 50 and 100 respectiv...

Страница 26: ...LAARS Heating Systems Page 26 Figure 18 Wiring Diagram Model 1200 Standard and Codes A C D F and G...

Страница 27: ...Rheos Boiler and Water Heater Page 27 Figure 19 Wiring Diagram Models 1600 2000 and 2400 Standard and Codes A C D F and G...

Страница 28: ...LAARS Heating Systems Page 28 Figure 20 Wiring Diagram Model 1200 Codes B and E...

Страница 29: ...Rheos Boiler and Water Heater Page 29 Figure 21 Wiring Diagram Models 1600 2000 and 2400 Codes B and E...

Страница 30: ...LAARS Heating Systems Page 30 Figure 22 Wiring Diagram Model 1200 Pump Mounted Standard and Codes A C D F and G...

Страница 31: ...Rheos Boiler and Water Heater Page 31 Figure 23 Wiring Diagram Models 1600 2000 and 2400 Pump Mounted Standard and Codes A C D F and G...

Страница 32: ...LAARS Heating Systems Page 32 Figure 24 Wiring Diagram Model 1200 Pump Mounted Codes B and E...

Страница 33: ...Rheos Boiler and Water Heater Page 33 Figure 25 Wiring Diagram Models 1600 2000 and 2400 Pump Mounted Codes B and E...

Страница 34: ...ems Page 34 Figure 26 Wiring Schematic Model 1200 Standard and Codes A C D F and G Figure 27 Wiring Schematic Models 1600 2000 and 2400 Standard and Codes A C D F and G Schematic Wiring Diagram Schema...

Страница 35: ...os Boiler and Water Heater Page 35 Figure 29 Wiring Schematic Models 1600 2000 and 2400 Codes B and E Schematic Wiring Diagram Figure 28 Wiring Schematic Model 1200 Codes B and E Schematic Wiring Diag...

Страница 36: ...gure 31 Wiring Schematic Models 1600 2000 and 2400 Pump Mounted Standard and Codes A C D F and G Schematic Wiring Diagram Figure 30 Wiring Schematic Model 1200 Pump Mount ed Standard and Codes A C D F...

Страница 37: ...Water Heater Page 37 Figure 33 Wiring Schematic Models 1600 2000 and 2400 Pump Mounted Codes B and E Schematic Wiring Diagram Figure 32 Wiring Schematic Model 1200 Pump Mount ed Codes B and E Schemati...

Страница 38: ...nstructions as to whether the make up water valve should be left open or closed 15 After placing the unit in operation the ignition system safety shutoff device must be tested First shut off the manua...

Страница 39: ...or warm up sequence starts and after all safety devices are verified the gas valve opens 14 Open gas orifice test port valves Check gas orifice differential at full fire and make note of the different...

Страница 40: ...e assemble 7 2 Appliance Maintenance and Component Description Only genuine Laars replacement parts should be used Caution Label all wires prior to disconnection when servicing controls Wiring errors...

Страница 41: ...ve the cover from the control panel Remove the electrical connectors from the ignition control Take out the controller s mounting screws and pull the controller out Replace in reverse order See Figure...

Страница 42: ...es of the heat exchanger is caused by one or more of the following incomplete combustion combustion air problems venting problems and heater short cycling Soot buildup or other debris on the heat exch...

Страница 43: ...or installations with IRI code requirements The valve opens when power is removed from the safety valves And the valve closes when the safety valves are powered See sections 3 1 Item 4 for installatio...

Страница 44: ...sphere To remove a switch remove the screw on the plastic housing and pull the clear cover off Disconnect the two wires from the screw terminals Twist the switch off the pipe nipple Reassemble in reve...

Страница 45: ...hould be 50 80 ohms If the resistance is not 50 80 ohms W replace the ignitor If the resistance is correct reset the boiler and check for 120 VAC at the ignitor plug during the start cycle If there is...

Страница 46: ...limit it the heating load should be redistributed to control it See Section 5 5 regarding controller setup If short cycling occurs in a water heater application it is probably caused by undersized pip...

Страница 47: ...ONENTS See Figures 40 and 41 25 Gas train assembly standard Nat R2011100 R2017400 R2017500 R2003200 25 Gas train assembly standard LP Nat R2011200 R2017600 R2017700 R2010400 25 Gas train assembly cont...

Страница 48: ...5 pack Control packs B and E RE2043500 RE2043500 RE2043500 RE2043500 not shown 64 Fuse holder qty of 5 RE2000300 RE2000300 RE2000300 RE2000300 65 Diagnostic lights kit R2005600 R2005600 R2005600 R2005...

Страница 49: ...r R2024600 R2024600 R2024600 R2024600 107 Flange pump gaskets hardware R2024700 R2024800 R2024700 R2024800 108 Shims pump bracket 10 ea R2013600 R2013600 R2013600 R2013600 109 Gaskets 10 pk R2013800 R...

Страница 50: ...50 Figure 39 Combustion Components 12 13 10 9 17 14 14 20 19 19 19 19 19 19 6 7 8 5 4 18 OR 19 18 OR 19 19 19 1 Complete Combustion Component Assembly 2 ASSEMBLY 3 14 15 16 14 21 18 OR 19 14 11 Hardw...

Страница 51: ...Rheos Boiler and Water Heater Page 51 Figure 40 Gas Train Combustion Air Components 47 48 48 55 56 52 48 41 42 43 44 45 46 49 50 54 48 48 51...

Страница 52: ...ack C Gas Train 57 53 26 28 OR 30 29 OR 30 31 31 35 36 OR 37 39 38 40 Control Packs B and E Gas Train Control Packs A and D Gas Train 57 53 For sizes 2000 Natural gas and 2400 For sizes 1200 1600 and...

Страница 53: ...Rheos Boiler and Water Heater Page 53 Figure 42 Electrical Components...

Страница 54: ...LAARS Heating Systems Page 54 Figure 43 Heat Exchanger Water Path Components 93 100 98 103 104 97 101 106 110 94 106 OR 108 107 107 OR 109 95 105 106 106 106 96...

Страница 55: ...er Page 55 Figure 44 Jacket Components 116 117 118 119 120 121 122 123 124 125 126 127 128 128 126 129 130 131 131 132 Jacket Hardware Kit 136 Jacket Retro fit Kit standard 137 Jacket Retro fit Kit mo...

Страница 56: ...Wiring Diagram Model 1200 Standard and Codes A C E F and G 26 Figure 19 Wiring Diagram Models 1600 2000 and 2400 Standard and Codes A C E F and G 27 Figure 20 Wiring Diagram Model 1200 Codes B and E 2...

Страница 57: ...Rheos Boiler and Water Heater Page 57...

Страница 58: ...LAARS Heating Systems Page 58...

Страница 59: ...Rheos Boiler and Water Heater Page 59...

Страница 60: ...rvice Advisors 20 Industrial Way Rochester NH 03867 603 335 6300 Fax 603 335 3355 Applications Engineering 1869 Sismet Road Mississauga Ontario Canada L4W 1W8 905 238 0100 Fax 905 366 0130 www Laars c...

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