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Laars
OEM Replacement Parts

CSI CONSERVATION SYSTEMS INC 407.351.9121    CONTACT    BACK    HOME
 
Laars Rheos+ RHHV Condensing/Modulating Boiler
Current Models: 1200 1600 2000 2400 MBH
Please call (407) 351-9121 or send a message for applicability, availability and pricing. Before contacting CSI, please write down your unit's complete model and serial number to help us identify the correct OEM replacement part(s) you require. An asterisk (*) indicates a part we normally keep on hand. Other OEM parts available by special order. Please read our Terms of Sale notice carefully before placing an order.

Rheos Installation & Operation Manual
  
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| Gas/Air System | Combustion System | Electrical System | Water System |

Gas/Air System
Igniter
RW2002300 Hot Surface Igniter & Gasket
Gas Trains (Natural Gas)
12B6000
16B6000
20B6000
24B6000
Gas Train Assembly 1200
Gas Train Assembly 1600
Gas Train Assembly 2000
Gas Train Assembly 2400 
Gas Trains (Propane Gas)
12B6020
16B6020
20B6020
24B6020
Gas Train Assembly 1200
Gas Train Assembly 1600
Gas Train Assembly 2000
Gas Train Assembly 2400 
Safety Valves
V2016800
R2003300
Automatic Fuel Shutoff Valve 1200
Automatic Fuel Shutoff Valve 1600- 2400
Modulating Valves
R2003600
R2003400
R2003500
V2015900
Complete Gas Valve 2000-2400
Gas Valve Actuator
Gas Valve Body 1200-1600
Gas Valve Body 2000-2400
Manual Shutoff Valves
V2003000
R2003700
Manual Gas Valve 1600-2400
Manual Gas Valve 2400
Gas Orifices (Natural Gas)
12B6200
16B6200
20B6200
R2003800
Gas Orifice Kit 1200
Gas Orifice Kit 1600
Gas Orifice Kit 2000
Gas Orifice Kit 2400 
Gas Orifices (Propane Gas)
12B6220
16B6220
20B6220
R2010500
Gas Orifice Kit 1200
Gas Orifice Kit 1600
Gas Orifice Kit 2000
Gas Orifice Kit 2400 
Gas Pressure Switches
R2004000
R2004100
High Pressure Switch
Low Pressure Switch
Combustion Air Components
R2004500 Air Filter
R2004400
R2004700
Air Filter Box Assembly with Gasket & Hardware
Air Filter Box Cover
R2012100
R2004900
Air Blower 1200
Air Blower 1600- 2400
12B5108
16B5108
20B5108
R2005100
Air Orifice 1200 (Natural Gas)
Air Orifice 1600 (Natural Gas)
Air Orifice 2000 (Natural Gas)
Air Orifice 2400 (Natural Gas) 

12B5128
16B5128
20B5128
R2010700

Air Orifice 1200 (Propane Gas)
Air Orifice 1600 (Propane Gas)
Air Orifice 2000 (Propane Gas)
Air Orifice 2400 (Propane Gas)
12B6100
R2012500
R2012600
Air Transition 1200
Air Transition 1600-2400
Air Blower Adapter Transition (1200 Only)
E0242900 Air Pressure Switch
Field Repair Kits
R2004200
R2004600
R2004800
R2012200
Gas Train Kit
Air Filter Gasket Kit
Air Filter Felt Gasket
Air Blower Gasket Kit
Other Components
R2004300
R2005300
Silicone Tubing
Sight Glass and Lens
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Combustion System
Combustion Chamber Assemblies
12B2000
16B2000
20B2000
24B2000
Combustion Chamber Assembly 1200
Combustion Chamber Assembly 1600
Combustion Chamber Assembly 2000
Combustion Chamber Assembly 2400
R2003000
R2002200
Combustion Chamber Gasket Kit
Combustion Chamber Hardware Kit
Gas Burners
L2012100
L2012000
L2011900
L2011800
Gas Burner 1200
Gas Burner 1600
Gas Burner 2000
Gas Burner 2400
R2013200
R2016500
R2016600
R2002300
Gas Burner with Gaskets 1200
Gas Burner with Gaskets 1600
Gas Burner with Gaskets 2000
Gas Burner with Gaskets 2400
R2002400 Gas Burner Gasket Kit
Flue Collector
R2011000
R2017000
R2002800
Flue Collector 1200-1600
Flue Collector 2000
Flue Collector 2400
R2002900 Flue Collector Gasket Kit
Miscellaneous Parts & Components
R2001100
R2002500
Base Assembly (Sheet Metal Weldment Only)
Tile & Insulation Kit
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Electrical System
Ignition Controls
R2005700 Automatic Electronic Ignition Control (CSD-1)
Temperature Controls
E2101400
E2314900
R2005800
R2005900
Temperature Control
Mixing System Temperature Control
Aquastat/Temperature Controller
Proportional Temperature Module
RE0015900 High-Limit Switch with Manual Reset
Other Components
RE2077700 EM2 Pump Relay
RE2043600 2A Fuse Kit (5-Pack)
30-280
E2305900
R0021300
R2005400
R2005500
Transformer 80A 115/24V (All Sizes)
Transformer 220-110VAC (All Sizes)
Transformer 40VA 115V/24V (All Sizes)
Transformer 115V/230V (1600-2400)
Transformer 24V/115V (All Sizes)
R2005600
R2005900
R2006000
R2006100
R2006200
E2311100
R2006300
R2006400
R2006500
R2006600
R2006900
R2007600
R2007700
R2012700
Diagnostic Lights Kit
Proportional Control Module
Delay on Make Timer
DPDT Relay (24V)
DPDT Relay (120V)
DPST Relay (120V)
DC Voltage Regulator
2-Position Terminal Block
4-Position Terminal Block
Temperature Control Sensor
Voltage Divider
Control Panel Hardware Kit
3-Way Toggle Switch
Control Signal Converter (1200 Only)
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Water System
Heat Exchanger Tube Assemblies
Copper Tubes
R2013300
R2017100
R2017200
R2013100
Tube Assembly 1200
Tube Assembly 1600
Tube Assembly 2000
Tube Assembly 2400 
CuproNickel (CuNi) Tubes
R2013301
R2017101
R2017201
R2003101
Tube Assembly 1200
Tube Assembly 1600
Tube Assembly 2000
Tube Assembly 2400 
Heat Exchanger Gaskets
S2011900
S2102500
S2102600
R2008200
Heat Exchanger Gasket 1200
Heat Exchanger Gasket 1600
Heat Exchanger Gasket 2000
Heat Exchanger Gasket 2400 
Header Covers
12A4200
16A4200
20A4200
24A4200
Pump-Mounted 1200
Pump-Mounted 1600
Pump-Mounted 2000
Pump-Mounted 2400 
Water Barriers
12B4100
16B4100
20B4100
24B4100
Water Barrier Assembly 1200
Water Barrier Assembly 1600
Water Barrier Assembly 2000
Water Barrier Assembly 2400
Water Pumps
A2109800 Water Pump
Pressure Relief Valves
A0002700
A0063600
A0000400
RA0001200
75 LB Pressure Relief Valve 1" x 1¼" NPT
75 LB Pressure Relief Valve ¾" x 1" NPT
125 LB Pressure Relief Valve 1" NPT
125 LB Pressure Relief Valve ¾" NPT
Condensing Heat Exchanger
S2014400
S2014300
Stainless Steel 1200/1600
Stainless Steel 2000/2400
Other Water System Components
RA0079000 Temperature & Pressure Gauge
A2109900
A2110000
2-Way Butterfly Valve
Valve Actuator
RE2074000
RE2058300
Temperature Control Immersion Well
High-Limit Immersion Well
R2008400 Water Flow Control Switch
RE2075100 Low-Water Fuel Cutoff Switch with Manual Reset
R2013500
R2013600
R2013700
R2013800
Pump Bracket 2400
Flange Gaskets & Bolts 2400
Shims (Package of 10) 2400
Gaskets (Package of 10) 2400
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Please call (407) 351-9121 or send a message for applicability, availability and pricing. Before contacting CSI, please write down your unit's complete model and serial number to help us identify the correct OEM replacement part(s) you require. An asterisk (*) indicates a part we normally keep on hand. Other OEM parts available by special order. Please read our Terms of Sale notice carefully before placing an order.

Rheos Installation & Operation Manual
  
Return to the Parts Menu
Specifications subject to change without notice.
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