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Laars
Rheos+
Condensing Boiler/Water Heater
Fully-modulating, fully condensing, compact, sealed
combustion, low NOx and up to 98% efficient.LAARS Heating Systems engineers designed the RHEOS+
boiler/water heater to provide ultra-high
performance and superior efficiency. They are the
ideal choice for demanding commercial jobs requiring
1.2 to 2.4 million BTU/hour. Seamless combustion
modulation from 25 to 100 percent of full input
maintains maximum efficiency and helps cut operating
costs as much as 50 percent. The heart of every LAARS RHEOS+ boiler/water heater is the patented,
double-row, copper-finned tube heat exchanger and a
48-row stainless steel economizer that maximizes
water heating surface area. Coupled with a powerful
stainless steel burner and an industrial grade gas
control system, this design delivers the highest
heat transfer per square foot of floor space
available. With its compact through-the-door design, NOx emission levels of less than10ppm, and controls
that automatically adjust boiler performance to meet
the required heating load, the RHEOS+ is a truly
innovative and virtually perfect breakthrough in
commercial heating.
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Specifications
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Model (Size) |
1200 |
1600 |
2000 |
2400 |
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Input - High
Fire |
1,200 MBTU/h |
1,600 MBTU/h |
2,000 MBTU/h |
2,400 MBTU/h |
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Output - High
Fire |
1,080 MBTU/h |
1,440 MBTU/h |
1,800 MBTU/h |
2,160 MBTU/h |
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Input - Low
Fire |
300 MBTU/h |
400 MBTU/h |
500 MBTU/h |
600 MBTU/h |
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Output - Low
Fire |
270 MBTU/h |
360 MBTU/h |
450 MBTU/h |
540 MBTU/h |
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Electrical
(Boiler) |
120V/single
phase/20A |
120V/single
phase/20A |
120V/single
phase/20A |
120V/single
phase/20A |
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Electrical
(Pump) |
120V/230V/single phase |
120V/230V/single phase |
120V/230V/single phase |
120V/230V/single phase |
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Weight |
1420lbs |
1465lbs |
1495lbs |
1550lbs |
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Up to top
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Standard Equipment |
- Water
flow switch
- Low
water cutoff with test light and manual
reset button
- Manual
reset high limit
- High
gas pressure switch
- Low
gas pressure switch
- Air
pressure switch
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Low-fire start time delay
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Modulation capabilities down to 25% of
full fire
- ASME
CDS-1
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- Leak
test valve
- Manual
firing valve
- ASME
160 lb. w.p. heat exchanger
- Less
than 10ppm NOx
- Pump
mounted
- Pump
time delay (adjustable 0.1-10min.)
- 75 psi
relief valve (RHHH+)
- 125
psi relief valve RHHV+
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Temperature and pressure gauge
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Indicator/status lights for: Power On,
Call for Heat; Pre-Purge; Burner On;
Ignition Failure
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Selector switch for internal or external
(0-10VDC) control
- 100%
lockout ignition control
- Copper
primary heat exchanger
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Stainless steel secondary heat exchanger
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Internal water mixing system to allow
minimum 70°F
water inlet
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Optional
Equipment |
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Factory-installed LON or N2 (Metasys)
card for communicating inlet water
temperature, outlet water temperature,
mixing system temperature, extra
temperature (user-chosen), low mixing
system temperature alarm, burner on/off
status
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- Cupro-nickel
primary heat exchanger
- Hard
water pump (water heaters only)
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Normally open vent valve
- Alarm
bell
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Additional motorized safety valve with
proof of closure
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Additional solenoid safety valve
- 200°F
max temperature controls (KY Code)
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Ignition module with three attemps
(non-CSD-1)
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Up to top
We can only sell new Laars boilers and
water heaters inside our Indiana, Illinois, and Kentucky
territory.
If you are located elsewhere, you will need to contact the
representative in your area for pricing.
List
of Laars representatives by state
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