View brochure - Riverside Hydronics

3
ALL DUPLEX STAINLESS STEEL
CONDENSING BOILER
500 to 800 MBH
MEDIUM-MASS FIRE TUBE DESIGN
MODULATING BURNER - PREMIX LOW NOx
UP to 96% THERMAL EFFICIENCY AT FULL RATE
Riverside
RH Hydronics
®
H Y D R O N I C H E AT E N G I N E S
3
ALL DUPLEX STAINLESS STEEL
CONDENSING BOILER
MEDIUM-MASS DESIGN
Supply Connection
Modulating, Pre-Mix,
Low NOx Burner
Submerged, Duplex Stainless
Steel Combustion Chamber
Duplex Stainless Steel
Spiraled Fire Tubes
Duplex Stainless Steel
Pressure Vessel
Fiberglass Tank
Insulation (R12.5)
Condensate Collection Area
Return Connection
The M3 boiler contains a pressure vessel and fire
tubes fabricated entirely of duplex stainless steel.
The material is corrosion-proof in the presence
of condensate and the duplex vessel provides
additional protection against corrosion in installations
with less than optimal boiler water conditions;
including high dissolved oxygen and inadequate
makeup water treatment.
Vent Connection
Condensate Drain
TAdvantages of the M3 Medium Mass Design
Less critical and lower minimum flow rate compared to low-volume instantaneous boilers. This allows better
integration of M3 boilers into building heat loops with VFD pumping systems where the aim is to reduce building flow to minimal
levels whenever possible. With instantaneous water tube boilers, there is often incompatability between the flow rate requirements of the boilers and the building. This forces a more expensive primary-secondary piping approach in almost all applications and can limit load sharing among several boilers at low fire.
Built-in buffer tank means fewer boiler cycles. The tank helps smooth out boiler system operation during times of
low heat demand by providing the loop water volume needed to prevent short cycling. With instantaneous boilers, additional
buffer tanks are often added to the boiler loop because the lack of system water volume often undermines high turndown ratios.
A superior heat exchanger and medium-mass design combined with a reliable turndown ratio provide
remarkably high efficiency in all boiler system types.
M3 Boiler
Efficiency with Low Temperature Heat Pump Loops
M3 Boiler
Efficiency with Traditional Hydronic Heating Set-Back
100°F to 120°F
65°F to 85°F
BTU Input
Full Fire
Low Fire
BTU Input
Full Fire
Low Fire
500,000
98%
99+%
500,000
96%
98%
650,000
98%
99+%
650,000
96%
98%
750,000
98%
99+%
750,000
95%
97%
800,000
97%
99+%
800,000
94%
96%
ELECTRONIC CONTROL OPTIONS
APPLICATION FLEXIBILITY
SUPPLY
RETURN
M3 boilers will utilize the TempTrac® electronic operating
control, which includes the following operating modes and
features:
■ Set point operation
■ Nighttime setback
■ MODBUS RTU serial
connection for monitoring
and overwrite by a building
automation system
■ LED readout of supply and return
temperatures
■ BAS connectable through Modbus
RTU protocol with full read-write functionality
PRIMARY-ONLY PIPING
For traditional heating loops with VFD building
pumps, M3 boilers are piped primary-only with isolation
valves on each boiler. The extremely low minimal flow
requirements and the turndown capability of the M3 boilers complement the turndown capability of the VFD,
helping to maximizing the overall efficiency of these variable
flow pumping systems.
For multiple boiler installations with
building automation communication over
network connection, we recommend the
Riverside Hydronics OnTrac® multiple
boiler controller with Modbus TCP/IP
protocol via an Ethernet port. This PID
controller has a full-color, touch-screen
programmable user interface. It is capable of providing operating history and real-time reporting of
boiler operation including firing rate percentage and alarm
status. OnTrac communicates with each boiler’s TempTrac
control through a serial connection using Modbus RTU. A
simple, 2-wire daisy chain connects all boilers. Customized
gateways are available for Bacnet and Lonworks.
SUPPLY
RETURN
VENTING FLEXIBILITY
M3 boilers vent under positive pressure through up to 150
equivalent feet. Concurrently, the boilers can accept direct
combustion air through up to 150 equivalent feet of vent.
Vents can be directed through the wall or through the roof.
Room combustion air is also acceptable. Vents can terminate
in different pressure zones.
PRIMARY-SECONDARY PIPING
For heat pump loops where the building loop is often high
mass and high flow, M3 boilers can be piped primary-secondary with individual pumps on each boiler. Low pressure drop
through the medium-mass design reduces pump horsepower
and electrical consumption.
NO FLOW CONDITIONS
Some boiler systems are designed with occassional
no-flow conditions. Although a minimum flow is recommended, M3 boilers can be adapted for a no-flow
boiler loop designs. Contact your Riverside Hydronics representative for application assistance.
3
ALL DUPLEX STAINLESS STEEL - CONDENSING BOILER
Model No.
Btuh
Input
Btuh
Output
Thermal
Efficiency
500 WB 130A-CBML
500,000
480,000
96%
600 WB 130A-CBML
600,000
570,000
95%
650 WB 130A-CBML
650,000
617,500
95%
700 WB 130A-CBML
700,000
665,000
95%
750 WB 130A-CBML
750,000
705,000
95%
800 WB 130A-CBML
800,000
752,000
94%
Minimum
Gas Pressure
"W.C.
3.5
11
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Return Connection
2" NPT (at bottom)
Gas Connection
(made from the top)
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Top Access Opening
Combustion Air
Connection
5-7/8" O.D.
81
4
Electrical
Enclosure
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52
33 43
12
4
Removable
Top Section
for Doorway
Clearance
8043
Pressure
Relief
Valve
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Return Connection
2" NPT
(on back)
7541
6" @ 150 eq. ft.
STANDARD EQUIPMENT and FEATURES
Vent Connection 5-7/8" O.D.
Supply Connection
2" NPT
(from top)
Vent Diameter and
Equivalent Feet
4" @ 100 eq. ft.
Output Btu/h and thermal efficiency are derived from testing
per the requirements of DOE 10 CFR 431 (Federal Energy Policy Act: EPACT)
Dimensions are in inches unless otherwise indicated
Empty weight 680 pounds. Shipping weight 880 pounds. Operating wieght 1800 pounds
60°
Amps
@ 120VAC
Drain Valve 1" NPT
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Condensate Drain
3/4" FNPT PVC
▪
ASME H Stamped and National Board
Registered for 100 psi MAWP. Maximum
operating temperature 210°F
ASME pressure relief valve
Drain valve
Cleanout/Inspection fittings
Insulated with 3" fiberglass R12.5
Pressure gauge
Pre-mix burner with proportional gas/air
control and variable-speed blower
Modulates up to 4-to-1
Electronic ignition control
with pre- and post-purge
Programmable electronic operator with
temperature readout
Firing cycle status indication
Manual-reset high-limit
Manual-reset, electronic low-water cutoff
with test switch
Flame failure audible alarm and
indicating light
High and low gas pressure switches
Alarm on any failure
Seamless VFD modulation
MODBUS protocol on operating control
through a 485 serial connection
Remote on-off terminals
Remote alarm notification through
contacts and serial connection
CSD-1 compliant
Vent
Connection
12
10
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FRONT VIEW
SIDE VIEW
RH Riverside
Hydronics
®
H Y D R O N I C H E AT E N G I N E S
34-1113 3-2014
RIVERSIDE HYDRONICS, LLC ∙ FORT WORTH, TEXAS ∙ (800) 990-5918 ∙ www.riversidehydronics.com