Job:
Raytherm™ Residentials
Hydronic Heating Boilers
Models 42-180
Engineer:
Contractor:
Prepared By:
Model:
Date:
Indoor/Outdoor:
Applications
Compact, Lightweight Design
ƒ Radiant Heating
ƒ Hydronic Space Heating
ƒ Snow Melting
Even the largest model slips
easily into tight spaces.
Easy to Plumb, Easy to Service
Inlet and outlet water piping, gas
connection, wiring and controls
are all up front for easy access.
High Efficiency
Heating efficiencies meet or
exceed NAECA standards.
Factory Installed Circulator
and Bypass
Safe Operation
Built-in manual reset safety
sensors shut down the boiler in
the event of a flame roll-out or
flue gas spillage. Normal working
pressure is 125 PSI max.
Thermostatically-controlled
circulator maintains proper flow
through the boiler. As a packaged
system, installation is fast and
easy.
Fast Response Temperature
Sensor
Electronic Ignition
Intermittent pilot ignition improves
system efficiency by using fuel
only when there is a call for heat.
Electronic solid state auto-reset
control shuts down the boiler in
the event of over-heating caused
by a low-flow condition.
Fig. #8942
Heat Exchanger
Controls
Gas Control Train
ƒ
ASME Inspected and Stamped
160 PSIG
National Board Approved
Glass-lined Cast Iron Headers
Copper Finned Tubing
ASME Steel Tube Sheet
Silicone O-Rings
30 PSIG ASME Pressure Relief Valve
Temperature and Pressure Gauge
Cast Iron Pump – 120 VAC, Mounted
Bypass Assembly
ƒ
ƒ
ƒ
120V, 60Hz, 1 Ph Power Supply
120/24V Transformer
Pilot
Electronic, Intermittent Ignition
(IID) - Standard
Standing (Thermocouple) -
Models 90, 135 and 180 only
100% Pilot Shut-off/Lockout (IID only)
High Limit Control
Operating Limit Control
Flow Sensor
Flue Gas Spillage Sensor
Flame Rollout Sensor
Automatic Vent Damper
ƒ
ƒ
ƒ
Fuel
Natural Gas
Propane Gas
Firing Mode
- On/Off - Models 42-66
- Two-stage Firing - Models 90-180
Combination Gas Valve
- Manual Shut-off
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
- Redundant Valve Features
- Gas Pressure Regulator
Construction
Non-Ferrous Options
All Bronze Pump, 120 VAC, Mounted
Bronze Fittings
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Indoor Construction
ƒ
ƒ
Enclosed Front Controls
Stainless Steel Burners
Polytuf Powder Coat Finish
Built-in Draft Diverter
AFUE Ratings*
Certified for combustible flooring
Model
0042
0066
0090
0135
0180
AFUE
84
83
83
83
83
*Tested with IID ignition and vent damper
Catalog No.: 2100.20M
Effective: 6-15-07
Replaces: 6-15-02
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