Catalog No.: 2100.20M
Effective: 6-15-07
Replaces: 6-15-02
Job:
Engineer:
Contractor:
Prepared By:
Date:
Model:
Indoor/Outdoor:
Applications
Radiant
Heating
Hydronic Space Heating
Snow
Melting
High Efficiency
Heating efficiencies meet or
exceed NAECA standards.
Factory Installed Circulator
and Bypass
Thermostatically-controlled
circulator maintains proper flow
through the boiler. As a packaged
system, installation is fast and
easy.
Electronic Ignition
Intermittent pilot ignition improves
system efficiency by using fuel
only when there is a call for heat.
Compact, Lightweight Design
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.
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.
Fast Response Temperature
Sensor
Electronic solid state auto-reset
control shuts down the boiler in
the event of over-heating caused
by a low-flow condition.
Heat Exchanger
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
Non-Ferrous Options
All Bronze Pump, 120 VAC, Mounted
Bronze
Fittings
Controls
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
Gas Control Train
Fuel
Natural Gas
Propane Gas
Firing
Mode
- On/Off - Models 42-66
- Two-stage Firing - Models 90-180
Combination Gas Valve
- Manual Shut-off
- Redundant Valve Features
- Gas Pressure Regulator
Construction
Indoor
Construction
Enclosed Front Controls
Stainless Steel Burners
Polytuf Powder Coat Finish
Built-in Draft Diverter
Certified for combustible flooring
Raytherm™ Residentials
Hydronic Heating Boilers
Models 42-180
AFUE Ratings*
Model AFUE
0042 84
0066 83
0090 83
0135 83
0180 83
*Tested with IID ignition and vent damper
Fig. #8942
