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Catalog No.: 2000.26M Effective: 12-1-07 Replaces: 12-1-99
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EFFICIENT
82% thermal efficiency – highest of any atmospheric
boiler available today
THERMAL SHOCK PROOF
Twenty-year warranty against thermal shock damage
up to 150°F differential
Maximum operating temperature: 230°F
LIGHTWEIGHT
A floor load of 70 lbs./sq. ft. or less
HIGH RECOVERY
Cuts fuel costs substantially because the standby and
radiation losses normal to other boilers and tank-type
water heaters are eliminated
LOW WATER OPERATING TEMPERATURE
Operates with water temperature as low as 105°F
without condensing
Heat Exchanger
ASME Inspected and Stamped
160 PSIG
National Board Approved
Headers
Glass-lined Cast Iron – Standard
Bronze – Option A-1
Finned Tubing
Copper – Standard
Cupro Nickel – Option A-3
ASME Steel Tube Sheet
Silicone O-Rings
60 PSIG ASME Pressure Relief Valve
Temperature and Pressure Gauge
(Boiler)
Water Connections
Left Hand – Standard
Right Hand – Option A-6
Flow Configuration
Two-pass (Standard)
Single-pass (Cast Iron Only)
Controls
120V, 60Hz, 1 Ph Power Supply
120/24V Transformer
100% Pilot Shut-off/Lockout
Electronic, Intermittent Ignition (IID)
Pilot
High Limit Control, Manual Reset
High Limit Control, Auto Reset –
Models 3001-4001
On/Off Switch
Flow Switch
Economaster II Pump Time Delay
Gas Control Train
Manual Main Gas Shut-off Cock
Main Gas Pressure Regulator
Redundant Safety Shut-off Valve
Control Valve
Firing Mode
On/off (H4)
Two-stage Firing (H3)
Four-stage Firing (H9)
Motorized Modulation (H2)
B-6000 (H6)
Fuel
Natural Gas
Propane Gas
Design Certified ANSI Z21.13/
CSA 4.9
Construction
Front Controls
Stainless Steel Burners
Polytuf Powder Coat Finish
Built-in Draft Diverter
Draft Inducer
Motorized Draft Inducer –
Option D-2
Temperature Controllers
B-7 Modulating
B-5 Modulating, Outdoor Reset
B-6 Two-stage
B- Four-stage Digital
Y-241 Electronic Sequencer,
1-4 Stages
Y-281 Electronic Sequencer,
1-8 Stages
Additional Safety Controls
F-9 Low Water Cut-off Probe
I-1 High Limit Control,
Auto Reset
S-1 Low Gas Pressure Switch
S-2 High Gas Pressure Switch
Regulatory Agency Requirements
Raytherm
®
- Type H
Hydronic Heating Boilers
Commercial
Models 2100-4001 (Indoor)
Fig. 8184