Raypak 181-401 - Manual
Raypak 181-401 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Catalog No.: 2000.203E
Effective: 12-1-07
Replaces: 4-1-05
Job:
Engineer:
Contractor:
Prepared By:
Date:
Model:
Indoor
LOW NOx
Less than 40 nanograms per joule
EFFICIENT
82% 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
Cast Iron Glass-lined – Standard
Bronze – Option A-1
Finned
Tubing
Copper – Standard
Cupro Nickel – Option A-3
ASME Steel Tube Sheet
Silicone
O-Rings
ASME Pressure Relief Valve
45 PSIG – Standard
PSIG ASME – Optional
Temperature and Pressure Gauge,
Shipped Loose
Water
Connections
Left Hand – Standard
Right Hand – Option A-6
Flow Configuration – Two-pass
Pump – Optional
Mounted, 1/8 HP
,
120 V, 1
∅
,
60 Hz
Controls
120V, 60Hz, 1 Ph Power Supply
120/24V
Transformer
100% Pilot Shut-off/Lockout
Electronic,
Intermittent Ignition (IID) Pilot
Controls (cont'd)
High Limit Control, Manual Reset
On/Off
Switch
Flow
Switch
Economaster II Pump Time Delay
Gas Train
Natural
Gas
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)
Design
Certified
ANSI Z21.13 H Stamp
Construction
Front
Controls
Stainless Steel, Fan-Assisted
Burners
Polytuf Powder Coat Finish
Draft
Diverter
Base – Optional
Combustible Floor Shield –
Option J-1
Temperature Controls
B-6
2-stage Aquastat –
100-200ºF
B-26 2-stage Digital Controller
B-27 2-stage Digital Controller,
Outdoor Reset
Y-241 Electronic Sequencer,
1-4 Stages
Y-281 Electronic Sequencer,
1-8 Stages
Additional Safety Controls
F-10 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
Models 181-401 - Indoor
Low NOx
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