Raypak Gas Fired Boiler User Manual

USERS INFORMATION MANUAL
FOR GAS FIRED BOILERS
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
- Do not store or use gasoline or other flammable vapors and liquids or other combustible
materials in the vicinity of this or any other appliance. To do so may result in an explosion or
fire.
- WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service agency or the gas
supplier.
CAUTIONS: Propane gas is heavier than air and sinks to the ground. Exercise extreme care in lighting heater
in confined areas.
Do not use this boiler if any part has been under water. Immediately call a qualified service technician to
inspect the boiler and to replace any part of the control system and any gas control which has been under water.
Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the electrical supply
to the pump. Instead, shut off the gas supply at a location external to the appliance.
Raypak recommends that this manual be reviewed thoroughly before installing your Raypak Boiler. If there
are any questions which this manual does not answer please contact your local Raypak representative or the
factory.
OPERATING CONTROLS
Model W1 with On/Off Controls
The boiler is equipped with an adjustable tankstat. Set dial for desired temperature.
Models with Mechanical Modulation: H1, H5, W2, N, R
Sizes 133 through 1826. These boilers are equipped with modulating gas valves. They have one or more valves
in addition to the main electric gas valve. Their purpose is to adjust the firing rate to meet the required load. The
modulator will throttle the boiler input to meet the system demand. The valve has a remote capillary bulb immersed
in a well at the header outlet to maintain a constant outlet water temperature. When multiple valves are furnished,
they can be staged to give greater flexibility of control. Consult the dial setting tag attached to the control for your
desired water temperature.
MODULATING VALVE CHART —7000
TEMPERATURE —°F
N H
DIAL POSITION W R
Lo 110 150
1 117 157
2 124 164
3 130 170
4 137 177
5 143 183
6 150 190
7 156 196
8 163 203
Hi 170 210
Fig. # 8936.1
CATALOG NO.: 2000.52G
Effective: 06-01-00
Replaces: 07-01-94
P/N 240412
MODULATING VALVE (ROBERTSHAW)

Raypak Gas Fired Boiler Specifications

General

Brand	Raypak
Model	Gas Fired Boiler
Category	Boiler
Language	English

Summary

Operating Controls

Model W1 with On/Off Controls

Describes the adjustable tankstat for setting desired temperature.

Models with Mechanical Modulation

Details boilers with modulating gas valves for adjusting firing rate to meet load.

Limit Controls

High Limit

Manual reset high limit switch setting and function.

Flow Switch

Dual purpose control for pump failure or low water conditions.

100% Pilot Safety

Safety system closing main valve if pilot flame is interrupted.

Low Water Cutoff

Automatically shuts down burner when water level drops below probe.

High and Low Gas Pressure Switches

Switches sensing abnormal gas pressures to shut down burners.

Blocked Vent Shut-Off System

Shuts off main burner gas if venting system is blocked.

Flame Roll-Out Safety Shut-Off System

Shuts off main burner gas in case of sustained flame roll-out.

General Location of Controls

Start-Up Procedure

General Start-Up

Initial steps and precautions before starting the boiler installation.

Initial Start-Up - Pump and Motor

Procedures for checking and preparing the pump and motor for operation.

Lighting Instructions

Boilers with Manually Lit Pilots

Step-by-step guide for manually lighting the pilot on specific boiler models.

To Turn Off Gas to Appliance

Boilers with Automatically Lit IID Pilots and Manual Gas Valves

Safety Precautions

Essential safety warnings and procedures before operating the boiler.

Boilers with Automatically Lit C2/IRI Pilot and Manual Gas Valves

Lighting Instructions

Steps to light the pilot and start the boiler with automatic ignition.

To Shut Down

Procedures for safely shutting down the boiler.

Inspection Procedures

Burners

Guidelines for inspecting and cleaning the main burners and air louvers.

Controls

Checks to ensure all boiler controls are operating correctly.

Boilers with Automatically Lit C2/IRI Pilot and Automatic Gas Valves

Lighting Instructions

Steps for lighting the pilot and starting the boiler with automatic systems.

To Shut Down

Procedures for safely shutting down the boiler.

Inspection Procedures

Normal Inspection Procedures

Routine checks for boiler components like heat exchanger, burners, and controls.

Raypak Heating and Hot Water Supply Equipment Limited Warranty

Scope of Warranty

Defines what parts of the boiler are covered by the warranty.

Heat Exchanger Warranty

Details the warranty period for the heat exchanger against failure and thermal shock.

Other Parts Warranty

States the warranty period for other Raypak-manufactured parts.

Corporate Headquarters

Provides contact information for Raypak's main office.