Weil-McLain CG-4 User Manual

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UlEIL-flldAIN
CG (Series 11) and CGX (Series 1) Gas-Fired Boilers
Boiler Manual
Includes:
• Installation
• Start-up
• Service
• Boiler Parts
Refer to Control Supplement
for additional information
and Gas Control Parts
For Natural or Propane Gas
BOILER MANUAL FOR USE BY A QUALIFIED CONTRACTOR
To the owner: Regular service on this boiler is recommended and should be performed by a qualified
contractor.
To the installer: Read all instructions and warranty before starting.
Any claims for damage or shortage in shipment must be filed immediately
against the transportation company by the consignee.
Part No. 550-110-630/0695DCP

Weil-McLain CG-4 Specifications

General

Brand	Weil-McLain
Model	CG-4
Category	Boiler
Language	English

Summary

Section I: Pre-Installation

COMBUSTION AIR AND VENTILATION OPENINGS

Requirements for providing adequate air for proper combustion and ventilation.

CHIMNEY OR VENT REQUIREMENTS

Guidelines for installing and sizing chimney or vent systems for safe exhaust.

SELECT THE BOILER LOCATION

INSTALLATION CLEARANCES

Section II: Boiler Set-Up

PLACING THE BOILER

Step-by-step instructions for safely removing and positioning the boiler.

HYDROSTATIC PRESSURE TEST

Procedure for testing the boiler for leaks at 1.5 times working pressure.

DRAFT HOOD INSTALLATION

BREECHING ERECTION

Section IV: Gas Piping

For natural gas:

Specifications and tables for sizing natural gas supply piping.

For propane gas:

Considerations and guidance for sizing propane gas supply piping.

Section VI: Final Adjustments

WATER TREATMENT

Importance of water treatment and avoiding petroleum-based compounds.

FREEZE PROTECTION

FILLING SYSTEM

Steps for properly filling the boiler and hydronic system with water.

TO PLACE IN OPERATION

Instructions for safely starting up the boiler after installation.

CHECK BURNER FLAMES

INSPECT VENTING SYSTEM

Section VII: Check-out Procedure