Bryant 246 User Manual

The Bryant Model 246 is a low-pressure, cast-iron sec¬
tional boiler designed for use in water or steam
heating systems. The design is certified by the
American Gas Association for use with natural or
propane gas, The type S boiler can be used in steam
systems with a maximum working pressure of 15 psig.
The type W boiler can be used in water systems with a
normal working pressure of 30 psig and is available
for systems with working pressures of 50 psig or 100
psig when appropriate gauge and relief controls are
used.
All installations are subject to codes established by
local utilities or other authorities having jurisdiction.
This jurisdiction normally covers electrical wiring, gas
piping, flue specification and insulation of adjacent
combustible material where required clearances can¬
not be maintained. As a practical guide, use the
American National Standard Installation of Gas Ap¬
pliances and Piping Z21.30, and Bryant Form No.
39003D1 “Procedure for Gas Appliances”.
Read these instructions completely before beginning
the installation.
Cancels 39246D1 Rev 1 I 39246D9
H 11/15/71
It is recommended that the following step-by-step in¬
structions be followed for best assembly results.
Inspection
Locating the Boiler
Assembling the, Base
Assembling...the. Boiler Sections
Installing the Draft Hood
Manifold and Pilot Header Assembly
Installing Casing Panels
Boiler Header and Piping Installation
Steam and Water Trim' Controls
Gas Controls and Main Gas Connections
- -• -Eflectr i cal-Wiring— . — -.. .
Flue Connection and Venting
Firing Boiler and Control Adjustment
Servicing
Note: The terms “right-hand” and “left-hand”
whenever used in this installation instruction are
determined by facing the side of the boiler with the
manifold.
INSPECTION
The boiler is shipped knocked down. On the end of the
boiler fitting box there is a master copy of all
packages required to assemble the boiler. Each box
has a package number. Check to be sure all required
packages have been received. Also check the rating
plate for type of gas, input, voltage, etc., to be sure
Figure 1 - Model 246 Boiler
that all equipment furnished meets the requirements
of the installation. Any lubricant or pipe dope used ,
for gas valve or gas pipe connections, shall be
resistant to the action of propane.
LOCATING THE BOILER
The boiler should be centrally located with respect to
the distribution system and as close to the chimney as
possible.
This boiler is not intended for use on combustible
.floors,.When selecting the installation site, r emember .
it must have a firm, non combustible level foundation.
Construct a level concrete pad if necessary. If the
boiler base is not level, the sections will not align
properly and assembly difficulties will be encoun¬
tered.
If the Model 246 is to be used as a steam boiler and is
to be connected to another steam boiler, the factory
design waterlines of the two boilers must be equal
distance above floor level.
Combustion Air
APPLIANCES LOCATED IN
UNCONFINED SPACES
In unconfined spaces in buildings of conventional
frame, brick, or stone construction, infiltration nor-

Bryant 246 Specifications

General

Brand	Bryant
Model	246
Category	Boiler
Language	English

Summary

GAS-FIRED STEAM OR WATER BOILER

Inspection

Check required packages and rating plate for accuracy.

Locating the Boiler

Central location, firm noncombustible level foundation required.

Combustion Air

Air supply requirements for combustion and ventilation, including unconfined and confined spaces.

ASSEMBLING THE BASE

Assembling the Boiler Sections

Step-by-step guide for assembling boiler sections.

Steam Risers

Installation of steam risers for specific boiler sizes.

INSTALLING THE DRAFT HOOD

MANIFOLD AND PILOT HEADER ASSEMBLY

Assembling the manifold and pilot header.

INSTALLING CASING PANELS

Steps for installing the boiler casing panels.

BOILER HEADER AND PIPING INSTALLATION

STEAM AND WATER TRIM CONTROLS

Components for steam controls and their installation.

Water Controls

Components for water controls and their installation.

Gas Controls and Main Gas Connections

Gas Pressure Regulator

Explanation of the gas pressure regulator's function and adjustment.

D2 and D5 Gas Controls

Details on D2 and D5 gas controls and their thermocouple elements.

Electric Limit Control

Gas Piping

Recommendations for gas piping installation and joint compound.

ELECTRICAL WIRING

FLUE CONNECTION AND VENTING

Standard practices for installing flue pipe and venting.

FIRING BOILER AND CONTROL ADJUSTMENT

Lighting D4 and D6 Pilots

Procedure for lighting D4 and D6 pilot burners.

Lighting D2 and D5 D5 Pilots

Procedure for lighting D2 and D5 pilot burners.

SERVICING

Impurities in Boiler Water

Identifying and remedying impurities in boiler water.

CLEANING STEAM BOILERS

Procedures for cleaning steam boilers, including skimming.

CLEANING THE BOILER

Steps for cleaning the boiler's flue passages and bottom.