Users Guide

1
Installers and operating personnel
MUST, at all times, observe all safety
regulations.
The following general warnings and cautions
must be given the same attention as specific
precautions included in these instructions. In
addition to the requirements included in this
Manual, the installation MUST conform with
local building codes, or, in the absence of
local codes, ANSI Z223.1 (National Fuel Gas
Code Publication No. NFPA-54). Where ASME
CSD-1 is required by local jurisdiction, the
installation must conform to CSD-1.
Where applicable, the equipment must be
installed in accordance with the current
Installation Code for Gas Burning Appliances
and Equipment, CGA B149, and applicable
Provincial regulations for the class. Authorities
having jurisdiction should be consulted before
installations are made.
IMPORTANT
This Instruction Manual is an integral part
of the product and must be maintained in
legible condition. It must be given to the
user by the installer and kept in a safe
place for future reference.
DANGER!
INDICATES THE PRESENCE OF A HAZARDOUS
SITUATION WHICH, IF IGNORED, WILL RESULT IN
DEATH, SERIOUS INJURY OR SUBSTANTIAL PROP-
ERTY DAMAGE.
WARNINGS!
MUST BE OBSERVED TO PREVENT SERIOUS IN-
JURY OR SUBSTANTIAL PROPERTY DAMAGE.
CAUTIONS!
Must be observed to prevent damage or
loss of operating effectiveness.
NOTICE
Indicates special instructions on instal-
lation, operation or maintenance, which
are important to equipment but not re-
lated to personal injury hazards.
WARNING!
BEFORE ATTEMPTING TO PERFORM ANY MAIN-
TENANCE ON THE UNIT, SHUT OFF ALL GAS AND
ELECTRICAL INPUTS TO THE UNIT.
WARNING!
THE EXHAUST VENT PIPE OF THE UNIT OPER-
ATES UNDER A POSITIVE PRESSURE AND THERE-
FORE MUST BE COMPLETELY SEALED TO PRE-
VENT LEAKAGE OF COMBUSTION PRODUCTS INTO
LIVING SPACES.
WARNING!
FLUIDS UNDER PRESSURE MAY CAUSE INJURY
OR DAMAGE TO EQUIPMENT WHEN RELEASED.
B
E SURE TO SHUT OFF ALL INCOMING AND OUT-
GOING WATER SHUT OFF VALVES. CAREFULLY
DECREASE ALL TRAPPED PRESSURES TO ZERO
BEFORE PERFORMING ANY BOILER MAINTE-
NANCE.
WARNING!
DO NOT USE MATCHES, CANDLES, FLAMES, OR
OTHER SOURCES OF IGNITION TO CHECK FOR
GAS LEAKS.
CAUTION!
Many soaps used for gas pipe leak test-
ing are corrosive to metals. The piping
must be rinsed thoroughly with clean
water after leak checks have been com-
pleted.
Warnings and Cautions
GF-125U