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FOREWORD
The design of the GPG 540A through 740A models complies with
ANSI Z21.10.3/CSA 4.3 as an automatic circulating tank and an
automatic instantaneous type heater. The GPV 540A through
740A models are designed for sidewall venting and direct venting
applications and are certied under UL 795.
Detailed installation diagrams are found in this manual. These
diagrams will serve to provide the installer with a reference
for the materials and methods of piping necessary. It is highly
essential that all water, gas piping and wiring be installed as
shown on the diagrams.
Particular attention should be given to the installation of
thermometers at the locations indicated on the diagrams, as
these are necessary for checking the proper functioning of
the heater.
THE HEATER IS DESIGNED TO OPERATE ONLY ON
NATURAL GAS.
THESE HEATERS MUST NOT BE INSTALLED ON
COMBUSTIBLE FLOORS.
ROUGH-IN DIMENSIONS
STANDARD BAROMETRIC DRAFT CONTROL
GPG MODELS
HORIZONTAL & DIRECT VENTING
GPV MODELS
ALL DIMENSIONS IN INCHES (MILLIMETERS)
Gas Approx.
Models A B C D E F G H I Conn. Ship. Wt.
GPG/GPV 80 3/4 73 32 1/4 9 6 26 1/2 93 29 1/2 48 1/2 1* 950
540A 2,051 1,854 819 229 152 673 2,362 749 1,232 25.4 431 kg
GPG/GPV 80 3/4 73 32 1/4 9 8 26 1/2 93 29 1/2 48 1/2 1* 950
650A 2,051 1,854 819 229 203 673 2,362 749 1,232 25.4 431 kg
GPG/GPV 80 3/4 73 32 1/4 9 8 26 1/2 93 29 1/2 48 1/2 1* 950
740A 2,051 1,854 819 229 203 673 2,362 749 1,232 25.4 431 kg
*Minimum gas supply pipe is 1 1/4”, reference Table 7 for gas supply pipe size.
Storage Input Rating Recovery Rating Recovery Rating Current Draw
Capacity BTU/HR. GPH GPH 120V
Models U.S. Gals. (Litres) Nat. 100°F Rise 140°F Rise 60Hz 1 Phase
GPG/GPV-540A 85 (261) 540,000 523.6 374
GPG/GPV-650A 85 (261) 650,000 630 450
GPG/GPV-740A 85 (261) 740,000 718 512
Based on 80% thermal efciency obtained in State engineering laboratories.
NOTE: To compensate for the effects of high altitude areas above 2000 feet, recovery ratings should be reduced approximately
4% for every 1000 feet above sea level.
6.0 Amps
MAXIMUM TOTAL 75 EQUIVALENT
FEET INTAKE AND EXHAUST
ALLOWED.