Electrical; Venting; High Altitude; Safety Features - Berner GR Series Operating And Service Instructions

The appliance must be isolated from the gas piping system by closing equipment shutoff valve during
any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psi (305
Kpa)

Electrical

All heaters must be electrically grounded in accordance with the National Electric Code, ANSI/NFPA
70 in the USA and the Canadian Electric Code, CSA C22.1 in Canada, and must comply with all local
requirements.

Venting

Refer to the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) in the USA and CAN/CGA B149.1 and
B149.2 Installation Codes in Canada for proper location, sizing and installation of vents as well as
information on clearance requirements for conventional venting methods. See page 11 for horizontal
venting requirements.
This appliance shall not be connected to a chimney flue serving a separate solid-fuel burning
appliance.

High Altitude

When installing this appliance over 4500 ft. above sea level in Canada, the appliance must be properly
de-rated and installed according to local codes. In the absence of local codes the appliance must be de-
rated in accordance with the most recent CAN/CGA-B149 code.
In the United States for installations over 2000ft above sea level the appliance must be installed in
accordance with the Current National Fuel Gas Code, ANSI Z223.1/NFPA 54.

Safety Features

This heater utilizes an airflow switch as blocked vent shut off system. This system is designed to
prevent the operation of the appliance if a fresh air supply is blocked or if the flue exhaust is blocked.
If this system fails to operate DO NOT ATTEMPT ADJUSTMENTS. Disconnect power to the
appliance and contact a qualified service person.
Series GR Page 5
Introduction
February 10, 2014