IMPORTANT GENERAL SAFETY INFORMATION - ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE
FOLLOWING INSTRUCTIONS.
DO NOT LIFT OR CARRY WATER HEATER BY THE TOP COVER. WATER HEATER DAMAGE OR PERSONAL
INJURY MAY OCCUR IF THE COVER BECOMES DETACHED.
READ CAREFULLY THE PRODUCT INSTALLATION, OPERATING AND MAINTENANCE MANUAL. FAILURE
TO FOLLOW THE INSTRUCTIONS AND WARNINGS IN THE MANUAL MAY RESULT IN SERIOUS OR FATAL
INJURY AND/OR PROPERTY DAMAGE, AND WILL VOID THE PRODUCT WARRANTY. THIS PRODUCT MUST BE INSTALLED
BY A QUALIFIED PROFESSIONAL. FOLLOW ALL APPLICABLE LOCAL AND STATE CODES AND REGULATIONS. IN THE
ABSENCE OF SUCH CODES, FOLLOW THE CURRENT EDITIONS OF THE NATIONAL PLUMBING CODE AND NATIONAL
ELECTRIC CODE, AS APPLICABLE.
THIS IS THE SAFETY ALERT SYMBOL. IT IS USED TO ALERT YOU TO POTENTIAL PERSONAL INJURY AND OTHER
HAZARDS. OBEY ALL SAFETY MESSAGES THAT FOLLOW THIS SYMBOL TO REDUCE THE RISK OF PERSONAL
INJURY AS WELL AS PROPERTY DAMAGE.
The heat transfer medium must be water or other nontoxic fluid having a toxicity rating or class of 1, as
listed in Clinical Toxicology of Commercial Products, 5th edition. The pressure of the heat transfer
medium must be limited to 30 PSIG by an approved safety or relief valve.
9040-694 (10/11)
1400 Division Road, West Warwick, RI 02893 T: 401.884.6300 F: 401.885.2567 www.amtrol.com
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
INSTALLER: LEAVE THIS MANUAL WITH THE OWNER
Models Covered:
HM-41Z & HM-80Z (Mechanical Control)
HM-41L & HM-80L (Ener-G-NET™ Digital Control)
INSTALLATION & OPERATION INSTRUCTIONS
HYDROMAX
™
INDIRECT-FIRED WATER HEATERS
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