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IMPORTANT NOTE
THESE INSTRUCTIONS MUST BE READ
AND UNDERSTOOD BEFORE INSTALLING,
COMMISSIONING, OPERATING OR
SERVICING EQUIPMENT
INSTALLATION, COMMISSIONING AND
SERVICING INSTRUCTIONS
Gas-fired condensing water heater
DORCHESTER DR-SG
Models
20-210, 25-210, 30-210,
35-356, 50-356, 60-356,
70-538, 80-538, 100-538, 120-538