Water Heater - Water Supply Connections

The HOT and COLD water connections are clearly marked and are ¾” NPT on all models. When connecting to the inlet/outlet ports, the use of ¾” female NPT tapered thread fittings with use of thread sealant is recommended.

Connecting the Water Supply to a Water Heater

The installation of unions is recommended on the hot and cold water connections so that the water heater may be easily disconnected for servicing if necessary. Piping should be routed to allow anode rod removal.

• Install a shut-off valve in the cold water line near the water heater. This will enable easier service or maintenance of the appliance later.
• Install a vacuum relief valve and/or anti-siphon device when required by local jurisdictions.

IMPORTANT: Do not apply heat to the HOT or COLD water connections. If sweat connections are used, sweat tubing to an adapter before fitting the adapter to the cold water connections on the water heater. Any heat applied to the hot or cold water connection will permanently damage the internal plastic lining in these ports. Install a vacuum relief valve and/or anti-siphon device when required by local jurisdictions.

Additional Support

Reference the Installation Instructions for your specific model for complete installation details and requirements.