Instructions / Assembly

Tankless Water Heater with Built-in Recirculating System
Supplemental Instructions
This tankless water heater is equipped with a demand based recirculation pump that is attached to the inlet fitting at the bottom of
the heater. The instructions below provide the suggested piping and installation information.
Local codes or plumbing authority requirements may vary
and take precedence over these instructions and diagrams
provided below.
Recognize this symbol as an indication of important
Safety Information.
WARNING: To avoid electrical shock, DO NOT connect
the tankless water heater and pump to the power supply
until the completion of the installation.
WARNING: Installation and service must be performed
by a qualified installer or service agency.
It is important that all persons who are expected to
install the pump read these instructions along with the
instructions provided with the tankless water heater.
CAUTION: The installation needs two power outlets
close to the unit as the power supply for the recirculation
pump is different from the tankless water heater.
CAUTION: Recirculation pump is for residential potable
water application only. Recirculation pump cannot be
used with an air handler, boiler, spa, swimming pool,
solar, closed system, or with multiple water heater
installations. The maximum temperature setting is 140°F
in recirculation system.
WARNING: In the event that the electrical box has been
pulled off of the pump motor housing, DO NOT attempt
to reattach it. Use of any other screw may short out the
stator windings, creating a risk of electrical shock.
CAUTION: When installing electrical connections,
DO NOT apply mechanical loads to the electrical box;
otherwise, retaining screws may be pulled out of the
housing, making the circulator pump unusable.
Shipment Information
Visually inspect the contents for any possible damage during shipment. Verify that all included supplied parts are present as shown.
AP18646 (04/17)
Figure 1
Pressure
relief valve
Push
button
Service valve for
hot water
Comfort Valve
(Supplier in kit. Contains hoses, mounting
hardware, and instructions)
Service valve for
cold water