Installation Instructions

ManualsBrandsRichmond-Rheem ManualsPlumbingRichmond® Tankless Water Heater Recirculation Pump

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 import-

ant Safety Information.

WARNING: To avoid electrical shock, disconnect

the power supply to water heater and circulator. In-

stallation and service must be performed by a qualiﬁed

installer or service agency.

WARNING: It is very important that all persons who

are expected to install the pump read these instruc-

tions along with the instructions provided with 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, swim-

ming pool, solar, closed system, or with multiple water

heater installations. The maximum temperature setting

is 140°F in recirculation system.

WARNING: In the event the electrical box has been

pulled off of the 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 circulator unusable.

Hot Water Recirculating System

Installation Instructions

Shipment Information

Visually inspect the contents for any possible damage during shipment. Carefully remove pump from packaging so as not

to drop the pump. Verify that all included supplied parts are present as shown.

Recirculation Pump with built in check valve. (Supplied

with power cord - not shown.) - Qty 1

7/16” -14 Bolts - Qty 4

Flange Gaskets - Qty 2

7/16” -14 Nuts - Qty 4

Stainless Steel Flange with 3/4”

FNPT threads - Qty 2

Electrical box

Check valve

AP18071-1 (05/16)TACO PN # 001-4257

Summary of content (4 pages)

PAGE 1
Hot Water Recirculating System Installation Instructions 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, disconnect the power supply to water heater and circulator. Installation and service must be performed by a qualified installer or service agency.
PAGE 2
Pump Installation DO NOT install this pump outdoors. DO NOT energize pump until properly installed and system is checked for leak and completely filled. Pumps are designed to circulate water from 40°F to 150°F. Pump is rated for working pressure of 125psi. Electrical rating for pump is 115V, 1Ph, 60Hz. ! ! Pump is suitable for indoor application only. 6. Pump can be used with tankless water heater and equivalent pipe length up to 400 ft. Equivalent pipe length includes fittings, supply and return piping.
PAGE 3
13. Open the gas and incoming water shut off valves. 14. DO NOT start the pump until the system has been filled and leak checked. Pump should be flooded with water before it is started. Ground 11. Connect the ground wire (green color wire) to the green screw at the base of the water heater control board. ! nsure pump is properly grounded per National E Electrical Code and local codes or regulations. Ensure that water does not enter the terminal box during installation.
PAGE 4
Water Heater Models with Recirculation Logic *RTG-95DVL/XL-1 PH2-28RDV/OF-1 ECO200DV/X3-1 NH-208DV/X-1 *RTG-84DVL/XL-1 PH2-25RDV/OF-1 ECO180DV/X3-1 NH-188DV/X-1 *RTG-64DVL/XL-1 PH2-20RDV/OF-1 ECO150DV/X3-1 *RTGH-95DVL/XL-1 PHH-32RDV/OF-1 ECOH200DV/X-1 *RTGH-90DVL/XL-1 *RTGH-84DVL/XL-1 NH-209DV/X-1 ECOH180DV/X-1 PHH-25RDV/OF-1 ECOH160DV/X-1 NH-159DV/X-1 Some models could have “H” in model number to indicate high efficiency models. Applies to models with a suffix of “-1” or higher.