Aqua-Flash Instruction Sheet
Effective 3/15/2018
IS-AM09-592
Kit No. AMH1K-6UVZT1 has Mechanical Timer & Kit No. AMH1K-6UVZT2 has Digital Timer
Patent Pending
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AquaMotion Inc
. 88 C Jefferson Blvd., Warwick, RI 02888 Tel: 401-785-3000 Fax: 401-785-3033
Copyright 2017
– AquaMotion Inc.
Printed in USA
Page 1 of 2
Aqua-Flash Kits for Tankless Applications without Built-In Pump in the Heater
Installation and Operating Instructions for Instant Hot Water Recirculation Systems
NSF 372 Approved
Thank you for choosing the Aqua-Flash Instant Hot Water Recirculation System by AquaMotion, Inc.
Please read and follow these step by step instructions to ensure that the system operates properly and reliably. Since the cold water supply line will be
used to return the cooling hot water to the hot water heater you will experience some warm water from the cold water line. Opening the cold water faucet
fully will flush the warm water from the cold line in a short period of time. After the Flash valve has been installed, the system will need to cycle through
from hot to cold several times or overnight before normal operation is established.
Warning: This is not an anti-scald valve.
Inspection
Inspect the system components to ensure no damage has occurred to them during shipping. Avoid dropping the circulator which may be damaged if
dropped.
The Aqua-Flash System includes:
AM6 AquaMotion Circulator with a built-in timer and a 10 Ft line cord.
AquaMotion Flash Bypass Valve
Bypass Tee 3/4
” FNPT x 3/4” MNPT x 3/8” OD Compression
Two 3/4" NPT Male Tail Pieces with 1
” Union Nuts and Gasket
5
’ Long 3/8” OD Copper Tubing
3/4” NPT x 3/4” NPT Nipple Check Valve (Preinstalled in Tee By-pass
Tee)
Tools Needed:
5/8” open end wrench
1
” open end wrench or an adjustable crescent wrench that opens to 1”
Two Pipe wrenches that opens to 1.5
”
Copper Tube cutter if you choose to shorten tubing
NFS Pipe Dope or Teflon Tape
Limits
Maximum water temperature 110
⁰
C/230
⁰
F
Maximum Pressure Rating 125 psi
Pump Installation
Warning: For Indoor Use Only
Warning: Do not plug the pump in until the pump install is complete.
Follow National and Regulation Plumbing Codes.
1)
Shut off the power or unplug the tankless heater. If no plug or switch is available, shut off the tankless heater at the breaker box.
2)
On gas fired tankless heaters, shut the gas valve off to the tankless heater.
3)
Shut off the cold water supply to the water heater. The valve may be on the cold supply line above the tank or located where the water line
enters the residence.
4)
Open a hot water faucet in the residence and allow the water to run until it stops. Leave the faucet open until the installation has been
completed.
5)
Remove the hot water line from the tankless heater at the threaded outlet port at the bottom or side of the tankless heater. Use a bucket or
basin to catch any water. (If installing the pump remotely from the heater, choose a location that will accommodate the pump and fittings.)
6)
Place
one of the 1” union nuts over one of the ¾” male tail pieces and thread the tail piece into the outlet port of the tankless heater (If
installing the pump remotely from the heater, thread the tail piece onto the outlet line of the tankless heater) using pipe dope or Teflon tape on
the threads.
7)
Allowing room f
or the pump (5”) thread the other tail piece and nut into the hot water line to the fixtures.
8)
Install the pump between the two union nuts with gaskets between the pump and the fittings.
9)
Remove cold water inlet line from the tankless heater at the threaded inlet port at the bottom or side of the tankless heater. Use a bucket or
basin to catch any water. (If installing the pump remotely from the heater, choose a location that will accommodate the Bypass Tee and Nipple
Check Valve).
10)
Thread the ¾” MNPT threads on the Tee into the inlet port of the tankless heater, thread the cold water inlet line into the ¾” MNPT threads on
the Nipple Check Valve using pipe dope or Teflon tape on the threads.
11) Install the copper tubing into the
3/8” OD compression fitting on the Tee (Use a tubing cutter if the tubing is too long) and tighten the
compression nuts. If using a
3/8” comp. x 3/8” comp. hose, discard the brass nuts and ferrules and attach the hose directly to the threads on
the pump and Tee.
12) Reopen the cold water supply valve to the hot tankless heater. Allow the water to run at the faucet to purge air from the lines. Close the faucet.
13) Check for leaks.
14) Turn on or plug in the power for the tankless heater.
15) Open the gas valve if it is a gas fired tankless heater.
16) Plug the circulator into a properly grounded 115V outlet. Set the timer, see Mechanical Timer Operation or Digital Timer sections.
