Watts 596816 - Manual (Page 3)

Pump Mounting: For Indoor Use Only
1. Close the supply water valve to the water heater
located, in most cases, above the water heater on
the cold water inlet to the hot water heater.
2. Drain the water from the hot water pipe by opening
a hot water faucet in the house. Let the water run
until it stops flowing. Then drain remaining water
from hot water heater spigot. Leave the faucet in the
house open until pump installation is complete. If
water does not stop flowing, check to make sure the
water to the hot water heater has been completely
shut off.
3. Disconnect the hot water heater at the hot water
discharge. (see Picture #1)
4. Install pump onto the water heater discharge,
using the 3/4" female fitting. The pump should be
installed so that the pump is pumping away from the
hot water heater, towards the house. Confirm the
direction of pumping by observing the flow arrow on
the side of the pump housing (See Picture #2). Be
sure that the pump is not touching the exhaust vent
piping (chimney) of a gas or oil fired hot water heater.
5. Connect the hot water line to the 3/4" NPT
discharge of the pump. Use pipe dope or Teflon tape
to seal threads when connecting to a 3/4 female
NPT connection. If a gasketed flexible copper water
heater connector is used, pipe dope or Teflon tape is
not required.
Page 3
Picture 1
disconnect
Picture 2
direction of water
6. Reopen the supply valve to the hot water heater and allow the water to run until all
the air has been purged from the piping.
7. Close faucet inside the house.
8. Plug the line cord of pump into a 115V outlet. Be sure to route the power cord so
that it does not touch the exhaust vent piping of a gas or oil fired hot water heater.
9. Using the timer (see pg. 6), set the pump to operate around your peak use times.
(ie. 30 minutes before the first shower until 15 minutes after last shower).
Water Heater Checklist
Electric Water Heater
Turn off Power to your Water Heater.
(turn off power at breaker box)
Gas Water Heater
Turn off the Gas to your water heater and
insure that the pilot light is not burning.
PUMP INSTALLATION
DO NOT
Mount Motor Shaft
in Vertical Position