7 Rinnai Circ-Logic™ with Grundfos Kit
Pump Installaon
A licensed professional must install the GTK15 kit.
The installer should have skills such as
connecng gas lines, water lines, valves, and
electricity
knowledge of applicable naonal, state, and local
codes
If you lack these skills, contact a licensed professional.
The pump supplied with your GTK15 kit is meant for
indoor installaons only. It is designed to circulate
water from 36°F to 150°F up to a maximum pressure of
145 PSI.
The proper operang voltage and other electrical
informaon can be found on the nameplate aached
to the top of the motor.
Posion of terminal box:
Proper installaon of the pump will have the terminal
box located to one side of the pump or the other, with
the conduit entry down. See Figure 3A.
The arrows on the side or boom of the pump housing
indicate direcon of ow through the pump.
GRUNDFOS circulators can be installed in both vercal
and horizontal lines. The pump must be installed with
the motor sha posioned horizontally. Under no
circumstances should the pump be installed with the
sha vercal or where the sha falls below the
horizontal plane. See Figure 3B.
It is recommended that isolaon valves be installed on
each side of the pump. If possible, do not install
elbows, branch tees, and similar ngs just before or
aer the pump. Provide support to the pump or
adjacent plumbing to reduce thermal and mechanical
stress on the pump.
Installaon
1. Thoroughly clean and ush the system prior to
pump installaon.
2. Do not install the pump at the lowest point of the
system where dirt and sediment naturally collect.
3. Install an air vent at the high point(s) of the system
to remove accumulated air.
4. Ensure that water does not enter the terminal box
during the installaon process.
5. Install the pump as shown on the system drawings;
the sucon side of the pump should be ooded
with water.
6. DO NOT START THE PUMP UNTIL THE SYSTEM HAS
BEEN FILLED AND CHECKED FOR LEAKS OR OTHER
POSSIBLE COMPONENT FAILURES.
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