Pump Installation - Rinnai Circ-Logic Series Manual

Pump Installation

A licensed professional must install the GTK15 kit.
The installer should have skills such as

connecting gas lines, water lines, valves, and
electricity

knowledge of applicable national, state, and local
codes
If you lack these skills, contact a licensed professional.
The pump supplied with your GTK15 kit is meant for
indoor installations only. It is designed to circulate
water from 36°F to 150°F up to a maximum pressure of
145 PSI.
The proper operating voltage and other electrical
information can be found on the nameplate attached
to the top of the motor.
Position of terminal box:
Proper installation 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 bottom of the pump housing
indicate direction of flow through the pump.
GRUNDFOS circulators can be installed in both vertical
and horizontal lines. The pump must be installed with
the motor shaft positioned horizontally. Under no
circumstances should the pump be installed with the
shaft vertical or where the shaft falls below the
horizontal plane. See Figure 3B.
It is recommended that isolation valves be installed on
each side of the pump. If possible, do not install
elbows, branch tees, and similar fittings just before or
after the pump. Provide support to the pump or
adjacent plumbing to reduce thermal and mechanical
stress on the pump.
Installation
1. Thoroughly clean and flush the system prior to
pump installation.
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 installation process.
5. Install the pump as shown on the system drawings;
the suction side of the pump should be flooded
with water.
6. DO NOT START THE PUMP UNTIL THE SYSTEM HAS
BEEN FILLED AND CHECKED FOR LEAKS OR OTHER
POSSIBLE COMPONENT FAILURES.
7 Rinnai Circ-Logic™ with Grundfos Kit