Connection Diagram; Checklist For Plumbing - Rinnai Rur98I Manuel D'installation Et D'utilisation

Connection Diagram

Cold water inlet
with filter
Pump drain plug
Hot water outlet with
bypass plug (or
bypass filter)
Condensate trap drain plug
Connect Water Heater to Water Supply
Water connections to the tankless water heater
should follow all state and local plumbing codes.
If this is a standard installation, refer to the "Piping
Diagram for Basic Installation" in this manual.
1. Plumb water supply to the tankless water heater
on the 3/4" MNPT connection at the bottom of
the unit marked "Water Inlet", which is the cold
water supply.
2. Plumb the building hot water supply to the 3/4"
MSPT connection marked "Water Outlet", which
is the hot water supply.
If a pipe cover will be installed, make sure water lines
to the water heater fit properly.
Installation of a potable water thermal expansion tank
is required.
Condensate drain line

Checklist for Plumbing

□
Purge the water line of all debris and air by closing
the hot isolation valve and opening the cold
isolation valve and its drain. Debris will damage
the water heater. Use a bucket or hose if
necessary.
□
Ensure that hot and cold water lines are not
crossed to the unit and are leak free.
□
Ensure that a pressure relief valve is installed with
a rating that exceeds the BTU input of the water
heater model. Refer to the rating plate on the
side of the water heater for BTU input.
□
Clean the water filter(s) by closing the cold and
hot water inlet isolation (shut-off) valves. Put a
bucket under the filter(s) at the bottom of the
water heater to catch any water that is contained
inside the unit. Unscrew the water filter(s). Rinse
the filter(s) to remove any debris. Install the
filter(s) and open the isolation valves.
□
Check for proper water pressure to the water
heater. Minimum water pressure is 50 psi. Rinnai
recommends 60-80 psi for maximum
performance.
□
Ensure thermal expansion tank is properly
installed per local codes.
KBP Series Manual
Water drain plug
Check valve drain plug
Gas connection
41