Bunn nitron 2 Installation & Operating Manual - page 6
6
PLUMBING REQUIREMENTS
This dispenser must be connected to a FILTERED WATER source with operating pressure between 30 and 90 psi
(0.207 and 0.621 mPa) dynamic. This water source must be capable of producing a minimum flow rate of 2 fluid ounces
(88.7 milliliters) per second. A shut off valve should be installed in the line that will supply the dispenser. If installing a
water filter, it should be installed as close as possible to the inlet of the machine, but downstream of the shut-off valve.
The machine is supplied with a 3/8” (9.52 mm) male barb fitting.
NOTE- At least 18 inches (457 mm) of an FDA approved flexible beverage tubing, such asreinforced braided polyethylene,
before the dispenser will facilitatemovement to clean the countertop. BUNN-O-MATIC does not recommend the use of
saddle valves to install the dispenser. The size and shape of the hole(s) made in the supply line(s) by saddle valves may
restrict water flow.
If the water pressure is below 30 psi (dynamic) pressure, a booster pump (P/N 41815.1000) is required at the water
line. When installing a water filter and a booster pump, install the water filter in between the booster pump and the machine.
INITIAL SET-UP
The cold draft dispenser dimensions are 10"W x 28.4"D x 34"H. The dispenser is designed for indoor use only, in ambi-
ent temperatures ranging from 50°F to 90°F and 65% relative humidity environments. Avoid locating the machine where it
will be subject to direct sunlight or exposed to other external heat sources. Install the dispenser on a counter that is able to
support 150lbs (68 KG) of weight from the machine. Allow a minimum clearance of 6” at the back and top of the dispenser
for proper air circulation. Leave some space so the dispenser can be moved for cleaning. For optimum performance, do
not let warm air from surrounding machines blow on the dispenser.
As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of
the Food and Drug Administration (FDA), this equipment must be installed with adequate backflow prevention
to comply with federal, state and local codes. For models installed outside the U.S.A., you must comply with
the applicable Plumbing /Sanitation Code for your area.
NITROGEN GAS HOOK-UP
An N
2
high-pressure tank must also be available prior to installation (customer supplied). There must be suf-
ficient space for the cylinder and should be properly secured with a stand or chain to comply with local safety
codes.
The cold draft dispenser will need to be connected to an external Nitrogen (N
2
) source. This will require an N
2
pressure regulator to be installed at the tank with a gas supply line to the dispenser. The external N
2
supply con-
nection is a ¼” MFL located on the back of the machine.
The cold draft dispenser may also need connected to a nitrogen generator. The supply pressure from the genera-
tor to the machine should be set to 125 psi.
NOTE - If the customer is supplying their own regulator, the regulator should have a working pressure up to 130
psi. 6-feet of dedicated N
2
gas tubing line is required to connect the N
2
regulator to the machine. The gas tubing
line must be rated at least 130 psi and requires a ¼” FFL fitting at the end of the line to connect to the machine.
NOTE: For best drink consistency and nitrogen infusion, the nitrogen supply pressure to the machine should be
set to 125 psi and maintain +/-10 psi from the 125 psi pressure set point.
NOTE - To ensure safe N
2
operation and compliance with local safety codes, the N
2
cylinder must be properly
secured. A strap or chain should be used as a means of properly securing the cylinder.
NOTE - When the supply nitrogen pressure drops below 100 psi, a red light indicator will flash at the top of the
dispenser door.
NOTE - This dispenser is not designed to accept CO
2
gas.
54261.0001 090817