Watts N45B Series Installation Instructions

Series N45B Installation Instructions
• Flush dirt and scale from supply pipe.
• Install regulator vertically or horizontally (upright or in
verted), but the regulator must be installed with the ar-
row in the direction of flow.
• Regulator is preset at 50 psi. To adjust, loosen locknut
and turn adjusting screw clockwise to increase,
counterclockwise to decrease.
• This regulator has
a,J
uilt-in thermal expansion bypass. If
the inlet pressure is higher than the discharge setting of the
water heater (typically 150 psi) or if there is a check valve or
backflow preventer installed on the line, you must make
provisions for pressure relief protection to protect your
plumbing system and its components. We suggest the use
of a model DET expansion tank, the Watts Governor 80
ball cock and thermal expansion relief valve, or a 530C cali-
brated pressure relief valve. (Send for folder F-RV, S-Therm
Expansion, or consult your plumbing professional).
CALIFORNIA PROPOSITION 65 WARNING
WARNING: This product contains chemicals
known to the State of California to cause cancer
and birth defects or other reproductive harm.
(Installer: California law requires that this
warning be given to the consumer.)
Fig. No. 1
Location of Installation
Su
Pressure
Regulator
Y
C.)
Cl)
No. 7
IS-N45B
No. 7
Backflow Preventer
To Fixtures
LIMITED WARRANTY: Watts Regulator company warrants each product against defects in mate-
rial and workmanship for a period of one year from the date of original shipment. In the event of
such defects within the warranty period, the company will, at its option, replace or recondition
the product without charge. This shall constitute the exclusive remedy for breach of warranty,
and the Company shall not be responsible for any incidental or consequential damages, includ-
ing without limitation, damages or other costs resulting from labor charges, delays, vandalism,
negligence, fouling caused by foreign material, damage from adverse water conditions, chemi-
cals, or any other circumstances over which the Company has no control. This warranty shall be
invalidated by any abuse, misuse, misapplication or improper installation of the product. THE
COMPANY MAKES NO OTHER WARRANTIE EXPRESS OR IMPLIED EXCEPT AS PROVIDED IN
THIS LIMITED WARRANTY.