MAXIDRY MAXI120, Installation Manual, Page: 21 / 30

113257-4 21
Water Information ____________________
Before You Start!
Check Local Codes And Permits
Call your local water company or the proper municipal
authority for information regarding local codes.
IMPORTANT: It is your responsibility to have all plumbing
connections made by a qualified professional to assure
that the plumbing installation is adequate and conforms to
local, state, and federal regulations or codes.
It is the installer’s or owner’s responsibility to see that the
necessary or required water, water pressure, pipe size, or
connections are provided. The manufacturer assumes no
responsibility if the fire suppression system is not
connected, installed, or maintained properly.
Installation
Requirements
The fire suppression system must be supplied with a minimum
water pipe size of 1/2” and be provided with 40 psi +/- 20 psi
(2.75 bar, 275 kPa +/- 1.37 bar, 137 kPa) of pressure. For
use of optional manual bypass, a second source with the
same piping and pressure requirements is required.
Flexible 1/2 feeds must be provided to avoid damage to
electric water solenoid valve by vibration.
IMPORTANT: Flexible supply line/coupling must be used.
Solenoid valve failure due to hard plumbing connections
will void warranty.
If the rear area of the dryer, or the water supply is located in
an area where it will be exposed to cold/freezing
temperatures, provisions must be made to protect these water
lines from freezing.
If the water in the supply line or water solenoid valve
freezes, the fire suppression system will be
inoperative!!
!
WARNING
The water solenoid valve has a 3/8” M.P.T. connection
supplied with a 3/4”-11.5 NH hose adaptor to provide the
minimum 1/2-inch supply (feed) line. Flexible supply line/
coupling must be used in an effort to avoid damaging the
electric water solenoid valve.
NOTE: The 3/4”-11.5 NH is a standard hose coupling
screw thread. It is not to be confused with 3/4” N.P.T. The
sealing of an NH connection is made with a washer
opposed to the mating threads of an N.P.T. assembly. The
two thread designs are not compatible.
IMPORTANT: Flexible supply line/coupling must be used.
Solenoid valve failure due to hard plumbing connections
will void warranty. It is recommended that a filter or
strainer be installed in the water supply line.
Typical Water Supply
IMPORTANT: Appliance is to be connected to the water
mains using a new hose set and the old hose set should
not be reused.
Water Connections
The water connection is made to the 3/4”-11.5 NH hose
adaptor of the electric water solenoid valve, located at the
rear upper midsection of the dryer (refer to the photograph).