WFR113539-13 www.adclaundry.com 29
Installation
Water Supply
The fire suppression system must be supplied with a minimum
water pipe size of 1/2-inch (12.7 mm) and be provided with 40
psi +/- 20 psi (2.75 bar +/- 1.37 bar) of pressure.
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.
!
WARNING
If the water in the supply line or water solenoid valve
freezes, the fire suppression system will be
inoperative!!
Water Connections
The water connection is made to a 3/4”-11.5 NH hose or 3/4”
B.S.P. adaptor, depending on the destination country. A 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., or 3/4
B.S.P. The sealing of an NH connection is made with a
washer as opposed to the mating threads of an N.P.T. or
B.S.P. assembly. The 3 thread designs are not compatible.
It is recommended that a filter or strainer be installed in the
water supply line.
IMPORTANT: Flexible supply line/coupling must be used.
Solenoid valve failure due to hard plumbing connections will
void warranty.
The dryer is to be connected to the water mains using a
new hose set and the old hose set should not be reused.
Optional Manual Bypass
Provisions are made in the dryer’s fire suppression system
for the installation of an optional manual bypass. The
connections for the manual bypass are made at the “tee” or
“three way” fitting located in the outlet supply side of the water
solenoid valve. The manual ball cock shutoff valve must be
located outside of the dryer at a distance from the dryer where
it is easily accessible. The use and connection of this manual
bypass is at the option or discretion of the owner.
The water connection for the manual bypass is made to the
“tee” or “three way” fitting, which has a 3/8” F.N.P.T. and a
coupling must be used to provide the minimum 1/2-inch (12.7
mm) supply (feed) line.
Electrical Requirements
No independent external power source or supply connection
is necessary. The 24-volt power to operate the fire suppression
system is accomplished internally in the dryer (from the dryer
controls).
!
WARNING
Electrical power must be provided to the dryer at all
times. If the main electrical power supply to the dryer
is disconnected, the fire suppression system is
inoperative!!
AD-80i/M-80p
Install an inverted bucket steam trap and check valve at
least 12-inches (30.48 cm) below each steam coil return
connection as close to the coil(s) as possible. Two traps
with a minimum capacity of 140 lb (63.50 kg) of condensate
per hour at 150 psi (1 MPa) is needed for each unit. (Based
on 2 times the steam consumption per hour.) Refer to
figure 1 on
page 28.
AD-50i/M-50p
Install an inverted bucket steam trap and check valve at
least 12-inches (30.48 cm) below the steam coil as close
to the coil as possible. A trap with a minimum capacity of
210 lb (95.25 kg) of condensate per hour at 150 psi (1
MPa) is needed for each unit. (Based on 2 times the steam
consumption per hour.) Refer to figure 2 on
page 28.
Install a 3/4-inch vacuum breaker at the steam coil (as shown)
to prevent coil damage from acids formed in a vacuum.
Mount steam solenoid valve in orientation show, with coil up.
The supply line and the return line(s) should be insulated.
This will save energy and provide for the safety of the operator
and maintenance personnel.
Water pockets in the supply line, caused by low points, will
provide wet steam to the coil possibly causing steam coil
damage. All horizontal runs of steam supply piping should be
pitched 1/4-inch (6.35 mm) for every 1 foot (0.31 meters) back
towards the steam supply header causing the condensate in
the line to drain to the header. Install a bypass trap in any low
point to eliminate wet steam.
IMPORTANT: Flexible hoses/couplings must be used. Coil
failure due to hard plumbing connections will void the
warranty.
Steam Solenoid Valve Connections
(AD-80i/M-80p and AD-50i/M-50p Only)
In standard format, this dryer is shipped with a 24VAC steam
solenoid valve for installation in the steam supply piping.
(Refer to steam piping diagram.) This valve is stored in the
dryer’s lint compartment during shipment. Wiring and quick
connections for this valve are provided in the rear of the dryer
(top right).
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 ensure 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
required 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.
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