Tyco AquaMist ULF AM27 User Manual

Ultra Low Flow AQUAMIST Nozzles
Type ULF AM27
Automatic (Closed)

Worldwide

Contacts

www.tyco-fire.com

General
Description

The TYCO Ultra Low Flow AQUAMIST
Nozzles Type ULF AM27 are closed
(automatic) nozzles intended for use
with engineered, water-mist systems.
They are low-pressure nozzles that
utilize a single fluid jet impinging on a
diffuser to produce a spray having a
range of water droplet sizes suitable
for the control of Class A fires.

It is recommended that the end user be
consulted with respect to the suitabil­ity of the materials of construction and
finish for any given corrosive environ­ment. The effects of ambient tempera­ture, concentration of chemicals, and
gas/chemical velocity should be con­sidered, at a minimum, along with the
corrosive nature to which the nozzles
may be exposed.

NOTICE

The Type ULF AM27 AQUAMIST
Nozzles de scribed herein must be
installed and maintained in compliance
with this document and with the appli­cable standards of the NATIONAL FIRE
PROTECTION ASSOCIATION (NFPA),
in addition to the standards of any
authorities having jurisdiction. Failure
to do so may impair the performance
of these devices.

The design of individual water mist
systems can vary considerably,
depending on the characteristics and
nature of the hazard and the basic

IMPORTANT

Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.

Always refer to Technical Data
Sheet TFP700 for the “INSTALLER
WARNING” that provides cautions
with respect to handling and instal­lation of sprinkler systems and com­ponents. Improper handling and
installation can permanently damage
a sprinkler system or its compo­nents and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.

purpose of the water mist system.
Because of these variations, the design
of water mist systems for fire protec­tion must only be performed by expe­rienced designers who thoroughly
understand the limitations as well as
capabilities of such systems.

The owner is responsible for main­taining their fire protection system
and devices in proper operating con­dition. Contact the installing contrac­tor or product manufacturer with any
questions.

Approvals

The TYCO Type ULF AM27 AQUA­MIST Nozzles in a 57°C (135°F) tem­perature rating and in a natural brass
finish are Factory Mutual Approved
when used as part of an engineered,
wet pipe water mist system. In particu­lar, the FM Approval testing was per­formed in accordance with FM Class
5560, Approval Standard for Water Mist
Systems.

Technical
Data

Discharge Coefficient

K = 11,7 LPM/bar½
(K = 0.81 GPM/psi½)

Thread Connection

1/2 inch NPT

Finish

Natural Brass
Chrome Plated
White Coated

Temperature Ratings

Refer to Table A

Physical Characteristics

Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass

Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . Copper

Orifice Insert . . . . . . . . . . . . . . . . . . . . . . .Bronze

Button . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze

Sealing Assembly ..Beryllium Nickel w/TEFLON

Ejection Spring . . . . . . . . . . . . . . Stainless Steel

Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Glass

Diffuser/Loading Screw . . . . . . . Stainless Steel

The smallest waterway (orifice) diam­eter of the Orifice Insert is nominally 4,3
mm (0.169 inches). The diameter of the
Inlet Strainer perforations is nominally
3,2 mm (0.125 inches).

Design
Criteria

Obtain guidance for the design of a
water-mist system that utilizes the
TYCO Type ULF AM27 AQUAMIST
Nozzles from the Technical Services
department.

Page 1 of 4 AUGUST 2018 TFP2227

TFP2227

Assembly

Components:

SHAPE

ESCUTCHEON

20,6 mm

61,9 mm
(2-7/16")

11,1 mm

1/2"

AM27

73,0 mm

CLOSURE

WRENCH RECESS

WRENCH

WRENCHING AREA

Page 2 of 4

(13/16")

PLATE SEATING

SURFACE

17,5 mm

(11/16")

25,4 mm

(1")

TYPE ULF AM27 AQUAMIST NOZZLE

11,1±3,2 mm

(7/16±1/8")

FACE OF

NOZZLE

FITTING

(7/16")

NPT

NOMINAL

MAKE-IN

WRENCH

FLATS

8

31,0 mm

(1.22")

FIGURE 1

NOMINAL DIMENSIONS

(2-7/8") DIA.

57,2 mm

(2-1/4") DIA.

1

2

3

4

5

6

7

DIFFUSER

12,7 mm (1/2")

6,4 mm (1/4")

MOUNTING

PLATE

3,2 mm

(1/8")

1
2

3
4
5

6
7

8

-

Strainer

-

Orice
Insert

-

Frame

-

Button

-

Sealing

-

Bulb

-

Diffuser/
Loading
Screw

-

Ejection
Spring

Temperature

Rating

57° C/13 5°F Orange

68°C/155° F Red

79 °C/175° F Yel low

93°C/200°F Green

Bulb Fluid

Color

TABL E A

TE M PE R ATU R E R ATIN GS

SELECTION

(USE ONLY

END "A")

FIGURE 3

W-TYPE 6 WRENCH

RECESS

MOUNTING

SURFACE

TYPE ULF AM27 AQUAMIST NOZZLE

WITH STYLE 20 RECESSED ESCUTCHEON

Installation

The TYCO Type ULF AM27 AQUAMIST
Nozzles must be installed in accor­dance with this section.

NOTICE

Do not install any bulb-type nozzle if
the bulb is cracked or there is a loss
of liquid from the bulb. With the nozzle
held horizontally, a small air bubble
should be present. The diameter of
the air bubble is approximately 1,6 mm
(1/16 inch) for the 57°C (135°F) to 2,4
mm (3/32 inch) for the 93°C (200°F)
temperature ratings.

Obtain a leak-tight 1/2 inch NPT nozzle
joint by applying a minimum-to-max­imum torque of 9,5 to 19,0 Nm (7 to
14 ft.-lbs.). Higher levels of torque
can distort the nozzle inlet and cause
leakage or impairment of the nozzle.

FIGURE 2

Do not attempt to compensate for
insufficient adjustment in the escutch­eon plate by under or over-tightening
the nozzle. Re-adjust the position of the
nozzle fitting to suit.

Type ULF AM27

The Type ULF AM27 AQUAMIST
Nozzles must be installed in accor­dance with the following instructions.

Step 1. Install the Type ULF AM27
in the pendent position as shown in
Figure 1.

Step 2. With pipe-thread sealant
applied to the pipe threads, hand­tighten the nozzle into the nozzle fitting.

Step 3. Tighten the nozzle into the
nozzle fitting using only the W-Type 6
Wrench (Ref. Figure 3). With reference
to Figure 1, apply the W-Type 6 Wrench
to the Wrench Flats.

17,4 mm (11/16")

11,1 mm (7/16")

PUSH WRENCH

IN TO ENSURE
ENGAGEMENT

WITH SPRINKLER

FIGURE 4
W-TYPE 7

RECESSED WRENCH

Type ULF AM27 Recessed

The Type ULF AM27 AQUAMIST
Recessed Nozzles must be installed
in accordance with the following
instructions.

Step 1. Install the Recessed Type ULF
AM27 in the pendent position as shown
in Figure 2.

Step 2. After installing the Style 20
Mounting Plate, as applicable, over
the nozzle threads and with pipe-thread
sealant applied to the pipe threads,
hand-tighten the nozzle into the nozzle
fitting.

Step 3. Tighten the nozzle into the
nozzle fitting using only the W-Type 7
Recessed Wrench (Ref. Figure 4). With
reference to Figure 1, apply the W-Type
7 Recessed Wrench to the nozzle
Wrench Flats.

Step 4. After the ceiling has been
in stalled or the finish coat has been