Bell & Gossett V58583 User Manual

Bell & Gossett

Instruction Manual V58583

AUTOMATIC FLOW LIMITING VALVE Y-STRAINER VALVE

UNION ACCESSORY

Circuit Sentry
Terminal Kits – Model AC2YL

Installation, Operation and Service Instructions

INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.

NOTE: Bell & Gossett does not recommend Circuit
Sentry Terminal Kits to be used for potable water.

SAFETY
INSTRUCTION

This safety alert symbol will be used in this manual to draw
attention to safety related instructions. When used, the safety
alert symbol means ATTENTION! BECOME ALERT! YOUR

SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE IN­STRUCTIONS MAY RESULT IN A SAFETY HAZARD.

OPERATIONAL LIMITS

WORKING PRESSURE & TEMPERATURE LIMITS

(SOLDER TYPE LIMITS FOR ANSI STD. B.16.18)

COIL HOOKUP ACCESSORY TEMP °F (°C) PRESSURE PSI (KPA)

Y-Strainer Valve (NPT) 250 (121) 400 (2758)

Y-Strainer Valve (sweat) Based on solder type ASTM Std. B16.18

Union Ended Ball Valve (NPT) 250(121) 400 (2758)

Union Ended Ball Valve (sweat) Based on solder type ASTM Std. B16.18

Union Accessory (NPT) 250 (121) 400 (2758)

Accessory (sweat) Based on solder type ASTM Std. B16.18

WARNING: This product contains a chemical known
by the State of California to cause cancer and birth

defects or other reproductive harm.

WARNING: It is possible, depending on the age or

condition of the drain valve stem seal, for some liquid
to escape when closing the valve. Do not have eyes or
face directly above valve. Failure to follow these instruc­tions could result in serious personal injury.

MAXIMUM MAXIMUM

TYPE OF 1/2" – 1" 11/4" – 2"
SOLDER

95-5
TIN- 250 (1724) 225 (107) 250 (1724) 200 (93)

ANTIMONY

LIMITATIONS LIMITATIONS

PRESSURE TEMP PRESSURE TEMP

PSI (kPa) °F (°C) PSI (kPa) °F (°C)

300 (2069) 200 (93) 300 (2069) 175 (79)

200 (1379) 250 (121) 175 (1207) 250 (121)

HOW TO USE PRESSURE TAPS
TO MEASURE SYSTEM
OPERATING CONDITIONS

1. Using Bell & Gossett Model RP-250B, readout probes,
attach Bell & Gossett differential pressure readout kit to the
readout valves on the Accessory valve.

2. Read the differential pressure from the coil inlet isolation
valve (typically strainer) to coil outlet isolation valve (typi­cally flow limiting balancing valve). Differential value should
be between the sum of the coil, and control valve pressure
drop and 60 psi depending upon the amount of control
being exercised by the flow limiting valve function for bal­ance. Optional pressure reading valves (B&G P/N V58050)
may be installed in the barrel of the strainer, flow limiting
valve or union connection for the coil for a more discrete
reading if desired. Valves should be installed with coil and
barrels isolated and drained.

GENERAL INFORMATION

For installing Sweat Connections:

a) Clean tube ends and valve connections thoroughly per

good piping practices with a fine grade emery cloth or fine
grit sandpaper.

b) For soldering, use 95-5 (Tin-Antimony) solder and a good

grade of flux.

c) Use a torch with a sharp pointed flame.
d) When sweating the joints, first adjusting the valve in the full

open position, then wrap the valve with a cool wet rag and
then direct the flame with care to avoid subjecting the
valve to excessive heat. Allow the valve to cool before
touching or operating.

e) Check the soldered connection for leaks.

For installing NPT connections:

Apply pipe compound conservatively to male connecting fit­tings only. After installation check all joints for leakage and re­tighten where necessary.

AUTOMATIC FLOW LIMITING VALVE

DESCRIPTION

Low Flow AC valve is designed to automatically control the
flow in piping systems to selected preset limit. As pressure
differential increases, a cartridge inside the valve body
reduces the flow area to accurately maintain the preselected
flow rate.

Flow Operating Range: 0.25 – 3.8 GPM

INSTALLATION INSTRUCTIONS

1. The Automatic Flow Limiting Valve must be installed on the
return side of the coil with union end on the upstream side
and fixed end on the downstream side of the flow.

2. Install the unit so that the flow arrow on the body housing
points in the direction of flow.

3. Prior to coil commissioning and operating the Flow
Limiting Valve, adjust cartridge to the desired flow rate
between 0.25 GPM to 3.8 GPM.

i. Loosen screw (a) position
ii. Rotate plastic pointer (b) to the desired flow rate.

Increments marked on variable orifice are in GPM.

iii. Re-tighten screw (a) with pointer set at the desired flow

rate.

CAUTION: The use of Teflon®* impregnated pipe

compound and Teflon tape on pipe threads provides
lubricity. Care should be taken to prevent overtightening
which may damage the valve body. Failure to follow these
instructions can result in moderate personal injury and/or
property damage.

WARNING: Use of improper procedures to sweat

valve model with union connection into system can
damage valve. Before installing sweat union connection to
valve, remove the union nut and O-ring from the valve
body, then union tailpiece with union nut must be sweated
(soldered) into place. Failure to follow this instruction could
result in property damage and/or moderate personal injury.

CAUTION: Excessive use of solder or flux may result

in damage to the shutoff valve seat and ball. Do not
use excessive solder or flux. Failure to follow these
instructions can result in moderate personal injury and/or
property damage.

CAUTION: Heat associated with the use of silver

solder may damage valve components and void the
product warranty. Do not use silver solder. Failure to fol­low these instructions could result in property damage
and/or moderate personal injury.

*Teflon is a registered trademark of E.I. DuPont de Nemours and Company.

WARNING: Damage to the Low Flow AC valve or

failure of solder sealing joints may occur if these oper­ational limits are exceeded. This can result in water leak­age. Failure to follow this instruction can cause serious
personal injury and/or property damage.

WARNING: Hot water leakage can occur from read-

out valves during probe insertion and during hookup
of readout kit. Follow the instruction manuals supplied with
readout probes and readout kits for safe use. Failure to
follow these instructions could result in serious personal
injury or death and property damage.

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