Installation - Johnson Controls tyco DV-5A Manual

45
30
15
0
20 60 100
WATER SUPPLY PRESSURE IN PSI

Installation

The TYCO DV-5 Single Interlock Pre-
a
action Dry Pilot Actuation Valve is to
be installed in accordance with this
section.
NOTICE
DV-5A Automatic Water Control Valves
are designed to be used in freshwater
systems. When the supply is from an
alternative source such as brackish
water, saltwater, or contains additives
such as foam, the limited warranty is
reduced to one year from the time of
installation. An increase in frequency of
inspections is required when the valve
is exposed to such supplies and other
corrosive conditions or chemicals that
could impact valve materials or the
operation of the assembly. The system
and all components must be designed
accordingly for the increased demand.
It is required to thoroughly flush the
valve and trim assembly with freshwa-
ter and reset to the set condition after
each operation.
Proper operation of the DV-5
Interlock Preaction Dry Pilot Actua-
tion Valve depends upon their trim
being installed in accordance with the
instructions given in this technical data
sheet. Failure to follow the appropriate
trim diagram may prevent the DV-5
Valve from functioning properly, as well
as void approvals and the manufactur-
er's warranties.
The DV-5 Valve must be installed in a
a
readily visible and accessible location.
The DV-5 Valve, associated trim, and
a
wet pilot lines must be maintained at
a minimum temperature of 40°F (4°C).
140 180 200
DV-5 VALVE SINGLE INTERLOCK PREACTION SYSTEM
a
DRY PILOT LINE AIR PRESSURE REQUIREMENTS
Heat tracing of the DV-5
associated trim is not permitted. Heat
tracing can result in the formation of
hardened mineral deposits that are
capable of preventing proper operation.
Always open the system control valves
slowly to avoid a sudden rush of water
entering the system.
The DV-5 Valve is to be installed in
a
accordance with the following criteria:
Step 1. All nipples, fittings, and devices
must be clean and free of scale and
burrs before installation. Use pipe
thread sealant sparingly on male pipe
threads only.
Step 2. The DV-5
action Dry Pilot Actuation Valve must
be trimmed in accordance with the trim
illustrations shown in Figure 5.
Note: If the addition of an Alarm Control
Valve is desired or required by the local
AHJ, the Alarm Control Valve noted as
Item H in Figure 8 is to be a separately
ordered electronically supervised normally
open valve.
Step 3. Care must be taken to ensure
Single
a
that check valves, strainers, globe
valves, etc. are installed with the flow
arrows in the proper direction.
Step 4. Drain tubing to the Drip Funnel
must be installed with smooth bends
that will not restrict flow.
a
Step 5. The Main Drain and Drip Funnel
Drain may be interconnected provided
a check valve is located at least 12 in.
(300 mm) below the Drip Funnel.
Step 6. Suitable provision must be
made for disposal of drain water. Drain-
age water must be directed such that
it will not cause accidental damage to
property or danger to persons.
NOTES:
The dew point of the pilot line air pressure must be maintained
below the lowest ambient temperature to which the dry pilot
actuation system will be exposed. Accumulation of water in the
pilot line connection to the Actuator will lower the air pressure
at which the actuator will open and possibly prevent proper
operation. Also, introduction of moisture into the pilot lines
exposed to freezing temperatures can create an ice buildup
that could prevent proper operation of the Actuator.
An air dryer must be installed where the moisture content
of the air supply is not properly controlled at less than the
required value.
It is recommended that an AMD-3 Nitrogen Maintenance
Device be utilized in dry pilot actuation system applica-
250
tions where the dew point must be maintained below -20°F
(-29°C). Refer to Technical Data Sheet TFP1241.
GRAPH B
Valve or its
a
Single Interlock Pre-
a
Page 7 of 18
Step 7. Connect the Diaphragm Supply
Valve to the inlet side of the System
Main Control Valve in order to facilitate
setting of the DV-5 Valve (See Figure
a
8).
Step 8. An Inspector's Test Connec-
tion, as described in the Dry Pilot Actu-
ation section, must be provided for Dry
Pilot Actuation systems.
Step 9. An Air Maintenance Device,
as described in the Dry Pilot Actuation
section, must be provided for Dry Pilot
Actuation.
Step 10. A desiccant dryer, when
specified for Dry Pilot Actuation, is to
be installed between a drip leg and the
Air Maintenance Device.
Step 11. The Low Pressure Alarm
Switch for Dry Pilot Actuation is to be
adjusted as follows:
• Low pressure alarm setting at
approximately 6 psi (0,4 bar) below
the minimum pilot line service pres-
sure requirement shown in Graph B
• Fire alarm setting at approximately
15 psi (1,0 bar) below the minimum
pilot line service pressure require-
ment shown in Graph B
Step 12. Unused Pressure Alarm
Switch connections must be plugged.
Step 13. The Dry Pilot Pressure Relief
Valve (Item Y - Figure 8) provided with
the Dry Pilot Actuation Trim is factory
set to relieve at a pressure of approxi-
mately 45 psi (3,1 bar), which can typi-
cally be used for a maximum dry pilot
actuation system pressure of 40 psi
(2,8 bar). The Pressure Relief Valve may
be reset; however, it must be reset to
relieve at a pressure which is in accor-
dance with the requirements of the
authority having jurisdiction.
TFP1416