TFP1090
Page 10 of 26
Installation
NOTICE
Alteration of the trim may prevent the
Model DPV-1 Valve from functioning
properly, as well as void approvals and
the manufacturer’s warranties.
Failure to latch open the Clapper
Assembly prior to a system hydro-
static test may result in damage to the
Clapper Assembly.
The Model DPV-1 Valve must be
installed in a readily visible and acces-
sible location.
The DPV-1 Valve and associated trim
must be maintained at a minimum tem-
perature of 4°C.
Heat tracing of the Model DPV-1 Valve
or its associated trim is not permit-
ted. Heat tracing can result in the for-
mation of hardened mineral deposits
that are capable of preventing proper
operation.
Install TYCO Model DPV-1 Dry Pipe
Valves in accordance with the follow-
ing criteria:
•
The Model DPV-1 Dry Pipe Valve
must be installed with factory
assembled trim.
•
Suitable provision must be made
for disposal of drain water. Drainage
water must be directed such that it
will not cause accidental damage to
property or danger to persons.
•
Installation of an Air Maintenance
Device, as described in the Technical
Data Section, is recommended.
•
It is best practice to install an
appropriately rated and listed relief
valve upstream of the Model DPV-1
Dry Pipe Valve, between the inlet
of the DPV-1 Valve and any check
valves or back ow preventers, to
ensure transient increases in water
pressure do not cause unintended
operation of the DPV-1 Valve.
•
An Inspector’s Test Connection must
be provided on the system piping at
the most remote location from the
Model DPV-1 Dry Pipe Valve.
•
Conduit and electrical connections
are to be made in accordance with
the requirements of the authority
having jurisdiction.
•
Before a system hydrostatic test
is performed in accordance with
the standards recognized by the
Approval agency, in addition to any
other authorities having jurisdic-
tion, the Clapper Assembly is to be
manually latched open (see Figure
3D); the Automatic Drain Valve (see
Water Supply
Pressure, bar
System Air
Pressure
Range, bar
1,4 0,7
4,1 1,0 - 1,6
5,5 1,4 - 1,9
6,9 1,7 - 2,3
8,3 2,1 - 2,6
10,0 2,4 - 3,0
11,4 2,8 - 3,3
12,8 3,1 - 3,7
14,1 3,4 - 4,0
15,5 3,8 - 4,3
16,0 4,1 - 4,6
Pressure
(bar)
Minimum
(sec.)
Maximum
(sec.)
1,4 24 160
1,7 18 116
2,1 15 92
2,8 10 60
3,5 8 48
4,1 6 36
TABLE C
ACCELERATOR
DIFFERENTIAL CHAMBER
FILL TIMES TO 0,7 BAR
TABLE B
SYSTEM AIR PRESSURE
REQUIREMENTS
Figures 7 to 18) is to be temporarily
plugged; and, the Handhole Cover
Bolts are to be tightened using a
cross-draw sequence.
Valve Setting
Procedure
Perform this procedure when initially
setting the Model DPV-1 Dry Pipe
Valve; after an operational test of the
fire protection system; or, after system
operation due to a fire.
See Figures 7 to 18 as applicable
for the given riser arrangement and
proceed as follows:
Step 1. Close the Main Control Valve,
and close the Air Supply Control Valve.
If the Model DPV-1 Dry Pipe Valve is
equipped with a Dry Pipe Valve Accel-
erator, close the Accelerator Control
Valve.
Step 2. Open the Main Drain Valve
and all auxiliary drains in the system.
Close the auxiliary drain valves after
water ceases to discharge. Leave the
Main Drain Valve open.
Step 3. As applicable, place the
Three-Way Alarm Control Valve in the
open position.
Step 4. Verify that the Automatic Drain
Valve has stopped draining to deter-
mine the Model DPV-1 Valve is com-
pletely drained.
Step 5. As necessary, replace all
sprinklers that have operated. Replace-
ment sprinklers must be of the same
type and temperature rating as those
which have operated.
NOTICE
In order to prevent the possibility of
a subsequent operation of an over-
heated solder type sprinkler, any solder
type sprinklers which were possibly
exposed to a temperature greater than
their maximum rated ambient must be
replaced.
Step 6. Push down on the Reset Knob
as shown in Figure 3E to allow the
Clapper Assembly to reseat.
Step 7. Pressurize the system with
air (or nitrogen) to 0,7 bar, and then
individually open all auxiliary drain
valves in the system piping to drain
any remaining water in trapped sec-
tions. Close each drain valve as soon
as water ceases to discharge. Also par-
tially open the Low Body Drain Valve in
the valve trim to assure that the riser
is completely drained. Close the Low
Body Drain Valve as soon as water
ceases to discharge.
Step 8. See Table B and then restore
the system to the normal system air
pressure as necessary to hold the
Model DPV-1 Valve closed.
Step 9. Verify that there is not any air
discharging from the Automatic Drain
Valve.
The absence of air discharging from
the Automatic Drain Valve is an indica-
tion of a properly set air seat within the
Model DPV-1 Valve. If air is discharging,
see the Care and Maintenance section
under Automatic Drain Valve Inspection
to determine/correct the cause of the
leakage problem.
Step 10. If the Model DPV-1 is
equipped with a Dry Pipe Valve Accel-
erator, reset the Dry Pipe Valve Accel-
erator in accordance with Steps 10A
through 10H. Otherwise, proceed to
Step 11.
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