Reliable DDX-LP PrePak Maintenance manual

Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model DDX-LP PrePaK™System
2” (50mm), 21 /
2” (65mm),
3” (80mm), 4” (100mm),
6” (150mm) & 8” (200mm)
Bulletin 748 January 2022
Bulletin 748 January 2022
Instructions for
Installation, Operation,
Care and Maintenance
Low Pressure Dry-Pipe System
8 psi - 24 psi (0.6 bar - 1.7 bar)
System Air/Nitrogen Pressure
General Description
The Reliable Model DDX-LP PrePaK system (Sizes 2”
(50mm), 2½” (65 mm), 3” (80 mm), 4” (100 mm), 6” (150mm)
and 8” (200mm)) is a completely self-contained, supervised dry
pipe system that can be readily installed within a floor space
of less than 7 square feet (0.65 square meters). Refer to Fig.
1 for cabinet dimensions. Installation of the DDX-LP PrePaK
system requires just three piping connections: the water sup-
ply, the sprinkler system and the drain. Reference locations of
these piping connections are shown in Fig. 1. One electrical
supply connection is required. Note: The Model DDX-LP Pre-
PaK system is available with an optional 115V VAC (60Hz) air
compressor.
Full assembly drawings for the units are available on the Reli-
able Automatic Sprinkler Company website (www.reliablesprin-
kler.com).
The heart of the Reliable Model DDX-LP PrePaK system is
the Model DDX-LP Dry Pipe Valve. The Reliable Model DDX-LP
Dry Pipe Valve is a hydraulically operated, mechanical dry pipe
valve designed for use as a primary control valve in a low pres-
sure dry pipe valve system. The trim set used with the Model
DDX-LP Dry Pipe Valve contains the Reliable Model LP Dry Pilot
Actuator releasing device. This Actuator allows the system air
or nitrogen pressure to be considerably less than the water sup-
ply pressure (see Table A). The following benets are a direct
result of lower air pressure:
1. In refrigerated area systems, lower air pressure decreas-
es the possibility of ice plugs that could impede or pre-
vent the flow of water to re sprinkler heads in the event
of re.
2. Lower air pressure allows for smaller capacity, lower cost
dehydration equipment, where required.
3. Lower air or nitrogen pressure can reduce water delivery
time when the system actuates, and in some cases, may
eliminate the need for an accelerator.
4. For systems supplied with nitrogen, low supervisory
pressure reduces the quantity of nitrogen required to
maintain the system pressure.
Note: Photograph is for illustrative purposes only.

2.
When using the Reliable DDX-LP PrePaK system the sprinkler
system is pressurized with air provided by the optional factory-
installed air compressor or on-site Nitrogen supply and is moni-
tored by a system pressure switch. If bottled Nitrogen is being
used as the supervisory gas, an optional Nitrogen Kit is avail-
able. This kit contains a regulator and an additional pressure
switch that is used to monitor any low pressure conditions that
may arise due to having a limited Nitrogen supply. When using
Nitrogen, the primary supervisory gas should be the Nitrogen
(not standard air) due to moisture concerns (i.e. freezing condi-
tions). The optional factory-installed air compressor should be
utilized merely for initial ll and make-up air when the Nitrogen
supply is not active. Note: Compressed air is not to be consid-
ered dry air and may create ice plugs in the sprinkler system
piping.
When a re sprinkler operates, there will be a loss of air or Ni-
trogen pressure in the sprinkler system piping which will cause
the Model LP-Dry Pilot Actuator to open. The opening of this
device allows the Model DDX-LP PrePaK system valve to flow
water into the system piping.
A Model B Hydraulic Manual Emergency Releasing station
is standard equipment in the Reliable DDX-LP PrePaK system.
It consists of an aluminum nameplate mechanically attached
to a ball valve. The valve handle in its OFF position is guarded
against accidental turning to the ON position (and system dis-
charge) by a nylon cable tie provided with the DDX-LP PrePaK
system assembly. The cable tie is designed to allow, in case of
an emergency, forceful turning of the valve handle to the ON
position.
Listings and Approvals
1. Underwriters Laboratories, Inc. Listed and Certied for
Canada (cULus) as an assembled unit in the “Special
System Water Control Valves Assembled Units” cat-
egory, (VKYL).
2. Factory Mutual Approved as a Dry Pipe Sprinkler Sys-
tem.
3. OSHPD Special Seismic Certication Preapproval
(OSP) for SDS=2.50 and z/H=1, when installed with
optional seismic kit.
Technical Data
1. The Reliable Model DDX-LP PrePaK system is rated for
a minimum water supply pressure of 20 psi (1.4 bar).
When tted with the optional 300 psi (20.7 bar) solenoid,
the 2”, 2-1/2”, 3”, and 8” sizes are rated for a maximum
pressure of 250 psi (17.2 bar), and the 4” and 6” sizes
are rated for a maximum pressure of 300 psi (20.7 bar).
Water temperature must be maintained between 40°F
and 140°F (4°C and 60°C).
2. Friction loss, expressed in equivalent length of Schedule
40 pipe and based on Hazen-Williams Formula is:
System Size Equivalent Length
2” (50 mm) 19.4 ft (1.3 m)
2½” (65 mm) 24.5 ft (1.8 m)
3” (80 mm) 28.9 ft (3.8 m)
4” (100 mm) 32.8 ft (17.7 m)
6” (150 mm) 54.7 ft (21.8 m)
8” (200 mm) 79.3 ft (24.2 m)
The equivalent length in the table above includes the Model
DDX-LP PrePaK system valve, supply manifold tee, supply
side control valve, and the section of pipe above the Model
DDX-LP PrePaK system valve.
3. Shipping Weight:
System Size Weight
2” (50 mm), 2½” (65 mm)
& 3” (80 mm)
554 lb. (252 kg)
4” (100 mm) 710 lbs (322 kg)
6” (150 mm) 800 lbs (363 kg)
8" (200mm) 1350 lbs (531kg)
4. Refer to Figure 1 for dimensions.
The following is a list of Technical Data Bulletins which de-
scribe the valves and devices which are used in the system:
Device Reliable Bulletin #
(unless otherwise noted)
Model DDX-LP PrePaK system
Deluge Valve Reliable Bulletin 519
Model DDX-LP Dry Pipe Valve Reliable Bulletin 338
Low Air Pressure Switch Potter, 5401564
Alarm Pressure switch Potter, 5400928
Nitrogen Pressure Switch Potter, 5400930
Mechanical Sprinkler Alarm Reliable Bulletins 612/613
Desiccant Dryer Wilkerson Catalog 9EM-TK-190-4
Installation Requirements
The automatic sprinklers utilized with the DDX-LP PrePaK
system must be UL and/or ULC Listed or FM Approved, as
applicable.
The steel enclosure and all the interconnecting piping must
be located indoors in a readily visible and accessible location
and in an area that can be maintained at a minimum tempera-
ture of 40°F (4°C). Note: Heat tracing is not permitted. The
Model DDX-LP PrePaK system operation is controlled by the
Model LP Dry Pilot Actuator. The introduction of moisture into
the system piping exposed to freezing temperatures can create
ice blockage, which could prevent proper system operation.
As a minimum, the air supply should be taken from the area
of lowest temperature within the protected area. The air sup-
ply system must be carefully designed to prevent plugging by
frost deposits. Special requirements, such as those in FME&R
“Installation Guidelines for Refrigerated Storage” may need to
be incorporated.
Optional Seismic Kit
Reliable part number 6501200041 (25” x 28” cabinet for 2”
-4” systems without nitrogen generator) and 6501200042 (30”
x 33” cabinet for 6” and 8” systems, and all units with nitrogen
generator) are seismic upgrade kits required to make the Reli-
able PrePaK OSHPD compliant. One kit is required for each
PrePaK (reference Caution Sheet 331).

3.
Fig. 1

4.
Hydrostatic Testing of DDX-LP PrePaK System Valves
and DDX-LP PrePaK Systems
As required by NFPA 13, re sprinkler systems with working
pressures up to and including 150 psi are to be hydrostatically
tested at a water pressure of 200 psi. Fire sprinkler systems
with working pressures above 150 psi are required to be hydro-
statically tested at 50 psi above the system working pressure.
In addition to the hydrostatic tests described above, dry pipe
systems require an additional low pressure air test.
In some cases, hydrostatic testing (in accordance with the
NFPA 13 requirements noted above) will result in pressures that
exceed the working pressure of the valve and trim kit for the
two-hour test period.
The valve and applicable trim kit have been tested, approved
and listed under these conditions and as such, hydrostatic test-
ing in accordance with NFPA 13 is acceptable. In addition, the
clapper can remain in the closed position and the trim kit need
not be isolated, as each has been designed to withstand hydro-
static testing as required by NFPA 13.
Subjecting the valve and trim to pressures higher than their
rating is limited to the hydrostatic test as referenced by NFPA13.
It does not address the occurrence of a “water hammer” effect,
which may damage the valve. A “water hammer” in the water
supply piping of the valve can create pressures in excess of the
rated pressure and should be avoided by all necessary means.
This condition may be created from improper re pump set-
tings, underground construction work, or an improper venting
of trapped air in the water supply piping.
System Supervisory Pressure Requirements
The DDX-LP PrePaK system includes gauges indicating the
air/nitrogen and water pressures on the Model DDX-LP sys-
tem. Table A species the air or nitrogen pressure to be main-
tained in the sprinkler system piping based on the water supply
pressure. The factory installed Pressure Maintenance Device
in the unit automatically regulates makeup air or nitrogen flow
to maintain pressure with normal leakage from system piping,
while restricting the flow of makeup air or nitrogen to the sys-
tem. Please note that when the optional Model B1 Accelerator
is to be utilized to expedite water-delivery time, the air or nitro-
gen pressure must be not less than 15 psi (1.0 bar).
Table A
Note: During system setup, a higher pneumatic pressure may
be required in order to properly set the Model LP Dry Pilot Ac-
tuator.
The dew point of the air supply must be maintained below the
lowest ambient temperature to which the dry system will be ex-
posed. Introduction of moisture into the system piping exposed
to freezing temperatures can create ice blockage which could
prevent proper system operation. As a minimum, the air sup-
ply should be taken from the area of lowest temperature within
the protected area. The air supply system must be carefully
designed to prevent plugging by frost deposits. Special require-
ments, such as those in FME&R’s “Installation Guidelines for
Refrigerated Storage” may need to be incorporated.
Nitrogen used in refrigerated area systems minimizes the pos-
sibility of ice build-up and blockage inside the system piping that
could inhibit proper system operation. The dewpoint of nitrogen
compressed to 20 psig (1.4 bar) pressure is -46°F (-43.3°C),
and -52°F (-46.7°C) when compressed to 10 psig (0.7 bar).
High-pressure nitrogen cylinders can typically be rented from
a local source, with rental fees varying by supplier and cylinder
sizes. The calculated nitrogen supply in lbs (kg) to pressurize
various system capacities to 10 psi (0.7 bar) at different freezer
temperatures is shown in Table B.
If the Reliable DDX-LP PrePaK system is to be used with Nitro-
gen, a Nitrogen kit is available as an option. A pressure switch
is used to monitor the nitrogen supply; the electrical contacts on
the pressure switch close when the nitrogen supply falls to 100
psi (6,9 bar). The nitrogen source should be replaced promptly
upon operation of the pressure switch. If the nitrogen supply is
not replaced, make-up air will come solely from the unit’s air
compressor (if installed). Compressed air is not considered dry
air, and may create ice plugs in the sprinkler system piping.
Table B
System
Capacity
Gal. (L)
Freezer Temperature Approx.
Fill Time
(min.)*
20°F
(-6.7°C)
0°F
(-18°C)
-20°F
(-29°C)
-40°F
(-40°C)
-60°F
(-51°C)
250
(946)
1.90
(.86)
1.90
(.86)
2.00
(.90)
2.10
(.95)
2.20
(1.00) 1
500
(1891)
3.64
(1.65)
3.80
(1.72)
4.00
(1.81)
4.20
(1.91)
4.40
(2.00) 2
750
(2840)
5.50
(2.50)
5.70
(2.60)
6.00
(2.72)
6.30
(2.86)
6.60
(3.00) 3
1,000
(3785)
7.30
(3.30)
7.60
(3.44)
8.00
(3.62)
8.33
(3.78)
8.80
(4.00) 4
Note: To obtain required nitrogen supply (lbs.) for 15 psi (1.0 bar)
or 22 psi (1.5 bar), multiply the tabulated values by a factor
of 1.5 or 2.2 respectively.
(1 bar = 100 kPa)
Water Pressure psi (bar) System Air or Nitrogen Pressure
psi (bar)
Maximum Not Less Than
20 (1.4) 8 (0.6)
30 (2.1) 10 (0.7)
50 (3.4) 12 (.8)
75 (5.2) 13 (.9)
100 (6.9) 15 (1.)
125 (8.6) 16 (1.1)
150 (10.3) 17 (1.2)
175 (12.1) 18 (1.2)
200 (13.8) 19 (1.3)
225 (15.5) 21 (1.4)
250 (17.2) 22 (1.5)
275 (19.0) 23 (1.6)
300 (20.7) 24 (1.7)
Notes:
1. Supervisory air or nitrogen pressure should not exceed 30 psi (2.1 bar).
Excess pressure may result in damage to the actuator.
2. Fastest valve operation is achieved with supervisory air or nitrogen
pressure indicated; however, pressure must never be less than the
minimum specied in the table above.
3. Air maintenance devices that maintain a constant pressure are
recommended; however, if a tank-less compressor is used, the
“compressor on” setting of the pressure switch must never be lower than
the minimum pressure in the table above.

5.
* When lled with the Rapid Air – Fill Shutoff Valve open.
If the air compressor in the Model DDX-LP PrePaK system is
to be used to initially ll the sprinkler system with air, the steel
enclosure door should remain open in order to provide maxi-
mum intake air flow to the air compressor. The air compressor
is connected to a storage tank. This tank functions as a reser-
voir, providing make-up air to compensate for small, intermittent
leaks in the sprinkler system. It should be noted that signicant
leaks may overburden this storage tank, thereby causing the air
compressor to continuously cycle on and off.
The factory-installed system low air pressure switch may need
on-site adjustment to correspond with the air pressure values
found in Table A. Adjustment, if required, should be made ac-
cording to Potter Bulletin 5401564 included with the switch.
System Electrical Requirements
All 24 VDC electrical connections in the Reliable Model DDX-
LP PrePaK system are translated to a water tight terminal box
mounted on the inside of the enclosure. All eld wiring connec-
tions are made at this terminal box.
A separate power connection is provided for the optional air
compressor.
Note: The air compressor must be connected to a grounded
metallic, permanent wiring system, or an equipment grounding
terminal or lead on the product. Power supply wiring must con-
form to all required safety codes and be installed by a qualied
person. Check that the supply voltage agrees with that listed on
compressor nameplate.
The Reliable Model DDX-LP PrePaK system is available with
the following factory installed electrical devices:
1. A system low air pressure switch, which is used to moni-
tor sprinkler piping.
2. An alarm pressure switch, which indicates actuation of
the system.
3. An optional low nitrogen pressure switch, which indicates
a depleted nitrogen supply.
4. An optional air compressor.
5. A supervised supply side butterfly water control valve.
6. A optional supervised system side butterfly water control
valve.
The factory electrical connections of these devices are illus-
trated in Fig. 3.
Maintenance
The Reliable DDX-LP PrePaK system and associated equip-
ment shall periodically be given a thorough inspection and test.
NFPA 25, Standard for Inspection, Testing and Maintenance of
Water Based Fire Protection Systems, provides minimum main-
tenance requirements. Systems should be tested, operated,
cleaned and inspected at least annually, and parts replaced as
required. Periodically open the condensate drain valve beneath
the air tank to drain any condensate accumulation. Reliable
Technical Bulletins 338 and 519 provide additional informa-
tion for maintaining the Model DDX-LP PrePaK system Deluge
Valve.
System Setup (Refer to Figure 2)
1. Close the main valve controlling water supply to the Model
DDX-LP PrePaK system deluge valve. Also, close the two
¼” valves supplying air or nitrogen to the system.
2. Close the pushrod chamber supply valve.
3. Open the main drain valve and drain the system.
4. Open all drain valves and vents at low points throughout
the system, closing them when flow of water has stopped.
5. Open the Manual Emergency Release valve. Note: The
above steps accomplish the relieving of pressure in the
pushrod chamber of the deluge valve.
6. Push in the plunger of ball drip valve to force the ball from
its seat, and drain any water in the alarm line.
7. Push in and rotate the deluge valve’s external reset knob
counter-clockwise (when facing valve) until you hear a dis-
tinct clicking noise, indicating that the clapper has reset.
Note: The reset knob can be rotated only after pressure
in the pushrod chamber is reduced to atmospheric condi-
tions (0 psig).
8. Inspect and replace any portion of the sprinkler system
subjected to re conditions.
9. Verify that the following valves are in their respective posi-
tions prior to continuing:
Manual Emergency Release - open
Main Drain Valve - open
Alarm Line Valve - open
Alarm Test Valve - closed
Condensate Drain valve - closed
Air/Nitrogen Supply Valves - closed
10. Open pushrod chamber supply valve and allow water to
ll the pushrod chamber. Close the Manual Emergency
Release valve after any trapped air has had a chance to
escape from the deluge valve’s pushrod chamber.
11. Upon seeing this solid flow of water coming out of the
Model LP Dry Pilot Actuator, open the Rapid-Air Fill Valve
thereby rapidly applying compressed air or nitrogen into
the Model LP Dry Pilot Actuator and the sprinkler system
until the pressure conforms to Table A levels, as indicat-
ed by the system air pressure gauge. The Model LP Dry
Pilot Actuator will eventually close during this pressuriz-
ing process and water will stop flowing through the drain
tube. At this point, the pressure gauge on the pushrod
chamber pressure will equalize to the available water
supply pressure. Once the actuator is set up correctly,
close the Rapid-Air Fill Valve and open the Regulated Air
Shutoff Valve.
Note: For systems using nitrogen as the primary source,
the system may be set up using the nitrogen source fol-
lowing the steps above. The air compressor, if present,
may then be placed into operation as the backup pneu-
matic source.
12. Open the alarm line valve.
13. If the Model B1 Accelerator Kit is installed, open valve P.
Prior to opening valve P, be sure that the Model B1 Ac-
celerator has been successfully reset per Reliable Tech-
nical Bulletin 323.
Note: The B1 Accelerator requires a minimum of 15 psi
(1,0 bar) supervisory air or nitrogen pressure for proper
operation.

6.
14. Slightly open the main valve controlling water supply to
the Model DDX-LP PrePaK system Deluge Valve. This
will begin to ll the deluge valve beneath the clapper with
water. Once any trapped air has been vented, close the
main drain valve. Observe if water leaks through the ball
drip valve into the 1” drain manifold through the clear
tubing. If no leakage occurs, the deluge valve clapper
is sealed. Fully open the main valve controlling the wa-
ter supply to the Model DDX-LP PrePaK system Deluge
Valve and that it is properly monitored
15. Verify that the pushrod chamber supply valve is open.
16. Secure the handle of the Model B Manual Emergency
Station in the OFF position with a nylon tie (supplied with
the assembly).
Inspection And Testing Of The DDX-LP PrePaK
Systems (Refer to Figure 2)
1. Water supply — Verify that the valve controlling water
supply to the deluge valve is opened fully and properly
monitored.
2. Pushrod Chamber supply — Verify that the valve sup-
plying water to the pushrod chamber is open.
3. Other trimming valves — Verify that the alarm line valve
is open as well as all of the pressure gauge valves. The
main drain valve, alarm test valve, and condensate drain
valve should be closed.
4. Ball drip valve — Push in on the plunger to be sure the
ball check is off its seat. If no water appears, the deluge
valve’s water seat is tight. Inspect the small bleed hole lo-
cated on the underside of the Model DDX-LP PrePaK sys-
tem Deluge Valve pushrod chamber for leakage.
5. System air pressure — Verify that system air pressure
is in conformance with the values posted in Table A for the
supply water pressure.
6. Releasing device — Check the outlet of the (Model LP
Dry Pilot Actuator and Model B Manual Emergency Sta-
tion) for leakage. Also verify that tubing drain lines from
releasing devices are not pinched or crushed which could
prevent proper releasing of the deluge valve.
7. Testing alarms — Open the alarm test valve permitting
water from the supply to flow to the alarm pressure switch
and to the mechanical sprinkler alarm (if present). After
testing, close this valve completely. Push in on the plunger
of ball drip until all of the water has drained from the alarm
line.
8. Operational test — Open the Model B Manual Emergen-
cy Station or, alternatively, reduce air/nitrogen pressure on
the system. Note: An operational test will cause the Del-
uge Valve to open and flow water into the sprinkler system.
9. Secure the Model B Manual Emergency Station in the
OFF position with a nylon tie (included with the assembly)
after the deluge valve is reset.
Testing the Model DDX-LP PrePaK system
Deluge Valve Without Flowing Water (Refer
to Figure 2)
1. Close the valve controlling water supply to deluge valve
and open the main drain.
2. Verify that the pushrod chamber supply valve is open, al-
lowing water to enter the pushrod chamber.
3. Close the air/nitrogen supply to the sprinkler system.
4. Decrease pneumatic pressure in the system by opening
the condensate drain valve, until the Model LP Dry Pilot
Actuator operates. Doing so will result in a sudden drop of
water pressure in the deluge valve pushrod chamber.
5. Reset the system per the directions listed in “System Set-
up” section of this bulletin.
Draining Excess/Condensate Water From System
1. Close the main valve controlling water supply to the Model
DDX-LP system.
2. Close the pushrod chamber supply valve, and open the main
drain valve.
3. Slightly open the condensate drain valve until all water has
drained, then close.
Note: Leaving the condensate drain open for an extended pe-
riod of time may allow excess air/nitrogen to bleed off and result
in accidental release of the Model LP Dry Pilot Actuator and/or
the Model DDX-LP valve.
4. Close the main drain valve. Allow the system air/nitrogen
pressure to return to its previous level. Open the pushrod cham-
ber supply valve rst, and then open the main valve controlling
water supply to the system.

Fig. 2
7.
Model DDX-LP Low Pressure Dry Pipe System
Valve Legend
(Note: Some items omitted for clarity)

8.
AIR COMPRESSOR
COMPPFG03
TERMINAL BOX
24 VDC
AIR COMPRESSOR
PRESSURE SWITCH
CONTROL VALVE
WIRED INTO SUPV. ZONE
WATER
ELECTRICAL DEVICES
FACTORY INSTALLED
(SOME COMPONENTS OMMITTED FOR CLARITY)
CONTACT SET #1
(ZONE #4)
2 1 COM
2
1
COM
POTTER PS25-2
CONTACT SET #2
(EMPTY)
WITH COVER REMOVED.
PRESSURE SWITCH SHOWN
24B 25B22B 23B
SYSTEM PRESSURE SWITCH
WIRED INTO ZONE #4
24 VDC
FROM BOX TERMINAL
CONTACT SET #1
(ZONE #4)
21COM
2
1
COM
POTTER PS10-2
CONTACT SET #2
(EMPTY)
WITH COVER REMOVED.
PRESSURE SWITCH SHOWN
20B 21B
18B 19B
24 VDCFROM BOX TERMINAL
WIRED INTO ZONE #3
ALARM PRESSURE SWITCH
ON/OFF SWITCH
AIR COMPRESSOR
CAPPED
ENDS
VIOLET
BLACK
BLUE
SUPERVISORY VALVE 1
8B
9B
RED
VIOLET
BLACK
BLUE
SUPERVISORY VALVE 2
7B RED
6B WHITE WHITE
YELLOW YELLOW
VIOLET
BLACK
GREEN
WHITE
WHITE
RED
RED
FROM
8B
7B
9B
24 VDC
BOX
TERM.
6B
G5
BLUE
YELLOW
CAPPED
ENDS
OPTIONAL DUAL CONTROL VALVE
STANDARD SINGLE CONTROL VALVE
CAPPED
ENDS
SOLENOID VALVE
WIRED TO TERMINALS
#32 & 33
PREACTION SYSTEMS
ONLY
2B
3B
44B
45B
46B
47B
32B
33B
RED
BLACK
YELLOW
GRAY
ORANGE
YELLOW
GRAY
RED
E.O.L.D.
ASSY
BLACK
FROM 24VDC
ELECTRICAL
SUB-ASSEMBLY
BLACK
SOLENOID
VALVE
ELECTRIC
ENCLOSURE
RELEASING CIRCUIT
DISABLE SWITCH
ORANGE
SOLENOID AND RCDS-1
NOTE: For convenience and where
allowed by the approving authority, Type
SO power cords are connected to the
releasing panel and air compressor when
such devices are present in the unit. When
required, these power cords may be
disconnected and replaced with wiring
that is acceptable to the approving
authority. Replacement of the factory
installed power cords with other approved
wiring does not void listing, approval,
and/or warranty.
DISABLE SWITCH
(SEE ABOVE)
Fig. 3

9.
Fig. 4

P/N 9999970425
PREPAK SIZE(1) SYSTEM TYPE SOLENOID
RELEASE
CONTROL
PANEL
AIR
COMPRESSOR(2)(3) OPTIONS(4) FUTURE
655 Select
Below 3 0 0 Select Below
Select
Below 0
2 = 2" 0 = None 0 = None
0 = 2-1/2" 1 = 1/2 HP 115VAC 60HZ QRM2-50115T
(2", 2-1/2", & 3 Systems)
1 = Nitrogen Cylinder
Supply Kit
3 = 3" 2 = 1 HP 115VAC 60HZ QRM2-100115T
(4" Systems)
2 = Nitrogen Cylinder
Supply Kit & B-1
Accelerator
4 = 4" 3 = 1-1/2 HP 115VAC 60HZ GAP
OL915150AC (6" & 8" Systems) 3 = NS-ASAM
6 = 6" 4 = 1/2 HP 220VAC 60HZ QRM2-50220T
(2", 2-1/2", & 3 Systems)
4 = NS-ASAM & B-1
Accelerator
8 = 8" 5 = 1 HP 220VAC 60HZ QRM2-100220T
(4" Systems) 5 = B-1 Accelerator
A = 2" w/SYS Side
Control Valve
6 = 1-1/2 HP 220VAC 60HZ GAP
OL915150AC (6" & 8" Systems) 6 = Desiccant Kit
B = 2-1/2"" w/ SYS Side
Control Valve
7 = 1/2 HP 220VAC 50HZ QRM2-50220T-
50HZ (2", 2-1/2", & 3 Systems)
7 = Desiccant Kit &
B-1 Accelerator
C = 3" w/SYS Side
Control Valve
8 = 1 HP 220VAC 50HZ QRM2-100220T-
50HZ (4" Systems)
D = 4" w/SYS Side
Control Valve
9 = 1-1/2 HP 220VAC 50HZ GAP
OL2870150AC-50 (6" & 8" Systems)
E = 6" w/SYS Side
Control Valve
F = 8" w/SYS Side
Control Valve
Reliable PrePaKTM Part Number Congurator (Type DDX-LP)
Notes:
1. Manifold size may differ from system size. Customer to conrm size of supply pipe
to PrePaKTM and provide appropriate transition ttings/couplings if necessary
(see Figure 1 of this document).
2. Air compressor size depends on system capacity and normal system pressure.
3. If “0 = None” option is selected, customer to provide separate, appropriately sized
compressed air or nitrogen source.
4. Use “0 = None” for systems utilizing a separate nitrogen generator. Connect to inlet
side of Model A Pressure Maintenance Device. Note that nitrogen generator must
incorporate a tank.
Optional Seismic Kit (order separately): Reliable part number 6501200041 (25”
x 28” cabinet for 2” -4” systems) and 6501200042 (30” x 33” cabinet for 6” and 8”
systems) are seismic upgrade kits required to make the Reliable PrePaK OSHPD
compliant. One kit is required for each PrePaK (reference Caution Sheet 331).
10.