Bell & Gossett DN0130D User Manual
Domestic® Pump
250˚F Condensate Units
INSTRUCTION MANUAL
DN0130
REVISION D
Series SA™ and SA-P
™
SERIES SA-P
SERIES SA
™
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
WARNING
SAFETY
INSTRUCTIONS
This safety alert symbol will be used in this manual and on
the unit safety instruction decals 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.
If the decals are missing or are illegible contact your local B&G
representative for a replacement.
1. Electrical connections to be made by a qualified Electrician
in accordance with all National, State and Local codes.
2. Motor must have properly sized starter with properly sized
heaters to provide overload and undervoltage protection.
3. If pump, motor or piping are operating at extremely high or
low temperatures, guarding or insulation is required.
4. Operating personnel should be trained in the operation of
condensate return units.
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EXPLOSIBLE
DO NOT EXCEED PRESSURE
RATING OF THE UNIT.
DO NOT ALTER OR DEFEAT
PRESSURE RELIEF V
OPEN VALVES SLOWLY.
MAXIMUM PRESSURE 15 PSI.
FAILURE TO FOLLOW
INSTR
UCTIONS COULD
RESUL
T IN INJURY OR
PROPER
TY DAMAGE.
DN0124 ALL UNITS
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SERIES
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MODEL
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SERIAL
GPM PSI PUMP
CFM IN HG. PUMP
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DWGS
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POWER V. PH. HZ60
CONTROL V. PH. 1 HZ60
TOTAL LARGEST MOTOR
F.L. AMP F.L. AMP
Morton Grove, Illinois 60053
DN0016
DN0016 UNITS PANEL
™
DOMESTIC® PUMPS
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SERIES
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MODEL
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SERIAL
GPM PSI PUMP
POWER V. PH. HZ60
CONTROL V. PH. 1 HZ60
TOTAL LARGEST MOTOR
F.L. AMP F.L. AMP
Morton Grove, Illinois 60053
ALVE.
DN0124
DN0019 UNITS LESS PANEL
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TM
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TM
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CAUTION
DO NOT RUN PUMP DRY,
SEAL DAMAGE MAY OCCUR.
INSPECT PUMP SEAL
REGULARL
REPLACE AS REQUIRED
FOR LUBRICATION
REQUIREMENTS,
SERVICE INSTR
FAILURE TO FOLLOW
INSTR
UCTIONS COULD
RESUL
T IN INJURY OR
PROPER
TY DAMAGE.
P70644 ALL UNITS
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TM
Y FOR LEAKS,
CONSULT
UCTIONS.
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P70644
MECHANICAL DRAIN
VALVE (OPTIONAL)
FLOAT SWITCH
FOR STAND BY
THERMOSTATIC
VENT TRAP
TO DRAIN
PUMP
DISCHARGE
DOMESTIC SERIES B35
CENTRIFUGAL PUMP
(SERIES DB PUMP
OPT., SEE DETAIL AA)
GAUGE
GLASS
DIAL
TEMP.
GAUGE
ANODE
COMPOUND GAUGE
PROPORTIONING
REGULATOR
PRESSURE RELIEF VALVE,
PIPE TO DRAIN (PITCH DOWN)
STEAM
ABSORPTION UNIT
OR
CONVERTER
OR
FAN COIL UNIT
OR
STEAM PROCESS
EQUIPMENT
COMPOUND
GAUGE
GAUGE
GLASS
DIAL
TEMP.
GAUGE
DOMESTIC SERIES B35
CENTRIFUGAL PUMP
(SERIES DB PUMP
OPT., SEE DETAIL AA)
PUMP
DISCHARGE
TO DRAIN
ANODE
THERMOSTATIC
VENT TRAP
PRESSURE RELIEF VALVE
PIPE TO DRAIN (PITCH DOWN)
MECHANICAL DRAIN
VALVE (OPTIONAL)
FLOAT SWITCH
PUMP DISCHARGE
FLEXIBLE
PUMP
CONNECTOR
PUMP
SUCTION
LEGEND:
“Y” STRAINER
GATE VALVE
UNION
PLUG COCK
CHECK VALVE
NON SLAM
CHECK VALVE
FLANGE
PROPORTIONING
CONTROL VALVE
DETAIL AA
DETAIL OF RECOMMENDED PIPING TO
SERIES DB HIGH PRESSURE PUMP
1DPD22
1DPD32
High Temperature Condensate Units
Series SA and SA-P
REPRESENTATIVE PIPING DIAGRAMS
SERIES SA-P
DESCRIPTION OF EQUIPMENT
The Series SA, and SA-P units consists of an ASME Code
stamped steel receiver (permitting operating under pressure up
to 15 psig [1.0 Bar] and equivalent temperature up to 250°F
[121°C]). Series B35 centrifugal pump(s) designed for 2 ft. (0.6M)
NPSH, corrosion inhibitor (anode), water level gauge, thermometer, pressure relief valve, thermostatic air vent trap, compound gauge, valve(s) in pump suction, and a drain (gate)
valve. Occasionally, Series SA units are fully vented; these
receivers feature ASME Code construction except the code
stamped is omitted. In addition to the above components, the
Series SA-P employs a proportioning regulator and valve (electric or pneumatic). The Series SA unit uses float switch controls.
Control panels and components supplied per specification.
When Series SA units are furnished with ASME Code stamped
receivers, relief valve and air vent trap to permit pressurization,
then the receiver inlet is directly connected to the outlet of the
steam absorption unit or other steam process equipment with-
2
SERIES SA
out steam traps in the return line. When used in this manner, a
separate SA unit is usually required for each independently
controlled heating unit.
It is, however, possible to use a single SA unit with multiple
heating units. Detailed information and drawings will be furnished on request.
The relief valve on the unit is set at 15 psi (1.0 Bar) and rated at
1900 pph (862 Kg/hr) steam. Any additional system protection
must be provided as required by others.
PRELIMINARY INSPECTION
Assure that there is no shipping damage.
Assure that nameplate ratings agree with job specifications and
actual conditions.
HANDLING
Use care in installing unit.
CAUTION: UNIT LIFTING EYE
Use unit lifting eyes only to lift unit as shipped from
factory. Unit must be empty and disconnected from pipes,
anchors and other restraints. Use proper rigging pr
ocedures. Failure to follow these instructions could result in
injury or property damage.
LOCATION
Place unit for easy access to all parts. Allow adequate space
for servicing. Check ambient conditions.
NOTICE / TEMPERATURE LIMITS
Motors are designed to operate in 104°F (40°C) max. ambient.
Insulate or ventilate as required.
WARNING: EXPLOSIBLE
Do not exceed pressure rating of unit (normally 15 psi
[1.0 Bar]). Do not alter or defeat relief valve (must be 15 psi
[1.0 Bar] max.). Pipe relief valve discharge to a safe location.
Failure to follow these instructions could result in serious
injury or death.
PIPING (General)
Pipe the unit per the Elementary Piping Diagram. Locate and
support piping so as to not load the pump discharge.
RETURNS
Gravity return lines from system should be properly pitched to
drain to unit by gravity. A “Y” strainer and gate valve should be
installed in the return line.
PIPING (Relief Valve)
The discharge from the relief valve should be piped to a location for safe for potential full flow steam. There must also be
provision for drainage of the liquid discharged.
WARNING: RELIEF VALVE REQUIRED
For sale operation the system requires a relief valve
set at 15 psi (1.0 Bar) or less. The relief valve discharge must
be piped to a location where 15 psi (1.0 Bar) steam can be
safely discharged. Do not restrict, reduce or valve the relief
valve discharge line. Failure to follow these instructions
could result in serious injury or death.
WARNING: LIMITED PRESSURE RELIEF
VALVE CAPACITY
The pressure relief valve supplied on the unit may not be
sufficient to relieve rated capacity of the unit or full output of
the boiler. Relief valve supplied is rated at 1900 pph (862
Kg/hr) steam. The tank is rated to withstand 125 psi (8.5 Bar),
but the operating pressure must not exceed 15 psi (1.0 Bar).
Professional system design or evaluation, by others, must
evaluate the upstream system and provide for necessary
additional protection. Discharge thru the pressure relief
valve is a symptom of a system failure. The unit must be
valved off immediately. Failure to follow these instructions
could result in serious injury, death or extensive property
damage.
THERMOSTATIC VENT TRAP OR ATMOSPHERIC VENT
Connect piping from drain line, thermostatic vent trap, and
mechanical drain valve (if so equipped) to drain. Occasionally,
Series SA units are furnished fully vented, without thermostatic
vent trap. Oversize vent openings are then supplied; install full
size vent pipe to atmosphere.
CAUTION: NOT A CHEMICAL PUMP
Inject boiler feed compounds from chemical feed tank
into boiler feed piping – never into condensate tank. Failure
to follow these instructions could result in injury or property
damage.
FLOAT SWITCHES & MECHANICAL ALTERNATORS
Float switch and/or displacer switches, standard or proportional,
are provided to meet system r
Floats are locked in place to prevent damage during ship
equirements.
ment.
Remove shipping locks. Check factory settings. Floats and
mechanical alternators are adjustable for various levels of operation. The lead pump should start with tank 3/4 full and shut of
at 2" (51mm) or more above pump inlet. Lag pump should start
before the tank overflows. Settings should avoid “short
cycling” of the pump.
Displacer positions are adjusted by removing the contr
oller
from the top of the tank and changing cable lengths.
PROPORTIONING ELECTRIC REGULATOR
AND PROPORTIONING (SLIDE WIRE) ELECTRIC VALVE
The regulator is actuated by a float-operated mechanism. Its
function is to regulate the action of the proportioning type of
motor operated valve, so the amount of flow through the valve
is in balance with the water level change.
By accurately following the changes in the water level, the float
actuates a potentiometer slide wire located in the proportioning
regulator. Connected to a similar potentiometer in a relay and
valve operator, the regulator causes the valve to open, close, or
hold in a fixed position.
PNEUMATIC PROPORTIONING
REGULATOR AND CONTROL VALVE
The pneumatic proportional control utilizes controlled air pressure to modulate the discharge valve opening. An air pressure
switch set a 2-3 psi (0.1-0.2 Bar) starts and stops the pump(s)
while the discharge valve is essentially closed.
DISCHARGE CONNECTION – SERIES SA AND SA-P UNITS
A check valve, gate valve and square head steam plug cock
should be located close to pump in discharge line. The plug
cock(s) may be omitted on Series SA-P units equipped with
proportioning discharge valves. If discharge line is more than
100 ft. (30M) long, it should usually be one size larger than the
pump tapping. When the pump is to discharge to a vented
receiver at approximately the same elevation, the steam pressure in the receiver may be greater than the static head at the
pump discharge causing condensate and steam to be forced
through the pump. This condition can be corrected by installing
a back-pressure valve with a spring pressure approximately
equal to the maximum receiver pressure.
ELECTRICAL WIRING & CONTROLS
Connect power wiring per NEC. Recheck nameplate vs. specifications and conditions. All single phase motors have internal
thermal protection.
WARNING: HIGH VOLTAGE ELECTRICITY
Disconnect and lock out power before connecting or
servicing unit. Failure to follow these instructions could
result in serious injury or death.
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