Bell & Gossett DN0412C User Manual

INSTRUCTION MANUAL

DN0412

REVISION C

Hoffman Specialty

®

Vented Boiler Feed Units
Series HCM,™ HSM

HCM Boiler Feed Units

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

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.

CAUTION

DO NOT RUN PUMP DRY,
SEAL DAMAGE MAY OCCUR.

INSPECT PUMP SEAL
REGULARLY FOR LEAKS,
REPLACE AS REQUIRED.

FOR LUBRICATION
REQUIREMENTS, CONSULT
SERVICE INSTRUCTIONS.

FAILURE TO FOLLOW
INSTRUCTIONS COULD
RESULT IN INJURY OR
PROPERTY DAMAGE.

P70644 ALL UNITS

P70644

EXPLOSIBLE

(2) All Units

DN0483 (Small) - DN0484 (Large)

WARNING

DO NOT PRESSURIZE TANK.
ISOLATE TANK DURING LEAK TEST.
DO NOT RESTRICT VENT.
DO NOT PLUG OVERFLOW.
OPEN INLET VALVES SLOWLY.
DO NOT USE AS A FLASH TANK.

FAILURE TO FOLLOW
INSTRUCTIONS COULD RESULT
IN SERIOUS INJURY OR DEATH.

If the decals as noted below are missing or are illegible con­tact your local B&G representative for a replacement.

1. Electrical connections to be made by 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
boiler feed units.

WARNING

EXPLOSIBLE

ISOLATE TANK

DURING LEAK TEST

(2) All Units
DN0485 (Small)
DN0486 (Large)

TM

SERIES

MODEL

SERIAL

GPM PSI PUMP

CFM IN HG. PUMP

DWGS

POWER V. PH. HZ60

CONTROL V. PH. 1 HZ60

TOTAL LARGEST MOTOR
F.L. AMP F.L. AMP

DN0016

TM

Morton Grove, Illinois 60053

SERIES

MODEL

SERIAL

GPM PSI PUMP

POWER V. PH. HZ60

CONTROL V. PH. 1 HZ60

TOTAL LARGEST MOTOR
F.L. AMP F.L. AMP

DN0019

UNITS LESS PANEL

TM

TM

Morton Grove, Illinois 60053

DN0019

DN0016

UNITS WITH PANEL

3

PUTTING THE UNIT INTO SERVICE

1. Assure that the unit is piped in accordance with instructions on

page 2.

2. Isolate tank before performing any system leak test. Do not pres­surize the tank as part of the leak test. Failure to do this can result
in serious injury or death.

3. Check floats and alternators for free operation.

4. Check power leads in accordance with wiring diagram enclosed in
control cabinet (when furnished).

5. Install drain plugs.

6. Fill receiver half full of water to prime pump(s) and prevent pos­sible damage to pump seals. Avoid freezing conditions after unit
receiver has been filled.

7. Check for proper rotation of all three phase motors. Rotation must
be clockwise looking down on the motor as indicated by direc­tional arrow on pump casting. If pump runs backwards, inter­change two wires (3 phase only).

8. Throttle plug cock in discharge line until pressure at pump (while
pump is discharging) approaches pump rated pressure. Tighten
plug nut to secure adjustment.

9. Connect the water make-up assembly to city water. Use piping at
least as large as the valve piping provided. Provide a manual fill
valve if not included on the unit.

10. Boiler Level Controls — Assure that the controls on and related to
the boiler match the control systems provided on the unit (see the
wiring diagram furnished) (applicable when electrical control panel
is furnished).

11. Check that the pump discharge pressure exceeds the maximum
operating pressure of the boiler.

12. Manually move the make-up water float indicator and assure that
the make-up solenoid admits water.

13. Manually move the low water cut-off float switch indicator to
check for pump shut-off.

14. Remove start-up label (below) from panel (if applicable) after com­plying with instructions.

15. If possible, observe operation thru several cycles.

OPERATION AND MAINTENANCE

Operators must be familiar with all sections of this manual to under-

stand the operation of the unit.
Hot water, steam and electricity can be hazardous.

Check motor nameplate for any lubrication requirements. Pumps
require no lubrication.

NOTICE / AUTO RESTART

Single phase motors will restart automatically after thermal overload

protector trips.
Overload thermal relays in starters must be reset manually.
A properly installed unit should function unattended for long periods

of time. Periodic checks to assure proper operation are highly recom­mended. Refer to trouble shooting section when necessary.

A variety of control options are available and are furnished in accor­dance with user specifications. Refer to wiring diagrams (when fur­nished) to determine control switch settings.

The inlet strainer (when furnished) is intended to protect the pump and
system. Periodic cleaning should be included in the maintenance
schedule. Check frequently in new systems.

WARNING / HIGH VOLTAGE: Disconnect and lock out

power before connecting or servicing unit. Failure to follow

these instructions could result in serious injury or death.

WARNING / MAINTAIN BOILER SAFETY FEATURES:

When connecting the boiler feed unit to the boiler, assure

that all boiler safety controls (burner cutoff, etc.) are and remain
operational. With certain control arrangements, dedicated boiler
controllers are required for the boiler feed pumps. Failure to fol­low these instructions could result in serious injury, death or
extensive property damage.

CAUTION: DO NOT RUN DRY.

SEAL DAMAGE MAY OCCUR.

Inspect pump seal regularly for leaks. Replace as required.

Failure to follow these instructions could result in injury or prop­erty damage.

CAUTION / DO NOT REVERSE: Reverse operation can

cause extensive damage to pumps. Jog the motor to test
from direction of rotation. Failure to follow these instructions
could result in injury or property damage.

WARNING / HIGH VOLTAGE: Disconnect and lock

out power before connecting or servicing unit. Failure to
follow these instructions could result in serious injury or death.

WARNING / EXPLOSIBLE: The installed boiler feed

unit becomes an integral part of the boiler system. Boiler
operation and maintenance requires specific skills and training
and may require licensing or certification. The boiler feed unit
must be operated and maintained so as not to jeopardize the
boiler operation. Failure to follow these instructions could result
in serious injury, death or extensive property damage.

SAFETY INSTRUCTIONS

SEE COVER OF THIS MANUAL.

CAUTION / SUBSEQUENT DAMAGE: A unit showing

symptoms of possible problems (overflow, noise, leaks,
vibrations, continual operation, etc.) must be corrected immedi­ately. Failure to follow this instruction may result in full liability for
subsequent injury or property damage.

WARNING: EXPLOSIBLE

Do not pressurize receiver. Isolate receiver during leak test.

Do not plug overflow. Do not restrict vent opening to atmosphere.
Open valves slowly. Failure to follow these instructions could result
in serious injury or death.

WARNING: EXPLOSIBLE

Do not pressurize receiver. Isolate receiver during leak test.

Do not plug overflow. Do not restrict vent opening to atmosphere.
Open valves slowly. Failure to follow these instructions could result
in serious injury or death.

ELECTRICIAN/INSTALLER/OPERATOR

REMOVE AND DESTROY THIS TAG AFTER —

1. ASSURING THAT ALL PUMPS ROTATE CLOCKWISE PER ARROWS CAST ON VOLUTES. (JOG
PUMP MOMENTARILY TO TEST – INTERCHANGE ANY TWO MOTOR POWER WIRES TO
REVERSE 3PH MOTORS.)

2. ASSURING THAT SHIPPING LOCKS HAVE BEEN REMOVED FROM ALL FLOAT SWITCHES.