Bell & Gossett DN0132F User Manual

Domestic® Pump
Vented Boiler Feed Units
Series CM,™ CSM,™ CBEM,™
CBM,™ CMED,™ and

CMHD

INSTRUCTION MANUAL

DN-0132

REVISION F

TM

CMED Boiler Feed Unit

CBEM Boiler Feed Unit

CBM Boiler Feed Unit

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.

WARNING

EXPLOSIBLE

ISOLATE TANK

DURING LEAK TEST

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

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.

TM

SERIES

MODEL

SERIAL

GPM PSI PUMP

CFM IN HG. PUMP

DWGS

POWER V. PH. HZ 60

CONTROL V. PH. 1 HZ 60

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

DN0016

TM

Morton Grove, Illinois 60053

DN0116

Units with Panel

SERIES

MODEL

SERIAL

GPM PSI PUMP

POWER V. PH. HZ60

CONTROL V. PH. 1 HZ60

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

TM

TM

Morton Grove, Illinois 60053

DN0019

Units Less/Panel

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

OPERATION AND MAINTENANCE

Operators must be familiar with all sections of this manual to

understand 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 operations
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.

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 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.

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: HIGH VOLTAGE

Disconnect and lock out power before connecting or

servicing unit. Failure to follow these instructions could
result in serious injury or death.

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 for direction of rotation. Failure
to follow these instructions could result in 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: HIGH VOLTAGE

Disconnect and lock out power before connecting or

servicing unit. Failure to follow these instructions could
result in serious injury or death.

CAUTION: SUBSEQUENT DAMAGE

A unit showing symptoms of possible problems

(overflow, noise, leaks, vibrations, continual operation, etc.)
must be corrected immediately. Failure to follow these
instructions may result in full liability for subsequent injury or
property damage.

SAFETY INSTRUCTIONS

SEE COVER OF THIS MANUAL

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.

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.

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.

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