Hoffman Series VBF & HBF
8Pages

INSTRUCTION MANUAL DN0162 REVISION F Hoffman Specialty® Vented Boiler Feed Units Series HBF and VBF Series HBF Model 50VBF-D Duplex, 50 gallon receiver Series VBF, Model 50VBF-S Simplex, 50 gallon receiver 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. 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. (2) All Units DN0483 (Small) - DN0484 (Large) HOFFMAN SPECIALTY SERIES EXPLOSIBLE ISOLATE TANK DURING LEAK TEST (2) All Units DN0485 (Small) DN0486 (Large) 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 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. If pump, motor or piping are operating at extremely high or low temperatures, guarding or insulation is required. 3. Operating personnel should be trained in the operation of pumps and associated systems (condensate, boiler feed units). Morton Grove, Illinois 60053 DN0116 Units with Panel

INSTALLATION AND DESCRIPTION (TYPICAL PIPING DIAGRAM) SERIES HBF Boiler Feed Receiver Basket Strainer Vent To Atmosphere Condensate Return From System Full Size Air Vent To Atmosphere Vent Loop Fill Overflow (See Detail) Inlet Strainer To Drain Gauge Glass Mechanical Make-Up Valve Return From System Make-Up Water Supply (See Note 1) Pump Discharge Overflow Loop Boiler Feed Pump Water Make-Up OVERFLOW LOOP DETAIL Vent Receiver NOTE: 1. Inlet water pressure should not exceed 30 psi (2.0 bar). For water systems in excess of 30 psi (2.0 bar), use a Bell & Gossett #6 Pressure Reducing Valve, set...

PUTTING THE UNIT INTO SERVICE 1. Assure that the unit is piped in accordance with instructions on page 2. 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. 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 power leads in accordance with wiring diagram (by others). 8. Boiler...

TROUBLE SHOOTING PROCEDURES All units are thoroughly tested at the factory before shipment. They should operate satisfactorily without further adjustment if properly installed and provided they have not been damaged by rough handling in transit. If system or unit performance is not satisfactory, refer to the following check list. Boiler Feed Pump is Noisy Pump Will Not Start 2. Excessive condensate temperature. Correct system conditions. 1. The power supply has been interrupted, disconnect switch is open or selector switch is improperly positioned. 3. Magnetic hum or bearing noise in motor....

MAKE-UP WATER VALVE Description Float Valve Assembly Float Float Valve Only (Less float and adapter) Adapter INSTRUCTIONS Adjustment — The make-up water valve is factory set to maintain receiver water level at approximately 1/2 full. When systems require a large percentage of make up water, the float setting should be raised to utilize full receiver capacity. When large percentages of returns from the system are available the float setting may be lowered to not less than 4" (101 mm) above the top of the pump suction opening. Make-up Water Valve IDL001 STAMP “B” WATER DISCHARGE NOTE: INSTALL...

PUMP SERVICE INSTRUCTIONS FOR WATCHMAN CENTRIFUGAL PUMPS These close coupled vertical centrifugal pumps are equipped with mechanical seals. If system has not been properly cleaned prior to installation of pump, foreign matter such as dirt, pipe scale, core sand, etc. may clog the impeller and damage the seal. A strainer is recommended in return line to pump. Pump must not be operated dry. Seals may be damaged if operated without water present. 1. Close inlet line gate valve and operate pump momentarily to remove as much liquid as possible from pump. Close discharge line gate valve. CAUTION...

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. 17. Close drain and slowly open inlet valves. See warning. 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. 18. Jog to check motor rotation. See caution. CAUTION / DO NOT REVERSE: Reverse operation can cause...

Consult Factory 13. Replace impeller on shaft. Replace stainless steel washer and secure impeller with capscrew or cap nut. Complete Pump and Motor Assembly Description Motor — Order by Description Impeller Pump Head Case with Wear Ring Wearing Ring Impeller Capscrew Impeller Washer Capscrews Water Slinger Seal Kit Including Mech Seal, Head Gasket Order Replacement Parts by Description and Part No. Specify Serial No. shown on nameplate. (4) The carbon ring of the rotating seal part should not be loose in the seal head. If it is, apply a small amount of grease to the rubber bellows...