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GT® FLOW CENTER

INSTALLATION INSTRUCTIONS

NOTE: Read the entire instruction manual before starting the installation.

WARRANTY

This flow center is warranted for five years from date of sale, excluding the 3-230KFC-SS, which is only a two year

warranty. Alleged defective product must be returned to B&D Mfg., Inc., 901 9th Street, Scranton, Iowa 51462, for

inspection via prepaid freight. Defective parts will be repaired or replaced at the manufacturer’s discretion. No allowance

for labor or property damage is implied. Warranty of performance is limited to the table provided with the unit and only

when being used in a closed-loop, heat pump system. No warranty of performance is provided when pump(s) are

provided by others.

INTRODUCTION

These instructions cover the installation of the GT

Flow Center Part No. 0(1)-NPFC-SS, 0(2)-NPFC-SS, 1-230PFC-SS, 2-

230PFC-SS and 3-230KFC-SS. The GT

Flow Center is a prepackaged pumping station to be used with closed-loop,

ground source heat pumps. The package contains a water vessel, an air-eliminating dip tube, a pump protecting check

valve, pump(s) and ball valves that allow the pump(s) to be removed for service without loss of fluid to the system.

SAFETY CONSIDERATIONS

Installing and servicing of air conditioning and heating equipment can be hazardous due to system pressures and

electrical components. Only trained, qualified personnel should install, start-up and service this equipment.

Untrained personnel can perform basic maintenance functions such as cleaning coils or cleaning and replacing filters. All

other operations should be performed by trained service personnel.

When working on the equipment, observe precautions in the literature, tags, stickers and labels attached to the

equipment and to any other safety precautions that apply.

Follow all safety codes. Wear safety glasses and work gloves.

B&D Mfg, Inc

901 9th Street

Scranton, IA 51462

Phone (712) 652-3424

Fax (712) 652-3388

www.bdmfginc.com

Patent No. 5,244,037

Fig. 1.

26-99 Pump Center Flow Chart

Fig. 2.

26-116 Pump Center Flow Chart

Fig. 3.

NRF36 Pump Center Flow Chart

Summary of content (4 pages)

PAGE 1
GT FLOW CENTER ® INSTALLATION INSTRUCTIONS Fig. 1. 26-99 Pump Center Flow Chart Fig. 2. 26-116 Pump Center Flow Chart Fig. 3. NRF36 Pump Center Flow Chart NOTE: Read the entire instruction manual before starting the installation. WARRANTY This flow center is warranted for five years from date of sale, excluding the 3-230KFC-SS, which is only a two year warranty. Alleged defective product must be returned to B&D Mfg., Inc., 901 9th Street, Scranton, Iowa 51462, for inspection via prepaid freight.
PAGE 2
INSTALLATION Before installing the GT® Flow Center, check the flow charts and loop table against system flow and pressure drop characteristics to be sure the correct flow center is selected for the system. A one-pump flow center can accommodate flow for 3 1/2-ton units and smaller. A two-pump flow center can accommodate flow for 3 1/2- through 6-ton units. (See Fig. 1, 2 & 3) To ensure adequate flow, the selection must be made based on your specific system design.
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2. Open the ball valves on both sides of the pumps. 3. Remove the screw on the end of the Grundfos pump motor and rotate the motor shaft with a small screwdriver. This vents air out of the pumping chamber and lubricates the motor bearings. When water appears at the screw opening, replace the screw. 4. Close all loop header valves except one pair (See Fig. 4).
PAGE 4
MODEL 0(1)-NPFC-SS or MODEL 0(2)-NPFC-SS Weight: 25 lb. MODEL 1-230PFC-SS Weight: 34 lb. A MODEL 2-230PFC-SS Weight: 43 lb. A A B B H c c c D Electrical: 1/60/230V Insulation: 3/8” A = 1" UNION (FPT) B = 1" FPT Approx. Volume of Fluid: 4.5 gal. C = 1" FLANGE BALL VALVE LETTER AFTER MODEL NUMBER FOR PUMP NEEDED: G=2699-3 Speed(230V) H = 34" M=26-116 D = 15 1/2" B=NRF36 CAUTION: For proper operation, water must be added as air is eliminated.