48297 2 Taco Hec Instructions 102 075 User Manual

User Manual: Pump 48297 2 Taco Hec-2 Instructions

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Instruction Sheet 102-435

SUPERSEDES: November 1, 2011 EFFECTIVE: April 1, 2012

Plant ID No. 001-4049

HEC-2 – Variable Speed, ECM High-Efficiency Circulator

DESCRIPTION:

The HEC-2 BumbleBee is a multi-function, variable speed wet rotor circulator with an

ECM, permanent magnet motor. Its high efficiency motor reduces power consump-

tion by up to 85% compared to equivalent AC permanent split capacitor circulators.

APPLICATION:

• Maximum operating pressure: 125 psi (862 kPa)

• Maximum water temperature: 230°F (110ºC)

• Electrical specifications:

Voltage: 115/230, 50/60 Hz, single phase

Operating power range: 9W - 42W

Amp rating: 0.67/0.39

• HEC-2 is provided with a cast iron casing and should be used for closed

loop systems only.

• Taco circulator pumps are for indoor use only – employer uniquement a

l’interieur.

• Acceptable for use with water or maximum of 50% water/glycol solution.

FEATURES:

• Programmable PC board with LED display and 3 operating modes:

CP – Constant Power Mode (Fixed Speed) (allows for 4 fixed circulator speeds, [SP1, SP2, SP3, SP4])

SP – Set Point Mode (Variable Speed, fixed supply temperature, 65°F - 220°F)

dE – “Delta T” Mode (Variable Speed, fixed temperature differential (∆

T)

range from 5°F - 50°F)

• Can be wired to a Taco ZVC Zone Valve Control or SR Switching Relay for ON/OFF operation.

• Sensor kit includes one long and one short sensor with two tie wraps.

• Integral Flow Check (IFC) is included in carton. Simply press into discharge flange if required.

• Swivel-flanged casing provides 360° rotation mounting flexibility.

• LED displays operating mode (CP, SP, dE), power usage (WATTS) and flow (GPM), alternating every 5 seconds.

1. Location:

The circulator can be installed on the supply or return side of the boiler but for best system performance, it should always pump

away from the expansion tank. Sensor location is very important. Refer to Diagrams No.1 and No. 2.

INSTALLATION:

WARNING: Do not use in swimming pool or spa areas. Pump has not been investigated for these applications.

AVERTISSEMENT: Ne pas utiliser dans une piscine ou un spa. La pompe n'a pas été étudiée pour ces applications.

CAUTION: The addition of petroleum based fluids or certain chemical additives to systems using TACO equipment

voids the warranty. Consult factory for fluid compatibility.

ATTENTION: L'ajout de liquides à base de pétrole ou de certains additifs chimiques à des systèmes utilisant un

équipement TACO annule la garantie. Consultez le fabricant pour connaître la compatibilité de liquides.

CAUTION: Installations at elevations over 5000 feet must have higher fill pressure of 20 psi minimum to prevent

pump cavitation and flashing. Premature failure may result. Adjust expansion tank pressure to equal fill pressure. A

larger size expansion tank may be required.

ATTENTION: Des installations à des altitudes de plus de 1600 mètres doivent présenter une pression de remplissage

plus élevée de 20 psi au minimum afin d'éviter toute cavitation ou flashing de la pompe. Une défaillance prématurée

peut en résulter. Réglez la pression du réservoir d'expansion de façon qu'elle soit égale à la pression de remplis-

sage. Un réservoir d'expansion d'une taille supérieure peut être nécessaire.

2

ACCEPTABLE MOUNTING POSITIONS CASING/FLANGE ROTATION

To rotate the casing, remove the two motor

screws and spin the casing 180° to the

reverse flow direction. Reattach the two

screws. (5⁄32"allens wrench required.)

4. Wiring the circulator:

Disconnect AC power supply. Remove terminal box cover. Connect hot wire to

black lead and neutral wire to white lead. Connect ground wire to green ground

screw. Replace terminal box cover.

WARNING: Use supply wires suitable for 90°C,

AVERTISSEMENT: Employer des fils d’alimentation adeqauts pour 90°C.

2. Mounting position:

Circulator must be mounted with the motor in the horizontal position. See diagrams below for acceptable motor mounting orien-

tations. Swivel flanges allow 360° rotation of pump.

3. Fill the system with tap water or a maximum of 50% propylene-glycol and water solution:

The system must be filled before operating the circulator. The bearings are water lubricated and should not be allowed to operate

dry. Filling the system will result in immediate lubrication of the bearings. It is always good practice to flush a new system of for-

eign matter before starting the circulator.

Electrical box must be located below or on right side of motor housing with opening

facing down.

CAUTION: To reduce the possibility of noise transmission, be sure to add vibration dampeners to piping when

mounting circulator to wall or floor joists.

ATTENTION: Pour réduire la possibilité de transmission de bruit, veillez à ajouter des amortisseurs de vibration à la

tuyauterie lors du montage du circulateur sur des chevêtres de mur ou de plancher.

WARNING: Risk of electric shock. This pump is supplied with a grounding conductor and grounding-type attach-

ment plug. To reduce the risk of electric shock, be certain that it is connected only to a properly grounded, ground-

ing-type receptacle. Follow all local electrical and plumbing codes.

AVERTISSEMENT: Risque de choc électrique. Cette pompe est équipée d'un conducteur de mise à la terre et d'une

prise de branchement de type mise à la terre. Pour réduire le risque de choc électrique, veillez à ce qu'elle soit rac-

cordée uniquement à un réceptacle de type mise à la terre proprement mis à la terre. Respectez tous les codes de

plomberie et électriques locaux.

5. Start the circulator:

Note: On start-up, when power is applied to the circulator, the red LED will display “888” for

2 seconds prior to entering the pre-set Operating Mode.

The red LED will display operating mode, “GPM” and “WATTS”,

alternating every 5 seconds.

NOTE: LED displays may vary based on system conditions

and the pumps operating mode.

The HEC-2 is factory preset for “dE” Delta-T Mode at 20°F ΔT. To change operating mode, see “Programming the HEC-2

Circulator”. Operate the circulator for a minimum of 5 minutes immediately after flushing the system to purge remaining air from

the circulator. NOTE: When set in “dE” or “SP” variable speed operating modes, the circulator will always run at full speed

for the first 3 minutes to ensure consistent water temperature for the sensors. Simply power down the pump and restart

for an additional 3 minutes of full speed run time to continue purging. Repeat if necessary.

PROGRAMMING CHART

MODE OPERATING

MODE

MODE

NUMBER

DEFAULT

SETTING

MINIMUM

SETTING

MAXIMUM

SETTING

Constant Power

(Fixed Speed) CP 2 SP4 SP1 SP4

Set Point

(Variable Speed) SP 3 105°F 65°F 220°F

“Delta T” (Δ

T)

(Variable Speed) dE 4 20°F 5°F 50°F

NOTE: Mode Number 1 is used solely to set the Operating Modes – CP, SP, dE.

PROGRAMMING THE HEC-2 CIRCULATOR:

3

1. CP – Constant Power Mode (Fixed Speed):

1.1 Setting the circulator to “CP” Mode:

1.1.1 Press and release the arrow button until the number 1 is displayed on the red LED screen.

1.1.2 Simultaneously press and hold both the and arrow buttons until the number 1 begins to

flash – release the arrow buttons.

1.1.3 Press and hold the arrow button. The current mode will display on the red LED screen. After

5 seconds, the modes will begin to scroll through the mode options. Once the “CP” mode is

displayed, release the arrow button.

1.1.4 To lock the “CP” mode, simultaneously press and hold the and arrow buttons until the

red LED stops flashing. The Constant Power mode is now set and locked.

QUICKSET PROGRAMMING – Constant Power Mode

1. Press and release S – number 1 should display.

2. Simultaneously press and hold buttons – number 1 flashes – release buttons.

3. Press and hold – scroll to “CP” – release .

4. Press and hold arrow buttons until LED stops flashing to save setting.

5. “CP” mode is now locked – proceed to “Verify the circulator is in “CP” mode.

CAUTION: Never run the circulator dry or permanent damage may result.

ATTENTION: Ne laissez jamais le circulateur tourner à sec, des dommages permanents peuvent en résulter.

4

1.2 Verify the circulator is in “CP” Mode:

1.2.1 Press and release the arrow button. The number 1 should

display in red.

1.2.2 Press and hold the arrow button. The number 1 will change

to

“

CP”.

1.3 Setting the speed selection when in “CP” Mode:

1.3.1 Press and release the arrow button until the number 2 is displayed on the red LED screen.

1.3.2 Simultaneously press and hold the and arrow buttons until the number 2 begins to flash

– release the arrow buttons.

1.3.3 Press and hold the button. The default SP4 speed number will begin to flash. After 5 seconds,

the speed number will scroll from SP1 to SP4. Once the desired speed selection is reached,

release the arrow button. The number 2 will reappear on the LED display.

1.3.4 To lock the speed selection, press and hold both and buttons until the number 2 stops

flashing. The speed selection is now set and locked.

1.4 Verify the circulator speed change:

1.4.1 Press and release the arrow button until the number 2 is displayed on the red LED screen.

1.4.2 Press the arrow button and hold. The speed setting will display on the red LED screen.

QUICKSET PROGRAMMING – Constant Power (Fixed Speed) Mode

1. Press and release until number 2 displays.

2. Simultaneously press and hold buttons – number 2 flashes – release buttons.

3. Press and hold – scroll to desired speed selection – release .

4. Press and hold arrow buttons until LED stops flashing to save setting.

5. Speed selection is locked – proceed to “Verify the circulator speed change”.

NOTE: To determine which speed selection is appropriate for your system, please refer to the family of pump

curves on page 8.

2. SP – Set Point Mode:

2.1 Setting the circulator to “SP” Mode:

2.1.1 Press and release the arrow button until the number 1 is displayed on the red LED screen.

2.1.2 Simultaneously press and hold both the and arrow buttons until the number 1 begins to

flash – release the arrow buttons.

2.1.3 Press and hold the arrow button. The current mode will display on the red LED screen. After

5 seconds, the modes will begin to scroll through the mode options. Once the “SP” mode is

displayed, release the arrow button.

2.1.4 To lock the “SP” mode, simultaneously press and hold the and arrow buttons until the

red LED stops flashing. The Set Point mode is now set and locked.

QUICKSET PROGRAMMING – Set Point Mode

1. Press and release S – number 1 should display.

2. Simultaneously press and hold buttons – number 1 flashes – release buttons.

3. Press and hold – scroll to “SP” – release .

4. Press and hold arrow buttons until LED stops flashing to save setting.

5. “SP” mode is now locked – proceed to “Verify the circulator is in “SP” mode.

2.2 Verify the circulator is in “SP” Mode:

2.2.1 Press and release the arrow button until the number 1 is

displayed on the red LED screen.

2.2.2 Press and hold the arrow button and the red LED will dis-

play “SP”.

2.3 Setting the Set Point Temperature:

2.3.1 Press and release the arrow button until the number 3 is displayed on the red LED screen.

2.3.2 Simultaneously press and hold the and arrow buttons until the red number 3 begins to flash

– release the arrow buttons.

2.3.3 Press and hold the button and the default set point temperature of 105°F will display and

flash in red. After 5 seconds the temperature will scroll in increments of 1°F. The set point tem-

perature can be set for any temperature from 65°F to 220°F. Once the desired temperature is

reached, release the arrow button. The number 3 will reappear on the LED screen.

2.3.4 To lock the “SP” mode, simultaneously press and hold the and arrow buttons until the

number 3 stops flashing. The set point temperature is now set and locked.

2.4 Verify the circulator Set Point Temperature:

2.4.1 Press and release the arrow button until the number 3 is

displayed on the red LED screen.

2.4.2 Press and hold the arrow button and the red LED will dis-

play the set temperature (for example 140°F).

QUICKSET PROGRAMMING – Set Point Mode Temperature

1. Press and release until number 3 displays.

2. Simultaneously press and hold buttons – number 3 flashes – release buttons.

3. Press and hold – scroll to desired temperature – release S .

4. Press and hold arrow buttons until LED stops flashing to save setting.

5. Temperature is locked – proceed to “Verify the circulator Set Point Temperature”.

Supply

Sensor P1

Diagram No. 1a: Radiant Injection Mixing

2.5 Installing the temperature sensor in “SP” mode:

2.5.1 Attach one sensor to supply line using tie wraps provided.

(See Diagram No. 1a, 1b, and 1c,)

2.5.2 Add insulation to cover sensor.

2.5.3 Wire supply sensor to #3 and #2 (COM) connections on terminal plug.

2.5.4 Press terminal plug into terminal strip on pump.

Supply

Sensor

P1

Diagram No. 1b: Boiler Protection By-Pass

Duct

Supply

Sensor

P1

Diagram No. 1c: Fan Coil Fixed Temperature

5

CAUTION: Do not attempt to remove LED panel from circulator. Serious damage to circulator electronics may result.

ATTENTION: N'essayez pas de retirer le panneau de LED du circulateur. Des dommages sérieux à l'électron-

ique du circulateur peuvent en résulter.

3.4 Verify the circulator “∆

T

” temperature range:

3.4.1 Press and release the arrow button until the number 4 is

displayed on the red LED screen.

3.4.2 Press and hold the arrow button and the set “∆

T

” tem-

perature range will be displayed on the red LED screen (for

example, 20ºF ∆

T)

.

3.3.3 Press and hold the arrow button and the default “∆

T

” temperature of 20°F will begin flash-

ing. After 5 seconds, the number will begin to scroll in increments of 1°F. “∆

T

”

t

emperature

range can be set from 5°F to 50°F. Once the desired “∆

T

” temperature is reached, release the

button. The number 4 will reappear on the LED screen.

3.3.4 To lock the “∆

T

” temperature range, simultaneously press and hold the and arrow but-

tons until the red LED stops flashing. The “∆

T

” temperature range is now set and locked.

QUICKSET PROGRAMMING – “∆

T

” Temperature Range

1. Press and release until number 4 displays.

2. Simultaneously press and hold buttons – number 4 flashes – release buttons.

3. Press and hold – scroll to desired “∆

T

” temperature range – release .

4. Press and hold arrow buttons until LED stops flashing to save setting.

5. Temperature range is locked – proceed to “Verify the circulator “∆

T

” temperature range”.

3. dE – “Delta T” (∆

T)

Mode:

3.1 Setting the circulator to “dE” Mode:

3.1.1 Press and release the arrow button until the number 1 is displayed on the red LED screen.

3.1.2 Simultaneously press and hold both the and arrow buttons until the number 1 begins to

flash – release the arrow buttons.

3.1.3 Press and hold the arrow button. The current mode will display on the red LED screen. After

5 seconds, the modes will begin to scroll through the mode options. Once the “dE” mode is

displayed, release the arrow button and flashing number 1 will reappear.

3.1.4 To lock the “dE” mode, simultaneously press and hold the and arrow buttons until the red

LED stops flashing. The “dE” mode is now set and locked.

3.2 Verify the circulator is in “dE” Mode:

3.2.1 Press and release the arrow button until the number 1 is dis-

played on the red LED screen.

3.2.2 Press and hold the arrow button and the red LED will dis-

play “dE”.

3.3 Setting the circulator “Delta T” (∆

T)

temperature range:

3.3.1 Press and release the arrow button until the number 4 is displayed on the red LED screen.

3.3.2 Simultaneously press and hold both the and arrow buttons until the number 4 begins to

flash – release both arrow buttons.

QUICKSET PROGRAMMING – “dE” Mode

1. Press and release – number 1 should display.

2. Simultaneously press and hold buttons – number 1 flashes – release buttons.

3. Press and hold – scroll to “dE” – release – flashing number 1 will reappear.

4. Press and hold arrow buttons until LED stops flashing to save setting.

5. “dE” mode is now locked – proceed to “Verify the circulator is in “dE” mode”.

6

CAUTION: Do not attempt to remove LED panel from circulator. Serious damage to circulator electronics may

result.

ATTENTION: N'essayez pas de retirer le panneau de LED du circulateur. Des dommages sérieux à l'électron-

ique du circulateur peuvent en résulter.

“Delta T” Across a

Series Loop System

Using Zone Valves

M

M

Return

Sensor

M

“Delta T” Across

Multi-Zone Radiant Manifolds

with Loop Actuators

iSeries-R

B

C

A

B

C

A

MMMMMMMM

Outdoor

Sensor

Boiler

Sensor

Diagram No. 2

Supply

Sensor

Supply

Sensor

Return

Sensor

4. Troubleshooting Guide:

The Taco HEC-2 circulator does not require maintenance. Should an error code appear in the

red LED display, please contact the Taco factory at (401) 942-8000 and request a technical

service representative.

4.1 Troubleshooting Error Codes:

Listed below are potential diagnostic error codes which will appear on the HEC-2 Bumble

Bee LED display in case of a malfunction.

EXAMPLE

3.5 Installing the temperature sensors in “dE” Delta T Mode:

3.5.1 Attach one sensor to supply line and one sensor to return line.

Refer to Diagram No. 2 for installation.

3.5.2 Add insulation to cover sensors.

3.5.3 Wire supply sensor to #3 and #2 (COM) connections on terminal plug.

3.5.4 Wire return sensor to #1 and #2 (COM) connections on terminal plug.

3.5.5 Press terminal plug into terminal strip on pump.

ERROR CODE DESCRIPTION CORRECTIVE ACTION

E01 Motor over current Probable debris in rotor. Pump may need to be replaced.

E02 Supply sensor fault Check wiring connections or install new sensor. (Pins 2 and 3)

E03 Return sensor fault Check wiring connections or install new sensor. (Pins 1 and 2)

E04 PC board over temper-

ature Probable malfunction on PC board. Replace pump.

E05 Safety shutdown Probable locked or seized rotor. Occurs after pump tries to start eight times

unsuccessfully. Pump may need to be replaced.

7

LIMITED WARRANTY STATEMENT

Taco, Inc. will repair or replace without charge

(at the company’s option) any Taco HEC-2 High

Efficiency circulator or circulator part which is

proven defective under normal use within three

(3) years from the date of manufacture.

In order to obtain service under this warranty, it

is the responsibility of the purchaser to promptly

notify the local Taco stocking distributor or Taco

in writing and promptly deliver the subject product

or part, delivery prepaid, to the stocking distrib-

utor. For assistance on warranty returns, the

purchaser may either contact the local Taco

stocking distributor or Taco. If the subject prod-

uct or part contains no defect as covered in this

warranty, the purchaser will be billed for parts

and labor charges in effect at time of factory

examination and repair.

Any Taco product or part not installed or operated

in conformity with Taco instructions or which

has been subject to misuse, misapplication, the

addition of petroleum-based fluids or certain

chemical additives to the systems, or other

abuse, will not be covered by this warranty.

If in doubt as to whether a particular substance

is suitable for use with a Taco product or part, or

for any application restrictions, consult the

applicable Taco instruction sheets or contact

Taco at (401-942-8000).

Taco reserves the right to provide replacement

products and parts which are substantially similar

in design and functionally equivalent to the

defective product or part. Taco reserves the right

to make changes in details of design, construc-

tion, or arrangement of materials of its products

without notification.

TACO OFFERS THIS WARRANTY IN LIEU OF

ALL OTHER EXPRESS WARRANTIES. ANY

WARRANTY IMPLIED BY LAW INCLUDING

WARRANTIES OF MERCHANTABILITY OR

FITNESS IS IN EFFECT ONLY FOR THE DURA-

TION OF THE EXPRESS WARRANTY SET

FORTH IN THE FIRST PARAGRAPH ABOVE.

THE ABOVE WARRANTIES ARE IN LIEU OF

ALL OTHER WARRANTIES, EXPRESS OR

STATUTORY, OR ANY OTHER WARRANTY

OBLIGATION ON THE PART OF TACO.

TACO WILL NOT BE LIABLE FOR ANY SPE-

CIAL, INCIDENTAL, INDIRECT OR CONSE-

QUENTIAL DAMAGES RESULTING FROM THE

USE OF ITS PRODUCTS OR ANY INCIDENTAL

COSTS OF REMOVING OR REPLACING

DEFECTIVE PRODUCTS.

This warranty gives the purchaser specific

rights, and the purchaser may have other rights

which vary from state to state. Some states do

not allow limitations on how long an implied

warranty lasts or on the exclusion of incidental

or consequential damages, so these limitations

or exclusions may not apply to you.

COMFORT MADE EASY®

TACO, INC., 1160 Cranston Street, Cranston, RI 02920 Telephone: (401) 942-8000 FAX: (401) 942-2360.

TACO (Canada), Ltd., 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. Telephone: 905/564-9422. FAX: 905/564-9436.

Visit our web site at: http://www.taco-hvac.com

Printed in USA

Copyright 2012

TACO, Inc.

FLOW-GPM

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

FLOW-M3/H

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

MODEL HEC-2 PERFORMANCE CURVES

TOTAL HEAD - FEET

TOTAL HEAD - METERS

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

0246810 12 14 16

Speed 1 - 9Watts

Speed 2 - 22 Watts

Speed 3 - 32 Watts

Speed 4 - 42 Watts

1

2

3

4

4

3

1

2

8