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© Copyright 2010 Zoeller Co. All rights reserved.

Zoeller Pump Com pa ny war rants, to the pur chas er and 
sub se quent owner during the war ran ty period, every new 
Zoeller Pump Com pa ny product to be free from defects in 
material and workmanship under normal use and ser vice, 
when properly in stalled, used and main tained, for a period 
of two years from date of installation or 30 months from 
date of man u fac tur er, which ev er comes fi rst. Parts that fail, 
(within two years of in stal la tion or 30 months from date 
of man u fac tur er, which ev er comes fi rst) that in spec tions 
de ter mine to be de fec tive in ma te ri al or work man ship, will 
be repaired, replaced or remanufactured at Zoeller Pump 
Company’s  op tion, provided how ev er, that by so doing 
we will not be obligated to replace an entire as sem bly, the 
entire mechanism or the com plete unit. No al low ance will 
be made for shipping charg es, damages, labor or other 
charges that may occur due to prod uct fail ure, repair or 
replacement.

This warranty does not apply to any material that has been 
dis as sem bled without prior ap prov al of Zoeller Pump Com-
pany, sub ject ed to mis use, mis ap pli ca tion, neglect, altera-
tion, ac ci dent or act of God; that has not been in stalled, 
operated or main tained in ac cor dance with Zoeller Pump 
Com pa ny in stal la tion in struc tions; that has been ex posed 
to but not limited to the following: sand, gravel, cement, 
mud, tar, hy dro car bons or hydrocarbon de riv a tives (oil, 
gas o line, solvents, etc), wash tow els or fem i nine san i tary 
prod ucts, etc. or other abra sive or cor ro sive sub stanc es. 

Limited Warranty

This war ran ty is in lieu of all other war ran ties expressed 
or im plied; and we do not authorize any rep re sen ta tive or 
other person to assume for us any other liability in connec-
tion with our products.

Contact Zoeller Pump Company, 3649 Cane Run Road, 
Louisville, Kentucky 40211-1961, Attention: Customer 
Service Department to obtain any need ed repair or re-
 place ment of part(s) or additional in for ma tion pertaining 
to our warranty.

ZOELLER PUMP COMPANY EXPRESSLY DIS CLAIMS 
LIABILITY FOR SPE CIAL, CON SE QUEN TIAL OR IN CI -
DEN TAL DAM AG ES OR BREACH OF EX PRESSED OR 
IMPLIED WAR RAN TY; AND ANY IMPLIED WAR RAN TY 
OF FITNESS FOR A PAR TIC U LAR PUR POSE AND OF 
MER CHANT ABIL I TY SHALL BE LIM IT ED TO THE DU-
 RA TION OF THE EX PRESSED   WARRANTY.

Some states do not allow limitations on the duration of an 
implied warranty, so the above limitation may not apply to 
you. Some states do not allow the exclusion or limitation 
of incidental or con se quen tial damages, so the above lim i -
ta tion or exclusion may not apply to you.

This warranty gives you specifi c legal rights and you may 
also have other rights which vary from state to state.

Maintenance Guidelines

  Cleaning of Reservoir:

  1)  Remove entire pump from wall, if mounted.

  2)  Disassemble reservoir from the deck by inserting a screwdriver in either side of the deck.

  3)  Clean reservoir as needed
.
  4)  Reassemble reservoir to the deck.

 

Cleaning of Check Valve:

 

1)  Remove discharge line from valve.

  2)  Remove check valve with 9/16” wrench.

  3)  Visually check for obstructions or damage.

  4)  Replace valve by hand tightening, then tighten 1/2 turn with a 9/16” wrench. 
   

  Do not overtighten.

Summary of Contents for 521

Page 1: ...ch circuit sized according to the National Electrical 1 Inspect all materials Occasionally products are damaged during shipment If the unit is damaged contact your dealer before using 2 Carefully read all the literature provided to familiarize yourself with specific details regarding installation and use before attempting the installation These materials should be retained for future reference 1 C...

Page 2: ...cts etc or other abrasive or corrosive substances Limited Warranty This warranty is in lieu of all other warranties expressed or implied and we do not authorize any representative or other person to assume for us any other liability in connec tion with our products Contact Zoeller Pump Company 3649 Cane Run Road Louisville Kentucky 40211 1961 Attention Customer Service Department to obtain any nee...

Page 3: ... separately protected and properly grounded ground fault protected circuit DO NOT ever cut splice or damage power cord DO Ten Helpful Hints For Easy Installation Do s And Don t s For Installing A Unit NOT carry or lift pump by its power cord DO NOT use an extension cord with this condensate pump 5 DO NOT use a discharge pipe smaller than the pump discharge size 6 DO test pump immediately after ins...

Page 4: ...the furnace drain to the inlet hole s on the pump Refer to Figure 2 2 Figure 1 2 Figure 2 2 Figure 2 1 Note The drain line s should have a continuous downward slope to allow for gravity flow Note Local codes may require the use of a condensate neutralizer when using this pump Note Make sure the drain lines from the A C condenser are supported above the reservoir and no weight from the drain line i...

Page 5: ...low Figure 3 1 SK1764 STEP 3 Installation of Discharge Line STEP 4 Installation of Safety Switch SK1767 4 1 The pump safety switch should be used on 24V Class II control circuits only The pump safety switch connections are available on standard quick connect terminals located on the top cover Two wires with pre crimped connections may be plugged onto the COMMON and RUN terminals and wired into the...

Page 6: ...ntact Factory Refer to Maintenance section for cleaning instructions Check valve may allow some condensate to drain out of line into reservoir This is normal Check valve should be hand tight then tighten an additional 1 2 turn with a 9 16 wrench Condition Possible Cause Remedy Before servicing a pump always shut off the main power breakerandthenunplugthepump makingsureyouarenotstandinginwater anda...

Page 7: ...7 NOTES Copyright 2010 Zoeller Co All rights reserved ...

Page 8: ...IL TO P O BOX 16347 Louisville KY 40256 0347 SHIP TO 3649 Cane Run Road Louisville KY 40211 1961 502 778 2731 1 800 928 PUMP FAX 502 774 3624 www zoeller com Copyright 2010 Zoeller Co All rights reserved ...

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