Simer Pumps 2520ULST User Manual

©2008 SIM813 (1/17/08)

OWNER’S MANUAL

Condensate Pumps

NOTICE D’UTILISATION

Pompes de récuération
des eaux condensées

MANUAL DEL PROPIETARIO

Bombas de condensado

Installation/Operation/Parts

For further operating, installation,
or maintenance assistance:

Call 1-800-468-7867

English . . . . . . . . . . . . . . . Pages 2-6

Installation/Fonctionnement/Pièces

Pour plus de renseignements
concernant l’utilisation,
l’installation ou l’entretien,

Composer le

1 [phone]

Français . . . . . . . . . . . . Pages 7-11

Instalación/Operación/Piezas

Para mayor información sobre el
funcionamiento, instalación o
mantenimiento de la bomba:

Llame al 1-800-468-7867

Español . . . . . . . . . . .Paginas 12-16

Model 2520ULST

293 Wright St., Delavan, WI 53115

Phone:

1-800-468-7867
1-800-546-7867

Fax:

1-800-390-5351

5499 1006

Safety 2

For parts or assistance, call Simer Customer Service at 1-800-468-7867 / 1-800-546-7867

READ ALL INSTRUCTIONS
BEFORE STARTING INSTALLATION

General Safety Information

Electrically powered condensate pumps normally give
many years of trouble-free service when correctly
installed, maintained, and used. However, unusual cir­cumstances (interruption of power to the pump,
algae/debris in the reservoir, electrical or mechanical fail­ure in the pump, etc.), may prevent your pump from
functioning normally. Consequently, any condensate
pump installed in an area susceptible to water damage
must be connected to a failure alarm or water sensing
device or include an auxiliary safety shutoff switch acti­vated by high water in the pump reservoir and connect­ed to the thermostat of the furnace/AC unit. See the
“Troubleshooting Chart” in this manual for information
about common condensate pump problems. For more
information, see your dealer or call customer service at
1-800-468-7867.

1. Drain all water from system before servicing.

2. Periodically inspect reservoir, pump, and system com­ponents. Keep free of debris and foreign objects.
Perform routine maintenance as required.

3. When installing an electrically driven pump, follow all
electrical and safety codes that apply.

4. Make certain power source conforms to requirements
of your equipment.

5. Protect electrical cord from sharp objects, hot sur­faces, oil, and chemicals. Avoid kinking cord. Replace
or repair damaged or worn cords immediately.

6. Personal Safety:
a. Wear safety glasses at all times when working with

pumps.

b. Keep work area clean, uncluttered and properly

lighted – replace all unused tools and equipment.
c. Keep visitors at a safe distance from work area.
d. Make workshop child-proof – with padlocks, master

switches, and by removing starter keys.

Risk of electric shock. If your basement
has water or moisture on floor, do not walk on wet area
until all power has been turned off. If shut-off box is in
basement, call electric company to shut-off service to
house, or call your local fire department for instructions.
Failure to follow this warning can result in fatal electrical
shock.

When pump is plugged in, do not handle pump, cord, or
plug with wet hands or when standing on a wet or
damp surface or in water. Unplug pump before servicing
it or doing any maintenance on it.

ATTACH ORIGINAL RECEIPT HERE FOR WARRANTY CONSIDERATION.

SIMER warrants to the original consumer purchaser (“Purchaser”) of its products that they are free from defects in material or workmanship.
If within twelve (12) months from the date of the original consumer purchase any such product shall prove to be defective, it shall be repaired or replaced at

SIMER’s option, subject to the terms and conditions set forth below. Your original receipt of purchase is required to determine warranty eligibility.

Exceptions to the Twelve (12) Month Warranty

Product/Model No. Warranty Period

M40P, M40, BW85P, CM10, CMK 90 days

2330, 2300, 2310, 2955, 2956, 2957, 2960, A5500, 2520ULST 2 Years

4" Submersible Well Pumps, 3984, 3983, 2975PC, 2958, 2985, 3075SS 3 Years

Pre-Charge Water System Tank, 3986, 3985, 2956 5 Years

3988, 3995, 3997, 3963 Lifetime

General Terms and Conditions

Purchaser must pay all labor and shipping charges necessary to replace product covered by this warranty.This warranty shall not apply to acts of
God, nor shall it apply to products which, in the sole judgement of SIMER, have been subject to negligence, abuse, accident, misapplication,
tampering, alteration; nor due to improper installation, operation, maintenance or storage; nor to other than normal application, use or service,
including but not limited to, operational failures caused by corrosion, rust or other foreign materials in the system, or operation at pressures in excess
of recommended maximums.

Requests for service under this warranty shall be made by returning the defective product to the Retail outlet or to SIMER as soon as possible after
the discovery of any alleged defect. SIMER will subsequently take corrective action as promptly as reasonably possible. No requests for service under
this warranty will be accepted if received more than 30 days after the term of the warranty.

This warranty sets forth SIMER’s sole obligation and purchaser’s exclusive remedy for defective products.
SIMER SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT DAMAGES WHATSOEVER.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS WARRANTIES. IMPLIED WARRANTIES, INCLUDING

BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL NOT
EXTEND BEYOND THE DURATION OF THE APPLICABLE EXPRESS WARRANTIES PROVIDED HEREIN.

Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so
the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights and you may also have other rights which vary
from state to state.

SIMER • 293 Wright Street • Delavan, WI U.S.A. 53115

Phone: [phone] • Fax: [phone]

E-Mail: [e-mail] • Web Site: http://www.simerpumps.com

For parts or assistance, call Simer Customer Service at 1-800-468-7867 / 1-800-546-7867

Installation 3

Fire and explosion hazard. Do not use this

pump to pump flammable or explosive liquids. Use pump
only with liquids compatible with pump component
materials. Do not use pump in explosive atmospheres.

Risk of flooding. If for any reason property

damage or personal injury can result from an inoperative
or leaking pump, an auxiliary switch backup system
and/or an alarm should be installed with pump.

INSTALLATION

Electrical shock and carbon monoxide
hazards. When mounting the pump on the side of the
furnace, make sure that the mounting holes clear the
heat exchanger and all wiring. The mounting screw for

the pump should touch only the pump reservoir flange
and the exterior sheet metal on the furnace. If in doubt or
if this is confusing, consult a qualified HVAC serviceman
or the furnace manufacturer.

Make sure that the tubing to the pump intake is fastened
securely so that it cannot come out of the pump intake
port. Check for local code requirements. You must com­ply with codes.

Check local codes for discharge water requirements.
Run the discharge line to a point outside the house if
possible. To do this easily, you may be able to run the
condensate discharge line out through the wall along
the AC freon line. Use the existing line if possible (when
replacing an existing pump).

Clamping the plastic discharge line to the check valve
with a 1/2" hose clamp (purchase separately) will help
to keep it in place, especially with older tubing (plastic
tubing tends to harden as it gets older).

Common locations for the end of the discharge line are:
A. Out a window or along the air conditioner freon line

to the outdoors.

B. To a floor drain (leave an air gap between the end of

the tube and the drain).

C. To a laundry tub or sink (leave an air gap above the

tub drain).

Mount pump on side of furnace (or on floor or
wall).

1

Run plastic tubing as shown into pump’s drain inlet
hole(s).

2

Run tubing as shown from hose barb on pump
discharge to floor drain or laundry tub.

3

Pump must be level!

From A.C.
Unit

Gas
Condensing
Furnace

Mount Pump

Pump can also be installed
on wall or floor. Allow at least
6-1/2” vertical clearance to
allow tank removal.

below all Heater
and A.C. Drains

At least 6-1/2”

5490 0906

Ceiling and Joists

Discharge tube should
slope down toward
outlet if possible

3/8" ID Tubing
To Floor Drain
or Laundry Tub.

Do not kink tube!

1/2" Hose
Clamp

5492 0906

Cut tubing at an angle
so that bottom of
reservoir doesn't close it.

Be sure tubing does not
interfere with float.

AC Unit

Furnace
Condensate
Drain

Plastic
Tubing

Condensate
Drain

5491 0906

1

2

1-1

" above
bottom of
reservoir

For parts or assistance, call Simer Customer Service at 1-800-468-7867 / 1-800-546-7867

Installation 4

With the unit plugged in and the discharge line installed,
fill the pump reservoir until the pump starts. Allow it to
pump down and shut itself off automatically to verify
proper operation through one complete cycle.

Safety Switch:

Most models include an automatic safety switch which
should be wired to activate an alarm or to cut off power
in the event of high water in the condensate reservoir.

If you must run additional wire from the low voltage
safety switch to the alarm or to the control wiring of your
furnace/AC unit, use at least 18 gauge (AWG) copper
wire rated at 105° C. Make connections with wire nuts
as shown.

If your installation allows interruption of heating or cool­ing, follow procedure 1, below.

If your installation does not allow interruption of heating
or cooling, follow procedure 2, “Safety Switch Sounds
Alarm”.

Risk of electrical shock. Disconnect
power to furnace/AC unit and be sure condensate pump
is unplugged before starting procedure.

1. Safety Switch Shuts Down Furnace/AC

A. Make sure the pump is unplugged.
B. Find the red wire in the bundle from the thermostat

and disconnect it from the furnace/AC unit.

C. Connect the red wire to one of the white wires

from the safety switch as shown in Figure 1.

D. Connect the other white wire from the switch to the

furnace/AC terminal strip where the red wire from

the thermostat was connected.
E. Plug in the pump.
F. The furnace/AC will now operate as long as the

condensate pump empties the reservoir. If the reser-

voir overfills, the switch will open and cut off the

power to the furnace/AC.

Risk of freezing/overheating. This installa-

tion will shut down the furnace/AC unit if the water level
in the pump reservoir rises to within about 1/2" from the
top of the reservoir (thereby stopping the production of
condensate and preventing flooding), but it will not allow
the furnace/AC unit to restart until the condensate pump
reservoir is emptied. It should be monitored so that in
case of high water in the reservoir, corrective action can
be taken before freezing/overheating occurs.

NOTICE: When installing the pump in a new home or after
a renovation project, be sure that debris in the duct work
does not get into the reservoir; it will clog the system.

2. Safety Switch Sounds Alarm

A. Make sure the pump is unplugged.
B. Remove the two screws holding the motor cover to

the pump deck. Remove the cover.

C. Do not disturb the two yellow wires going through

the deck and into the motor (they are potted into
the top of the motor so there are no wire ends visi­ble) .

D. Remove the white wire from the bottom terminal

(NC or Normally Closed) on the end of the safety
switch and reattach it to the upper terminal (NO or
Normally Open) on the end of the switch.

E. Run the white switch wires out through the notch

in the motor cover and replace the motor cover.
Make sure all wires (power cord and safety switch)
run through the notch. Hook the cover under the
catch on the deck and secure it with two screws.

F. Connect the white wires from the safety switch to

the alarm of your choice (purchase separately).
Consult the alarm manufacturer’s instructions for
correct connections to the alarm.

G. Plug in the pump.

Figure 1: Low Voltage Auxiliary Safety Switch
connection for Furnace/AC shutdown installation.

Hazardous voltage. Plug pump into a
115-volt outlet. Pump is double insulated; grounding
is not required.

4

Plug pump into a 115-volt outlet

that carries power that will not be
interrupted. Do not connect pump to
a fan or limit control circuit or the like.

Some Models include an
auxiliary safety switch.
Connect switch as
explained in "Safety Switch".

5493 0906

From ThermostatWire Nut

Condensate Pump

Red

White

White

White

Furnace/A.C.

Green

Yellow

Installation / Maintenance 5

For parts or assistance, call Simer Customer Service at 1-800-468-7867 / 1-800-546-7867

H. Risk of Flooding. With installation

No. 2 (“Safety Switch Sounds Alarm”), the alarm is
activated when the water level in the reservoir is
within about 1/2" of the top of the reservoir.
However,

the furnace/AC unit will continue to pro­duce condensate because the alarm will not shut it
down.

Monitor the installation so that in case of
high water level in the condensate reservoir you
can take action before the reservoir overflows and
flooding occurs.

Testing Auxiliary Safety Switch:

NOTICE: Some appliances may not start immediately

due to a built-in delay circuit that prevents rapid cycling
of the compressor.

1. Start appliance.

2. Unplug the condensate pump so that it cannot
pump out.

3. Pour water into the pump reservoir until it is
almost full.

4. As the water rises in the reservoir, the safety switch
should shut down the appliance or set off the alarm
(depending on the installation procedure used).

5. Plug in the condensate pump and allow it to empty
the reservoir. As the water level goes down in the
reservoir, the safety switch should reset, allowing the
appliance to start or shutting off the alarm.

MAINTENANCE

1. Disconnect the power to the furnace/AC unit and
unplug the pump.

2. Disconnect the tubing to the pump. Drain the tubing
into a container.

3. Remove the two mounting screws and remove the
pump from the furnace or wall. Dump the reservoir
into a floor drain or container.

4. After you have dumped the pump, remove the four
screws securing the reservoir to the pump deck. Lift
the deck/pump assembly off of the reservoir.

5. Turn the deck/pump assembly upside down and
remove the five screws holding the impeller cover to
the motor.

6. Remove the impeller cover. The rotor/ impeller
assembly may come out with it. If not, pull it out of
the rotor chamber in the motor. (You may have to
pull it hard to get it out against the magnetism in the
motor windings.)

7. Clean the impeller, rotor, rotor cavity, and O-Ring.
Use a rag to clean the O-Ring groove in the impeller
cover and the sealing surface on the bottom of the
motor block.

8. Clean out the reservoir.

9. Reassemble the impeller and the impeller cover;
tighten the screws carefully. Do not overtighten!

10. Turn everything right side up and reassemble the
reservoir to the deck. Be sure the impeller cover fits
into the molded ring in the bottom of the reservoir.
Fasten the reservoir with the four screws at the
corners.

11. Reinstall the pump on the furnace.

12. Plug in the pump, fill the reservoir, and run the
pump through one complete pump-down cycle to
be sure it works correctly.

13. The pump is ready for operation.

CLEANING THE CHECK VALVE

1. Unplug the condensate pump.

2. Remove the discharge line from the check valve.

3. Use a 9/16" wrench to remove the check valve from
the pump deck.

4. Inspect the valve for obstructions or damage. Clean
or replace it as needed.

5. Thread the valve back into the pump discharge by
hand, plus 1/2 turn with the wrench.
NOTICE: Don’t overtighten the valve, as over­tightening can distort the O-Ring that seals the valve,
causing leaks.

6. Plug in the pump, fill the reservoir, and run the
pump through one complete pump-down cycle to
be sure it works correctly.

7. The pump is ready for operation.

Figure 2: Low Voltage Auxiliary Safety Switch connec­tion for alarm circuit installation (does not shut down
furnace/AC unit).

1. Move white lead
from NC terminal to
NO terminal
as shown.

White

Common

White

NO

NC

3

2

C

1

2. Connect both
white leads to
alarm with wire
nuts as shown

Alarm

White

White

NO

NC

3

2

C

1

Common

Safety SwitchSafety Switch