APPLICATION:
The Taco 2400 Series Hi-Capacity circulators are designed
for use on a wide range of hydronic heating, cooling or
domestic hot water recirculating systems. Features include
a compact, quiet running, close-coupled, thermally protect-
ed motor assembly with permanent split-capacitor and per-
manently lubricated bearings. A stainless steel shaft, sili-
con-carbide mechanical seal and non-ferrous impeller
make the 2400 Series circulator an ideal choice for years of
maintenance-free operation.
Note: Use Stainless Steel body circulators on open
systems for the best corrosion protection.
OPERATING SPECIFICATIONS:
• Maximum Working Pressure: 150 psi (1034 kPa)
• Maximum Operating Temperature: 225ºF (107ºC)
• Electrical Rating: 115V/60Hz/1Ph or 230V/60Hz/1Ph
REMOVAL OF EXISTING PUMP FROM SYSTEM PIPING:
1. Disconnect and lock-out electrical supply to pump.
2. Close isolation valves on suction and discharge sides
of pump. If valves are not installed, the system may
need to be drained.
3. Remove capacitor box cover and disconnect electrical
supply lines to pump.
4. Loosen flange bolts and shift pump body slightly to
relieve any remaining system pressure.
5. Remove flange nuts/bolts and pump from system.
INSTALLATION OF 2400 SERIES CIRCULATOR:
A. Location:
• Install pump with sufficient room for future inspection,
maintenance and service.
• It is recommended that isolation valves be installed on
the pump suction and discharge to simplify future ser-
vice or replacement without draining the system.
1. Using teflon tape or high quality thread sealant, install
Taco companion flanges on threaded pipe ends to
ensure proper fit-up and leak protection. (See Table 1
for companion flange set specifications.)
2. Minimize pipe strain on pump by using pipe hangers on
Instruction Sheet
2400 Series Hi-Capacity Circulator
102-361
SUPERSEDES: December 19, 2014
EFFECTIVE: March 2, 2015
Plant ID# 001-3932
INSTALLER: Please leave these instructions for
owner’s use.
CAUTION: Taco 2400 Series circulators are
designed for indoor use only.
CAUTION: This pump has a mechanical seal
which may require service. Allow access for
periodic inspection and leak detection.
Provide adequate drainage to prevent prop-
erty damage.
CAUTION: To prevent injury, allow system
water to cool to 100ºF before removing old
pump or draining system. Leave drain valve
open until service/replacement is complete.
WARNING: Do not use in swimming pool or spa
areas; pump has not been investigated for this
application.
WARNING: To avoid electrical shock, disconnect the
power supply to the circulator and the main electrical
unit.
CAUTION: When installing electrical connections,
do not apply mechanical loads to the capacitor
box; otherwise, retaining screws may be pulled out
of the housing, making circulator unusable.
CAUTION:
1. The addition of petroleum based fluids or cer-
tain chemical additives to systems utilizing TACO
equipment voids the warranty.
2. Use supply wires suitable for 90°C – ATTEN-
TION: Employer des fils d´alimentation adequats
pour 90°C.
CAUTION: Installations at higher 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.
STAINLESS STEEL
MODELS ONLY
FOR INDOOR
USE ONLY
