Install Instructions

installation &
operating instructions
E.2 Series high e ciency
circulator
4
read carefully before installing
& operating the circulator
installer: please leave this manual for
the owner’s use
You are about to install an E.2 Series circulator – a high–
e ciency pump from Armstrong. E.2 Series circulators are
designed for heating and cooling in hydronic, geothermal or
solar systems and circulating water, ethylene or propylene
glycol/water solutions. For pumping domestic (potable) water,
Armstrong recommends the use of circulators with bronze
body construction.
The E.2 Series circulators are extremely e cient and quiet.
They utilize a state of the art permanently lubricated bearing
system designed for many years of trouble-free operation.
They feature a permanent-split capacitor motor with thermal
protection.
1.0 operating limits
Maximum operating pressure:
150 psi (1034 kPa)
Maximum operating temperature:
All standard models 230°f (110°c)
Minimum operating temperature:
All standard models 32°f (0°c)
Electrical rating:
For models with T hp motors: 120 v, 1 phase, 60 Hz or
208/240 v, 1 phase, 60 Hz
For models with Q hp motors: 120 v, 1 phase, 60 Hz or
208/240/277 v, 1 phase, 60 Hz
When unpacking the circulator, inspect for any damage that
may have occurred during transit. Check for loose, missing or
damaged parts.
this pump is for indoor use only
Before installing the circulator, proper installation practice
recommends a thorough fl ush of the hydronic system, ensuring
removal of all foreign materials.
warning
Mount with motor shaft horizontal and terminal box
above centerline (cl) only!
The circulator is supplied for up-discharge.
cl
motor shaft
(internal)
For alternate discharge orientation:
1 Loosen the four motor mounting bolts
2 Rotate the volute to match piping orientation
3 Observe fl ow direction arrow on volute
4 Ensure volute gasket is properly seated
5 Retighten mounting bolts evenly to 5 lb/ft (6.7 N/m)
6 Ensure the impeller spins freely
2.0 electrical wiring
The electrical wiring must be installed in strict accordance with
the Canadian Electrical Code or the U.S. National Electrical
Code, as well as local codes and regulations.
1 Electrical installation should be conducted by a qualifi ed
electrician.
2 The motors of E.2 Series circulators are designed for 60 Hz,
1 phase, 120 v or 240 v service only. (Please refer to the
rating label on the circulator’s terminal box to determine the
correct voltage.)
3 Always make sure the electric power is disconnected and
locked out before wiring the circulator.
4 To wire, loosen the screw from the terminal box cover and
remove the screw and cover.
5 Install the appropriate size conduit end to one of the holes on
either side of the terminal box.
6 For 120 v models: Referring to diagram 1 below, connect the
black, hot, (L) and white, neutral, (N) leads of the supply
wire to the black and white motor leads respectively inside
the terminal box. Connect the ground wire to any one of the