Armstrong ASTRO 220SSU Bedienungsanleitung

Installation

and operating

instructions

Astro 2, 3-speed

circulator models

File No: 10.89

Date: july 27, 2012

Supersedes: 10.891

Date: july 18, 2012

contents

1.0 Introduction 4

2.0 Installing 4

2.1 Terminal box 4

2.2 Electrical wiring 5

3.0 Check valve removal (optional) 5

4.0 Start up 5

5.0 Installation troubleshooting guide 6

installation &

operating instructions

Astro 2, 3-speed

circulator models

These installation and operating instructions are applicable to the

following Astro 2 models.

1.0 introduction

You are about to install a pump from the ﬁnest multi-speed wet

rotor circulator line on the market today. The Armstrong Astro

23-speed circulators are designed for closed hydronic or pota-

ble water systems. Their intended use is for circulating water or

glycol solutions. For pumping domestic water use non-ferrous

no lead bronze or stainless steel body pump construction.

The Astro 2 3-speed operates extremely quietly and is lubri-

cated by the system liquid being pumped by the circulator.

These circulators are designed to work at temperatures and

pressures up to 230°f (110°c) and 150 psi. For no lead bronze

and stainless steel pumps used in potable water systems, it is

recommended that the operating temperature of the ﬂuid be

kept as low as possible (i.e. below 150°f/66°c) to avoid precipi-

tation of calcium.

When unpacking the circulator, inspect for any damage that

may have occurred during transit. Check for loose, missing or

damaged parts.

2.0 installing

We recommend that any soldering be done before the pump

is actually installed. This will eliminate the possibility of solder

dropping into the pump body.

Thoroughly ﬂush the system out before installing the circulator.

Before Installing, check that the ﬂow direction of the water

through the pump body matches the arrow on the circulator

body. The circulator is supplied for up discharge installation.

Install the circulator in either the outlet or inlet line to the boiler

or hot water heater. It is important to install these circulators

with the split between the circulator body and the motor in a

vertical position. This ensures ecient operation.

See installation examples.

The circulator shaft must always be in a horizontal position.

(The piping can be in a horizontal or vertical run.) Isolation

valves should be installed on the discharge and suction side of

the pump to facilitate service.

2.1 terminal box

Always install the circulator with the terminal box above or be-

side the motor. If the terminal box is under the motor as initially

mounted, remove the motor mounting screws and rotate the

motor to the proper position. (See example.)

Ensure the gasket is intact and seated before evenly retighten-

ing the mounting screw to 4.5 - 5.5 lb/ft (6 - 7.5 Nm). To ensure

the rotor still spins freely, temporarily remove the plug (located

in the middle of the nameplate), insert a ﬂat head screwdriver

into the slot in the end of the rotor shaft and turn.

Retighten the plug to 1.5 - 2 lb/ft (2 -2.7 Nm). Ensure no water

leak at all sealing contacts.

incorrect installationscorrect installations

astro 2 models

model power supply rating

astro 220ssu

115v, 60hz

33w, 0.29a

astro 225ssu 83w, 0.69a

astro 225bs ½" swt 75w, 0.64a

astro 225bs O" swt 75w, 0.64a

astro 230ss 97w, 0.81a

astro 230ci 97w, 0.81a

astro 230ci-r 97w, 0.81a

astro 250ss 117w, 0.98a

astro 250ci 117w, 0.98a

astro 250ci-r 117w, 0.98a

astro 280ci 218w, 1.9a

astro 290ci 218w, 1.9a

installation &

operating instructions

Astro 2, 3-speed

circulator models

Do not hang items or articles of clothing on the pump as air

must be able to circulate freely through the motor. Do not

operate the circulator without the motor plug installed.

2.2 electrical wiring

The electrical wiring must be installed strictly in accordance

with national electrical codes, local codes and regulations.

1Electrical installation should be conducted by a

qualiﬁed electrician.

2Always make sure electric power is disconnected before

wiring the circulator.

The motor is designed for 60 Hz, 1phase, 115 volt power.

Wire shall be 14 to 16 gauge solid wire or 16 to 18 gauge

stranded wire.

To wire, loosen the screw from the terminal box cover and

remove the screw and cover.

Insert wires through supplied liquid-seal connector (installed)

or included ½" npt adaptor or other strain relief connector

(not provided).

Strip ³/af" of insulation from the ends of the three wires to

be connected.

To insert the wires into the terminal strip, ﬂip the terminal lever

away from the wire opening and press down ﬁrmly. Insert the

stripped wire into the opening and release the lever. Tug on the

wire gently to ensure it is secured.

Connect the hot wire to terminal 'l', the neutral wire to terminal

'n', and the ground wire to terminal

Tighten the terminal box cover.

The motor is thermally protected so overload protection is not

necessary. All that is required is a fused plug or circuit breaker

in the power line. Electrical information can be found on the

nameplate of the motor.

3.0 check valve removal (optional)

Using a pair of needle-nose pliers, grip one of the ﬂat wings of

the check valve and gently pull the valve out vertically.

4.0 start up

These circulators are maintenance free. Self-lubricated by the

system ﬂuid, these circulators have no seals to leak or coupling

to break.

A proper installation practice recommends to thoroughly ﬂush

the system clean of all foreign materials prior to installing

the circulator.

Fill the system before starting.

plug

installation &

operating instructions

Astro 2, 3-speed

circulator models

Speed setting of Astro 2 3-speed circulators:

The speed of these pumps can be adjusted with a 3-speed

rotary switch. On speed setting 1, the pump operates at

approximately half the performance of the speed setting 3

(maximum speed) and consumes about half the power of full

speed operation.

warning

Never operate the circulator dry as permanent damage may

occur. Never shut o the discharge or restrict suction ﬂow

while the circulator is operating.

The venting of the rotor chamber may be done automatically.

However, to assure proper and faster venting of this circulator,

we recommend the manual venting procedure as follows:

1Place a container under the back of the circulator to catch

any water that may run out.

2Be sure power to the circulator is o at the fuse or

circuit breaker.

3Loosen plug on the back of the motor but do not remove.

4Continue until water appears.

5After a sucient amount of water free of air bubbles has

passed, retighten the plug.

6The circulator can now be started.

liquid temperature minimum inlet pressure

167°f (75°c) 1.6 ft (0.5 m)

194°f (90°c) 9.2 ft (2.8 m)

230°f (110°c) 36.1 ft (11.0 m)

fault possible cause remedy

Noise from radiator Excessive pressure passing the thermostatic

valve.

• Reduce the speed setting. Flow decreases will

reduce system pressure and eliminate the noise.

The radiator is not giv-

ing o any heat

The thermostatic valve is jammed or blocked. • Shut o all other radiators in the system, and

set the pump at maximum speed.

• Once the blockage has been dislodged

reopen the radiators and adjust pump to origi-

nal speed setting.

The heating system is not balanced. • Re-assess the system. Fit new commissioning

valves on all radiators (may be integrated in the

thermostatic valves) to enable an even distribu-

tion of the ﬂow.

Pump generates little

or no output

Incorrect discharge direction. • Turn pump 180°

Dirty impeller • Open pump and clean impeller

note: Close isolation valves if present

Suction port blocked • Open pump and clean housing

note: Close isolation valves if present

Outlet blocked • Clean isolation valves

Isolation valve closed • Open isolation valves

Dirty strainer • Clean strainer

Air in the pump • Switch o pump and open bleed screw to vent.

Pump at lowest/medium speed level • Set pump to the next higher speed level.

Pump set point is too low • Increase set point on the pump or controller.

5.0 installation troubleshooting guide

installation &

operating instructions

Astro 2, 3-speed

circulator models

fault possible cause remedy

Pump stopped,

no power

Power supply interrupted • Check the power supply. Attach external power control

if necessary.

Fuse tripped or circuit breaker opened • Repair short-circuited wire. Repair loose contact.

• Check for the properly rated fuse.

• Check pump motor and lead.

Pump stopped, power

supply present

Thermal switch has actuated • Reduce ambient temperature.

• Clean blocked or slow rotating pumps.

Pump does not start • Open air vent screw and unlock shaft. Clean pump.

• Increase speed/set point.

• Replace pump.

Noises in system, ther-

mostatic valves/pipes

Pump output too high • Reduce speed level.

• Open bypass/valve.

• Install circuit balancing valves to adjust ﬂow.

• Check pump selection/system. Adjust pump. Check

system /gauges.

• Replace pump.

Noisy pump Air in pump • Open bleed screw and vent pump. Vent and top up

system with water.

• Check expansion tank.

• Install air separator.

Cavitation sounds • Increase inlet pressure.

• Reduce temperature.

• Throttle back pump.

• Reduce speed.

Resonance noises • Use sound insulation material between the pump

and surface to reduce resonance noise. Install

expansion joints. Install ﬁxture to change system’s

natural frequency.

• Adjusts pump speed.

• Replace pump/motor.

Knocking from foreign bodies in the

pump/or on valve

• Clean impeller.

• Adjust valve pressure. Adjust valve spring.

• Turn valve around if installed incorrectly.

• Replace pump.

buffalo

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manchester

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shanghai

armstrongintegrated.com

#59, first floor, 3rd main

margosa road, malleswaram

bangalore, india

560 003

+91 (0) 80 4906 3555

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manchester

united kingdom

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+44 (0) 8444 145 145

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+716 693 8813

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toronto, ontario

canada

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+416 755 2291

no. 1619 hu hang road, xi du township

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p.r.c.

201401

+86 21 3756 6696

armstrong integrated

established 1934

birmingham

heywood wharf, mucklow hill

halesowen, west midlands

united kingdom

b62 8dj

+44 (0) 8444 145 145

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