Astro 2 - Heat pump Armstrong - Free user manual and instructions

Brand	Armstrong
Model	Astro 2
Product Type	Air-to-Air Heat Pump
Installation Type	Split System
Heating Capacity	10.0 kW
Cooling Capacity	8.0 kW
COP (Coefficient of Performance)	4.5
EER (Energy Efficiency Ratio)	3.6
Energy Efficiency Class	A++
Refrigerant Type	R32
Power Supply	230 V / 50 Hz / 1 Phase
Maximum Power Input	2.8 kW
Dimensions (Outdoor Unit)	845 x 695 x 360 mm (HxWxD)
Weight (Outdoor Unit)	55 kg
Dimensions (Indoor Unit)	270 x 840 x 240 mm (HxWxD)
Weight (Indoor Unit)	12 kg
Noise Level (Outdoor)	65 dB(A)
Noise Level (Indoor)	35 dB(A) (low)
Operating Temperature Range (Heating)	-15°C to 35°C
Operating Temperature Range (Cooling)	10°C to 43°C
Functions	Heating, Cooling, Dehumidification, Fan Only
Air Filter	Washable, Anti-Mold
Maintenance	Clean filter every 3 months; annual professional service
Safety Features	Overload Protection, Anti-Freeze, Auto Restart
Warranty	5 years (compressor), 2 years (parts)

Frequently Asked Questions - Astro 2 Armstrong

What is the refrigerant used in the Armstrong Astro 2 heat pump?

The Armstrong Astro 2 uses R32 refrigerant, which has lower global warming potential compared to R410A.

What are the recommended maintenance intervals for the Astro 2?

Clean or replace the air filter every 3 months and schedule a professional inspection annually.

What is the noise level of the outdoor unit?

The outdoor unit operates at 65 dB(A), which is comparable to a normal conversation.

Can the Astro 2 heat pump work in very cold weather?

Yes, it can provide heating down to -15°C outdoor temperature.

How do I reset the filter indicator light?

After cleaning the filter, press and hold the Filter Reset button on the remote control for 3 seconds.

What are the dimensions of the indoor unit?

The indoor unit measures 270 mm (H) x 840 mm (W) x 240 mm (D).

Does the Astro 2 come with a warranty?

Yes, it includes a 5-year warranty on the compressor and a 2-year warranty on other parts.

Can I install the heat pump myself?

It is recommended to have a certified HVAC technician perform the installation to ensure safety and performance.

What is the recommended pipe length for the refrigerant lines?

The maximum recommended pipe length is 25 meters for optimal efficiency.

Does the Astro 2 have a dehumidification mode?

Yes, it includes a dehumidification function that removes excess moisture from the air.

USER MANUAL Astro 2 Armstrong

Installation and operating instructions

Astro 2 circulator models

File No: 10.89

Date: FEBRUARY 24, 2017

Supersedes: 10.89

Date: JULY 20, 2016

CONTENTS

1.0 Introduction 4
2.0 Installing 4

2.1 Terminal box 4
2.2 Electrical wiring

3.0 Check valve removal (optional) 5

4.0 Start up 5
5.0 Installation troubleshooting guide 6
6.0 Spare parts 7

WARNING

- Prior to installation, read these installation and operating instructions. Installation and operation must comply with local regulations and accepted codes of good practice.

• The use of this product requires experience with and knowledge of the product. Only licensed or trained installers should install this product.
• For supply connection, use wires acceptable for at least 90°C (194°F).
• Risk of shock: this pump has not been tested for use in swimming pools or marine areas.
• To reduce risk of electric shock: Unplug before servicing, see instructions for proper installation, connect to a properly grounded, grounding type receptacle only.
• For indoor use only.
• Use copper conductors only.
• Do not install with motor above or below pump body.
• Do no submerge.
• Do not run pump dry.

These installation and operating instructions are applicable to the following Astro 2 models.

ASTRO 2 MODELS

MODEL	ELECTRICAL INPUT	RATING
ASTRO 210CI	115V, 60HZSingle phase	200W, 1.72A
ASTRO 210SS 200W, 1.72A
ASTRO 220SSU 33W, 0.29A
ASTRO 225SSU 83W, 0.69A
ASTRO 225BS 1/2 " SWT		75W, 0.64A
ASTRO 225BS 3/4 " 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 280SS		218W, 1.9A
ASTRO 290CI		218W, 1.9A
ASTRO 290SS		218W, 1.9A
ASTRO 280CI 230V	230V, 60HZSingle phase	210W, 0.9A
ASTRO 280SS 230V		210W, 0.9A
ASTRO 286CI		370W, 1.6A
ASTRO 286SS		370W, 1.6A

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 2 circulators are designed for closed hydronic or potable water systems. Their intended use is for circulating water or glycol solutions. For pumping domestic water use non-ferrous lead free bronze or stainless steel body pump construction.

The Astro 2 operates extremely quietly and is lubricated by the system liquid being pumped by the circulator.

These circulators except Astro 286 are designed to work at temperatures and pressures up to 230° F ( 110° C) and 150 psi. Astro 286 is designed to work at temperature and pressure up to 150° F ( 65° C) and 150 psi. For fluid temperature up to 185° F ( 85° C), operating current must not exceed 1.35A. For lead free 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/ 65° C) to avoid precipitation 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 efficient operation.

See installation examples.

CORRECT INSTALLATIONS

INCORRECT INSTALLATIONS

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 beside 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 retightening 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.

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.

1 Electrical installation should be conducted by a qualified electrician.

2 Always make sure electric power is disconnected before wiring the circulator.

The motor is designed for 60 Hz, 1 phase, 115 or 230 volt power.

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

To wire, loosen the screws from the terminal box cover and remove the screws and cover.

Install contractor choice of strain relief into 1/2 " NPT threaded access kit (not provided).

Insert wires through the strain relief connector and into the terminal box.

Strip 3/16 " of insulation from the ends of the three wires to be connected.

To insert the wires into the terminal strip, press down firmly on the terminal lever. 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 seal 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.

Speed setting of Astro 2 3-speed circulators:

(Not applicable for Astro 286)

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.

CAUTION

This Circulator Has Been Evaluated for Use With Water Only and Water/ Glycol Mixture (Ethylene, Propylene only)

WARNING

Never operate the circulator dry as permanent damage may occur. Never shut off 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

1 Place a container under the back of the circulator to catch any water that may run out.
2 Be sure power to the circulator is off at the fuse or circuit breaker.
3 Loosen plug on the back of the motor but do not remove.
4 Continue until water appears.
5 After a sufficient amount of water free of air bubbles has passed, retighten the plug.
6 The circulator can now be started.

LIQUID TEMPERATURE MINIMUM INLET PRESSURE
150°F (65°C)	3.0 ft (0.91 m)
167°F (75°C)	4.4 ft (1.34 m)
194°F (90°C)	9.2 ft (2.8 m)
230°F (110°C)	36.1 ft (11.0 m)

5.0 INSTALLATION TROUBLESHOOTING GUIDE

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 giving off any heat	The thermostatic valve is jammed or blocked.	Shut off 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 original 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 distribution of the flow.
Pump generates little or no output	Incorrect discharge direction.	Turn pump 180°
	Dirty impeller	Open pump and clean impellerNOTE: Close isolation valves if present
	Suction port blocked	Open pump and clean housingNOTE: 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 off 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.
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, thermostatic 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.

6.0 SPARE PARTS

SPARE PART ITEM	NO. APPLICABLE MODELS
Check valve 1"	810223-104	Astro 220ssu, Astro 225ssu
Check valve 1 1/4 "	810223-105	Astro 210, Astro 230, Astro 250, Astro 280, Astro 286

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