SPACE-RAY SWH-EC LPHW Warm Air Heater Instruction Manual

Instruction Manual for SPACE-RAY models including: SWH-EC MK2, SWH-EC LPHW Warm Air Heater, LPHW Warm Air Heater, Warm Air Heater, Air Heater

File Info : application/pdf, 9 Pages, 1.25MB

Spaceray-SWH-EC-mk2-Manual-Feb-25

®
INSTALLATION MANUAL
LPHW Warm Air Heater
Model SWH-EC (MK2)

Content

1. General

1.1 Description

1.2 Function

1.3 Matching capacity of hot water boiler and SWH

1.4 Guarantee

2. Technical

2.1 Technical data

2.2 Dimensions

2.3 Operating parameters

2.4 Pre-check

3. Installation

3.1 Suspension

3.2 Water connections

4. Electrical connection

4.1 230Vac Supply

4.2 General functioning of the unit

4.3 Connecting options

4.3.1 Variants

4.3.2 Combinations with a stepless controller.

4.3.3 Connection with room thermostat only

4.3.4 Connecting with contact thermostat

4.3.5 Connection with room thermostat combined with contact thermostat

5. Maintenance and operation

5.1 Maintenance

5.2 Safe operation

5.3 Frost damage

6. Water temperatures/air volumes

6.1 Other water temperatures

6.2.1 Example

The meaning of the symbol on the material, its accessory or packaging indicates that this product shall not be treated as regular waste. Please, dispose of this equipment at your applicable collection point for the recycling of electrical and electronic equipments waste. In the European Union and Other European countries which there are separate collection systems for used electrical and electronic product. By ensuring the correct disposal of this product, you will help prevent potentially hazardous to the environment and to human health, which could otherwise be caused by unsuitable waste handling of this product. The recycling of materials will help conserve natural resources. Please do not therefore dispose of your old electrical and electronic equipment with your regular waste.

1. General This user's guide is meant for the installer and if necessary for the user. It's a reference to operation and installation of the SWH-EC heater.
1.1. Description The SWH-EC is an effective in-direct fired heater. The heat exchanger consist of copper tubes and aluminium fins. This is an approved design for an optimal heat exchange.
The grille has been designed to accomplish an optimal air displacement at the lowest possible sound level.
With a 5-stage switch is it possible to reduce the air output and noise level.
1.2. Function The SWH-EC is essentially a radiator with a fan on the back. When hot water is pumped through the radiator, and the supply air fan is on, the heater will blow hot air. The heater will give no heat when the supply air fan is off, irrespective if there is hot water running through the radiator.
The heater requires a control (thermostat) to operate the supply of hot water and to switch the supply air fan on/ off.
There are several options for control, this will be described later in this manual.

For a good air distribution it's always better to choose 2 or more heaters instead of a single heater. For example, it's better to select two 30kW heaters, instead of one 60kW heater.
1.3. Matching capacity of hot water boiler and SWH-EC In case the capacity of the boiler is higher than that of the SWH-EC, the boiler won't be able to release all the heat produced.
This will cause the boiler to go on and off. As a consequence of this the installation won't be able to reach the temperature demanded. For small installations it is advisable to select a SWH-EC which has an higher output than the boiler itself.
1.4 Guarantee Operation and /or installation of appliances not in accordance with this manual will invalidate guarantee.
2 Technical 2.1 Technical data The SWH-EC is available in 9 models with capacities from 11.7 to 76.8kW. The range of nine models is subdivided into 3 basic sizes.
See table2, for dimensions

SPECIFICATION GUIDE - SWH-EC Series

Model

SWH115-EC SWH120-EC SWH235-EC SWH245-EC SWH350-EC SWH365-EC SWH380-EC

Maximum heat output*

Air volume

m3/h

Throw

Horizontal m Vertical m

Electrical supply

Rated power

14.7 2200
16 5
111

19.5 1950
14 5
123

27.8

38.7

46.4

3900

3500

6150

230V 1 Phase N & E - 50Hz

200

250

320

54.4 8500
25 8
400

76.8 7600
21 7
308

Electrical current Sound level @ 5m

A dB(A)

1.0 35-54

1.1 35-54

0.9 35-59

1.1 35-57

1.5 35-60

1.8 35-56

1.4 35-54

Weight (incl water)

Water connection

¾"

Water coil pressure drop

kPa

Minimum suspension height

2.5

* Based upon water flow and return temperature of 90/70OC and air temperature of 15OC Table 1 - Technical data

2.2 Dimensions Side View

Top View

Front View

Type

110 115 120 230 235 245 350 365 380

230 235Table2425 350 365 380

Type
DIMENSIONAL DATA - SWH Series

110 115 120 230 235 245 350 365

Model

SWH115-EC SWH120-EC SWH235-EC SWH245-EC SWH350-EC SWH365-EC SWH380-EC

510.5

692.5

863.5

509

693

864

46.5

435.5

585

756

435

585

756

¾"

91.75

72.75

93.5

82.75

107.25

93.75

327

346

504.5

515.5

652

666.5

91.75

94.5

94.25

104.25

103.25

320

363

357.5

66.8

86.5

43.5

45.5

54.5

76.5

160

101

254.5

346.5

432

160

181

158

2.3. Operating Parameters Working pressure: Max. 5 bar Water temp: Max. 100C; Min. 4C (risk of freezing) Ambient temp: Max. 40C; Min. 4C (risk of freezing) Protection grade: IP00B
NOotTeE: Frost can cause the internal copper tubes in the coil to burst and subsequently to leak.. This is not covered by warranty.
2.4. Pre-check Before installing the heater, please check the heater supplied is the same as ordered, and ensure it suits the application, supplies available (electrical, water etc.) along with any local or national regulations.
After installation ensure that the appliance is safe and is not a hazard for personnel and cannot cause, or be, damage(d) by the contents within the space i.e moisture, dust, inflammable or corrosive gases, smoke and/or combustible materials.

The competent installer must make sure that the heater functions correctly and must instruct the user about safe operation of the heater. 3. Installation 3.1 Suspension The SWH-EC is provided with 10 No M10 suspension points on the side panels.
It is recommended that the specially designed cantilever brackets or the ceiling mounting-set are used when mounting the heater.
Ensure that the heater is placed in a stable position, and that there is no tension on the water side connections.
Wall installation: The pipe connections for water should always be horizontal, to enable a drain/venting point to be fitted. The heater can be tilted forward slightly, but the heater may NOT hang askew.
Place the heater in such a manner that the return

connection (cold water) is at the lowest point. It is important to place the drain/venting point in the pipework near the heater.
Ceiling installation: Again the pipe connections to the heater should be horizontal, to enable drain/venting of the internal tubes.

Do not over tighten the pipework on the heater connections, this will result in leaks!
WAarRnNinINg:G! To prevent damage to the heater, hold the water connections with a wrench to avoid twisting the welded parts of the connections.

To avoid draughts place the heater high enough (minimum 2.5m). If necessary use our 4-way downflow plenum, use of a plenum will reduce the throw by a factor of 4. See Fig. 1.

Do not apply excessive force! Internal welds may break and cause leaks.

Min 194mm

4. Electrical connection 4.1 230Vac supply
The installation must comply with all applicable local and/or national standards.

There should be a suitable mains electrical isolator with a main fuse.

There is an electrical diagram further on in this guide. The supply is 230Vac (50 Hz) with earth.

Fig. 1
The discharge grille, 4-sided discharge plenum and the vertical louvres are easy to adjust to the desired airflow direction.

Isolation switch or power plug The heater must be equipped with a 230V isolation switch or power plug. This switch should disconnect liveand neutral (not earth) and have a minimum 3mm contact opening. Switches or power plugs must be accessible at all times.

Fig. 2
Make sure that the exchanger is not damaged and that the heater discharge is not blocked, and the supply air fan has no restrictions. Make sure that there's sufficient circulation of air within the space without the airstream being considered a draught.

4.2 General functioning of the unit The SWH-EC is simply described as a radiator with a fan at the rear. If there is hot water flowing through the radiator, and the heater is on, the heater will blow warm air. But when hot water is flowing through the radiator and the heater is off, the heater will not discharge warm
air.
If the fan is turned on, but the water supply is cold, then ambient air will leave the heater, possibly causing draughts. This should be prevented.

Heaters fixed to the wall should always blow in the direction of the cooler areas.
3.2 Water connections Connections for hot water supply and return (2 x ¾" or 2 x 1") are marked with a red and a blue sticker. Red is water supply and blue is water return. Do not swap these connections,as this will affect the heat output.
The SWH-EC is not provided with a vent/drain . This should be fitted as part of the pipework installation and should be as close to the heater connections as possible.

The installation should have some form of control to make turning on/off the hot water boiler and the fan of the SWH-EC separately, possible. The SWH-EC and the boiler are 2 separate systems. Both systems need to be controlled.
There are several ways to do this. This is dependant upon the application and needs of the user.
4.3 Connecting options 4.3.1 Variants The SWH-EC has two motor connection versions.

VeDersWiWoHnme1t E,Cmmootorthoeerftwenkietlehvairinantteenr. nal connection terminals
Variant 1, motor met interne aansluit klemmen

EC Motor

N L1

24V 10V GND D1 E1

Connector
L1
230V AC
N

GND (0V)

10V (OUT)

0-10V ( IN )

3. Externally controlled with 0-10V

Between terminals [GND] and [E1] in the motor, or

GND[T1] and 0-10V IN[S3] on the 6-pin connector,

an external voltage c-an be set between 0 and 10V to con-

trol fan speed.

Multiple SWH-EC's on one controller (max of 8 units) The supply voltage of 10V[T2] may only be used from one SWH-EC, no other's should not be connected.

VVearriasnito2n, m2ot,orwzointdheroauantsltueitkrlemmminena:ls
EC Motor

E1 10V GND

Connector
L1

Variant 2, motor zonder aansluitklemmen:
N

230V AC

GND (0V)

10V (OUT)

0-10V ( IN )

4.3.2 Combinations with a stepless controller. An optional stepless controller can be used to reduce the noise level of the appliance. This controls the fan speed of the SWH-EC, remember, lower fan speed equals lower heat output of the unit.

There are th-ree options for the speed setting:

1. Only maximum speed (factory setting)

2. With a speed controller

3. External via 0-10V

1. Maximum speed only (factory setting): This can be done with a wire- link on the motor between [10V] and [E1] or between [T2] and [S3] on the 6-pole connector. As a result, the fan will always run at maximum speed. This is already fitted as standard.
L1
230V AC
N

L1
230V AC N

GND (0V)

0-10V ( IN )

SWWWWCHUH33-EC 4

L1
230V AC N

GND (0V)

0-10V ( IN )

SWWWHWC-UHEC22 2

L1
230V AC N

GND (0V)

10V (OUT)

0-10V ( IN )

SWWWHWC-HUE1C 1

Speed regulator 10k

4.3.3 Connection with room thermostat only This option is only possible when there is a continuous hot water supply. The hot water boiler should have its own control.
Operation: The on/off room thermostat will operate the fan of the SWH-EC when there is a demand for heat. The fan will blow air over the heat exchanger, if the water is hot the heater will discharge warm air. If the water is cold the heater will blow ambient air, this can be experienced as a draught.

The boiler must be switched on/off separately. Therefore a second room thermostat is required.

N
-
T1
T2
S3

230V AC GND (0V)

CCoonnneeccttoorr

GA3961 10V (OUT)
0-10V (IN)

GND (0V)

10V (OUT)

0-10V ( IN )

Connector

2. With a speed controller (potentiometer) Connect o terminals [10V] [GND] and [E1] in the motor or to GND[T1], 10V[T2] and 0-10V IN[S3] on the 6-pole connector a 3-wire speed controller GA3955, or another potentiometer can be connected.

-
NoOtTeE The potentiome- ter has a resistance value of 10k.

L1
230V AC
N

GND (0V)

10V (OUT)

0-10V ( IN )

CCoonnnneecctotor r

Speed regulator 10k

4.3.4 Connecting with contact thermostat. This control can be used if the thermostat of the boiler is in the same room as the SWH-EC.
Operation: The contact thermostat will close if the water has reached the pre-set temperature. In this scenario the SWH-EC will only discharge warm air. The boiler thermostat will s-witch on-the boiler. The boiler will pump hot water around the system with the contact thermostat of the SWH-EC closing if the water is hot enough. The fan will blow warm air into the space.
If the boiler is shut off by the boiler thermostat, the water will cool down and the contact thermostat will open (disconnect) causing the SWH-EC fan to stop.

5. Maintenance and operation

IHIH58850000

Caution!: Make sure that you have turned off the power supply to the heater you are working on. The heater must be earthed.

Connector
4.3.5 Connection with room thermostat combined with contact thermostat This option is applicable when the boiler is controlled by its own thermostat and there is a continuous hot water supply.
Operation: The on/off thermostat will operate when there is a demand for heat. The contact thermostat will not close until the water has reached a pre-set temperature. In this scenario, the fan of the SWH-EC will blow warm air and will prevent draughts.
The boiler must be turned on and off separately.

L1
230V AC
N

GND (0V)

CCoonnnneecctotorr

GGAA33996611 IIHH58850000
10V (OUT) 0-10V (IN)

If speed controller is also used, follow below wiring.

Speed Controller

5.1 Maintenance Especially in dusty spaces, it is important to clean the heater regularly. If the heat exchanger is heavily covered by dust, it will not displace the heat sufficiently. Use a vacuum cleaner or compressed air taking care to avoidvoid damaging the heat exchanger fins. Clean also the fan, guard and air outlet grille.
5.2 Safe operation The heater is controlled by the room thermostat and/or the 5 speed switch if there is one present. There are no controls on the heater itself. Depending on the installation, the user can make following settings:
· Control main or isolation switch · Turn up and down room thermostat · Turn up and down contact thermostat · Change fan speed with 5-stage switch
Adjusting direction of the air outlets is not normally a user action, this is done by the installer.
5.3 Frost damage ATTENTION!: Frost damage! Do not set the room thermostat lower than 5°C. Freezing of the exchanger or the tubes, will cause irreparable damage to the heater. A constant supply of hot water from the boiler must be ensured. Frost damage will void warranty claims!
6. Water temperatures/ air volumes The technical data table (table 1) shows heater capacities (KW) with supplied hot water temperature of 90/70°C.

Connector

IH8500

GA3961

6.1 Other water temperatures
In applications where the water flow and return temperatures are not 90/70°C, the heat output from the SWHEC will be reduced.

To calculate the heat output at different water temperatures, please refer to table 3. Select the water temperature along with the air temperature at the fan inlet.

Where these intersect on the table, this figure is multiplied by the given heat output in table 2, the resultant figure is the new heat output of the appliance at the new flow and return water temperatures.

The SWH-EC is not suitable for steam applications.

Water

Temperature

0OC

Air Temperature

5OC

10OC

15OC

18OC

20OC

90/70OC

1.30

1.19

1.10

1.00

0.94

0.91

80/60OC

1.11

1.01

0.91

0.82

0.76

0.73

70/50OC

0.92

0.82

0.73

0.64

0.56

0.55

60/40OC

0.73

0.64

0.54

0.45

0.40

0.37

50/30OC

0.54

0.45

0.37

0.27

0.22

0.18

Table 3

6.2 Example What is the capacity of a SWH235 at a water temperature of 80/60OC degrees in a room with an ambient temperature of 10OC?
Table 1 in section 2, shows the capacity of the SWH235 at 90/70OC and 15OC ambient room temperature. This is 27.7 kW.

SPECIFICATION GUIDE - SWH-EC Series

Model

SWH115-EC SWH120-EC SWH235-EC SWH245-EC SWH350-EC SWH365-EC SWH380-EC

Maximum heat output*

kW 14.7

19.5

27.8

38.7

46.4

54.4

76.8

Air volume

m3/h 2200

1950

3900

3500

6150

8500

7600

Throw

Horizontal m

Vertical m

Electrical supply

230V 1 Phase N & E - 50Hz

Rated power

111

123

200

250

320

400

308

Electrical current

1.0

1.1

0.9

1.1

1.5

1.8

1.4

Sound level @ 5m

dB(A) 35-54

35-54

35-59

35-57

35-60

35-56

35-54

Weight (incl water)

Water connection

¾"

Water coil pressure drop

kPa

Minimum suspension height

2.5

With a water temperature of 80/60OC and 10OC ambient room temperature, the conversion factor is, according to table 3 above.

Water

Temperature

0OC

Air Temperature

5OC

10OC

15OC

18OC

20OC

90/70OC

1.30

1.19

1.10

1.00

0.94

0.91

80/60OC

1.11

1.01

0.91

0.82

0.76

0.73

70/50OC

0.92

0.82

0.73

0.64

0.56

0.55

60/40OC

0.73

0.64

0.54

0.45

0.40

0.37

50/30OC

0.54

0.45

0.37

0.27

0.22

0.18

So the heat output output will be 0.91 x 27.8kW = 25.3kW

®
Gas Fired Products (UK) Ltd Chapel Lane
Claydon, Ipswich Suffolk, IP6 0JL
Tel: +44(0)1473 830 551 www.spaceray.co.uk info@spaceray.co.uk
FACTORIES: IPSWICH, ENGLAND - CHARLOTTE, N.C, U.S.A
SWH-EC MK2 Manual Feb 25

References

Space-Ray Heating Solutions - Space-Ray

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