Reznor Euro-T 2025D, Euro-T 2045D, Euro-T 2030D, Euro-T 2035D, Euro-T 2055D Installation Commisioning Servicing & User Instructions

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0505T2DOGBEN

GAS FIRED AIR HEATERS TYPE EURO-T 2000 D

Forced Convection Duct Appliances with

Automatic Ignition and Fanned Flues for use as: Type B22 - C12 - C32

INSTALLATION COMMISSIONING SERVICING

& USER INSTRUCTIONS

These appliances meet the following EC Directives:

Dir. CE 90/396/EEC: GAD Dir. CE 89/336/EEC: EMC Dir. CE 73/23/EEC: LVD

PLEASE READ THIS DOCUMENT CAREFULLY BEFORE COMMENCING INSTALLATION AND LEAVE IT WITH THE

USER OR ATTACHED TO THE APPLIANCE OR GAS SERVICE METER AFTER INSTALLATION.

INDEX

Page

1. General ............................................................................................................................................................................... 2

2. Technical data .................................................................................................................................................................... 3

3. Installing.............................................................................................................................................................................. 6

4. Combustion, Air supply and flue system ............................................................................................................................. 9

5. Gas connection................................................................................................................................................................. 11

6. Electrical connection ......................................................................................................................................................... 11

7. Commissioning, lighting and operation ............................................................................................................................. 12

8. Maintenance ..................................................................................................................................................................... 13

9. Fault finding ...................................................................................................................................................................... 16

10. Spare parts list.................................................................................................................................................................. 17

11. Gas conversion................................................................................................................................................................. 18

12. Health and Safety Statement ............................................................................................................................................ 19

13. User instructions ............................................................................................................................................................... 20

If optional equipment was ordered and supplied with this air heater, please refer to additional instructions for option(s).

SECTION 1. GENERAL

1.1 Before installation, check that the appliance as described on the packaging label is in accordance with the correct type and model as specified on the data plate and complies with your customer order.

1.2 After unpacking the appliance, leave it fastened to the wooden pallet until it has been suspended or until just before base mounting. This affords protection to the painted underside which is normally exposed to view after installation.

1.3 Please read this document before commencing installation.

1.4 These instructions are only valid for the country of use indicated on the appliance i.e.: GB - IE. If these symbols are not shown, it is necessary to obtain appropriate technical instructions which will provide information concerning the necessary modification of the appliance for the conditions of use in the country concerned. Such instructions may be obtained upon request from your supplier.

1.5 Check that the local distribution conditions of electricity supply, type of gas and pressure, and adjustment of the appliance are compatible.

1.6 When installed in Great Britain the total installation must comply with the requirements and recommendations of British Standard BS 6230

1991. "Installation of Gas Fired Forced Convection Air Heaters for Commercial and Industrial Space Heating". The Installation must also be in accordance with the relevant requirements of "The Gas Safety (Installation and Use regulations) and (Amendment Regulations

1990)" and The "Building" and "Electrical Regulations" (in GB the IEE Regulations). The requirements of the "Local Building Standards Office", the premises "Insurance" undertaking and the"Fire Office" must also be observed.

1.7 Unauthorized modification of this appliance or departure from use in the manner for which it was intended by the manufacturer or installation in a manner contrary to these instructions, may constitute a hazard and jeopardize all warranties. Deviations should only be carried out after formal consent has been obtained from the manufacturer.

1.8 Ensure the environment in which the air heater will be installed will not create a hazard i.e. where excessive (volatile) dust, flammable or corrosive substances and/or vapors and combustible materials may be present.

1.9 This appliance has been tested, and set according to the data plate before leaving the factory.

1.10 These air heaters may be used as a gas fired heating module in an air handling appliance or in conjunction with a cooling packaged appliance. When applied in such manner the installation instructions contained in this document must be complied with as appropriate. The fitting within another housing must take into account the gas fired appliance requirements of the appropriate CE standard, EN 1020 " Non-domestic gas-fired forced convection air heaters for space heating incorporating a fan to assist transportation of combustion air and/or flue gases" PrEN 1020 is in course of preparation and may be applied until the final document is published,

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(anticipated 1996)

1.11 The criteria recommended in this document regarding airflow pressures, temperature rise, firing rates and

fitting methods must be strictly complied with, wether or not the appliance is used as a duct heater or as part of an multi-functional appliance, to ensure satisfactory operation.

SECTION 2. TECHNICAL DATA

Table 1. Appliance Data Standard Efficiency Models

EURO-T Standard Model #

EURO-T Low NOx #

Gas category 'Cat.'

Air supply and flue type

Heat input (Hs) 'Qn'

Heat input (Hi) 'Qn'

High heat output

Number of jets

Jet size

Gas supply pressure 'P'1

Burner pressure 2

Gas consumption

Gas service connection (not supply line size)

Electrical supply

Electrical rating

Protection grade

Appliance weight net

Appliance weight gross (shipping)

natural gas

propane/butane

natural gas

propane

butane

natural gas

natural gas 3

propane

butane

1 Maximum gas pressure at inlet to appliance = 50,0 mbar 2 All casing panels fitted, service door open 3 Natural gas G20, caloric heating value 10,5 kWh/m

Propane G31, caloric heating value 12,88 kWh/kg Butane G30, caloric heating value 12,66 kWh/kg

4 Total electrical rating during the start-up period " 30 seconds is increased by 130 W and is not included on the appliance

data plate or in the above table

i mm

mbar

m3/h

kg/h

" kg

2025D 2030D 2035D 2045D 2055D 2075D 2095D

2525D 2530D 2535D 2545D 2555D 2575D 2595D

28,8

26,0

22,8

2.70

2.06

2.10

on Hs @ 15EC & 1013 mbar

35,2

31,7

27,8

2.4

1.35

3.36

2.52

2.60

42,7

38,5

33,7

2.2

1.25

(GB) = 17.5 (IE) = 20.0

4.10

3.05

3.12

230/240V 1 N - 50Hz

2H3

B22 - C12 - C32

49,9

45,0

39,4

37.0

28.0

8.50

4.76

3.56

3.64

Rc :

180 W

IP20

109

63,2

57,0

49,9

6.10

4.51

4.61

115

126

2.4

1.35

86,5

78,0

68,3

8.30

6.18

6.31

139

152

115,4

104,0

91,0

11.00

8.25

8.42

171

187

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Table 2 Appliance Data Higher Efficiency Models

EURO-T Standard Model #

EURO-T Low NO

High fire heat output

Note: All other data as standard model

Model #

kW 23.7 28.9 35.1 41.0 51.9 71.0 94.7

2026D 2031D 2036D 2046D 2056D 2076D 2096D

2526D 2531D 2536D 2546D 2556D 2576D 2596D

Table 3 Minimum air volumes for maximum temperature rise. Standard Appliance

Standard model Euro-T...

High efficiency model Euro-T...

Minimum air volume

Maximum temperature rise _T

2025D 2030D 2035D 2045D 2055D 2075D 2095D

2026D 2031D 2036D 2046D 2056D 2076D 2096D

1800

2200

2660

3110

Table 4 Minimum air flows for maximum temperature rise. Low NO

Maximum air volume

Maximum temperature rise _T

N.B. The maximum static pressure that may be applied to the Euto-T...D series is 800 Pa

Standard model Euro-T...

High efficiency model Euro-T...

Figure 1 Pressure loss for air flow passing

2525D 2530D 23535D 2545D 2555D 2575D 2595D

2526D 2531D 2536D 2546D 2556D 2576D 2596D

2080

2540

Figure 2. Combustion circuit Dew-point occurrence

3080

Models

3600

4555

Euro-T... D series air heaters

3940

5400

6240

7190

8300

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Figure 3. DIMENSIONS

As standard Left hand side (controls side) Front

Gas, electrical & controls connections location

Top plan Rear

Table 5 Dimensions reference figure 3

Model

Dimensions

A1 Width overall

i Flue & combustion air intake socket internal i

X Flue & combustion air intake socket centres

Y Duct flange width front and back

2..25

2..26

520

360

2..30

2..31

590

102

140

620

2..35

2..36

730

570

2..45

2..46

2..55

2..56

870 1080 1360

710

2..75

2..76

132

225

920 1200

2..95

2..96

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SECTION 3 INSTALLING

3.1 When installed as an in-line duct heater i.e. not fitted within an air handling appliance cabinet it is necessary to ensure that clearance is maintained around the appliance from combustible materials and for service access. The clearances necessary to ensure safety for combustibles is 150 mm on all sides. Service access should be allowed on the controls side of the appliance equal to the width of the air heater plus 200 mm, this distance allows for the removal of the burner tray assembly, necessary en servicing the appliance.

3.2 Ensure that the structural elements which will be used to suspend or support the appliance, are adequate to carry the weight of the appliance and its ancillary components i.e. flue system and any connected duct-work.

3.3 Ensure that the air heater is installed in a level plain.

3.4 If the air heater is to be base mounted in an open position then it must be secured to supporting devices.

3.5 4 suspension brackets with holes φ 10.5 mm are available as optional accessories. Use 10 mm i rods for suspending the heater when using the Reznor options.

3.6 If the appliance is to be suspended or base mounted from cantilever brackets, specially designed wall brackets should be manufactured to suit the application respecting the clearances indicated in 3.1 above and the live load factors the appliance will impose.

3.7 After suspension, the air heater should be rigid so as to avoid placing a strain on the flue system, gas services electrical wiring and duct-work.

3.8 Euro-T.. Series D air heaters, wether or not they are installed within an air handling appliance may be installed in multiple form as illustrated in figure 4. In all instances the air flow passed through the appliance/s should not exceed the volumes required to ensure that dew point conditions within the combustion circuits/s as indicated in figure 3 do not occur.

By-passes should be constructed as necessary to ensure that the optimum temperature rises are met taking into account the pressure resistance of the air heater as indicated in figure 2.

When designing by-pass ducts ensure that the requirements for service access, flue and controls connections are maintained. An adjustable damper should be included within by-pass ducts to enable air flow pressure and volume to be adjusted after installation.

When fitting Euro-T.. air heaters in a side by side configuration it is necessary to specify this requirement when ordering type D models. Whilst the air may be passed through the appliance from either end, provision for locating the thermal over-heat (limit) control device has to be made so that the air off side (the hottest side) is monitored for this purpose.

3.8 Figure 5. illustrates the recommended principle that should be used for the connection of ducts or air handling appliance element transitions. A positive seal must be maintained between the air circuit and the air heater, this is particularly important when the air heater is installed within an air handling cabinet. A neutral pressure zone around the appliance must be maintained to ensure that the atmospheric burner operates at all times at normal ambient pressure.

3.9 Figure 6 illustrates some of the situations to be avoided when connecting an air handler to the appliance. A rule of connecting a straight length of duct equal to 3 times an equivalent duct diameter onto the appliance should be maintained whenever possible. It is essential that an even air flow is distributed across the heat exchanger to ensure that the heat is scrubbed from all the exchanger elements thus preventing hot spots which will greatly reduce the working life of the air heater.

Always avoid installing a centrifugal fan so that the swirl effect created by the direction of rotation is counter directive. As well as the effect of uneven air flows, excessive loss of static pressure is created resulting in inefficiency of the fan.

Where it is necessary to connect a transition section as part of the connection then the degree of taper in any plain should not be greater than 15E. Abrupt transitions create excessive pressure drops and lead to uneven air distribution across the air heater.

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Figure 4. Arrangements for applying multi-heater combinations

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