Operation and Maintenance Instructions

Unit Heaters LH

(Translation of the original)

Wolf GmbH • Postfach 1380 • 84048 Mainburg • Tel. 08751/74-0 • Fax 08751/741600 • Internet: www.wolf-heiztechnik.de Part no.: 3063445_201308 Subject to modifications

GB

Index Index

General........................................................................................................................ 3 Symbols....................................................................................................................... 3 Safety instructions....................................................................................................... 4 Standards and regulations.......................................................................................... 4 Unit description............................................................................................................ 4 Installation and operation instructions......................................................................... 5 Prior to the installation............................................................................................ 6 - 7 Installation instructions......................................................................................... 8 - 10 Electrical connection..................................................................................................11 Switches............................................................................................................. 12 - 14 Control devices for damper actuators....................................................................... 15 Thermostats.............................................................................................................. 16 Control system WRS............................................................................................ 17-20 Actuators................................................................................................................... 21 Push-button............................................................................................................... 21 Intermediate terminal box.......................................................................................... 22 Maintenance.............................................................................................................. 23 Frost protection......................................................................................................... 23 Hydraulic adaption of unit heaters within a group..................................................... 24 Rain protection hood and roof lead-in box.......................................................... 25- 26 Notes......................................................................................................................... 27

2

3063445_201308

General / Symbols General

The present operation and maintenance instructions are exclusively applicable for Wolf unit heaters LH. Read these instructions carefully prior to the installation. These instructions, as a part of the unit, have to be kept accessible. No warranty claims will be accepted if operation and maintenance instructions are not adhered to.

Symbols

The following symbols are used in these instructions. These important instructions concern personal safety, as well as technical reliability. "Safety instructions" are instructions with which you must comply exactly, to prevent injury and material losses. Danger through "live" electrical components. Never touch electrical components or contacts when the ON/OFF switch is in the ON position. This creates a risk of electrocution, which may cause injury or death.

Attention :

"Attention" indicates technical instructions which you must observe, to prevent material losses and unit malfunctions. In addition to the operation and maintenance instructions there are as well stick-on labels on the unit, which have to be adhered to in the same manner.

3063445_201308

3

Safety Instructions / Standards, Regulations / Unit Description Safety instructions

Installation, commissioning, service and operation may only be carried out by qualified personnel. For electrical installations VDE regulations and local guidelines have to be adhered to. The unit may only be operated within the capacity range indicated in the technical documents of Messrs. Wolf. The unit may only be applied for purposes of ventilation. It is ony suitable for air. The air must not contain any hazardous, combustible, explosive, aggressive, corrosion developing or any other dangerous substances. The unit may only be operated in technically perfect condition. Any malfunction or damage which may influence the safety or perfect function of the unit have to be eliminated by a recognized specialist, at once. Damaged unit components may only be replaced by original Wolf - spare parts. Only qualified electricians are allowed to perform work on electrical appliances or components, adhering to the electric regulations. It is not allowed to work in the direct vicinity of a running fan. There is a risk of being hurt by the running fan. Before undertaking maintenance work, always ensure that the system main isolator / the repair switch(es) are OFF and locked to prevent unintentional reactivation.

Standards, Regulations

The following standards and regulations apply to the LH unit heaters: - Machine directive 2006/42/EU - Low voltage directive 2006/95/EU - EMC directive 2004/108/EU - DIN EN 12100

Safety of machines; general design principles

- DIN EN 13857

Safety of machines; safety distances

- DIN EN 349

Safety of machines; minimum distances

- DIN EN 953

Safety of machines; guards

- DIN EN 60204-1

Safety of machines; electric equipment

For the installation and maintenance, the following regulations and safety instructions have to be adhered to:

General unit description and design

4

- DIN VDE 0100

Requirements for high voltage installations up to 1000 V

- DIN VDE 0105

Operation of high voltage installations, general restrictions

- DIN VDE 0701-0702

Repair, modification and testing of electrical appliances

Wolf unit heaters consist of a zinc plated sheet steel casing. The casing is composed of a self-supporting pentapost profile construction, which is welded and zinc plated, and of zinc plated lateral casing panels. The casing is provided with a LPHW-heating coil which consists either of copper tubes and aluminium fins or galvanized, finned steel tubes. The air inlet is provided with a unit consisting of an axial fan-motor-protection grille assembly which takes the air in via the air inlet in the rear panel. While passing the heat exchanger on the discharge side the air is heated. The warm airstream may be turned downwards via an adjustable discharge louvre. 3063445_201308

Installation and Operation Instructions Heat exchanger

When connecting the heat exchanger counterhold with pipe-wrench. The flow of the heating system has to be connected on the air discharge side of the heat exchanger. For steam: Steam connection on top Condensate return on bottom of discharge side Connections on left hand side only, in direction of air flow Attention:

Evacuation of air and fluid has to be provided on site! Operation limits for LPHW/MPHW: Heat exchanger Co./Al., type 1, 2, 3, 4, NP 16, up to 140°C (threaded sleeves) Heat exchanger steel-galvanized, NP 10, up to 140°C (threaded sleeves) Heat exchanger steel-galvanized, NP 10, up to 180°C (welded flanges) Operation limits for steam: Heat exchanger Co./Al., type D, up to 9 bar saturated steam Heat exchanger Co./Al., upt to 9 bar saturated steam

Electric heater

To avoid overheating, pay atenteion to the following minimum air volumes: LH

Attention:

25

40

63

100

Horizontal airflow

V min [m³/h]

800

1600

2500

4000

Vertical airflow

V min [m³/h]

1000

2200

3200

5000

Protective measures: In any case it has to be secured that the electric heater is switched off when the air volume is falling below the indicated minimum. Additionally, the electric heater may only be set into oberation by one or several magnetic swiches whose control circuit leads over the automatic overheating controllers wired in line. Pay attention to the fact that at least one automatic controller has to be mounted on top of the electric heater. In any case, protect against water

Ceiling-mounted unit

Attention:

(2) (1)

Motors

In ceiling-mounted units there may occur damages by overheating when motor is swiched off. For this reason the water inlet temperature has to be limited on: Motor for higher surrounding temp. (on request) 115°C when additional sections are 140°C when additional sections are mounted (1) mounted (2) 140°C without additional selections (2) 180°C without additional sections (2) When fan stops all control valves have to be closed automatically. The electric connenction has to be executed in accordance with the local regluations. After completion of the electric installation it has to be accordance with VDE 0701 part 1 and VDE 0700 part 500. Attention must be paid to the correct direction of rotation of the fan during commissioning. Observe the direction arrow on the rear wall of the device. LH-three-phase motors (except explosion proof motors) may either operate on low spped Y or on high speed ∆. The motor windings are designed accordingly. Motors for single-phase alternating current may only oberate on high or low speed depending on delivery. LH-single-phase and three-phase motors (except explosion proof motors) are protected with thermal cutours, which interrupt the control circuit of switch or step switch in case of overheating of the fan motor. When temperature decreases, the motor switches on automatically.

Attention:

The winding protection wirks only in case of switching the therminal cutouts to the control circuit of a switch of step switch. Using switches or speed controllers not delivered by Wolf, we can´t take any warranty!

3063445_201308

5

Prior to the Installation Clearances Clearances for LH ceiling unit or wall unit in metres LH to LH

LH to wall

7-9

3-4

40

9 - 11

3-5

63

11 - 13

4-6

100

13 - 15

5-7

Primary air

Secondary vortex

Primary air

Primary air

Spacing

Spacing

7 - 15 m

7 - 15 m

Spacing 3-7m

Larger throw for very high rooms by means of discharge cone

up to 2,5 m max.

larger throw by approx. 25%

25

Air throw

LH

Secondary vortex

Four-side discharge for lower rooms

Discharge accessories referring to a.m. spacing, a ∆t air (= t discharge - t room) of approx. 25K and high speed. LH

25

40

63

100

Spacing: Discharge/Floor up to 2,5 m

4-side-discharge 4-side-discharge 4-side-discharge 4-side-discharge

3-4 m

Wide spread discharge

Wide spread discharge

Wide spread discharge

Wide spread discharge

4-5 m

Cone

Cone

Louvre

Wide spread

5-6 m

Cone

Cone

Cone

Louvre

à partir de 6 m

Cone

Cone

Cone

Cone

If the temperature difference ∆t air exceeds 30K the above selection table is no longer applicable, because of the reduced penetration. 6

3063445_201308

Prior to the Installation Clearances

LH

Clearances for wall-mounted units and clearances for ceiling-mounted units, vanes vertical. Ceiling-mounted unit, vanes deflected.

Air throw: wall-mounted unit Air throw m 0,2 m/sec. Height above floor min. 2,5m max. 4,0m

Angle of adjustment

25

40

63

100

LH from LH LH to wall

7 - 9m 3 - 4m

9 - 11m 3 - 5m

11 - 13m 4 - 6m

13 - 15m 5 - 7m

LH from LH LH to wall

- 12m 4 - 6m

- 14m 5 - 7m

- 16m 6 - 8m

- 18m 7 - 9m

LH Type Air throw [m]* high speed low speed

1

2

25

3

4

1

2

40

3

4

1

2

63

3

4

100 2 3

1

4

19 18 16 15 27 26 23 21 29 27 25 23 36 35 34 32 16 15 13 12 20 19 16 14 22 20 18 17 30 28 26 25

* Figures represent air throws on defined operating conditions. (mixing temperature 10 K above room temperature)

Speed of air stream in utility area 0,2m/sec.

Height above floor, ceiling-mounted unit

LH

25 2

3

40 4

1

2

3

63 4

1

2

100

Type

1

3

4

1

2

3

4

Height above floor [m]*

5 4,5 4 3,5 6 5,5 5 4,5 7 6,5 6 5,5 8 7,5 7 6,5

Height above floor [m]

*The optimum vane angle depends on the height above floor. Angle of adjustment

Higher above floor heights on request.

Speed of air stream in utility area 0,2m/sec.

A

B

C

D

E

F

LH 63

1040

120

270

300

350

460

LH 100

1130

120

320

340

350

590

LH

63

100

Type

1

2

1

2

Max. height (m)

12

11

11

10

Higher above floor heights on request.

B

C

A

D

E

Height wall-mounted unit with adaption cone and induction louvre

F

3063445_201308

7

Installation Instructions Suspension angles

Attach the suspension angles to LH-unit. For mounting on the ceiling with horizontal air outlet, first fix screws Ø 8 mm (on site) to the ceiling. Hang up LH-unit at key holes and tighten screws. For sloping the LH-unit from the ceiling, insert threaded shaft (8 mm) from side through slot of key holes and tighten by nut, counter-nut and 2 washers. Depending on the construction of the ceiling, use appropriate screws and dowel pins, if necessary.

120

240

65

5

9

9

Threaded sheft

25

Suspension

Lmax

Fix screws Ø 8 mm to wall. Hang up LH-unit and suction accessory by means of key-holes and tighten screws. For wall- mounted units exceeding a max. length Lmax. provide an additional support or suspension on-site. LH 100 with steel-galvanized heat exchangers type 2 and 3 require this additional support or suspension already at a unit-length of L = Lmax.

Bracket

25

40

63

100

Lmax. [mm]

1100

1100

1100

1220

Support

Fit mounting brackets to LH-unit by means of enclosed screws. Attach screws to wall of ceiling according to measure "c". Hang up LH-unit by means of key holes of mounting brackets and tighten screws.

x

x

f

a c

x

x

h

e

Mounting brackets

LH

g

d

b

l

LH

a

b

c

d

e

f

g

h

i

25

480

250

380

70

30

170

155

155

434

40

480

250

2 x 170

90

50

2 x 170

70

70

564

63

784

350

170+340+170

72

32

3 x 170

137

137

734

100

784

350

170+340+170

72

32

3 x 170

137

137

894

Dimensions en [mm] 8

3063445_201308

Installation Instructions Prior to the application of fastening sets the static conditions of the concrete or steel bars have to be checked and taken into account. Assembly exclusively with basic units at a total depth of 300 mm.

Fastening kit for concrete bar vertical

- Fasten fixing rail with dowels and screws, provided on site, to the concrete bar. - Fit fastening brackets to the unit with enclosed screws. - Fit suspending rails to the fastening brackets with enclosed screws, washers and nuts. - Hang total assembly (unit fastening brackets and suspending rails) into fixing rail. To prevent the unit from dropping before fitting the pipework, the inferior suspending rail may be secured additionally by fitting it to the concrete bar with screws and dowels.

Suspending rail

Fastening bracket

Fixing rail

Fastening kit for steel bar vertical

Suspending rail

Fastening brackets

LH-Unit

Suitable for all types af steel bars at a flange width "b" of min. 100 mm up to max. 300 mm, and a flange thickness "t" of min. 6 mm up to max. 21 mm. - Fit fixing rail to steel bar with enclosed clamping jaws. - Fit fastening brackets to the unit with enclosed screws. - Fit suspending rails to the fastening brackets with enclosed screws, washers and nuts. - Hang total assembly (unit, fastening brackets and suspending rails) into fixing rail. - Fit inferior suspending rail to steel bar with clamping jaws.

Clamping jaws

Suspending rail

Fastening bracket

Suspending rail

b

Fixing rail

Fastening bracket

t 3063445_201308

9

Installation Instructions Fastening kit for steel bar inclined with inclination equalization

Suitable for all types of steel bars at a flange width "b" of min. 100 mm up to max. 300 mm and a flange thickness "t" of min. 6 mm up to max. 21 mm. - Fit fastening brackets to the unit with enclosed screws. - Fit angle steel profiles of inclination equalization with their short end to the suspending rails, by using the enclosed screws and nuts. - Connect angle steel profiles at their long ends and keep them movable. - Fit suspending rails to the steel bar with enclosed clamping jaws. - Fit unit to inclination equalization assembly via its fastening brackets by means of threaded rods M8 (on site).

b

Clamping jaws

Suspending rail t

Threaded rods M8 (on site) Fastening brackets

Inclination equalization

LH-Unit

Fastening kit for steel bar horizontal and inclined without inclination equalization

Suitable for all types of steel bars at a flange width "b" of min. 100 mm up to max. 300 mm and a flange thickness "t" of min. 6 mm up to max. 21 mm. - Fit fastening brackets to the unit with enclosed screws. - Fig. 1 and 2: - Fig. 3:

- -

Fit suspending rails to the fastening brackets with enclosed screws, washers and nuts. Fit suspending rails to the steel bar with enclosed clamping jaws, as shown in fig. 1 and 2.

- Fit suspending rails to the steel bar with enclosed clamping jaws. - Fit unit to suspending rails via its fastening brackets by means of threaded rods M8 * (on site). t

t

b

b

b

t

*

Fig. 1 10

Fig. 2

Fig. 3 3063445_201308

Electrical Connection Three-phase-motors

Operation of several LH-units with one switch or control device LH-units of different sizes and capacity can be oberated with one switch up to the max. permissible capacity or max. permissible current of the switch. When operating several LH-units, the motor terminals have to be switched parallel, the thermal cutouts and anti-frost thermostats in line! Terminal clamp 5 on site.

Low speed

High speed

LH-unit with termal cutouts and anti-frost thermostat

LH-unit with thermal cutouts

U1 V1 W1 W2 U2 V2 PE 12 11

1

2

4

PE

U1 V1 W1 W2 U2 V2 PE 12 11

U1 V1 W1 W2 U2 V2 PE 12 11

5

1

2

4

PE

U1 V1 W1 W2 U2 V2 PE 12 11

5

U1 V1 W1 W2 U2 V2 PE 12 11

5

1

2

4

PE

U1 V1 W1 W2 U2 V2 PE 12 11

5

U1 V1 W1 W2 U2 V2 TB TB R1 R2 5 PE

U1 V1 W1 W2 U2 V2 TB TB R1 R2 5 PE

LH-step-switch or control device (i.e. step-switch DS)

LH-step-switch or conrol device (i.e. step-switch DS)

Single-phase-AC-motors 230 V / 50 Hz Single-phase-AC-motors are delivered only in high-speed-wiring. Wire thermal cutouts in line with motor winding.

5-step-switch E5-3

Terminal box at mixing box

Speed control with 5-step-switch type E5‑... 5-step-switch E5-3

3063445_201308

11

Switches Single-step switch D1 for single-speed operation of one or several unit heaters. Operation voltage

400 V

Control voltage

230 V

Max. current

W2

TB

V1

U2

PE

W1

V2

TB

J

8A

Weight

0,9 kg

Prot. class

IP 54

Part no.

Room thermostat

U1

TB F1 3,15A

2

U1 V1 W1

4

L1

3

R2

S1

79 40 001

K1 1

L2

L3

N

Automatic start-up when winding temperature drops (motor). L1 L2 L3 N PE

TB-TB thermal cutout * Link acc. to motor type-plate ** Link is not applicable with room thermostat K!: 3/4 contact for heating requirements

Two-step switch DS for two-speed operation of one or several unit heaters. Operation voltage

400 V

Control voltage

230 V

Max. current

0,9 kg

Prot. class

IP 54

Part no.

W2

TB

V1

U2

PE

W1

V2

TB

U1 V1 W1 W2 U2 V2 TB TB R1 R2 5 PE

8A

Weight

U1

F1 3,15A

S1 1

79 25 110

5

7

2 4 6 10 8 12

14

13

0

Automatic start-up when winding temperature drops (motor).

1

U1

V1

W1

4

R2

L1

L2

L3

3

N

2

K1

L1 L2 L3 N PE

TB-TB thermal cutout * When connecting a room thermostat remove link K!: 3/4 contact for heating requirements Attention:

Without switches for complete protection we do not give motor warranty! When the winding temperature is being exceeded without a complete motor protection switch, the motor can get badly damaged. Complete motor protection switches for 3 x 230 V available on request. 12

3063445_201308

Switches Five-step switch D 5-... Fan motor with thermal cutout

for five-speed operation of one or several unit heaters with complete motor protection with reclosure preventing device.

L1 L2 L3 N PE

PE

Type

D5-1

D5-3

D5-7

D5-12

D5-19

Operation voltage

V

400

400

400

400

400

Control voltage

V

230

230

230

230

230

Max. current

A

1

2

4

7

12

Weight

kg

4,5

7,0

9,0

19,0

27,0

Prot. class

IP

40

20

20

20

20

Width

A

150

230

230

230

310

Height

B

200

310

310

310

385

Length

C

175

185

185

185

225

Part number

2740015 2740010 2740013 2740014 2740017

Locking switch-off at winding overtemperature (motor). Reclosing: switch position 0, then select requiered stage. Contact for heating requirements.

J

0 5 4 3 2 1

1

3

5

13

2

4

6

14

TB

TB

U1

V1 W1

U1

V1 W1 R2

TB

PE

*

R1

3

4

53

A1 K1 A2 54

S1 5 4 3 2 1

1 2 3 4 5

400 V 280 V 230 V 180 V 140 V

T1

140 V 180 V 230 V 280 V 400 V

T2

TB-TB thermal cutout When connecting a room thermostat remove link H1 = Sevice H2 = Interruption

230 V 3A

Weight

4,0 kg

Prot. class

IP 40

Part no.

L3

V2

Fan motor with thermal cutout

for five-speed operation of one or several unit heaters with single-phase-AC-motors with complete motor protection.

Max. current

L2

W2 U2

H1

21(23) 22(24) 7 (7) 3 (3) 9 (9) 5 (5) 1 (1) 4 (4) 20(16) 13(13) 17(17) 11(21) 15(15) 19(19)

*

L1

2,5AT

H2 1µF X2 250V

Five-step switch E 5-3

Operation voltage

F1

N

Link acc. to motor type-plate

TB

27 40 006

Automatic start-up when winding temperature drops (motor).

TB-TB thermal cutout * Whenn connecting a room thermostat remove link

Attention:

Without switches for complete protection we do not give motor warranty! When the winding temperature is being exceeded without a complete motor protection switch, the motor can get badly damaged. Complete motor protection switches for 3 x 230 V available on request. 3063445_201308

13

Switches 3-stage switch E3-7T with reclosing lock-out for 3-speed operation of one or more unit heaters with single-phase A.C. motors and complete motor protection. Operation voltage Max. current

230 V 7A

Weight

4,5 kg

Prot. class

IP 40

Part no.

Fan motor with thermal cutout

supply cable

27 01 064

Locking switch-off at winding overtemperature (motor). Reclosing: switch position 0, then select required stage. Contact for heating requirements.

TB-TB thermal cutout

* When connecting a room thermostat remove link

H1 = Service H2 = Interruption S1/K1 = Contact seizure depending on manufacture type Contact 3-4 heating requirements

3-stage switch D 3-4 with reclosing lock-out for 3-speed operation of one or more unit heaters with complete motor protection Operation voltage

400 V

Control voltage

230 V

Max. current

8,0 kg

Prot. class

IP 20

Part no.

L1

4A

Weight

27 01 065

Locking switch-off at winding overtemperature (motor). Reclosing: switch position 0, then select required stage. Contact for heating requirements.

Fan motor with thermal cutout

L1 L2 L3 N PE

L2

L3

PE

N

TB

TB

W2 U2

TB

U1

V1 W1

U1

V1 W1 R2

TB

PE

V2

*

Link acc. to motor typeplate

R1

3

4

F1

J 1µF X2 250V

2,5AT

F2

F3

F4

H2 H1

1

3

5

13

2

4

6

14

3

A1 K1 A2 4

0 3 2 1 13(23) 14(24) 5 (9) 3 (5) 1 (1) 4 (4) 10(16) 9 (13) 11(17) 7 (21)

3 2 1

1 2 3

400V 230V 140V

140V 230V 400V

T1

T2

TB-TB thermal cutout * When connecting a room thermostat remove link H1 = Service H2 = Interruption S1/K1 = Contact seizure depending on manufacture type Contact 3-4 heating requirements F2, F3, F4 = 5 AT

14

3063445_201308

Control Devices for Damper Actuators Automatic relay A1 Auxiliary relay for the automatic operation of the fresh air damper with an actuartor 230 V "OPEN-SHUT".

Actuator Open-Shut

Automatic relay A1

The automatic relay A1 switches the actuator to position "SHUT", if the LH-unit is switched off or if the anti-frost thermostat is activated. Switching on the LH-unit, the actuator switches to position "OPEN". Control voltage

Anti-frost thermostat

Selection switch fresh air/mixed air (on site)

230 V

Max. current

1,5 A

Weight

0,5 kg

Prot. class

IP 54

Part no.

Reverse function by changing of 2 and 3

79 65 020

Switch

Actuator Open/Shut

Reverse function by changing of 2 and 3

Automatic relay A1

Automatic relay A1S Auxiliary relay with integrated position transmitter for the automatic operation of the mixed air damper by means of a stepless actuator 230 V.

Actuator stepless

The automatic relay A1S switches the actuator to the position set on the position transmitter, if the LH-unit is switched off or if the anti-frost thermostat is activated.

Position transmitter

Switching on the LH-unit, the actuator switches to the position set at the position transmitter.

230 V Max. current

1,5 A

Weight

0,5 kg

Prot. class

IP 54

Part no.

3063445_201308

Control device

79 65 012

15

Thermostats Room thermostat

Max. current at 230 V / 50 Hz Heating: 10(5) A; Venting: 5(2) A Thermal feed-back Temperature range 5 - 30 °C Differential ± 0,5 K Protection class IP 30 Part no. 27 34 000

Room thermostat mith summer-winter-switch

Max. current at 230 V / 50 Hz Heating: 10(4) A; Venting: 5(2) A Thermal feed-back Temperature range 5 - 30 °C Differential ± 0,5 K Protection class IP 30 Part no. 27 34 700

Step switch

Room thermostat 

Room thermostat Heavy-duty-design 1

3

Max. current at 230 V / 50 Hz Heating: 16(4) A; Venting: 8(4) A Temperature range 0 - 40 °C Differential ± 0,75 K Protection class IP 54 Part no. 27 35 300

2 J

Room thermostat clock with weekly program

external remote sensor (optional)

Max. current 10(4) A at 230 V / 50 Hz Temperature range 5 - 40°C Differential adjustable 2 - 10 K Differential ± 0,1up to 3 K Storage locations 16 Function reserve 15 minutes Shortest switching interval 10 minutes Protection class IP 20 Part no. 27 44 079

Remote sensor for room thermostat clock

Plastic housing 52 x 50 x 35 mm Screw connection M16 Protection class IP 54 Part no. 27 35 410

Anti-frost thermostat

Max. current 10 A at 230 V / 50 Hz Range 4,5 °C bis 22 °C Differential 2,5 K Prot. class IP 43 Wiring of anti-frost thermostat in line with thermal cutouts!

1

2

4 J

LH Part no.

16

25

40

63

27 30 050

100 27 30 150

3063445_201308

Control System WRS BML ventilation programming module

• • • • • • •

Wall mounting base

• wall mounting base for use with the BML ventilation programming module as remote control.

LM1 Ventilation control unit

• • • • • • •

ventilation module to control air heaters with a two-stage motor easy controller configuration by selecting one of the preset system versions demand-optimised room temperature control via air heater speed control of the heating circuit pump control of one heat source demand-optimised boiler water temperature demand via eBUS eBus interface with automatic energy management

LM2 ventilation control unit

• • • • • • • •

ventilation module LM2 to control the room temperature via speed or mixing valve 2-stage motor control in conjunction with ventilation module LM1, or variable motor control in conjunction with EC motor or external inverter (0-10 V) easy controller configuration by selecting one of the preset system versions control of one heat source demand-optimised boiler water temperature demand via eBus eBus interface with automatic energy management control of mixed air damper induction louvre control

(incl. room temperature sensor)

room-dependent temperature control control by rotary selector with key function 4 function keys for frequently used functions (info, temperture, speed adjustment, fresh air proportion) installation either inside the ventilation control unit or, as remote control, in a wall mounting base only one BML ventilation programming module required to control up to 7 zones demand-optimised boiler water temperature demand via eBUS eBus interface

Outside or room temperature sensor

Radio clock

• for synchronising the clock inside the control unit with the DC77 transmitter

Radio clock with outside temperature sensor • for synchronising the clock inside the control unit with the DC77 transmitter, and capturing the outside temperature

Supply air sensor and sensor retainer

3063445_201308

17

Control System WRS Ventilation control unit LM1 with BML Description:

This configuration is used for heating buildings in conjunction with air heaters. The room temperature is captured by a sensor and the fan, the heating circuit pump and the heat source are switched on or off depending on demand. If the temperature deviation (set room temperature to actual room temperature) is low, the fan is operated in stage 1. If the temperature deviation is greater, it is switched to stage 2.

Example: Unit heater, heating with room temperature control

OS

BML LM1

supply heating circuit pump

room sensor

unit heater

boiler

Installation diagram: BML

LM1/X1

X1/K1 X1/eBus

supply Netz

X1/M2 B1

X1/B2

2

X1/M1

X1/B3

6

4

5 No. 1 2 3 4 5 6

18

Description room sensor outside sensor external release 2-stage motor heating circuit pump heat source

3 1

3063445_201308

Control System WRS Ventilation control units LM1 and LM2 with BML Description:

This configuration is used for heating buildings in conjunction with air heaters. The room temperature is captured by a sensor and the fans, the heating circuit pump, the heating circuit mixing valve and the heat source are switched on or off depending on demand.

Example: Unit heater, heating with room temperature control, mixing valve control, motor control, 2-stage AF

BML LM1

LM2

anti-frost-

supply

HCP mixing valve

LD15

supply unit heater

mixed air

supply air room thermostat sensor sensor ceiling sensor

induction louvre

boiler

Installation diagram: BML 2

LM1

LM2 2

2 eBus 5

supply Netz

3

2

3 Netz

LM1-M1

SS

LM1-B3

LM2-B2 14

LM2-B1 4

No. 1 2 3 4 5 7 8 9 10 11 12 13 14

Description room sensor supply air sensor outside sensor ceiling sensor external release anti-frost thermostat induction louvre 2-stage motor heating circuit pump heating circuit mixing valve heat source mixed air damper LD15, ceiling fan

3063445_201308

LM2-B5

LM1-M2; B1

LM2-M1/ LM2-X2

LM2-X3 5

8

13

2 7

LM2-B4

LM2-K1 eBus

9

LM2-M2 1

10

LM2-X1

12

11

19

Control System WRS LM2 Ventilation control unit with BML Description:

This configuration is used for heating buildings in conjunction with air heaters. The room temperature is captured by a sensor, and the fans, the heating circuit pump, the heating circuit mixing valve and the heat source are switched on or off depending on demand. The extract air fan is activated depending on the fresh air proportion.

Example: Unit heater, heating with room temperature control, mixing control, motor control with electronic 5-stage speed regulator OS BML

2

2

electronic 5-stage regulator

2

2

electronic 5-stage regulator

LM2

2

0 - 10V

0 - 10V 5

5

3

2 3

3

J

2

3

L1 N PE

7

L1 L2 L3 N PE

supply

supply

7

M

supply

supply air sensor

M

mixed air

mixed air unit

2

J

HCP mixing valve

L1 L2 L3 N PE

extract air unit

2

2

3

induction louvre

J

room sensor

J

anti-frost thermostat

ceiling sensor

boiler

Installation diagram: BML

LM2 eBus supply Netz 230V

3

B2

B3 K2

B1 B5

supply Netz 230/400V T1

DV X3 4

No. 1 2 3 4 5 6 7 8 9 10 11 12 20

Description room sensor supply air sensor outside sensor ceiling sensor mixed air damper fan frequency inverter heating circuit pump heating circuit mixing valve heat source anti-frost thermostat induction louvre

7

B4

EC FU

supply Netz 230/400V

T2

X2 M1

supply

K1

7

2 11 12

FU EC

5

eBus 6

1

B3 K1

M2

8

X1

10

9

3063445_201308

Actuators / Push-button Actuator OPEN-SHUT 230 V / 50 Hz

Actuator for automatic opening and closing of the fresh air damper. Controlling only by automatic relay A1.

Relay A1

4

3

3

2

PE

N

Power consumption 11 VA Rotation direction reversible Torque drive 15 Nm Running time 90 - 150 sec. Protection class IP 42 Part no. 22 69 523

PE

1

shut AUF N ZU open

SM 220

Stepless actuator 230 V / 50 Hz

Actuator for automatic operation of damper, induction louvre and mixing valve. Controlling only by automatic relay A1 and position transmitter. Power consumption 5 VA Rotation direction reversible Torque drive 15 Nm Running time 100 - 200 sec. Protection class IP 42 Part no. 22 69 522

for surface or concealed installation; for progressive control of the induction louvre to optimize the air throw

Control voltage

53

L N PE

surface/concealedtype push-button

113

230 V

Max. current

10 A

Prot. class

IP 20

Part no.

83

Push-button for 230V/50Hz actuator of induction louvre

1 Zu

1

4

2

5

Auf

auxiliary 2 terminal on site

27 01 063

actuator open-closed 1 2 3 230V N Zu Auf induction LM 230 W louvre

3063445_201308

21

Intermediate Terminal Box Intermediate terminal box

Intermediate terminal box for a parallel operation of several LH unit heaters. It is possible to wire one control device and three LH unit heaters or one control device, two LH unit heaters and an additional intermediate terminal box. LH unit heaters of different sizes and performances of up to the max. possible performance or rather the max. possible current of the switch or control device can be wired. Wiring according to the attached wiring diagrams.

Connection of 3 LH unit heaters with an intermediate terminal box

intermediate terminal box switch or control device

Operation of 7 LH-units with intermediate terminal box

intermediate terminal box

intermediate terminal box

intermediate terminal box

switch or control device

22

3063445_201308

Maintenance / Frost Protection Measures Maintenance

Attention: Do not clean electric heaters with water! For cleaning the heat exchanger from dust and dirt use vacuum cleaner or compressed air. For higher dirt accumulation use additionally commercial washing agents and luke warm water or compressed steam (not over 5 bar). Pull out the filter element on the access side to clean or to renew it. The filter element can be cleaned with the help of compressed air, batting or vacuum cleaner. All the remaining parts as motor, fan-impeller, mixing-box, adjustable fins and actuator are maintenance-free. Prior to finishing maintenance, check safe fastening of the LH-unit.

Frost protection measures

When unit is switched off: Drain all water-filled sections, blow out remaining water with compressed air! Steam heating coils being directly operated with fresh air have to be provided with steam on total height.

Pump

Before operation and after a longer rest period the pump has to be vented. For this purpose, the LH-unit has to be switched off. To proceed accordingly, remove plug acc. to sketch. When water is evacuated the plug is closed tightly again. The direction of rotation of the pump is marked with arrows on the type-plate. Pumps operating with AC always turn into the correct direction of rotation. Pumps operating with three-phase current have to be checked by removing the plug (threaded to the right) and by controlling the rotation of the shaft.

3063445_201308

23

Hydraulic Adjustment of Unit Heaters operating as a group General instructions

The hydraulic adjustment of unit heaters is a precondition for an economic and optimized control within a group. The hydraulic adjustment aims at a correct flow rate through all unit heaters.

Example 1:

Individual adjustment via control valves ( in addition to the connection fittings).

control valve

unit heater

boiler

VL RL

advantage:

low expenditure of pipework

disadvantage:

pressure adjustment required for each unit heater



Example 2:

Pipework assembly according to the Tichelmann system (equally long pipes per unit heater replace the individual adjustment)

unit heater

VL RL

boiler

advantage:

no pressure adjustment required

disadvantage: higher expenditure of pipework

24

3063445_201308

Rain protection hood and roof lead-in box Roof lead-in box and rain protection hood are supplied sepa rately. The rain protection hood is provided with a bird screen as standard. As an option a non-return damper may be supplied for the installation into the rain protection hood, on site.

Roof fastening

As an option and on extra price it is possible to supply 4 fastening angles for fitting the roof lead-in box. Fitting of fastening angles to be done on site because of different types of roofs and variable pitch.

Roof lead-in box

External fitting of fastening angles as well possible

Roof 4 x fastening angles to be adapted to the pitch of the roof Notice: The fastening angles are exclusively suitable for fitting the roof lead-in box. They are not designed for carrying the additional weight of unit components installed underneath the roof lead-in box.

Roof sealing

In order to facilitate the sealing of the roof on site, it is possible to supply a covering collar as an optional accessory, not fitted. Installation and fitting in accordance with the drawing:

Rain protection hood

X

Fit sealing material on site (included)

Covering collar Installation and sealing on site

X

Roof sealing (on site)

Roof lead-in box Covering collar Installation and sealing on site

3063445_201308

25

Rain protection hood and roof lead-in box Flexible connection

A unit heater or mixing box are connected to the internal flange of the roof lead-in box (matching bore holes) via a flexible connection "Q". In this case the roof lead-in box has to be on the roof and the mixing box, filter section or unit heater underneath the roof.

Roof lead-in box Flange of angle profile on the whole perimeter; generally spot-welded

Unit heater

Non-flexible connection

Flexible connection 4 x angle brackets of unit heater, only fitted when ordered

Direct fitting of unit heater or mixing box to the external angle flange. This flange is provided with the matching bore holes for the angle brackets of the unit heater, mixing box or filter section on the whole perimeter.

Roof lead-in box Flange of angle profile on the whole perimeter; generally spot-welded Unit heater

26

4 x angle brackets of unit heater, only fitted when ordered

3063445_201308

Notes

3063445_201308

27

Wolf GmbH Postfach 1380 • 84048 Mainburg • Tel. 08751/74-0 • Fax 08751/741600 Internet: www.wolf-heiztechnik.de

Part no.: 3063445_201308

Subject to modifications