operation and maintenance instructions unit heaters...

Vorlage Montageanleitungen_Umschlag 13.11.12 10:21 Seite 1

Wolf GmbH • Postfach 1380 • 84048 Mainburg • Tel. 08751/74-0 • Fax 08751/741600 • Internet: www.wolf-heiztechnik.dePart no.: 3063445_201308 Subjecttomodifications GB

Operation and Maintenance Instructions

Unit Heaters LH(Translation of the original)

2 3063445_201308

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

Index

3063445_201308 3

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" 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.

Attention :

General / Symbols

4 3063445_201308

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 com-ponents, 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.

Safety Instructions / Standards, Regulations / Unit Description

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 as-sembly 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.

General unit description and design

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 in-structions have to be adhered to:

- 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

3063445_201308 5

Motors 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.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!

Attention:

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

Evacuationofairandfluidhastobeprovidedonsite!

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

Attention:

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 aremounted (1)

140°C when additional sections aremounted (2)

140°C without additional selections (2) 180°C without additional sections (2)

When fan stops all control valves have to be closed automatically.

Attention:Ceiling-mounted unit

(2)

(1)

Installation and Operation Instructions

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

LH 25 40 63 100Horizontal airflow V min [m³/h] 800 1600 2500 4000Vertical airflow V min [m³/h] 1000 2200 3200 5000

Protective measures: In any case it has to be secured that the electric heater is swit-ched 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

Attention:

6 3063445_201308

Clearances

Clearances for LH ceiling unit or wall unit in metres

LH LH to LH LH to wall25 7 - 9 3 - 440 9 - 11 3 - 563 11 - 13 4 - 6100 13 - 15 5 - 7

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



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.

Prior to the Installation

7 - 15 m 7 - 15 m 3 - 7 m

Air

thro

wSpacing Spacing Spacing

Primary air Primary air

Larger throw for very high rooms by means of

discharge cone

Four-side discharge for lower rooms

Secondaryvortex

Secondaryvortex

Primary air

larg

er th

row

by a

ppro

x. 2

5%up

to 2

,5 m

max

.

3063445_201308 7

Prior to the InstallationClearances

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

Ceiling-mounted unit,vanes deflected.

LH 25 40 63 100

LH from LHLH to wall

7 - 9m3 - 4m

9 - 11m3 - 5m

11 - 13m4 - 6m

13 - 15m5 - 7m

LH from LHLH to wall

- 12m4 - 6m

- 14m5 - 7m

- 16m6 - 8m

- 18m7 - 9m

Height wall-mounted unit with adaption cone and induction louvre

A

B

F

CD

E

A B C D E FLH 63 1040 120 270 300 350 460LH 100 1130 120 320 340 350 590

LH 63 100Type 1 2 1 2Max. height (m) 12 11 11 10

Higher above floor heights on request.

Air throw: wall-mounted unit LH 25 40 63 100Type 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4Air throw [m]*high speed 19 18 16 15 27 26 23 21 29 27 25 23 36 35 34 32low speed 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)

Air throw m

Angle of adjustment

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

0,2 m/sec.

Hei

ght a

bove

floo

rm

in. 2

,5m

max

. 4,0

m

LH 25 40 63 100Type 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4Height 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

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

Higher above floor heights on request.

Heightabovefloor,ceiling-mounted unit

Angle of adjustment

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

Hei

ght a

bove

floo

r [m

]

8 3063445_201308

Installation InstructionsSuspension 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.

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.

LH 25 40 63 100Lmax. [mm] 1100 1100 1100 1220

12

06

5

5

24

0

25

9

9

Threaded sheft

Lmax

Suspension

Bracket Support

Mounting brackets 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.

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]

a c

lb

f

d ghe

xx

xx

3063445_201308 9

Installation InstructionsPrior 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.

Fixingrail

Suspendingrail

Fastening brackets

LH-Unit

Suspending rail

Fastening bracket

- 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.

Fastening kit for concrete barvertical

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 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.

Fastening kit for steel barvertical

b

t

Fastening bracket

Fixing rail

Clamping jaws Suspending rail Fastening bracket Suspending rail

10 3063445_201308

Fastening kit for steel barinclined 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

t

Suspending rail

Fasteningbrackets

LH-Unit

Inclination equalization

Clamping jaws

Threaded rodsM8 (on site)

b bt t

b

t

Fig. 1 Fig. 2 Fig. 3

*

Fastening kit for steel barhorizontal and inclined wit-hout 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.


- Fig. 1 and 2: - 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.

- Fig. 3: - 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).

Installation Instructions

3063445_201308 11

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. permis-sible current of the switch.

When operating several LH-units, the mo-tor terminals have to be switched parallel, the thermal cutouts and anti-frost thermo-stats in line! Terminal clamp 5 on site.

U1 V1 W1 W2 U2 V2 PE 12 11

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

U1 V1 W1 W2 U2 V2 PE 12 11 5

U1 V1 W1 W2 U2 V2 PE 12 11 5

LH-unit with thermal cutouts

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

U1 V1 W1 W2 U2 V2 PE 12 11 1 2 4 PE

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

U1 V1 W1 W2 U2 V2 PE 12 11 1 2 4 PE5

U1 V1 W1 W2 U2 V2 PE 12 11 1 2 4 PE5

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

LH-unit with termal cutoutsand anti-frost thermostat

5-step-switch E5-3

Terminal box at mixing box5-step-switch E5-3

Single-phase-AC-motors230 V / 50 Hz

Single-phase-AC-motors are delivered only in high-speed-wiring.

Wire thermal cutouts in line with motor winding.

Speed control with 5-step-switchtype E5-...

Three-phase-motors High speedLow speed

Electrical Connection

12 3063445_201308

Switches

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.

Attention:

Single-step switch D1

for single-speed operation of one or several unit heaters.

Automatic start-up when winding tempera-ture drops (motor).

Operation voltage 400 V

Control voltage 230 V

Max. current 8 A

Weight 0,9 kg

Prot. class IP 54

Part no. 79 40 001

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

PE

N

L3

L2

L1

U12

1

U1

V1

W1

W2

U2

V2

PE

V1 W1

TB

4R2

NK1

L1 L2 L3 3

S1

F13,15A

J

TB

TB

Roomthermostat

Two-step switch DS

for two-speed operation of one or several unit heaters.




Max. current 8 A

Weight 0,9 kg

Prot. class IP 54

Part no. 79 25 110

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

L1L2L3NPE

U1 V1 W1 4

1

2 4 6 10 8 12 13

5 7 14

L1 L2 L3 3

210

R2

N

K1

S1

F13,15A

U1 V2V1 W1 TB TB R1 5R2 PEW2 U2

U1

V1

W1

W2

U2

V2

PE

TB

TB

3063445_201308 13

Switches

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.

Attention:

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

Fan motor with thermal cutout

Five-step switch E 5-3

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



Max. current 3 A

Weight 4,0 kg

Prot. class IP 40

Part no. 27 40 006

1µFX2250V

F12,5AT

H1

H2 A2

A1

K1

21(23)

1 3 5 13 53

2 4 6 14 54

PE

PE

N

N

L1

TB U2 V2W2

TB U1 V1

L1

L2

L2

L3

L3

TB TB PE U1 V1 W1 R1R2 3

22(24)

7 (7)

20(16)

3 (3)

13(13)

1 (1)

15(15)

9 (9)

17(17)

4 (4)

19(19)

5 (5)

11(21)

4

J

*

W1

T1

T2

S1

400 V

280 V

230 V

180 V

140 V

140 V

180 V

230 V

280 V

400 V

0 5 4 3 2 1

5

5

4

4

3

3

2

2

1

1

Fan motor withthermal cutout

Link acc.to motor type-plate

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

Five-step switch D 5-...

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

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

Type D5-1 D5-3 D5-7 D5-12 D5-19Operation voltage

V 400 400 400 400 400

Control voltage V 230 230 230 230 230

Max. current A 1 2 4 7 12Weight kg 4,5 7,0 9,0 19,0 27,0Prot. class IP 40 20 20 20 20Width A 150 230 230 230 310Height B 200 310 310 310 385Length C 175 185 185 185 225Part number 2740015 2740010 2740013 2740014 2740017

14 3063445_201308

Switches

3-stage switch D 3-4 with reclosing lock-out

for 3-speed operation of one or more unit heaters with complete motor protection

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



Max. current 4 A

Weight 8,0 kg

Prot. class IP 20

Part no. 27 01 065

1140V

3400V

2230V

2230V

3

0 3

1µFX2250V

F12,5AT

F2 F3 F4

2

H1

H2

A2

A1

K1

113(23)

1 3 5 13 3

2 4 6 14 4

L1

PE

L2

N

L3

TB U2 V2W2

TB U1 V1

L1

PE

L2

N

L3

TB TB PE U1 V1 W1 R1R2 3

14(24)5 (9)3 (5)1 (1)4 (4)

10(16)9 (13)11(17)7 (21)

400V

1140V

T1

T2

4

J

*

W1

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

Link acc. to motor type-plate

Fan motor with thermal cutout

3-stage switch E3-7Twith reclosing lock-out

for 3-speed operation of one or more unit heaters with single-phase A.C. motors and complete motor protection.

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


Max. current 7 A

Weight 4,5 kg

Prot. class IP 40

Part no. 27 01 064

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

Fan motor with thermal cutoutsupply cable

3063445_201308 15

Control Devices for Damper ActuatorsAutomatic relay A1

Auxiliary relay for the automatic operation of the fresh air damper with an actuartor 230 V "OPEN-SHUT".

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".


Max. current 1,5 A

Weight 0,5 kg

Prot. class IP 54

Part no. 79 65 020Actuator

Open/Shut

Reverse function by changing of2 and 3Automatic relay A1 Anti-frost

thermostat

Selection switch fresh air/mixed air (on site)

ActuatorOpen-Shut

Switch

Automatic relay A1

Reverse function by changing of 2 and 3

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.

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.

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. 79 65 012

Actuatorstepless

Positiontransmitter

Control device

16 3063445_201308

ThermostatsMax. current at 230 V / 50 HzHeating: 10(5) A; Venting: 5(2) AThermal feed-backTemperature range 5 - 30 °C Differential ± 0,5 KProtection class IP 30Part no. 27 34 000

Room thermostat

Max. current at 230 V / 50 HzHeating: 10(4) A; Venting: 5(2) AThermal feed-backTemperature range 5 - 30 °CDifferential ± 0,5 KProtection class IP 30Part no. 27 34 700

Room thermostat mith summer-winter-switch

Step switch

Room thermostat

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

Room thermostatHeavy-duty-design

3

J1 2

Max. current 10(4) A at 230 V / 50 HzTemperature range 5 - 40°CDifferential adjustable 2 - 10 KDifferential ± 0,1up to 3 KStorage locations 16Function reserve 15 minutesShortest switching interval 10 minutesProtection class IP 20Part no. 27 44 079

Room thermostat clockwith weekly program

external remote sensor

(optional)

Plastic housing 52 x 50 x 35 mmScrew connection M16Protection class IP 54Part no. 27 35 410

Remote sensor for room thermostat clock

Anti-frost thermostat

2 4

J1

Max. current 10 A at 230 V / 50 HzRange 4,5 °C bis 22 °CDifferential 2,5 K Prot. class IP 43Wiring of anti-frost thermostat in line with thermal cutouts! LH 25 40 63 100

Part no. 27 30 050 27 30 150

3063445_201308 17

• 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

BML ventilation programming module

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

Wall mounting base

• 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

LM1 Ventilation control unit (incl. room temperature sensor)

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

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

Control System WRS

18 3063445_201308

Control System WRSVentilation control unit LM1 with BML

2

1

4

5

3

6

BML

Netz

LM1/X1

X1/B2 X1/M2B1

X1/M1 X1/B3

X1/K1

X1/eBus

supply

Installation diagram:

No. Description1 room sensor2 outside sensor3 external release4 2-stage motor5 heating circuit pump6 heat source

Example:Unit heater, heating with room temperature control

supply

unit heater boiler

heating circuit pump

room sensor

BML

OS

LM1

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 tostage 2.

3063445_201308 19

Control System WRSVentilation control units LM1 and LM2 with BML

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.

Description:

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

AF

unit heater

boiler

supply LD15supply

mixed air

HCP mixing valve

induction louvre

anti-frost-thermostatroom

sensor

ceiling sensor

supply air sensor

BML

LM1 LM2

No. Description1 room sensor2 supply air sensor3 outside sensor4 ceiling sensor5 external release7 anti-frost thermostat8 induction louvre9 2-stage motor10 heating circuit pump11 heating circuit mixing valve12 heat source13 mixed air damper14 LD15, ceiling fan

9

5

72

14

8

LM1-M1

LM1-B3

LM1-M2;B1

LM2-B5

3

NetzSS

Netz

BMLLM2

2 2LM1

eBus

2

2

35

LM2-B2

4

LM2-B4

1

13

LM2-X3

LM2-B1

LM2-LM2-

M1/X2

10

LM2-M2

11

LM2-X1

LM2-K1

eBus

12


supply

20 3063445_201308

Control System WRS

LM2 Ventilation control unit with BMLThis 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.

Description:

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

5

2

2

7

3

3

3 3 2

22

2

2

3

2

L1 N PE

M

J 2

J

J

J

M

0 - 10V

2

0 - 10V

5

7

L3 N PEL2L1 L3 N PEL2L1

LM2

boiler

mixed air unit mixed air

HCP mixing valve

induction louvre

anti-frost thermostat

room sensor

ceiling sensor

supply air sensor

electronic 5-stage regulator

BMLOS

supplyextract air unit

electronic 5-stage regulator

supply

supply

7

T1Netz230/400V

B3K2

K1

Netz230V

BML LM2

eBus

98

512

2 11

B2

B4

X3

B1

B5

X2M1

X1M2

4

1

eBus

10

3

7

DV

Netz230/400V T2

B3K1

6

FUEC

ECFU

No. Description1 room sensor2 supply air sensor3 outside sensor4 ceiling sensor5 mixed air damper6 fan7 frequency inverter8 heating circuit pump9 heating circuit mixing valve10 heat source11 anti-frost thermostat12 induction louvre


supply

supply

supply

supply

3063445_201308 21

Actuators / Push-button

Push-button for 230V/50Hzactuator of induction louvre

for surface or concealed installation;for progressive control of the induction lou-vre to optimize the air throw

1

2

4

5

1

1

N

L

N

PE

LM

2

Zu

230

3

Auf

W

2

Zu Auf

actuatoropen-closed 230Vinduction louvre

surface/concealed-type push-button

auxiliaryterminal on site

83

11353


Max. current 10 A

Prot. class IP 20

Part no. 27 01 063

Actuator for automatic operation of damper, induction louvre and mixing valve.Controlling only by automatic relay A1 and position transmitter.

Power consumption 5 VARotation direction reversibleTorque drive 15 NmRunning time 100 - 200 sec.Protection class IP 42Part no. 22 69 522

Stepless actuator 230 V / 50 Hz

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

Power consumption 11 VARotation direction reversibleTorque drive 15 NmRunning time 90 - 150 sec.Protection class IP 42Part no. 22 69 523

N

2 3

4 3

1 PEZU NAUF

SM 220

PE

Relay A1Actuator OPEN-SHUT 230 V / 50 Hz

shut open

22 3063445_201308

Intermediate Terminal Box

Operation of 7 LH-units with intermediate terminal box

intermediate terminal boxintermediate terminal box

switch orcontrol device

intermediate terminal box

Intermediate terminal box

Connection of 3 LH unit heaters with an intermediate terminal box

intermediate terminal box

switch or control device

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 perfor-mance or rather the max. possible current of the switch or control device can be wired.

Wiring according to the attached wiring diagrams.

3063445_201308 23

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.

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.

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.

Pump

Maintenance / Frost Protection Measures

24 3063445_201308

Hydraulic Adjustment of Unit Heaters operating as a groupThe 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.

General instructions

Example 2: Pipework assembly according to the Tichelmann system(equally long pipes per unit heater replace the individual adjustment)

VL

RL advantage: no pressure adjustment required

disadvantage: higher expenditure of pipework

unit heater

boiler

Individual adjustment via control valves ( in addition to the connection fittings).Example 1:

VL

RL advantage: low expenditure of pipework

disadvantage: pressure adjustment required for each unit heater

unit heater

control valve

boiler

3063445_201308 25

Rain protection hood and roof lead-in boxRoof lead-in box and rain protection hood are supplied separately. 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.

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:

Roof sealing

X Fit sealing materialon site (included)

Covering collarInstallation and sealing on site

X

Rain protection hood

Roof sealing (on site)

Covering collarInstallation and sealing on site

Roof lead-in box

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 fastening

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.

External fitting of fastening angles as well possible

4 x fastening angles to be adapted to the pitch

of the roof

Roof lead-in box

Roof

26 3063445_201308

Rain protection hood and roof lead-in box

Flexible connection

4 x angle brackets of unit heater, only fitted when

ordered

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.

Flexible connection

Roof lead-in box

Flange of angle profile on the whole perimeter; generally spot-welded

Unit heater

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.

Non-flexibleconnection

Roof lead-in box

Flange of angle profileon the whole perimeter;generally spot-welded

4 x angle brackets ofunit heater, only fitted

when orderedUnit heater

3063445_201308 27

Notes

Wolf GmbH

Postfach 1380 • 84048 Mainburg • Tel. 08751/74-0 • Fax 08751/741600

Internet: www.wolf-heiztechnik.de

Part no.: 3063445_201308 Subjecttomodifications

operation and maintenance instructions unit heaters...

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