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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
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 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.
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.
- Fit fastening brackets to the unit with enclosed screws.
- 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.
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 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.
Automatic start-up when winding tempera-ture drops (motor).
Operation voltage 230 V
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.
Operation voltage 400 V
Control voltage 230 V
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.
Operation voltage 230 V
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".
Control voltage 230 V
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
Installation diagram:
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
Installation diagram:
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
Control voltage 230 V
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