manualshive.com logo in svg

Wolf BWL-1 S, Installation And Operating Instructions Manual, Page: 44 / 120

Share
Download
Wolf BWL-1 S Installation And Operating Instructions Manual Download Page 44

44

3064298_201507

25. Power supply to the indoor module

Rücklauftemperaturfühler

V

orlauftemperaturfühler

Drehzahl

Heizkreispumpe

Heizkreisdrucksensor

Heizkreisdurchfluss

L1

N1

1

L1

1

2

L2

2

3

L3

3

4

N1

4

5

N2

5

6

N3

6

7

PE

7

8

9

11 13 15

10 12 14 16

L2

N2

L3

N3

N L PE

PE

X1

X2

E1

E2

AF

SF

EBu

s

GN

D

GN

D

GN

D

GN

D

GN

D

PE

X9:

1

9

230V 

F

A

N

FE

Anst. E-Heizung

+23V

CLR

+3V3

H

K

P

PW

M

A

W

O

C

O

M

R

x

A

WOCOM

Tx

GN

D

GN

D

GN

D

eBus

SG-1

GND

GN

D

wBus

Para

.

VIS TX

GN

D

+5V

D

FL-

H

K

VIS RX

R

LF

GN

D

+5

V

D

H

K

GN

D

+12V

S

G

-0,E

V

U

GN

D

VLF

GN

D

wBus

8

L1

N

N’

N’

N’

N’

NO

NC

L1’

L1’

L1-ZHP

Netzschalter

ge

br

gn

br

rt

or

or

rt

br

br

bl

ws

br

bl

bl

br

br

ge

gn

gn/ge

sw

sw

gn

ge

br

rt

vio

br

sw

bl

sw

rt

sw

vio

br

N

ws

br

gn

ge

L

N´

L´

bl

gr

gn

ge

SAF

1 2

AF

E1

eBUS

+

-

1 2

a b

L1

HKP

3WV

N

N

L1

Netz

N

L1

Z1

N

L1

A1

N

L1

HCM-3

E2

a b

K1

2

A2

A1

4

6 14

1

3

5 13

X10:

1

X8:8

1

X7:

13

1

bl

gn

bl

vi

o

ge

br

or

sw

PWM

P

6

X6:1

X4:1

5

X5:1

X3:1

2

4

1

1

2

9

10

2

eBus

X3

2

X30

8

1

X34

X33

Frontpanel

Kontaktplatine

AM/BM

rt

sw

vio

br

bl

gr

gn

ge

S1

Reset

X31:

6

1

+23V

+3V3

eBus

GND

wBus

+5V

X11:1

9

GND

+3V3

eBus

N.C.

wBus

VISTX

CCTX

CCRX

X1:1

16

X2:1

10

VISRX

sw

br

rt

or

br

bl

br

bl

br

or

rt

rt

or

gn

sw

br

ge

sw

sw

br

br

V

ersorgung ZHP

3WV

heize

n

intern

br: 230V

br: 230V

ge/gn: PE

bl: 

N

bl: 

N

ge/gn: PE

WOLF

WOL

F

AWO:

X_A1

AWO:

X_A3

AWO:

X_A2

SG_0, EV

U

Geräteerdun

g

COM, Ni

C

2, 

C

1

Param

SG_1

Elektro-

Heizstab

sw

br

or

rt

ISM7

i

(optional)

WLAN

LA

N

S1

rt

or

br

sw

X1:1

4

Elektro

-

Heizsta

b

3WV

heizen

extern

25.4 Wiring diagram, HCM-3 

control PCB, indoor module

Electric 

heater

Supply

,

electric heating

Output, 3WUV heating/ DHW external

SG_0, PSU SG_1, C2, C1 COM, Ni

Output 3WUV  heating/ DHW  internal

Appliance earth

Output

ZHP

 supply

Flow temperature sensor  T_boiler

Heating circuit pressure  sensor HC

 pressure

Heating

 circuit

 flow

 rate

 

DFL

 HC

Return temperature sensor  T_return

ZHP

 speed

Control feed

Heating/cooling

E2/SAF

GTS

Contaxt PCB

Power switch

Summary of Contents for BWL-1 S

Page 1: ...heat pump BWL 1 S B 07 10 14 GB WolfGmbH Postfach1380 D 84048Mainburg Tel 49 8751 74 0 Fax 49 8751 741600 Internet www wolf heiztechnik de Document no 3064298_201507 Subject to technical modifications Integrated system log book From HCM 3 FW 1 30 AM FW 1 40 ...

Page 2: ...odule 22 Installing the heat pump 14 Positioning the wall duct 23 15 Routing the refrigerant lines 24 16 Connecting the refrigerant lines to the outdoor module 25 17 Connecting the refrigerant lines of the indoor module 26 18 Filling the refrigerant lines 27 28 19 Testing the refrigerant lines for leaks 29 20 Connecting the heating cooling circuit and the DHW circuit 30 32 21 Split heating centre ...

Page 3: ...9 4 2 Key lock 54 29 4 3 DHW operating mode ECO Comfort 54 29 4 4 DHW quick heat up 55 29 4 5 Energy saving mode no function 55 29 4 6 Active cooling 55 29 5 Heating contractor menu structure 56 Contractor level 30 Contractor level password 57 31 Contractor level 58 78 Overview of contractor level 58 31 1 Relay test 58 31 2 System 58 31 3 Parameters 59 31 3 1 Overview of contractor parameters 60 6...

Page 4: ...g book 103 107 53 1 Responsibilities of the operator 103 53 1 1 Annual leak test 103 53 1 2 Compulsory documentation 104 53 1 3 Dismantling the heat pump and disposing of the refrigerant 104 53 2 System data 105 107 Information 54 Maintenance cleaning 108 109 55 Troubleshooting 110 112 56 Abbreviations key 113 57 Product fiche according to Regulation EU no 811 2013 114 117 58 Technical parameters ...

Page 5: ...chinery Directive 2006 95 EC Low Voltage Directive 2004 108 EC EMC Directive DIN EN standards DIN EN 349 DIN EN 378 DIN EN 12100 DIN EN 14511 DIN EN 60335 1 DIN EN 60335 2 40 DIN EN 60529 DIN EN 60730 1 DIN EN 55014 1 DIN EN 55014 2 National standards directives DE DIN 8901 BGR 500 Part 2 VDI 2035 Part 1 3 Drinking water ordinance CH NEV SR 743 26 Certificate of competence The handling of refriger...

Page 6: ...nection Work on the refrigerant circuit must only be carried out by a qualified contractor Do not use Teflon sealant in the heating circuit as this may result in leaks Never treat appliance surfaces with scouring agents or cleaning agents containing acid or chlorine When siting the heat pump position and install it securely to prevent it slipping or sliding during operation The outdoor unit may on...

Page 7: ...ing principle of a heat pump Application area The split air water heat pump for heating water temperatures up to 55 C and air temperatures down to 15 C or 20 C is designed exclusively for the heating of heating water and domestic hot water The heat pump can be used in new or existing heating systems taking into consideration the application limits see Specification 4 Expansion valve 3 Condenser 2 ...

Page 8: ... treatment facility in the cold water supply line when heating DHW in order to prolong the maintenance interval Even if water hardness is less than 16 8 dH an increased risk of scaling may occur in some areas necessitating suitable softening measures Failure to take such measures will result in premature scaling of the appliance and reduced DHW convenience The contractor should always check the lo...

Page 9: ...cased in box f f Indoor module fully encased in box containing the following Installation and operating instructions including system log book and maintenance instructions Commissioning report with checklist Suspension bracket and assembly set for indoor module 3x pluggable pipework for appliance connection Ø 28 with O rings and clips Vent hose for commissioning Type plate supplement for the outdo...

Page 10: ...essory for BWL 1SB Boiler water temperature sensor Control electronics and power supply connection Condenser Heating circuit flow sensor HC 3 way diverter valve heating DHW Refrigerant pressure sensor Return temperature sensor Refrigerant line connection Optional use of AM display module AWO boiler water temperature sensor for outdoor module controller AWO T_boiler Refrigerant temperature T_conden...

Page 11: ...4 way valve Electronic expansion valve Inverter compressor Layout BWL 1S B 10 14 outdoor module Layout BWL 1S B 07 outdoor module 5 Layout Evaporator Evaporator Fan Liquid separator 4 way valve Electronic expansion valve Inverter compressor ...

Page 12: ...ulation Schrader valve and temperature sensor heating circuit connections 28 x 1 Sound and heat insulated sealed against formation of condensate Components secured in EPP plug in system for fast assembly Smart Grid Ready for integration into smart grids plus EHPA quality seal Heating DHW temperatures can be increased externally e g by smart grid or PV system Outdoor module Version with one EC axia...

Page 13: ...B Indoor module 373 440 344 790 118 695 157 214 258 97 75 50 170 170 93 50 17 167 132 28 100 143 Return heating DHW 28x1 Liquid line 5 8 UNF Hot gas line 7 8 UNF Flow heating 28x1 Hose safety valve DN 25 Flow DHW 28x1 Electrical connection ...

Page 14: ...14 3064298_201507 7 Dimensions BWL 1S B BWL 1S B 07 outdoor module 1040 340 527 378 260 865 48 253 ...

Page 15: ...15 3064298_201507 7 Dimensions BWL 1S B BWL 1S B 10 and BWL 1S B 14 outdoor module 900 340 705 357 1255 97 50 97 ...

Page 16: ...or alkaline gases Do not install in a location directly exposed to onshore winds as this will result in a risk of corrosion from the saline air particularly on the evaporator fins In locations with strong winds it may be necessary to construct wind protection to divert the onshore wind Strong winds may interfere with evaporator ventilation In areas with high snowfall or in very cold places protect...

Page 17: ...ework for the refrigerant circuit and heating side must not be used to transport the appliance Only use the grab handles provided when transporting the heat pump Bear in mind the weight of the heat pump Transport to the installation site To prevent damage during transport the heat pump must remain packaged and on its wooden pallet while being transported to the final installation site by pallet tr...

Page 18: ...nd In areas with heavy snowfall the minimum installation height must be increased or a canopy must be constructed over the outdoor module Minimum clearances for the outdoor module 600 300 600 300 Air discharge Air intake 300 300 100 Air discharge Air intake 220 300 100 Fig Front view of outdoor module BWL 1S B 10 14 Fig Front view of outdoor module BWL 1S B 07 Fig Plan view of outdoor module BWL 1...

Page 19: ...e refrigerant and water could escape resulting in a risk of flooding 1 Mark the Ø12 holes to be drilled for the suspension bracket taking into account the minimum clearances 2 Insert the rawl plugs and fit the suspension bracket using the bolts supplied 3 Hang the indoor module into the suspension bracket using the mounting stay 800 40 40 1000 150 Fig Front view of indoor module Fig Plan view of i...

Page 20: ...conditions and applicable building regulations C Foundation strip D KG pipe DN 100 with 2 pipe bends 45 instead of 1x 90 for refrigerant lines and electrical cables to the indoor module pipe requires sealing on site only required if routing the lines below ground level E Ground F Footpath or similar G External wall final dimensions A B D E F G 650 1000 200 200 160 BWL 1S 07 527 BWL 1S 10 14 705 60...

Page 21: ...oncrete with gravel base providing sufficient frost protection cut out for cable line entry see foundation diagram Tighten the nuts of the rubber mounts until approx 8 mm of rubber becomes visible 8 mm Secure in accordance with structural characteristics taking into account the appliance weight Please note ...

Page 22: ...all mounting the outdoor module Tighten the nuts of the rubber mounts until approx 8 mm of rubber becomes visible 8 mm Secure in accordance with structural characteristics taking into account the appliance weight Please note ...

Page 23: ...istance from building wall Watertight insulated wall duct Pipe clamp with EPDM insert Please note The wall mounting support can only be used on walls with a high mass per unit area 250 kg m Lightweight walls or stud walls are not permitted Insulated wall duct Sealing required X BWL 1S B 07 220 mm BWL 1S B 10 14 300 mm X BWL 1S B 07 220 mm BWL 1S B 10 14 300 mm ...

Page 24: ... differentials If the height differential between the indoor and the outdoor units is 4 m both refrigerant lines will require oil riser elbows to prevent oil shortages in the compressor Cooling mode Heating mode Suction line gaseous Injection line phase mixture Max 4 m Oil lift bend on site Liquid line liquid Hot gas line gaseous Max 4 m Cooling mode Heating mode Suction line gaseous Injection lin...

Page 25: ...ns C liquid line and D hot gas line of the refrigerant lines Replace nuts with the union nuts supplied indoor unit 5 8 UNF for liquid line 7 8 UNF for hot gas line Flare the pipe ends Tighten the nuts Tighten nuts with the following torque Line Connection to outdoor unit Torque in Nm Liquid line Ø 10 mm 5 8 UNF 37 4 Hot gas line Ø 16 mm 7 8 UNF 70 7 Connecting the refrigerant line to the outdoor m...

Page 26: ...olf range of accessories can be used as an alternative to flaring Do not allow any contaminants e g metal swarf or moisture to enter the copper pipes Connect the copper pipes Tighten nuts with the following torque Line Connection to indoor unit Torque in Nm Liquid line Ø 10 mm 5 8 UNF 37 4 Hot gas line Ø 16 mm 7 8 UNF 70 7 Please note Liquid line Hot gas line Connecting the refrigerant line to the...

Page 27: ...Refrigerant R410A used in WOLF split heat pumps is an air displacing non toxic gas Uncontrolled release of refrigerant may result in breathing difficulties and asphyxiation Observe the corresponding regulations and guidelines for handling this refrigerant Ensure adequate ventilation in enclosed spaces Observe the regulations and guidelines for handling R 410A Direct contact with refrigerant can be...

Page 28: ...pped up with an additional 60 g m of refrigerant R410A The additional refrigerant can be added after evacuating the refrigerant lines and before opening the shut off valves on the outdoor module 18 Filling the refrigerant lines Outdoor module Indoor module Shut off valves Hot gas line Ø 16 mm Liquid gas line Ø 10 mm Service valve Schrader valve Manometer block Vacuum gauge with shut off valve Vacu...

Page 29: ...g non toxic gas Uncontrolled release of refrigerant may result in breathing difficulties and asphyxiation Check the connections for refrigerant leaks All flared connections on the refrigerant lines between the indoor and outdoor unit All soldered joints and screw connections on the refrigerant lines in the indoor and outdoor unit ...

Page 30: ...nser can be flushed when required Flushing the heating system Return heating DHW 28 x 1 Flow heating 28 x 1 Hose safety valve DN 25 Flow DHW 28 x 1 Filling the heating system Before commissioning the system must be filled and vented Open the cap on the vent in the indoor module by one revolution Open all heating circuits Slowly fill the entire heating system and boiler while cold via the BDF valve...

Page 31: ...ed Wolf recommends a sludge separator with magnetite separator to protect the appliance and the high efficiency pump from dirt sludge and magnetite Dirt trap 20 Connecting the heating cooling circuit and the DHW circuit If no separating cylinder is being used the minimum heating water flow rate can be ensured by means of an overflow valve Overflow valve An electronically regulated high efficiency ...

Page 32: ...bathroom is permanently and fully open requires the written consent of the operator For this the minimum flow rate must be verified by means of a pressure drop calculation If necessary one or more heated heating circuits s can be specifically opened fully via output A1 during defrost mode The valve opening time must be 20 sec Buffer cylinder In order to ensure that the heat pump operates reliably ...

Page 33: ...t heating centre with CEW 2 200 Split heating centre with CEW 2 200 Height of indoor module A mm 790 Height of CEW 2 200 B mm 1290 Overall height C mm 2080 Overall height with 25 l expansion vessel DEV accessory on back of indoor unit D mm 2160 Width E mm 650 Depth mm 685 2100 2200 800 300 500 Service clearances Overall height with DEV Further information can be found in the instructions for the C...

Page 34: ...dual currents Type A RCDs are not suitable Do not route sensor leads alongside 230 V or 400 V cables Danger due to live electrical components Please note Turn off the ON OFF switch before removing the casing Never touch electrical components or contacts when the ON OFF switch is in the ON position This carries a risk of electrocution that could result in injury or death The terminals are live even...

Page 35: ...oor module BWL 1S B 10 400 V Indoor module BWL 1S B 10 230 V 50 Hz control PSU PV Smart grid 230 V 50 Hz electric heating or 400 V 50 Hz electric heating 2 400 V 50 HZ outdoor module 3 3 5 4 5 On site connections AWO BUS 230 V 50 HZ outdoor module 3 Outdoor module BWL 1S B 10 230 V Indoor module BWL 1S B 14 230 V 50 Hz control PSU PV Smart grid 230 V 50 Hz electric heating or 400 V 50 Hz electric ...

Page 36: ...4 13 Mains 3 See Specification for fuse protection values In terms of safe installation the AWO BUS connection 43 V 12 V is not low voltage and must be routed together with the 230 V 400 V cable Do not interchange wires L and N on the mains connection If wires L and N of the mains connection are interchanged the AWO BUS may carry mains voltage leading to appliance damage Only one BUS connection ma...

Page 37: ...ply to the indoor module Opening the control unit cover Cable entry fuse replacement Fuse F1 Cable entry AWO communication PCB Opening unhooking indoor module casing Terminal strip X1 HCM 3 control PCB Contactor for electric heating ...

Page 38: ... Specification for fuse protection values 5 4 6 kW 2 3 kW N1 L1 L2 L3 PE On the BWL 1S with integral 3 phase electric heating the heater connection can be either single phase 2 phase or 3 phase Depending on demand the control unit activates the electric heating via a contactor 6 kW heating element connection 9 kW heating element connection optional L1 N PE 2 kW L1 N PE 3 kW L1 L2 N PE 4 kW L1 L2 N...

Page 39: ...t raising htg 0 20 C WP027 Ext raising DHW 0 20 C WP028 External activation Off HP HP el htg Terminals X1 9 and 10 SG 0 Terminals X1 11 and 12 SG 1 Function open open Heat pump standard mode open closed Start recommendation temperature raising closed open External deactivation see also power OFF closed closed Start command temperature raising 25 2 2 PV photovoltaics temperature raising The set tem...

Page 40: ...Only possible with certain configurations Z1 230V output when ON OFF switch is ON Control unit power supply Max 1 5 A 345 VA per output sum of all outputs no more than 600 VA 25 3 HCM 3 control PCB connection Fig HCM 3 control PCB Only one external voltage of max 10 V may be connected to input E2 SAF otherwise the control PCB will be destroyed 1 a 10 V 2 b GND Please note When installing the appli...

Page 41: ... contact separation for all poles No other consumers may be connected to the connection cable In rooms with a bathtub or shower the appliance may only be connected via an RCD The mains supply to the indoor module must be without power OFF facility and switchable tariffs Note During power OFF it is not possible to operate the compressor with power generated on site PV temperature raising Installati...

Page 42: ...2 T4A M4A 25 Power supply to the indoor module Connection HCP 230 V AC max 1 5 A Push connecting cable through cable entry Connect the connecting cable to terminals L1 N and Max 1 5 A 345 VA per output sum of all outputs no more than 600 VA Fig HCP connection Connection 3WUV heating cooling 230 V AC max 1 5A Push connecting cable through cable entry Connect the connecting cable to terminals L1 N a...

Page 43: ... be connected to input AF as this could destroy the component Please note Fig Connection outside temperature sensor Connection cylinder sensor Push connecting cable through cable entry Connect the connection cable for cylinder sensor SF to the SF terminals as shown in the wiring diagram No external voltage may be connected to input SF as this could destroy the component Please note Fig Cylinder se...

Page 44: ... gn bl vio ge br or sw PWM P 6 X6 1 X4 1 5 X5 1 X3 1 2 4 1 1 2 9 10 2 eBus X32 X30 8 1 X34 X33 Frontpanel Kontaktplatine AM BM rt sw vio br bl gr gn ge S1 Reset X31 6 1 23V 3V3 eBus GND wBus 5V X11 1 9 GND 3V3 eBus N C wBus VISTX CCTX CCRX X1 1 16 X2 1 10 VISRX sw br rt or br bl br bl br or rt rt or gn sw br ge sw sw br br Versorgung ZHP 3WV heizen intern br 230V br 230V ge gn PE bl N bl N ge gn P...

Page 45: ...1507 25 Power supply to the indoor module Wiring diagram AWO communication PCB indoor module AWO pressure sensor T_condenser AWO refrigerant temperature sensor AWO T_boiler condenser pressure refrigerant temperature ...

Page 46: ...lues specific to the split air water heat pump can be programmed and displayed Specification LCD screen 3 4 quick start keys 1 rotary selector with push button function Please note Use when BM2 is used as a remote control or in a cascade circuit AM is always in the heating appliance AM BM 2 Operating mode Heating mode HP status ON Status 2 1 3 14 12 20 01 13 1 5 bar 25 2 C 1x Boiler temperature He...

Page 47: ...heating Key 1 Key 2 Key 3 Key 4 in this view no function Key 1 Key 2 Key 3 Key 4 14 12 20 01 13 1x Heating appliance 1x BM 2 status display Page heading Time Date Rotary selector with pushbutton function Display of system data content varies Quick start keys Operating mode HP status eBUS connection available eBUS connection not available HTG 1 5 bar Pressure 25 2 C Boiler temperature Operation in ...

Page 48: ...e AM display module Page heading Rotary selector with pushbutton function Quick start keys Key 1 Key 2 Key 3 Key 4 Boiler temperature 38 0 C System pressure 1 5 bar Heating appliance Compressor ON Heating appliance pump ON Heating appliance in heating mode Heating appliance on standby Heating appliance in DHW mode A1 Programmable output ON Heating appliance in a fault state Function displays ...

Page 49: ...p freq 85 Hz Fan speed 745 rpm Heating output 4 1 kW El output 1 8 kW Press the quick start key you wish to program turn the rotary selector to indicate the desired set temperature then press the rotary selector to confirm Press Press Press Press Acknowledge fault End Back Key 1 Key 2 Key 3 Key 4 Display data for external unit Set temperature heating if BM 2 as remote control no function Set tempe...

Page 50: ...oiler temperature 38 0 C System pressure 1 5 bar Heating appliance Heating appliance Flow temperature System pressure Operating mode Standby HP status Standby Status Status Operating mode HP status Notification Fault Fault since Notification T_boiler Dur Number fr 12 20 min 1 12 Turn Turn Turn ...

Page 51: ...nded Display shows Meaning ODU test Outdoor unit test Test Relay test active IDU Antifreeze HC Heat pump frost protection function heating circuit temperature below frost protection limit T_boiler T_return T_header Antifreeze DHW Heat pump frost protection function DHW cylinder temperature below frost protection limit DFL low Blocking of heat pump electric heating until the flow rate is back withi...

Page 52: ...an speed ZHP speed AWO T_boiler HC flow rate Power consumption Heating output Cooling capacity Compressor freq T_evaporator T_condenser T_hot gas T_supply air HCM 3 firmware Elec htg status Add ht gen status Htg energy amount Clg energy amount DHW energy amount back 29 3 Displays system data Displays T_outside 14 4 C T_return 22 4 C 29 Operating the AM display module ...

Page 53: ...ettings can be found below 29 4 1 In the Language submenu 26 different languages can be selected German English French Dutch Spanish Portuguese Italian Czech Polish Slovakian Hungarian Russian Greek Turkish Bulgarian Croatian Latvian Lithuanian Romanian Swedish Serbian Slovenian Danish Estonian Finnish Norwegian Main menu Submenu Menu item Main menu back Displays Default settings Contractor back D...

Page 54: ...l heat source is activated When the compressor s application limit is reached FL RT max the electric heating additional heat generator continues the heating process until the set DHW temperature is achieved If the maximum cylinder heating time is exceeded DHW mode is interrupted for the duration of the set maximum cylinder heating time WP022 ECO setting In the ECO setting the heat pump tries to re...

Page 55: ...tive cooling Setting range Off On Factory setting Off Enables the user to activate deactivate active cooling This requires that the system is configured with active cooling and that active cooling is enabled via contractor parameter WP058 factory setting Off During active cooling the cooling capacity of the heat pump is transferred to the heating system Cooling Config 1 5 14 15 51 WP058 ON Outside...

Page 56: ...xx x C T_return xxx x C T_outside xxx x C T_header xxx x C T_DHW xxx x C HC pressure xxx x bar ZHP speed xxx Flow rate xxx x l m ODU service M o d level xxx Comp freq xxx Hz Fan speed xxxxx U m T_evap xxx x C T_hot gasxxx x C T condens xxx x C T air intake xxx x C Indoor module process values display only Outdoor module process values display only Main menu back Displays Default settings Contracto...

Page 57: ... rotary selector to obtain authorisation After authorisation open the Contractor menu item Password Authorisation required Password Authorisation required 0 Main menu back Displays Default settings Contractor back Authorisation required Password 1 Password Authorisation required 10 Authorisation required Contractor 1111 Contractor back Relay test System Parameter Parameter reset ...

Page 58: ...Password for contractor level Contractor back Relay test System Parameter Parameter reset ZHP HCP 3way div vlv htg DHW 3way div vlv htg clg A1 Relay test Off Off Off Off Off back ZHP HCP 3way div vlv htg DHW 3way div vlv htg clg A1 Relay test ON Off Off Off Off back Display Meaning ZHP Feed heating circuit pump HCP Heating circuit pump 3way div vlv htg DHW Three way diverter valve heating DHW 3way...

Page 59: ...so observe the information settings in the installation instructions AM display module for the contractor If a parameter is not available it will not be shown on the display 31 3 Parameters 31 Contractor level Main menu Submenu Menu item Chapter Password for contractor level Contractor back Relay test System Parameter Parameter reset WP001 WP002 WP003 System configuration Parameter 01 none none WP...

Page 60: ...0 0 70 0 C 55 C WP018 Min boiler temp BWT min 10 0 40 0 C 20 C Domestic hot water DHW WP020 Cylinder hysteresis 1 0 10 0 C 2 0 C WP021 Enable max cylinder heating time Off On ON WP022 Max cylinder heating time 30 min 240 min 120 min WP023 Delay for heating by add ht generator DHW 1 min 180 min 60 min WP024 Minimum DHW temperature 10 0 C 55 0 C 45 0 C Smart grid WP025 Smart grid Off On Off WP026 Ex...

Page 61: ...ic heating for heating mode Off On ON WP091 Dual mode point electric heating 20 0 C 45 0 C 5 0 C WP092 Power OFF for electric heating Off On On WP093 Temporary deactivation of WP091 0 to 40 days 0 days WP094 Type of electric heating None 2 kW 3 kW 4 kW 6 kW 9 kW 6 kW WP101 Dual mode point add ht gen 20 0 C 45 0 C 0 0 C Other WP121 Max compressor starts per hour 3 10 h 3 h 31 Contractor level Contr...

Page 62: ...W block Contact open blocked Contact closed heating mode and DHW mode enabled Zirkomat Zirkomat DHW circulation remote control When input E1 is configured as the DHW circulation remote control output A1 is automatically set to DHW circulation pump and is blocked for further settings When input E1 is closed output A1 is activated for 5 minutes When input E1 has switched off and 30 minutes have elap...

Page 63: ...MS configuration Add ht gn Additional heat generator Is set if demand is issued to additional heat generator Only possible with configurations 33 and 34 Note The electric booster heater is deactivated for configurations 33 and 34 as long as compressor and additional heat generator are operational Compressor ON Compressor active Is set if the compressor is active WP010 WP016 ON For setting the set ...

Page 64: ...ed at a defined point WP028 For selecting whether an activation command via smart grid switches on just the compressor or the compressor plus the electric heating WP031 If multiple heat sources are controlled in one heating system with a cascade module addresses must be allocated to the heat sources WP053 For setting the minimum outside temperature for active cooling mode WP054 For setting the min...

Page 65: ... be extended with mixer circuits can be extended with solar circuit active cooling possible 33 Separating cylinder CGB 2 one heating circuit downstream of low loss header DHW heating can be extended with mixer circuits can be extended with solar circuit 34 TOB stratification cylinder BSH BSP W BSP W SL DHW heating can be extended with mixer circuits can be extended with solar circuit 51 0 10 V act...

Page 66: ... electrical data can be found in the Hydraulic System Solutions technical guide BWL 1S B Split air water heat pump Cylinder in series One heating circuit DHW heating Active cooling possible in conjunction with an additional 3 way diverter valve for cooling Cylinder in series Heating circuit A 3 way diverter valve for central heating DHW and a feed heating circuit pump are integrated into the indoo...

Page 67: ...lS Important information In this schematic diagram shut off valves air vent valves and safety equipment are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hydraulic and electrical data can be found in the Hydraulic System Solutions technical guide BWL 1S B Split air water heat pump Cylinder in series Extension circuit...

Page 68: ...lic System Solutions technical guide BWL 1S B Split air water heat pump Cylinder in series One heating circuit DHW heating Solar DHW cylinder Solar circuit extension with SM1 Active cooling possible System configuration 05 Cylinder in series Heating circuit CTS Solar circuit Solar DHW cylinder SCylS SColS SCP FT RTS A 3 way diverter valve for heating DHW and a feed heating circuit pump are integra...

Page 69: ...gram shut off valves air vent valves and safety equipment are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hydraulic and electrical data can be found in the Hydraulic System Solutions technical guide BWL 1S B Split air water heat pump Separating cylinder One heating circuit DHW heating Please note Header temperature...

Page 70: ...ptions BVG Lambda BWL 1S B Split air water heat pump BSP W BVG Lambda Extension circuit with mixer with MM Solar circuit extension with SM1 DHW heating Important information In this schematic diagram shut off valves air vent valves and safety equipment are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hydraulic and e...

Page 71: ...are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hydraulic and electrical data can be found in the Hydraulic System Solutions technical guide Circuit with mixer MCP MaxTh FS MM A 3 way diverter valve for central heating DHW and a feed heating circuit pump are integrated into the indoor module Indoor module Outdoor m...

Page 72: ...ambda BWL 1S B Split air water heat pump BSP W BVG Lambda Extension circuit with mixer with MM Solar circuit extension with SM1 DHW heating Active cooling possible Important information In this schematic diagram shut off valves air vent valves and safety equipment are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hyd...

Page 73: ...e should be provided for each individual system in line with the applicable standards and regulations Hydraulic and electrical data can be found in the Hydraulic System Solutions technical guide SColS SCP FT RTS Separating cylinder Heating circuit HCP Circuit with mixer MCP MaxTh FS MM A 3 way diverter valve for central heating DHW and a feed heating circuit pump are integrated into the indoor mod...

Page 74: ...r separating cylinder HTS Extension options CGB 2 BWL 1S B Split air water heat pump Separating cylinder Solar DHW cylinder CGB 2 Heating circuit Extension circuit with mixer with MM Solar circuit extension with SM1 DHW heating Alternatively dual mode operation only is possible Important information In this schematic diagram shut off valves air vent valves and safety equipment are not fully repres...

Page 75: ...lves and safety equipment are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hydraulic and electrical data can be found in the Hydraulic System Solutions technical guide Circuit with mixer MCP MaxTh FS MM A 3 way diverter valve for central heating DHW and a feed heating circuit pump are integrated into the indoor modu...

Page 76: ...g mode 4 2 V U 7 0 V 0 100 compressor heating mode 7 2 V U 10 0 V 0 100 electric heating heating mode Notes Connect the outside temperature sensor OTS Activate the electric heating WP090 Program WP003 for defrost in defrost mode output A1 is switched in order to notify the BMS regarding defrost mode External demand control by building management system BMS DHW heating mode for system configuration...

Page 77: ... off valves air vent valves and safety equipment are not fully represented These should be provided for each individual system in line with the applicable standards and regulations Hydraulic and electrical data can be found in the Hydraulic System Solutions technical guide DHW heating mode for system configuration 52 DHW mode can be suppressed for system configuration 52 by removing the cylinder s...

Page 78: ...DHW temperature HC pressure Heating circuit pressure ZHP speed PWM switching of the feed heating circuit pump ZHP Flow rate Heating circuit flow rate Notes Before a parameter reset make a note of the settings and statistical data After the parameter reset carry out a sensor calibration The sensor calibration function serves to balance out any deviations in the measurements from the flow and return...

Page 79: ...Compressor freq Fan speed Fan speed T_evap Evaporator temp T_hot gas Hot gas temperature T_condens Condenser temperature T_supply air Supply air temperature 31 Contractor level In the fault history the last 20 fault messages can be called up 31 8 Fault history Main menu Submenu Menu item Chapter Password for contractor level Contractor back Parameter reset Special IDU service ODU service Fault his...

Page 80: ...ractor ODU service Fault history Delete fault history Acknowledge fault back Acknowledge fault 31 Contractor level If the Delete fault history parameter is performed all data is deleted 31 9 Deleting the fault history Main menu Submenu Menu item Chapter Password for contractor level No Yes No Yes Contractor Special IDU service ODU service Fault history Delete fault history back Reset fault history...

Page 81: ...l areas 70 70 Measuring location outside the residence affected but close by 0 5 m in front of the open window that is most affected The sound power level of heat pumps is calculated in accordance with DIN EN 12102 It enables comparisons to be made independently of surroundings direction and distance Avoid siting the heat pump directly by or below windows of noise sensitive rooms e g bedrooms Inst...

Page 82: ...al heating output for the standard design point is approx 5 6 kW Since a 4 kW heater rod is also installed the maximum available heating output is 9 6 kW at an outside temperature of 16 C This results in a dual mode point of approx 4 C The closer the dual mode point gets to the standard outside temperature the lower the proportion of booster heating As a rule the booster heater is responsible for ...

Page 83: ... 4 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 07 el Leistungsaufnahme bei Vorlauf 35 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heating output kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 34 Heating outp...

Page 84: ...3 4 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 07 el Leistungsaufnahme bei Vorlauf 45 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 35 Heating outpu...

Page 85: ...3 4 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 07 el Leistungsaufnahme bei Vorlauf 55 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 36 Heating outpu...

Page 86: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 10 el Leistungsaufnahme bei Vorlauf 35 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 37 Heating o...

Page 87: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 10 el Leistungsaufnahme bei Vorlauf 45 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 38 Heating o...

Page 88: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 10 el Leistungsaufnahme bei Vorlauf 55 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 39 Heating o...

Page 89: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 14 el Leistungsaufnahme bei Vorlauf 35 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 40 Heating o...

Page 90: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 14 el Leistungsaufnahme bei Vorlauf 45 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 41 Heating o...

Page 91: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1S 14 el Leistungsaufnahme bei Vorlauf 55 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 42 Heating o...

Page 92: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1SB 10 el Leistungsaufnahme bei Vorlauf 35 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 43 Heating ...

Page 93: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1SB 10 el Leistungsaufnahme bei Vorlauf 45 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 44 Heating ...

Page 94: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1SB 10 el Leistungsaufnahme bei Vorlauf 55 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 45 Heating ...

Page 95: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1SB 14 el Leistungsaufnahme bei Vorlauf 35 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 46 Heating ...

Page 96: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1SB 14 el Leistungsaufnahme bei Vorlauf 45 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 47 Heating ...

Page 97: ... 5 6 25 20 15 10 5 0 5 10 15 20 25 30 35 40 BWL 1SB 14 el Leistungsaufnahme bei Vorlauf 55 minimal nominal maximal Heating output to EN 14511 Electric power consumption in steady state COP to EN 14511 Heizleistung kW Air inlet temperature C el power consumption kW Air inlet temperature C Air inlet temperature C COP minimal nominal maximal minimal nominal maximal minimal nominal maximal 48 Heating ...

Page 98: ...l head BWL 1S B 07 BWL 1S B 10 400V BWL 1S B 14 400V Water flow rate nominal 5K l min 19 7 28 8 34 1 Residual head mbar 490 550 460 Residual head nominal water flow rate BWL 1S B 14 BWL 1S B 07 BWL 1S B 10 BWL 1S B 10 230 V BWL 1S B 14 230 V Water flow rate nominal 5K l min 31 8 40 4 Residual head mbar 530 340 ...

Page 99: ...ture operating limits air cooling mode min max C 10 45 10 45 10 45 Heating water Minimum flow rate l min 15 21 25 Water flow rate nominal 5K l min 19 7 28 8 34 1 Water flow rate maximum 4K l min 24 7 36 42 7 Heat pump pressure drop at nominal water flow rate mbar 78 121 141 Residual head at nominal water flow rate mbar 490 550 460 Maximum operating pressure bar 3 Heat source Air flow rate at nomin...

Page 100: ...flow rate l min 21 25 Water flow rate nominal 5K l min 31 8 40 4 Water flow rate maximum 4K l min 39 8 50 6 Heat pump pressure drop at nominal water flow rate mbar 126 175 Residual head at nominal water flow rate mbar 530 340 Maximum operating pressure bar 3 Heat source Air flow rate at nominal operating point 2 m h 3800 3800 Connections Connection heating flow return DHW flow 28x1 Connection refr...

Page 101: ...5461 58 1337 93 418 11 29198 24 5225 59 1289 94 406 10 27648 25 5000 60 1244 95 393 9 26189 26 4786 61 1200 96 382 8 24816 27 4582 62 1158 97 371 7 23523 28 4388 63 1117 98 360 6 22305 29 4204 64 1078 99 349 5 21157 30 4028 65 1041 100 339 4 20075 31 3860 66 1005 101 330 3 19054 32 3701 67 971 102 320 2 18091 33 3549 68 938 103 311 1 17183 34 3403 69 906 104 302 0 16325 35 3265 70 876 105 294 1 15...

Page 102: ...d installed in line with the installation instructions Have all electrical and hydraulic connections been completed in full Are all slides and shut off valves in the heating water circuit open Have all circuits been flushed and thoroughly vented Is condensate drainage guaranteed Do the power feeds to the compressor electric heating and control system have omnipolar fuse protection Before commissio...

Page 103: ...global warming potential GWP100 of 2088 This means that 1 kg of R410A equates to 2 088 t of CO2 Which Wolf split heat pumps require a leak test is detailed in the following table BWL 1S B 07 BWL 1S B 10 BWL 1S B 14 Refrigerant weight in delivered condition 2 15 kg 4 49 t CO2 eq 2 95 kg 6 16 t CO2 eq 2 95 kg 6 16 t CO2 eq Refrigerant per m of pipe 60 g R410A m pipe length corresponds to 125 kg CO2 ...

Page 104: ... only be disposed of by certified contractors refrigeration engineers in accordance with EC 842 2006 303 2008 and 517 2014 The following data must be entered f f Details of all repair and maintenance work f f Type of refrigerant filled into the system new re used or recycled and the quantity of refrigerant removed from the system f f If an analysis of a re used refrigerant is available the results...

Page 105: ...t pump type ___________________________________________ Serial number _________________________________________________ Year of construction ____________________________________________ Commissioning ________________________________________________ Refrigerant weight ______________________________________________ The above data can be found on the type plate of the appliance Type and properties of...

Page 106: ...ate Protection Ordinance in conjunction with regulation EC no 303 2008 Category I have been carried out on the heat pump s refrigerant circuit Date Results of maintenance Quantity of refrigerant removed added in kg Leak test conducted Name of specialist company certified engineer Signature of expert 53 System log book ...

Page 107: ...f specialist company certified engineer Signature of expert 53 System log book The following maintenance work and regulatory leak tests to para 5 section 3 of the Chemicals Climate Protection Ordinance in conjunction with regulation EC no 303 2008 Category I have been carried out on the heat pump s refrigerant circuit ...

Page 108: ...Cleaning BWL 1S B Completed Clean dirt filter in heating circuit x Clean heat pump casing and interior x Clean fins on evaporator of air heat pump x Clean condensate pan x Clean condensate drain x Function and visual checks Visual check on all water carrying parts for leaks x Check settings for heating control unit and switching times x Check heating circuit pressure and function of heating circui...

Page 109: ...e BWL 1S B 54 Maintenance cleaning Install a sludge separator in the heating return This ensures that neither particles nor dirt can get into the plate heat exchanger condenser of the heat pump Condenser blockages and any resulting high pressure malfunctions are thereby prevented Cleaning the dirt trap sludge separator The appliance can be cleaned with a damp cloth and commercially available deter...

Page 110: ...k symbol symbol lock indicates that the current fault message has caused a lockout of the heat pump The duration of the current message is also shown Faults must only be repaired by qualified personnel If a fault message is acknowledged several times without the cause of the problem being repaired this can lead to component or system damage The control unit automatically acknowledges faults such a...

Page 111: ...appliance type connector 52 Max cylinder heating time The maximum cylinder heat time is longer than permitted Cylinder sensor T_DHW Check position and insert correctly if necessary Check parameter WP022 and adjust if necessary Descale cylinder 78 Header sensor fault Header temperature outside permissible range 0 95 C Cable to sensor is faulty Check cable and plug in connection Sensor is not correc...

Page 112: ...ost energy in heating circuit too low during defrosting Check heating circuit flow rate and electric heating if necessary briefly reduce the heating circuit volume 124 AWO pressure sensor Pressure outside permissible range Check condenser temperature Cable to sensor is faulty Check cable and plug in connection 125 Boiler sensor AWO Flow temperature AWO T_boiler outside permissible range Check flow...

Page 113: ...odule HK 1 Heating circuit 1 HCP Heating circuit pump HP Heating period HTG Heating IDU Indoor module SPF Seasonal performance factor L0 230 V mains supply for outdoor unit Ni Bus connection for outdoor module BWL 1s 07 N0 230 V mains supply for outdoor unit MaxTh Maximum thermostat MC 1 Mixer circuit 1 MCP Mixer circuit pump MM Mixer motor or mixer module ODU Outdoor module PWM PWM switching of t...

Page 114: ...e space heater is assembled installed or maintained See installation instruction See installation instruction See installation instruction See installation instruction Rated heat output under colder climate condi tions Prated kW 7 11 11 7 Rated heat output under warmer climate con ditions Prated kW 7 10 13 7 Seasonal space heating energy efficiency under colder climate conditions ηs 139 142 136 13...

Page 115: ... installed or maintained See installation instruction See installation instruction See installation instruction See installation instruction Rated heat output under colder climate condi tions Prated kW 11 11 Rated heat output under warmer climate con ditions Prated kW 10 10 12 13 Seasonal space heating energy efficiency under colder climate conditions ηs 142 136 Seasonal space heating energy effic...

Page 116: ...the space heater is assembled installed or maintained See installation instruction See installation instruction See installation instruction See installation instruction Rated heat output under colder climate condi tions Prated kW 7 12 11 7 Rated heat output under warmer climate con ditions Prated kW 7 9 11 7 Seasonal space heating energy efficiency under colder climate conditions ηs 105 105 112 1...

Page 117: ...d installed or maintained See installation instruction See installation instruction See installation instruction See installation instruction Rated heat output under colder climate condi tions Prated kW 12 11 Rated heat output under warmer climate con ditions Prated kW 10 9 13 11 Seasonal space heating energy efficiency under colder climate conditions ηs 105 112 Seasonal space heating energy effic...

Page 118: ...3 93 Tj 7 C COPd 4 12 5 95 4 30 6 21 4 77 6 68 4 10 5 34 4 29 5 51 Tj 12 C COPd 5 31 7 21 5 30 7 36 5 20 8 58 5 23 7 32 4 95 5 27 Tj bivalent temperature COPd 2 60 2 96 2 51 3 08 2 51 2 86 1 85 2 84 2 01 2 82 Tj operation limit temperature COPd 1 85 2 66 1 86 2 81 1 86 2 86 1 38 2 10 1 38 2 04 For air to water heat pumps Tj 15 C if TOL 20 C COPd For air to water heat pumps Operation limit temperat...

Page 119: ...t described above conforms to the requirements specified in the following documents DIN EN 349 DIN EN 378 DIN EN ISO 12100 DIN EN 14511 DIN EN 60335 1 10 2012 DIN EN 60335 2 40 01 2014 DIN EN 60529 DIN EN 60730 1 DIN EN 55014 1 05 2010 DIN EN 55014 2 06 2009 In accordance with the following Directives 2006 42 EG Machinery Directive 2006 95 EC Low Voltage Directive 2004 108 EC EMC Directive 2009 12...

Page 120: ...Wolf GmbH Postfach 1380 D 84048 Mainburg Tel 49 8751 74 0 Fax 49 8751 741600 Internet www wolf heiztechnik de BWL 1S B installation and operating instructions Subject to technical modifications ...

Reviews:

No comments