Eco Heating Systems CD+100 Installation, User And Servicing Instructions Download Page 31

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E93.1001EN.C Manual CD

XAMPLE

ONCENTRIC

C33

(

ROOF

MOUNTED

)

Calculation example with given lengths: checking resistance

Water heater type:

oncent

Diameter: 80/125 mm.

Number

Pa total

Straight tube m

total

132

Bend

90°

Bend

45°

Concentric terminal

roof

Total resistance flue gas outlet and air supply

(concentric):

246

The total resistance is less than 200 Pa. This flue gas / air supply system is
functional.
Part number concentric roof terminal: E04.018.015 – Inox
E04.018.018 - PP

XAMPLE

ONCENTRIC SYSTEM

ALL OUTLET

C13

(

WALL

MOUNTED

)

Calculation example with given lengths: checking resistance

The total resistance is less than 200 Pa. This flue gas / air supply system
is functional.
Part number concentric wall terminal: E04.018.019 - Inox

Water heater type:

oncent

Diameter: 80/125 mm

Number

Pa total

Straight tube m

total

108

Bend

90°

Concentric terminal

wall

Total resistance flue gas outlet and air supply

(concentric):

143

Summary of Contents for CD+100

Page 1: ...CD 80 100 120 150 180 Wall hung high efficiency water heater Installation user and service instructions BASE VERSION E93 1001EN C...

Page 2: ......

Page 3: ...itioning 22 FLUE GAS AND AIR SUPPLY SYSTEM 23 6 1 GENERAL 23 6 2 HEIGHTS ON ROOF 23 6 3 WATER HEATER CATEGORIES TYPES OF FLUEGAS SYSTEMS 24 6 4 C63 CERTIFIED 25 6 5 AIR SUPPLY 26 Combustion air qualit...

Page 4: ...wo CD 100 water heaters with two EWD450 tanks 53 Three CD 180 water heaters with five EWD750 tanks 54 USER INTERFACE 56 10 1 CONTROL PANEL MENU STRUCTURE 56 10 2 CONTROL PANEL DISPLAY AND KEYS 58 10 3...

Page 5: ...ings 99 Adjustment actions general scheme 100 14 2 ADJUSTING IN CASE OF A NEW WATER HEATER OR AFTER MAINTENANCE CASE A 101 General remark 101 Checking and adjusting at maximum load 101 Checking and ad...

Page 6: ...n these changes are executed without approval the water heater certification is invalid Commissioning maintenance and repair must be done by a skilled installer engineer according to all applicable st...

Page 7: ...tion of water heaters and tanks pump selection is very important with respect to the required flow velocity EHS has done the calculations and provides a number of tables in which you can find the righ...

Page 8: ...plied parts will become invalid Minimum water pressure 1 bar Fuel used should have sulphur rates that comply with the next values a maximum annual peak over a short period of time of 150 mg m3 and an...

Page 9: ...rculation C Circulation return 1 Pressure relief valve manda tory in case service water pres sure is too high 2 Inlet combination with valve mandatory 3 Apply filter if necessary recom mended 4 A suit...

Page 10: ...peration and heat demand indication from each water heater Anti Legionnaires disease function 0 10 VDC remote flow temperature set point control NB 0 10 VDC remote burner input control is NOT possible...

Page 11: ...8 80 2 18 6 99 7 34 7 120 36 8 150 48 8 180 Nom output 80 60 C kW 14 0 71 2 16 5 88 4 24 7 106 32 6 132 43 3 160 Nom output 50 30 C kW 15 2 77 5 18 0 96 2 27 2 116 35 5 144 47 3 175 Nom output 37 30 C...

Page 12: ...the load profile might be higher Type water heater CD 80 CD 100 CD 120 CD 150 CD 180 EMISSION EN437 Nominal values at min max load CO2 flue gas min max 3 G25 3 G20 8 7 9 0 8 7 9 0 8 7 9 0 8 7 9 0 8 7...

Page 13: ...concentric CD 80 CD 100 CD 120 CD 80 CD 100 CD 120 FG flue gas 80 100 80 100 AI air inlet 80 100 125 150 I cold wa ter inlet R 1 swivel R 2 swivel R 1 swivel R 2 swivel O hot wa ter outlet R 1 swivel...

Page 14: ...IN PIPE CONCENTRIC Connections mm twin pipe concentric CD 150 180 CD 150 180 FG flue gas 130 100 AI air inlet 130 150 I cold water inlet Rp 2 swivel Rp 2 swivel O hot water outlet Rp 2 swivel Rp 2 swi...

Page 15: ...ks EWD300 EWD450 EWD750 For the connections marked A H see 9 3 2 on page 43 44 EWD300 EWD450 1750 604 60 257 257 56 92 56 3 6 7 0 6 5 734 C A B D F H E 190 128 7 0 6 5 45 128 128 C A B 63 63 121 60 29...

Page 16: ...3 4 ERP specifications Ecohs tanks Type EWD300 EWD450 EWD750 Energy efficiency class C D n a Standing loss S Watt 96 3 114 2 142 08 Volume V litre 305 438 750 950 7 0 6 5 158 10 1 2 8 47 92 47 338 18...

Page 17: ...E93 1001EN C Manual CD 17 3 5 Cascade frames CD 80 CD 180 Frames for two three and four water heaters CD 80 up to CD 180...

Page 18: ...0 990 2 1015 133 160 177 314 Rp 2 Rp 2 R 605 n v t n v t 990 990 1 510 133 160 177 314 Rp 2 Rp 2 R n v t n v t n v t 990 990 CD 80 4 1980 133 175 177 310 Rp 1 Rp 1 R 590 1080 1570 990 990 3 1520 133 1...

Page 19: ...L 500mm E04 018 054 E04 018 060 E04 018 037 Flue gas pipe stainless steel L 250mm E04 018 053 E04 018 059 E04 018 038 Flue gas pipe PP L 1000mm 410085502 410085482 410070242 Flue gas pipe PP L 500mm...

Page 20: ...E04 018 087 E04 018 087 Roof deck pipe clamps E04 018 030 E04 018 012 E04 018 012 Seal ring gummi Inner flue gas pipe E07 004 023 E07 004 024 E07 004 024 Outer air pipe E07 004 026 E07 004 027 E07 00...

Page 21: ...to the water heater location Both the air supply and the flue gas tubes must be connected to the outside wall and or the outside roof The installation area must be dry and frost free The water heater...

Page 22: ...orward If necessary adjust the position with the adjusting bolts at the lower rear side of the back panel see drawing When the adjusting bolts aren t sufficient fill the gap behind the bolts to get th...

Page 23: ...20 Before installing read the installation manual s of the supplier of the flue gas and air supply parts in cluded with the parts Manuals for parts supplied by ECO can be found at http burgerhout nl d...

Page 24: ...ssure zone a combined wall outlet e g When used with separated air supply inlet and flue gas outlet the outlets have to be within a square of 100 cm for water heaters between 70 to 1000 kW See chapter...

Page 25: ...eq PP EN 14471 T120 P1 W 1 O 30 I of E C E L min req SS EN 1856 1 T120 P1 W 1 L20040 O 40 C53 Closed Air supply from outside Separate air supply duct Separate flue gas discharge duct Air supply inlet...

Page 26: ...for these multiple water heater installations More information about these common fluegas systems can be found at the cascade installation manual You can find the cascade manual at the website http ww...

Page 27: ...CD 80 CD 100 CD 120 CD 150 CD 180 straight tube m 80 7 5 100 3 0 3 5 4 0 130 0 75 0 8 1 1 1 2 2 0 150 0 3 0 4 0 6 1 2 45 bend 80 3 5 100 1 5 1 7 2 130 0 4 0 4 0 5 0 6 1 0 150 0 15 0 2 0 3 0 6 90 bend...

Page 28: ...al 9 6 54 Bend 90 2 6 12 Flue outlet conical 1 0 9 0 9 Total resistance flue gas outlet 66 9 Air supply Diameter 130 mm Number Pa Pa total Straight tube m total 8 2 16 Bend 90 2 2 4 Air inlet H D 1 0...

Page 29: ...12 0 23 0 16 5 40 5 25 5 Part no concentric roof terminal E04 018 015 E04 018 001 E04 018 074 Part no adaptor conc twin E04 010 161 E04 018 033 Roof terminal Included Example A max pipe length water...

Page 30: ...150 CD 180 Diameter air inlet mm 80 100 100 130 130 Diameter flue outlet mm 80 100 100 130 130 Diam roof terminal mm 80 100 100 130 130 Maximum pipe length m total outlet length 21 5 46 5 27 5 49 5 30...

Page 31: ...is flue gas air supply system is functional Part number concentric roof terminal E04 018 015 Inox E04 018 018 PP EXAMPLE E CONCENTRIC SYSTEM WALL OUTLET C13 WALL MOUNTED Calculation example with given...

Page 32: ...7 5 Part no conc roof terminal Inox E04 018 015 E04 018 001 Part no conc roof terminal PP E04 018 018 410084863 Example E C13 water heater type CD 80 CD 100 CD 120 CD 150 CD 180 Diameter concentric p...

Page 33: ...t mm 80 80 100 100 130 Diameter air inlet flue outlet mm 80 80 100 100 130 Diameter roof terminal mm 80 80 100 100 130 Maximum pipe length m inlet outlet together 14 38 19 42 23 Part no roof terminal...

Page 34: ...water heater 1 2 DO NOT USE Do not connect any cable to these connections 3 4 TANK SENSOR This external tank sensor measures the water temperature at the system side The sensor must be mounted on the...

Page 35: ...so be used for the switching of a pump with a separate control input connection PARAMETER A parameter change is needed 23 24 BURNER DEMAND OR PUMP ON OFF This contact is N O normally open When the uni...

Page 36: ...8 7 6 5 4 3 2 1 CN10 CN11 2 3 4 5 6 7 8 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 out Gnd out Gnd 1 9 17 18 18 17 9 1 10 11 12 13 14 15 16 8 7 6 5 4 3 2 0 10 VD...

Page 37: ...ock Out NO Flame on NO Lock Out NO Flame on NO Pump 3 N Pump 3 L Gas Valve N Gas Valve L Pump 1 L Pump 1 N Pump 2 3 way L NO Pump 2 3 way N open 3 way L NC L N MAINS 230 VAC BURNER BURNING 34 33 32 27...

Page 38: ...water hardness within acceptable level 8 2 Frost protection The water heater has a built in frost protection that is automatically activating the pump when the water heater return water temperature dr...

Page 39: ...skipping the blocking procedures that apply at normal operation Again F16 dis play FlowReturn dt fault NB All values of this flow monitoring have been programmed by EHS in order to get the best perfor...

Page 40: ...nciple components and connections Position tank sensor on ECO tanks Tank sensor see 9 2 1 on page 42 Example of a combination of one water heater and one tank Extra explanation 1 Pressure relief valve...

Page 41: ...outlets The temperature of this tank will be assumed to be representative for all provided that the installation design is correct In the inlet return connection of the water heater no check valve is...

Page 42: ...hen an RCW remote wall controller is connected to the wire terminal 13 and 14 the setting of the tank temperature can be done with this controller Open Therm bus also the night or weekend reduction of...

Page 43: ...nection C labelled cold in opposite to A and B which were used for connecting the water heater For the application of inlet combination control valves etc all appli cable regulations should be met Con...

Page 44: ...tem Use only plastic parts with the condensate drain Metal lines are not allowed Blockage of this drain might damage the water heater The drain connection is correct when the condensate can be seen fl...

Page 45: ...he codes pipe diameters can be found in the tables per water heater type for a number of possible water heater tank combinations All tables and examples have been designed for maximally eight water he...

Page 46: ...the hot water as well as the cold water connections PIPE CODES TANKS SIDE General Pipe dimensions at the tanks side for a given cascade are equal for all tanks so tanks don t need to be numbered Pipe...

Page 47: ...n water heaters in a cascade D1 D2 D3 D4 D5 D6 D 7 CD 80 54 1 5 67 1 9 80 2 1 80 2 1 93 2 3 106 2 5 106 2 5 CD 100 54 1 5 67 1 9 80 2 1 93 2 3 106 2 5 106 2 5 133 2 8 CD 120 54 1 5 80 2 1 93 2 3 106 2...

Page 48: ...67 1 9 80 2 1 80 2 1 93 2 3 106 2 5 106 2 5 3 tanks 35 1 3 42 1 4 54 1 5 67 1 9 67 1 9 80 2 1 80 2 1 93 2 3 4 tanks 28 1 2 42 1 4 54 1 5 54 1 5 67 1 9 67 1 9 67 1 9 80 2 1 5 tanks 28 1 2 35 1 3 42 1...

Page 49: ...nce and will therefore cause a necessary reduction of straight length The table contains a number of commonly used components and their equivalent length Copper pipe diameter D Maximum straight length...

Page 50: ...1 2 3 4 5 6 7 8 1 tank x x x x x x 2 tanks x x x x 3 tanks x 4 tanks 5 tanks P1 6 tanks 7 tanks 8 tanks CD 100 number of cascaded water heaters 1 2 3 4 5 6 7 8 1 tank x x x x x x 2 tanks x x x x 3 tan...

Page 51: ...nd all delivered parts will become invalid PUMP MAXIMUM ELECTRICAL POWER General The inrush current of a conventional pump is approximately 2 x its nominal current The maximum switch current of the re...

Page 52: ...eater 1 3 Codes for tank connections Pipes between the connections D Values from the water heater table C 9 5 1 Tank connections DT entrance and exit The values are found in the tank table D 9 5 2 ONE...

Page 53: ...at least 54 1 5 mm mm tables A and B The pipes D must measure 67 1 9 mm mm table C Tank connections From table D 2nd block CD 100 for 2 tanks DT 54 1 5 mm mm So for this system pipes sized at least 5...

Page 54: ...2 D see picture return pipes starting at water heater last water heater 3 D1 D2 D see picture Pipe sizes water heater side From tables A B and C CD 180 All pipes D1 in the picture must measure at leas...

Page 55: ...Length of the connecting pipes water heaters tanks From table E The maximum total length of hot and cold water connection pipes between the water heater cascade and the tanks using 106 2 5 mm mm is 36...

Page 56: ...shows 2x20 digit mes sage for three seconds Message can be set in parame ters example Company name City Country press Display shows for three seconds Heater type Time date and day example Z FG 550 13...

Page 57: ...water supply from the DHW appliance to the tank is set here PROGRAM menu In this menu one can set the DHW and Anti Legionnella program OPERATING HISTORY menu Shows burning hours DHW etc FAULT HISTORY...

Page 58: ...ESET and ENTER button when programming Connector for connecting computer cable Buttons can be pushed to open menu hold for one second Buttons to toggle through measured temperatures These are also use...

Page 59: ...d off only text in the display during this status N o d e m a n d No heat demand signal coming from the room thermostat and tank sensor open S t a n d b y Room thermostat tank sensor thermostat detect...

Page 60: ...detect this sensor S h o r t e d Shown when sensor wires or sensor itself is shorted SCREEN 4 d T F l o w R e t u r n 1 2 3 9 C Temp difference between internal flow return d T F l u e R e t u r n 1...

Page 61: ...water heater is changed according to the set priority change time then that water heater s address will be shown first in the row of numbers Example 1 3 4 5 0 1 2 There are six water heaters present a...

Page 62: ...ice mode 26 The burner is firing at 26 75 0 C Max allowable water temp during service 60 0 C Actual measured water temp when P5BJ active Press SERVICE to exit The unit will go to the operating screen...

Page 63: ...ssed briefly again the heater will fire at 50 firing rate In this state the display shows F l u e s e r v i c e m o d e P o w e r 5 0 When the button is pressed briefly again the heater will fire at m...

Page 64: ...er heater at the control panel see the following sections HINT First programme all changes planned then only terminate programming mode by pressing MENU or ENTER and NO or YES Reactivate the water hea...

Page 65: ...can be set with the water heater these are DHW program Anti Legionnaires disease pasteurisation program START PROGRAMMING Three programmed periods each day can be set period 1 2 and 3 During this peri...

Page 66: ...ew seconds and return to base menu Press MENU to exit The water heater will reset and go to the oper ating screen Press for next SCREEN Copy programmed day for DHW C o p y f r o m D H W M o n C o p y...

Page 67: ...alues that can be set at the bottom line The blinking value can be changed Press to change the selected blinking value Press ENTER for confirmation screen when all settings are done Confirmation scree...

Page 68: ...2 h r s C h T o t 1 0 0 0 0 0 0 h r s D h w T o t 1 0 0 0 0 0 0 Top line Total burning hours for heating Bottom line Total burning hours for domestic hot water SCREEN 3 h r s C h 5 0 1 0 0 0 0 0 0 h r...

Page 69: ...st 10 faults For each fault the dis play blinks between the two screens shown above The top line of the top screen shows the fault number and the bottom line of the top screen shows the date day and t...

Page 70: ...gnition cycles The text will blink once briefly after resetting Operating screen M a i n t e n M o d e Blinking second line What is blinking at the second line before a selection is made is the ac tiv...

Page 71: ...i r m Press to cancel the changes or to confirm the changes Hereafter the water heater returns to the oper ating screen Screen Message after total amount of ignition cycles M a i n t e n M o d e I g n...

Page 72: ...played M a i n t e n M o d e M a i n t e n O f f Press ENTER to confirm the changes Confirmation screen A r e y o u s u r e C a n c e l C o n f i r m Press to cancel the changes or to confirm the chan...

Page 73: ...screen H E A T I N G b o i l e r o f f 1 2 3 4 C 1 2 3 4 C Press MENU Select User lock using and press ENTER User lock screen S e t U s e r l o c k 0 0 The 0 is now blinking selected and can be change...

Page 74: ...gionella hold time 0 off min L e g i o h o l d no 8 P2KI CH interrupt by Legionella 0 yes 1 no L e g i o i n t r no 9 P2LC Regulation temperature offset DHWd C D H d s c O f f 2 yes A P2MN Proportiona...

Page 75: ...ulation 0 Off 1 On Menu A Heating A 2 H E s o f f 1 3 4 C CH supply temperature setting This parameter is the offset of the programmed CH temperature Menu A Heating A 3 H E s P r b 1 3 2 5 C Select th...

Page 76: ...ly temperature of EACH boiler of the total cascade and of the external cascade sensor Menu A Heating A 9 T i m e r C o n t 0 Function to activate external time controller 0 Off 1 On Connect to 13 14 C...

Page 77: ...is the se lected time period for the pasteurisation function of the boiler Menu B Hot water B 8 L e g i o i n t r 0 Pasteurisation function of the boiler This parameter controls if the CH demand can...

Page 78: ...ature of the calorifier tank Menu B Hot water B G D H i d e t g r a d 3 C Function for the indirect hot water supply of the boiler tank This parameter detects an an accelerated hot water de mand when...

Page 79: ...s parameter determines the number of cascaded boilers that are implemented with a common flue system Menu D General D 1 0 1 0 V c o n t r 0 Function for the external control of the boiler by using a 0...

Page 80: ...ater pressure Up to 4 bar a sensor is used up to 6 bar a switch 0 off 1 sensor 2 switch Menu D General D 8 g a s t y p e Function to select the gas type according to EN 437 0 standard 1 G31 2 B P G30...

Page 81: ...F a i l e d b u r n e r s t a r t p u m p o n 9 9 9 5 h r s Reason Water heater is not starting after the programmed starting attempts Display message F11 F a n s p e e d i n c o r r e c t p u m p o...

Page 82: ...s c a d e B l o c k 9 9 9 5 h r s Reason One of the cascaded water heaters causes an error because of a lock out Display message D e l t a D i r e c t b l o c k 9 9 9 5 h r s Reason Temperature diffe...

Page 83: ...MESSAGES The following graphs describe the messages at the water heater display Depending on the selected and activated options for the water heater it is possible that some messages will show up at...

Page 84: ...ater P5BJ Temperature display 1 on display D5 The measured temperature in the operation display 0 not visible 1 visible GAS TYPE SELECTION Settings for gas types natural gas propane or butane propane...

Page 85: ...the pump but directly connect the pump to an external power supply A modulating pump with PWM control the power supply is directly connected to the mains the PWM connection is connected to CN10 contac...

Page 86: ...ature set point Possible settings are 0 0 10V control off 1 0 10V temperature set point control active See also the following graph for the relation between the temperature and the control signal The...

Page 87: ...purposes parameter values in the water heater can deviate The settings of these parameters P5CI P5CJ and P5CD must be programmed according to all applicable anti Legionnaires disease preventing regul...

Page 88: ...shows all measured tempera tures and cascade behaviour during operation and service fault history PARAMETER SETTINGS FOR CASCADE SET UPS Before programming the cascaded water heaters make sure that al...

Page 89: ...ster unit Menu C Cascade C 2 B u s a d d r e s s 0 Function for the cascading of the water heater s This parameter determines the address of the water heater for the total cascading control Master 0 S...

Page 90: ...ill be switched off first see table below To distribute operating hours equally over all water heaters the working sequence of the water heaters will change every two hours Hour Switching ON sequence...

Page 91: ...eck that the screw cap has been loosened at least one twist Make sure that during flushing and filling no water can reach any electrical parts of the water heater 12 3 Third check the water flow Befor...

Page 92: ...ing messages will be shown in the display Display message T 2 T 1 h i g h 9 9 9 5 h r s Reason Temperature difference T2 T1 has exceeded the blocking value as set in the pa rameters Display message d...

Page 93: ...cribes The actual operation If a heat demand is activated The temperature setting The temperature measured When mounting the bottom part of the siphon before commissioning the water heater and or afte...

Page 94: ...ed out is pre sented in table form In 14 2 and 14 3 a description is given of how to proceed in cases A and B respectively In 14 4 finally two main procedures used in the previous sections are describ...

Page 95: ...without front door Gas type G20 G25 3 The CO2 level may never be in the hatched area CD80 CD180 ____________________________________________________________________________ Propane G31 Fan settings m...

Page 96: ...area CD150 ____________________________________________________________________________ CD180 adjust adjust adjust adjust max load min load 4 7 5 0 6 7 7 0 O2 10 6 10 4 9 3 9 1 CO2 O K O K adjust adj...

Page 97: ...________________________________________________________ CD150 ____________________________________________________________________________ CD180 adjust adjust adjust adjust max load min load 5 1 5 4...

Page 98: ...tings when converting to a not mentioned type of gas Pressure adjustment settings LEFT valve water heater type p out pressure at gas valve nat gas G20 G25 3 propane G31 Butane Propane B P G30 G31 CD 1...

Page 99: ...E93 1001EN C Manual CD 99 SETTING SCREWS GAS VALVE S DRAWINGS NOTICE Do NOT mistake the screw marked PILOT for screw 2 Screw 2 is the SMALL screw immediately next to the pilot screw...

Page 100: ...2 turn extra setting at maximum load procedure 1 set burner at maximum load measure CO2 at flue gas outlet use RIGHT screw 2 to adjust according table 1 or figures setting at minimum load continue onl...

Page 101: ...ves see the drawings on page 103 First turn setting screw 2 of the gas valve clockwise until you feel resistance This means that the valve is closed do not try to tighten the screw any further Now tur...

Page 102: ...4 C 1 2 3 4 C Water heater is activated and operates at service mode at 26 minimum See table 4 for pressure settings p out gas valve for the used water heater and gas type Use screw 1 on the left hand...

Page 103: ...r adjusting Decrease CO2 percentage Turn screw 2 right clockwise Increase CO2 percentage Turn screw 2 left counter clockwise The service operation of the water heater will be active for 40 minutes Aft...

Page 104: ...cascade if applicable are operational and so are both recirculation protection if applicable and frost protection To reactivate the water heater switch on the burner by pressing ON OFF for six seconds...

Page 105: ...that connect to the safety device component that generates the fault 16 1 Lock out codes Having a lockout means that the water heater needs a manual reset to start operating again When the water heate...

Page 106: ...the gas valve check the gas valve wiring connections Check if the gas valve settings are correct and adjust if necessary Check if the gas pressure is correct and sufficient Check if the air supply is...

Page 107: ...y Cause Bad gas valve or gas valve settings Corrective action Check and set gas valve settings Cause Bad electrode electrode wiring connection bad ionisation signal Corrective action Check ionisation...

Page 108: ...w R e t u r n d t f a u l t p u m p o n 9 9 9 5 h r s Reason Temperature difference between flow and return exceeds limita tion value or dT block or delta direct block has occurred three times Cause T...

Page 109: ...en there is severe damage to the heat exchanger the combustion product will not be able to transfer all heat to the system water The heat that is not transferred will convert to an increased flue gas...

Page 110: ...on if necessary Check the condensate drain hose between the siphon and the condensate drain point in the external installation Condensate must be able to flow freely Cause The condensate drain hose mu...

Page 111: ...ascade is blocked Corrective action Troubleshoot the fault of the unit in lock out Display message D e l t a D i r e c t b l o c k 9 9 9 5 h r s Reason Temperature difference between flow and return h...

Page 112: ...activated during operation general blocking contacts 7 8 Cause The circuit connected to the general blocking terminals is not closed Corrective action Check all external components that are connected...

Page 113: ...pressure relief valve and expansion vessel installed in the sys tem according to the applicable standards Check if there is an open connection between the unit and the relief valve plus expansion ves...

Page 114: ...ntenance can have warranty consequences Maintenance and inspection of the water heater should be carried out at the following occasions When a number of similar error codes and or lock outs appear At...

Page 115: ...ming from the flue gas pipes Gas supply safeties The gas pipes must be checked for gas tightness Also check if the mounting of these pipes is correct safe and not damaged Any built in safeties should...

Page 116: ...r wall insulation should also be replaced Only use the insulation disk that is supplied by the water heater manufacturer The same procedure must be applied on the insulation and gaskets fitted on the...

Page 117: ...g the burner door make sure that its gas kets and insulation are in excellent shape If any signs of damage or ageing are present these parts must be replaced The burner door must be mounted back on th...

Page 118: ...4 ff hanging level 22 ff heat exchanger 115 ff ignition 36 115 inspection maintenance 115 installation of the CD 40 ff Legionnaires disease 87 maintenance 114 master 42 max cooling time 84 monitor scr...

Page 119: ......

Page 120: ...ibutor Eco Heating Systems Groningen BV contact P O Box 5145 9700 GC Groningen The Netherlands visit Rigaweg 10 9723 TH Groningen The Netherlands T 31 50 5470470 F 31 50 5470498 E sales ecohs nl I www...

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