Eco Hometec EC 25 COMPACT Technical Information

eco hometec Variable Controlled Output (VCO) Solar Compatible jjjjj Condensing Boilers EC 25 COMPACT IINNSSTTAALLLLAATTIIOO

9. Technical Information. Table 1 Dimensions & Connections Product Identification Number CE ~ 0063 AT3070 Dimensions (H x W x D) 600mm x 360m

Table 4 Hot Water Specifications Model EC25S Maximum Rated Input kW 28 Modulating Output kW 8-28 Hot Water Flow rates at ∆τ 30K (S type) L/min

Figure 1 Component Locations Page 12 ECO HOMETEC (UK) LTD.

Table 7 Component List Pos. Description Manufacturer Article code 1 Heat exchanger Coopra N 00 S 04 00 00 0009 2 Hot tap water boiler Coopra

Follow the unpacking instructions on the packaging. Take the handbook out of the plastic packaging around the boiler. 10.3 Check the type plate Ch

12. Operation A key component of the boiler is the premixing gas burner, which is capable of producing a Variable Controlled Output (32% to 100% rat

requirements thus increasing the number of possible suitable locations. The EC25 Compact models may be installed on the inner face of an external wal

Figure 3 Minimum Clearances 14.4 Checks Before Siting Before commencing to install this appliance ensure the design specification complies with

Figure 6 Overall Dimensions 14.7 Mounting the support bracket For mounting the support bracket on a brick wall of sufficient thickness, use the sc

Use an 8 mm dia. concrete drill to bore a hole in the wall to a sufficient depth. Align the hole (10) in the support bracket with the hole in the wall

eco hometec Unit 11E Carcroft Enterprise Park Carcroft Doncaster DN6 8DD Tel. 01302 722266 Fax. 01302 728634 e.mail. sal

Figure 8 Concentric Flue Hold the appliance upright against the wall at approximately. 5 cm above the place where it will be mounted. Press the

Figure 9 Flue Design Boiler output in relation to available flue Palower outputs = more Pa and longer flue lengths 05010015020025030035040045050025

Figure 10 Thermal Lift Thermal lift when flue gas temp 80C and outside temp 10C02040608010012014016018004812162024283236404448Flue lengths ~ metre sUn

For installations requiring greater flue lengths - please contact the eco hometec technical department for advise. The flue should terminate with a s

Note: two 450 may be used to form a swan neck returning the flue pipe back to the wall for clipping. Route the pipe to the desired location and termin

Figure 13 Vertical Flues Figure 14 Vertical Terminals EC 25 Compact Installation/User Manual page 25

Concentric vertical flue fittings are available from eco hometec. Concentric flue components have push together spigot and socket joints. The i

15.7 Terminal Positions Figure 17 Fan Flued Terminal Positions. Table 11. Flue Terminal Positions. Terminal Positions Min.Distance A: Directl

16. Gas Supply The boiler is set for use with either natural gas or LPG. 16.1 Gas Supply Pipe-work from the meter to the boiler MUST be of an adeq

Position ventilation grilles to avoid the risk of accidental obstruction by blocking or flooding. BS 5540.2 Table 12 Ventilation Vent Position Int

Contents 1. Safety Considerations ...6 2. Symbols...6 2.1 Gas Safety...

18. Hydraulic Requirements  The boilers are intended to be used in conjunction with FULLY PUMPED, SEALED systems subject to the requirements below.

The central heating system should be in accordance with the recommendations given in BS. 6798 and BS. 5449. 18.2 Condensate Drain  The condense di

20. Heating Control Options The low voltage terminal strip can be used to connect the following. Hot water cylinder sensor. External temperature se

This temperature sensor must be an NTC with a resistance of 12 kΩ at 25 °C (see also the list of accessories). Strip approximately 5 mm of the insul

Flush the system with clean water until the discharge runs clear. Make good final connections to boiler. 21.6 Filling and Venting the System Using

Make sure there is sufficient heat removal by turning on the central heating system. Activate the chimney sweeper function (See Section 24. The bur

23.2 Flue System Check In order to examine the flue pipe sealing, with the boiler running, it is essential that an O2 or CO2 reading is taken from the

switches back to low speed. When the heating demand is removed, the pump continues to run for the pre-set overrun time, at the end of which it is swi

25. Hot water production 25.1 Combi Type ’S’ Tap boiler The appliance is provided with an integral hot water store that keeps a limited quantity

When the heating demand is removed, the pump continues to run for the pre-set overrun time, at the end of which it is switched off. 25.4 Hot Water

25.1 Combi Type ’S’ Tap boiler...38 25.2 General operation ...38 25.3 Pump operation...38 25.4 Hot Wa

at both speeds: high speed with the aid of a pressure difference, low speed by means of a temperature increase. If, when the burner is ignited, the p

The blocking will only be discontinued when the pressure exceeds 1.3 bar. This offers the possibility to read the pressure in the appliance during to

The following status codes may be displayed during normal operation. Code Meaning . (point) burner in operation 0 ready for use C central heating

Table 15 Control Menu Letter Description Range Standard C maximum central heating water temperature 40 - 90 °C 82 O overrun time for the cent

28. Laptop Connection The EC25 has a special serial connection that can only be used by the installer for diagnosis with a PC. The special cable an

29. Fault Finding The following fault codes (blocking and interlocking) are saved. The last blocking code is displayed in view mode A. (See Section

Figure 23 Wiring Diagram Page 46 ECO HOMETEC (UK) LTD.

30. Electrical circuit diagram 1 Three-way valve 2 Gas valve 3 Central heating pump 4 Ionization pin 5 Incandescent igniter 6 Fan 7 Display 8 PC c

30.1 Decommissioning the boiler When decommissioning the boiler, precautions should be taken to avoid frost damage. Therefore it is essential that bo

31. User Instructions 32. Annual Servicing.  It is a condition of the boiler warranty that all servicing and maintenance be carried out annually

HEALTH & SAFETY INFORMATION FOR THE INSTALLER AND SERVICE ENGINEER Under the current issue of the Consumer Protection Act and the Health and S

Figure 24 Status Display Code Meaning F Too many ignition attempts 1 Supply sensor failure 2 Too many flame faults detected 3/ 7/E Control sys

EC 25 Compact Installation/User Manual page 51

Save gas Save money Only boilers from eco hometec are fitted with Variable Controlled Output eco hometec Unit

1. Safety Considerations The installation of this appliance must be carried out by a competent person in accordance with the relevant Gas Safety Regu

The manufacturers instructions must NOT be taken in any way as over-riding statutory obligations. 4. Terms of Warranty Damages to the appliance r

are not used, the eco hometec guarantee will become null and void. 6.2 Expansion Vessels  The EC25 Compact is designed for connection to a fully p

set and adapted to the capacity of the CH system. 8.2 EC 25HS Compact The ‘HS’ range are higher specification. With its 4 x 15mm connections it of