STOKVIS ENERGY SYSTEMS ECONOPLATE H1 User guide

1 Issue 1

ECONOPLATE H1

HEAT INTERFACE UNIT

Installation, Commissioning

and Servicing Instructions

Note: THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE

INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT.

THE ECONOPLATE H1 UNIT IS INTENDED FOR USE IN LOW TEMPERATURE

‘DISTRICT HEATING’ SCHEMES.

STOKVIS ENERGY SYSTEMS

96R WALTON ROAD

EAST MOLESEY

SURREY

KT8 0DL

Tel: 020 8783 3050 / 08707707747

Fax: 020 8783 3051 / 08707707767

E-Mail: [email protected]

Website: www.stokvisboilers.com

ECONOPLATE H1 SERIES-V1-IO&M-29052013

2 Issue 1

INDEX

Item Page

1. General Warnings 2

2. General Requirements 2

3. Product Description 3

4. Technical Data 3

5. Installation 5

6. Operation of Unit 8

7. Commissioning 9

8. Fault Finding 11

9. Servicing 13

10. Internal Components 14

11. Appendix 1 – Unit Schematic 15

12. Appendix 2 – Wiring Schematic 16

13. Appendix 3 – DIP Switch and LED Lights 17

14. Appendix 4 – Pump Information 18

THIS HEAT INTERFACE UNIT COMPLIES WITH THE ESSENTIAL REQUIREMENTS OF THE LOW VOLTAGE

DIRECTIVE 2006/95/EC AND THE ELECTROMAGNETIC COMPATIBILITY DIRECTIVE 2004/108/EC.

1.0 GENERAL WARNINGS

Inside the unit there is 230V, so unit MUST be isolated when being worked on

and must only be serviced by a competent and authorised person.

Water inside the unit can be at temperatures of up to 85°C so great care must

be taken when changing, adjusting or servicing components within the unit

and again must only be done by a competent and authorised person.

2.0 GENERAL REQUIREMENTS

2.1 Related Documents

The Pressure Systems Safety Regulations 2000

It is the law that pressure system appliances are installed, maintained and serviced

by competent persons in accordance with the above regulations. Failure to install

appliances correctly could lead to prosecution. It is in your own interest and that of

safety, to ensure that this law is complied with.

The installation of the Econoplate H1 unit should be in accordance with the relevant

requirements of the Pressure System Regulations, Building Regulations and IEE

Regulations.

Caution – Risk of

Electrical Shock Caution – Risk of

Danger

3 Issue 1

2.2 Mains Water Connections

All connections to local water mains must comply with local requirements.

3.0 PRODUCT DESCRIPTION

This district heat interface unit is designed to be used on low temperature district hot

water supply of up to 85°C. The unit is configured to provide direct heating which can

be either via underfloor heating system or radiator system. Hot Water is provided via

a heat exchanger within the unit.

The Econoplate H1 unit is housed in a powder coated steel cabinet with a removable

front cover. Inside there is prefabricated pipework assembled together with a set of

electronic valves that are controlled by an electronic controller which takes care of

heating and hot water demand.

4.0 TECHNICAL DATA

The basic overall dimensions of the unit are shown below in Figure 1.

Figure 1 – Basic Overall Dimensions

ECONOPLATE H1 UNIT

4 Issue 1

Figure 2 – Econoplate H1 Technical Data

GENERAL DATA H1-0/14 H1-0/24 H1-0/40

Maximum Pressure - District Bar

Maximum Pressure - Heating Bar

Maximum Pressure - Cold Feed/Domestic Hot Water Bar

Maximum District Temperature °C

Maximum District Flow Rate l/min

Weight Empty kg

Dimensions HxWxD mm

Electrical Supply

Power Consumption W

TEMPERATURE RANGES

Heating Temperatures - Low Mode °C

Heating Temperatures - High Mode °C

Hot Water Temperatures °C

WATER CONNECTIONS

District - Inlet & Outlet BSP male

Heating System - Inlet & Outlet BSP male

Cold Inlet/Outlet & Hot Water Outlet BSP male

HEATING PERFORMANCE

Heat Output @

T11K & 18 l/min Flow kW

Heat Output @

T15K & 18 l/min Flow kW

Heat Output @

T20K & 18 l/min Flow kW

Note for H1 units: The district flow rate is equal to the heating flow rate as this is a direct circuit.

XS Head from Integral Pump @ ΔT11K kPa

XS Head from Integral Pump @ ΔT15K kPa

XS Head from Integral Pump @ ΔT20K kPa

Note for H1 units: XS head assumes a balanced supply with no additional head from the district at the Econoplate.

HOT WATER PERFORMANCE

l/min

District Flow Rate Required @ 80°C l/min 11.7 10.11 9.36

District Flow Rate Required @ 70°C l/min 16.76 13.45 11.98

l/min

District Flow Rate Required @ 80°C l/min 16.11 13.54 12.36

3/4"

40-60

3/4"

1/2"

DIRECT HEATING,INDIRECT HOT WATER

60-80

Maximum Hot Water Output @ 10-50°C

Nominal Hot Water Output @ 10-50°C

Units

30-45

230V/50Hz AC

105

547x494x232

Figure 3 – System Features

Hot Water Priority

Preheat Function to keep hot water heat exchanger warm

Heating ramp up within 3 minutes

Unit shutdown if heating temperature goes to 50-55°C on Underfloor Model

Pump anti-lock feature – runs pump 5 secs every 24 hours

Anti Calcification pump run on after hot water provision

5 Issue 1

5.0 INSTALLATION

Note – when working with the unit, supply services when connected could

reach 85°C, and once electrically connected the unit has 230V present within.

5.1 Location

Figure 4 – Connection Locations & Dimensions

Refer to above Figure 4 for connection dimensions. You will need access from

above and below the unit to run the relevant pipework to and from the unit. Find a

suitable space to mount the unit.

The unit is designed for wall mounting. The unit can be mounted using either a wall

bracket or spacer hanging bracket [see Fig 5]. The spacer hanging bracket provides

space to run pipes behind the unit if required.

Either bracket should be fixed to a flat wall. Hold the relevant bracket to the wall,

making sure it is square, and mark the hanging bracket holes or top 2 holes of spacer

bracket on the wall and drill appropriate holes in the wall, inserting wall plugs. Screw

the relevant bracket to the wall, ensuring the bracket is square.

CONNECTION LOCATIONS

6 Issue 1

If using the wall bracket, then hang the unit on the bracket, mark the four locating

holes on the wall, remove unit again, drill appropriate holes in the wall, insert wall

plugs, remount the unit and secure to wall.

If using the spacer hanging bracket, mark the two bottom holes, remove the bracket

and drill appropriate holes in the wall, insert wall plugs, re-mount the bracket and

secure via the bottom holes, then mount the unit onto the bracket and secure to the

bracket using the 4 x M4 screws provided.

Figure 5 - Mounting Bracket / Spacer Hanging Bracket Dimensions

5.2 Pipework Connections

The ‘district’ and apartment pipework should be connected to the appropriate points

labelled on the figure below. It is advisable to provide means of isolation and

disconnection [via unions] on all connections to the unit to facilitate replacement of

the unit if this is ever required. You need to ensure that the systems you are

connecting to, are clean or have been flushed out appropriately.

MOUNTING BRACKET

SPACER HANGING BRACKET

7 Issue 1

Figure 6 – Pipework Connections

1) ‘District’ Inlet and Outlet – 3/4" Male BSP

These are situated at the top of the unit, with inlet on the left [Connection 1, Figure 6]

and outlet on the right [Connection 2, Figure 6]. When connecting the district supply

to and from the unit, ensure to provide air eliminator at upper most point of pipework.

2) Heating Inlet and Outlet – 3/4" Male BSP

These are situated at the bottom of the unit with the heating flow on the far left

[Connection 3, Figure 6] and heating return on the far right [Connection 7, Figure 6].

Connect these to your heating distribution system.

3) Cold Water Inlet/Outlet and Hot Water Outlet – 1/2" Male BSP

These are situated at the bottom of the unit with the cold water inlet the middle of the

½” connections [Connection 5, Figure 6].

There is a cold water outlet if the unit is provided with cold water meter to the left of

the heating return [Connection 6, Figure 6]. Finally the hot water outlet is to the right

of the heating flow [Connection 4, Figure 6]. Connect your mains cold water to the

cold water inlet and outlet if being used in accordance with local by-laws, and

connect your hot water distribution pipe to the hot water outlet on the unit.

PIPEWORK CONNECTIONS

8 Issue 1

5.3 Electrical connections

All wiring to the unit must be in accordance with the IEE regulations, and any local

regulations which apply. Note: If in any doubt a qualified electrician should be

consulted.

The unit is supplied with a 2m 3-core flying lead for connection to mains supply.

Mains connection must be done through a fused isolator rated at 3 Amps and

positioned locally to the unit.

The unit is also provided with a 2m 2-core flying lead for connection to a remote

controller.

6.0 OPERATION OF THE UNIT

Refer to Appendix 1 for system schematic to help understand how the unit works.

6.1 Unit Operation

Whenever power is applied to the unit, the stepper motors are reset to ensure they

are in their correct position, so you are likely to hear a clicking noise from the motors.

This is normal. Once the motors are in their correct position the unit is ready for its

operation.

It is recommended that you use the unit with the Nordgas “Easyremote” control

device, as this enables you to set hot water and heating temperatures using the

programmer. Alternatively you can provide your own Open Therm programmer or

room thermostat with volt free contacts to operate the unit.

6.2 Heating

When there is a heating requirement, as programmed in your controller or room

thermostat, the unit will go into heating mode. The diverter valve will switch to

heating port, the solenoid valve will open, the pump will come on, and the mixing

valve will start to operate and will gradually ramp up the temperature of the heating

water to the set temperature over a period of up to 3 minutes. The unit will continue

to provide heating [at set temperature or ‘district’ inlet temperature whichever is the

lower], until desired room temperature has been achieved or unit switches into hot

water mode, where the solenoid valve will close, and the pump will stop. The unit will

restart its heating cycle every time it switches in to heating mode.

The unit will come set as requested:-

a. Underfloor heating mode, which comes with a cut out Klixon that will stop the

heating from working if the heating flow temperature reaches between 50°C

and 55°C. If this occurs then the heating will have to be reset on the

electronic box before heating mode will operate again [see section 8.0, Figure

7].

b. Radiator heating mode.

9 Issue 1

6.3 Hot Water

Hot Water has priority [unless remote programmer has been programmed otherwise]

and when the hot water flow detector senses a flow of greater than 2.1 l/m ±0.3 then

the unit switches into hot water mode. The diverter valve will switch to hot water port,

the solenoid valve will open, the pump will come on, and the mixing valve will start to

operate, controlling the ‘district’ temperature to the heat exchanger to keep hot water

temperature at set temperature as long as there is sufficient temperature in the

district flow.

When the flow rate goes below 2.0 l/m ±0.3 then the unit will switch out of hot water

mode. The solenoid valve will close but the pump will continue for 5 seconds to cool

down the heat exchanger to reduce lime scaling.

7.0 COMMISSIONING

Note – when working with the unit, supply services when connected could

reach 85°C, and once electrically connected the unit has 230V present within.

7.1 Remote Controller / Room Thermostat

If the unit has been provided with the Nordgas “Easyremote” control device, then

refer to the instructions supplied with this item. However please note that with our

unit the following items are not available as detailed in the booklet:-

Page 12 – P04 Thermo-regulation type. As the electronics do not allow for outside temperature

sensor, you can only use setting 0, 1 and 4. Option 1 is the best to use.

Page 17 – KD Outside Probe not available on this unit.

Page 24 – Setting up outside probe KD value not available on this unit.

Page 37 – Outside Probe Temperature, System Water Pressure, S03 Temperature and S04

Temperature are all not available on this unit.

Page 39 – Display temperature outside probe not available on this unit.

Page 40 – Display system water pressure not available on this unit.

If you do not take the Nordgas “Easyremote”, then the heating and hot water flow

temperatures have been factory preset. If you wish to change the temperatures then

you need to access the electronic box and take off the plug covering the

potentiometers – P1 [hot water flow temperature] and P2 [heating flow temperature]

[see appendix 2]. Twisting either potentiometer clockwise with a screwdriver will

increase the temperature and anti clockwise will reduce the temperature. Refer to

Figure 2 [page 4] to see the settable range.

10 Issue 1

7.2 Heat Meter

If provided the booklet is attached to these instructions.

7.3 Cold Water Meter

If provided the booklet is attached to these instructions.

7.4 System Safety Relief Valve

It is assumed that there are system safety valves in place to take care of this so no

pressure relief is provided within the unit, although please note that maximum

pressure is 6 bar.

7.5 Pre-Heat Function

There is a pre-heat function available which should only be used if length of time to

get hot water from the unit takes too long as this function might aid quicker provision

of the hot water. If this function is required, then obtain access to the electronic box

and locate the dip switches [see Appendix 2]. To turn on the pre-heat function then

flick dip switch 5 to on [see Appendix 3]. This will then heat the exchanger when it

goes to 15°C below hot water set temperature and switches back off when it reaches

10°C below hot water set temperature. This could in turn speed up time to achieve

hot water set temperature.

8.0 FAULT FINDING

Figure 7 – Nordgas “Easyremote” Error Codes

Error

Code Fault Description Course of Action

E 5 Faulty Heating Temperature

Sensor

Replace the Heating Temperature Sensor

[see Figure 9].

E 6 Faulty Hot Water Temperature

Sensor

Replace the Hot Water Temperature

Sensor [see Figure 9].

E 69 Klixon safety device tripped If you are satisfied that there is no reason

why the fault manifested itself and the

temperature at the Klixon has gone, you

can restart Heating mode by pressing

reset button on the electronic control box

[see Appendix 2] and red light should

come off.

E 76 Faulty Solenoid Valve Check the Solenoid Valve.

E 79 Faulty Dip Switch Configuration Check that dip switches 2 and 3 inside the

electronic control box are in off position

[see Appendix 3].

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