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: [phone]
Fax: [phone]
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 @
Δ
T11K & 18 l/min Flow kW
Heat Output @
Δ
T15K & 18 l/min Flow kW
Heat Output @
Δ
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
kW
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
kW
District Flow Rate Required @ 80°C l/min 16.11 13.54 12.36
3/4"
40-60
16
18
3/4"
1/2"
14
85
6
6
DIRECT HEATING,INDIRECT HOT WATER
60-80
25
Maximum Hot Water Output @ 10-50°C
16
Nominal Hot Water Output @ 10-50°C
18
50
14
39
16
Units
21
10
30-45
230V/50Hz AC
105
18
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

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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

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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

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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

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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.

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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].

11 Issue 1
If the Nordgas “Easyremote” is fitted then always first check if any error messages
appear on the display [see Figure 7 above]. Check also the fault light on the
electronic box [see Appendix 3].
If there are no error messages or fault lights, then firstly switch off power to the unit,
wait for 10 seconds and then re-start the unit as this will reset the stepper motors.
If the unit still does not operate, then the next step is to check all wiring is correctly
connected to the right component, especially if connectors have been taken off at
any stage. Refer to Appendix 2 for wiring explanation.
If the above does not rectify the problem and the unit still does not operate
satisfactorily, then below are some suggestions of potential issues. Alternatively
consult supplier for assistance.
Figure 8 – Fault Finding Guide
Fault Possible Causes Action
‘District’ water not entering
the unit.
Blocked strainer
Solenoid valve not
operating correctly.
Unscrew the strainer cap
bolt and take the strainer
out, ensuring you have
isolated unit and waited
for water to cool down.
Clean or replace
accordingly.
Ensure there is positive
pressure between inlet
and outlet of valve
Check that 24V is being
supplied to the DC coil.
If above does not resolve
issue, replace solenoid
coil.
No Hot Water or Heating Remote Controller not
calling for Heating and/or
Hot Water
Electronics in Fault Mode
Solenoid valve not
operating
Adjust the Remote
Controller accordingly
Refer to Figure 7 above
See above

12 Issue 1
No Hot Water or Heating Control Valve not
operating or Diverter
Valve no operating
Pump not operating
Hot Water Flow sensor not
working
Safety klixon tripped [if
fitted]
‘District’ water
temperature too low
Check that 24V is being
supplied to either or both
DC coils.
If above does not resolve
issue, replace relevant
stepper motor
Check that impeller has
not seized.
Check you have 240 volts
going to pump.
If above does not resolve
issue, replace pump
Flow rate is above 2.5 l/m
If light on with no flow
replace the sensor
electronic.
If light doesn’t come on
with a flow rate of more
than 2.5l/m replace sensor
electronic
Review why klixon has
tripped out and re-set
electronics [see appendix
2]
If above does not resolve
issue, replace Klixon
Check ‘District’ supply
conditions
Low Hot Water flow rate Heat Exchanger blocked
Blocked cold water
strainer
Flush Heat Exchanger or
replace
Take out flow sensor
cartridge and check and
clean strainer

13 Issue 1
9.0 SERVICING SCHEDULE
Note – when working with the unit, supply services when connected could
reach 85°C, and once electrically connected the unit has 230V present within.
It is recommended that the unit is serviced once every 12 months to maintain its
efficiency and longevity.
9.1 Servicing the Strainer (Part 15 – Figure 9)
Isolate the unit from district supply. Open the screw cap from the strainer and take
the filter cartridge out. Depending on the condition either clean it or replace it and
put the screw cap back on again. Note the district water in the strainer could be
85°C.

14 Issue 1
10.0 INTERNAL COMPONENTS
Figure 9 – Internal Components and Part Numbers
INTERNAL COMPONENTS – ECONOPLATE H1 UNIT

15 Issue 1
Appendix 1 – Unit Schematic

16 Issue 1
Appendix 2 – Wiring Schematic
No Description Individual Wiring Connector
28 Remote Controller / Volt free Time
clock or Room thermostat
2 Black n/a
30 DHW Temperature Sensor 2 White Black Connector
31 DHW Flow Sensor Red, White and Blue White Connector
32 Mixing Valve Stepper Motor Blue, Black, Brown and Green White Connector
33 Mains Cable Blue, Brown and Green/Yellow n/a
34 Earth Cable Green/Yellow Uninsulated Crimp Ring
35 Pump N/a Black Connector
36 Diverter Valve Stepper Motor Blue, Black, Brown and Green Blue Connector
37 CH Temperature Sensor 2 Red Black Connector
38 Solenoid Valve 2 White 2 Terminal Crimps
39 CH Safety Thermostat 2 Black 2 Terminal Crimps

17 Issue 1
Appendix 3 – Dip Switches and LED Lights
SWITCH FUNCTION ON OFF
1 High temp / Low temp central
heating
Low temp High temp
2 N/A N/A Correct
3 N/A N/A Correct
4 Single plate / Twin plate Twin (H2) N/A Single (H1) Correct
5 DHW preheating Enabled Disabled
6 N/A N/A Correct
N.B Switches 2, 3 and 6 should always be in the off position
MATRIX LED
ANOTATION COLOUR LIGHT OFF LIGHT ON LIGHT FLASHING
ON Green Power Off Power On N / A
DHW Yellow No DHW Demand In DHW Mode Preheat Running
CH Yellow No CH Demand In CH Mode N / A
FAULT Red No Fault Low Temperature
lockout – requires
reset
Sensor faults – self
restoring when fault
rectified

18 Issue 1
APPENDIX 4 – PUMP INFORMATION