STOKVIS ENERGY SYSTEMS ECONOPLATE E3 Series Owner's manual

ECONOPLATE
E3 SERIES
HOT WATER SERVICE
PACKAGED
PLATE HEAT EXCHANGER
INSTALLATION OPERATION
& MAINTENANCE
DOCUMENTATION
STOKVIS ENERGY SYSTEMS
96R WALTON ROAD
EAST MOLESEY
SURREY
KT8 0DL
TEL: [phone]
FAX: [phone]
E-MAIL:[email protected]
WEBSITE:www.stokvisboilers.com
E3 SERIESIO&M2007

STOKVIS ECONOPLATE E3 SERIES
THE HOT WATER SERVICE PACKAGED PLATE HEAT EXCHANGER.
GENERAL DESCRIPTION.
The Stokvis Econoplate E3 series of packaged plate heat exchangers are available in
two ranges covering a total of some 46 units with outputs up to 1057kW, when fed
with primary water at 820C.They are designed where necessary to operate up to a
maximum operating temperature of 1100C for the E3A100 and 1200C for the E3A300
and E3C.
The Econoplate E3 series units are designed to provide hot water instantaneously,
without the need for storage, up to their maximum rated output. Where necessary they
can be coupled to a buffer vessel for even greater outputs.
All of the units are built around an epoxy coated chassis containing the heat
exchanger. This heat exchanger is constructed from a number of gasketed stainless
steel plates which can be readily added to, enabling the output capacity of an existing
unit to be increased if required.
Plate Heat Exchangers have low water content and low thermal inertia making them
ideal for use in systems with varying heat loads. The Econoplate E3 series units are
supplied with fast acting 3 port motorised control valves fitted to the primary circuit.
This valve is modulated by a purpose built PID controller which senses the secondary
water temperature and opens or closes the valve in response.
The primary water is constantly circulated around the unit by an integral pump which
has been matched to the heat exchanger, with an allowance of 6 kPa for pipework
losses also included.
Systems which utilise an existing primary feed pump, when connected to a unit with its
3 port valve, require an additional bypass. For instantaneous hot water service usage
a secondary hot water service return pump and non-return valve can be supplied,
fitted and wired to the unit as an option.
For semi-instantaneous hot water usage the transfer pump can be provided to pump
water from the storage vessel to the Econoplate.
In addition to the PID controller the control panel on the E3A series plate heat
exchanger also contains all functional indicator lamps, a control fuse, an output fuse,
duplex pump duty share (if fitted), high and low temperature alarm indication, common
volt free temperature alarm terminals, and high temperature lockout, extra low voltage
external interlock circuit, 4-20 mA flow temperature indication, a 7 day time clock for
either 2 temperatures of operation or a single temperature and night off, per day.
Alternatively the extra low voltage “external time clock” circuit can be used for
operation of the unit at 2 different temperatures or for single temperature and off.
On the E3A300 and E3Cmodels, primary pump overloads are included as standard
with overload trip indication on the panel. On duplex E3A300 and E3C units auto
changeover on primary pump fault is also included. Volt free primary pump run and
overload trip can be added as an option.
The Econoplate units are fully assembled and factory wired for ease of installation
leaving only the electrical supply and primary and secondary water circuits to be
connected on site.
1

TECHNICAL SPECIFICATION
E3A100 RANGE.
-Chassis Plate. : epoxy coated steel 25mm thick.
-Front Plate. : epoxy coated steel 20mm thick.
-Heat Exchanger Plate. : 316 grade stainless steel.
-Plate Gaskets. : EPDM.
-Retaining bolts. : 16mm carbon steel.
-Maximum primary operating pressure. : 10 bar.
-Maximum primary operating temperature. : 1100C
-Minimum primary pump inlet pressure (at 82OC): 2.5 mwg
-Minimum primary pump inlet pressure (at 110OC): 11.0 mwg
-Cold water feed. : Bronze 11/2” BSPF.
-Hot water service flow. : Bronze 11/2” BSPF.
-Hot water service return. : Bronze 1” BSPF (3/4” BSPF when
HWS secondary pump fitted).
-Primary water connections. : Inlet cast iron DN40 PN10
Outlet 1 ½” BSPM
-Primary Pump. : UPS 40.80F, 1 Phase , 250 Watt.
(UPSD40.80F on Duplex Units)
The Pump is fitted with an integral thermal protection relay.
-HWS Secondary pump : UP20-45N, (1 phase, 115 Watt.)
(optional). (complete with brass non return valve).
-HWS Transfer pumps : UP20-45N or UPS32-55B
(optional) dependent upon model
-Control valve. : 3 port, Cast Iron, DN40 PN10.
-Valve Actuator. : 240V, modulating, motor open/motor close.
-CONTROL PANEL. : Polycarbonate enclosure.
: Electronic PID temperature controller.
: 7 day time clock control of 2 temperature settings
and/or 1 temperature /night off, per day.
: Safety extra low voltage circuit for external “clock”
control of 2 temperatures or one temperature and off.
: Safety extra low voltage circuit for external interlock.
: Adjustable high limit and low limit temperature
alarms, temp. alarm lamp, common volt free temp.
alarm and selectable high temp. lockout modes.
: Functional indication of: primary pump (P1 or P2)
enabled, valve opening or closing.
: LCD Digital display of day and time, and secondary
flow temperature and any faults.
: 4-20 mA output of secondary flow temperature.
: Pump mode selection including duplex pump
duty share.
: Full menu driven interrogation of parameters and
operating modes.
: 500mA control fuse, 10A output fuse.
WEIGHT: 150Kg (Maximum) LENGTH: 740mm (excluding optional secondary pump)
HEIGHT : 1110mm WIDTH : 305mm (excluding optional secondary pump)
2

E3A100+0R : INSTANTANEOUS MECHANICAL DETAILS WITHOUT SECONDARY
PUMP. (AVM124)
OUTLET
11/2" BSP(F)
PRIMARY
INLET
DN40 PN16
PRIMARY OUTLET
1½BSP(M)
SECONDARY INLET
11/2" BSP(F)
SECONDARY
100 mm
75mm
250 mm
305 mm
555 mm
500 mm
400 mm 200 mm
740 mm
140 mm
1110 mm
101
mm
10mm
SECONDARY
RECIRC
1" BSP(F)
85
mm
80
mm
151 mm
80
mm
75mm
E3A100+1R : INSTANTANEOUS MECHANICAL DETAILS WITH SECONDARY HWS
RE-CIRCULATION PUMP. (AVM124)
OUTLET
11/2" BSP(F)
PRIMARY
INLET
DN40 PN16
PRIMARY OUTLET
1½BSP(M)
SECONDARY INLET
11/2" BSP(F)
SECONDARY
100 mm
75mm
250 mm
305 mm
555 mm
500 mm
400 mm 200 mm
740 mm
140 mm
1110 mm
101
mm
10mm
SECONDARY
RECIRC
3/4" BSP(F)
151 mm
75mm
340 mm
65mm
170 mm
3

E3A100+1T : SEMI-INSTANTANEOUS MECHANICAL DETAILS WITH PUMP ON
STRAIGHT SECONDARY CONNECTIONS, C/W TACO FLOW SETTER. (AVM124)
OUTLET
11/4" BSP(F). INC.
TACHONOVA AV23
PRIMARY
INLET
DN40 PN16
PRIMARY OUTLET
1½BSP(M)
SECONDARY INLET
3/4" BSP(F) (108 -114)
11/4" BSP(F) (116 -124)
SECONDARY
160mm
100 mm
75mm
250 mm
305 mm
555 mm
500 mm
400 mm 200 mm
740 mm
140 mm
310 mm
1110 mm
55
mm
108 -114 = 375mm
116 -124 = 420mm
E3A100+1T : SEMI-INSTANTANEOUS MECHANICAL DETAILS WITH PUMP ON
ANGLED SECONDARY CONNECTIONS.(AVM124)
OUTLET
11/2" BSP(F)
PRIMARY
INLET
DN40 PN16
PRIMARY OUTLET
1½BSP(M)
SECONDARY
100 mm
75mm
250 mm
305 mm
555 mm
500 mm
400 mm 200 mm
740 mm
1110 mm
101
mm
75mm
PRIMARY OUTLET
SECONDARY INLET
3/4" BSP(F) OR
1" BSP(F) OR
11/4" BSP(F)
225mm (20-45)
250mm (25-55)
275mm (32-55)
140 mm
4

TECHNICAL SPECIFICATION
E3A300 RANGE.
-Chassis Plate. : epoxy coated steel 25mm thick.
-Front Plate. : epoxy coated steel 20mm thick.
-Heat Exchanger Plate. : 316 grade stainless steel.
-Plate Gaskets. : EPDM.
-Retaining bolts. : 16mm carbon steel.
-Maximum primary operating pressure. : 10 bar.
-Maximum primary operating temperature. : 1200C
-Minimum primary pump inlet pressure (at 82OC): 2.0 mwg
-Minimum primary pump inlet pressure (at 110OC): 18.0 mwg
-Cold water feed. : Bronze 2” BSPF.
-Hot water service flow : Bronze 2” BSPF.
-Hot water service return. : Bronze 1” BSPF (or 3/4” BSPF when
HWS secondary pump fitted).
-Primary water connections. : Inlet cast iron DN40 PN10
Outlet 1 ½” BSPM
-Primary Pump. : UPS 40.120/2, 1 Phase, 470Watt.
(UPSD40.120/2 on Duplex Units)
The pump is fitted with an integral thermal protection relay.
-HWS Secondary pump : UP20-45N, (1 phase, 115 Watt.)
(optional). (complete with brass non return valve).
-HWS Transfer pumps : UPS32-80B, UPS40-60/2FB, UPS40-120/2FB
(optional) dependent upon model
-Control valve. : 3 port, Cast Iron, DN40 PN10.
-Valve Actuator. : 240V, modulating, motor open/motor close.
-CONTROL PANEL. : ABS enclosure.
: Electronic PID temperature controller.
: 7 day time clock control of 2 temperature settings
and/or 1 temperature /night off, per day.
: Safety extra low voltage circuit for external “clock”
control of 2 temperatures or one temperature and off.
: Safety extra low voltage circuit for external interlock.
: Adjustable high limit and low limit temperature
alarms, temp. alarm lamp, common volt free temp.
alarm and selectable high temp. lockout modes.
: Functional indication of: primary pump(P1 or P2)
enabled, valve opening or closing.
: LCD Digital display of day and time, and secondary
flow temperature and any faults.
: 4-20 mA output of secondary flow temperature.
: Pump mode selection including duplex pump
duty share and auto changeover on pump fault.
: Primary pump overloads with optional volt free pump
run and fault indication.
: Full menu driven interrogation of parameters and
operating modes.
: 500mA control fuse, 10A output fuse.
WEIGHT: 170Kg (Maximum) LENGTH: 740mm (excluding optional secondary pump)
HEIGHT : 1110mm WIDTH : 408mm (excluding optional secondary pump)
5

E3A300+0R : INSTANTANEOUS MECHANICAL DETAILS WITHOUT SECONDARY
PUMP. (AVM124)
OUTLET
2"BSP(F)
PRIMARY
INLET
DN40 PN16
RECIRCULATION
1" BSP(F)
PRIMARY OUTLET
11/2"BSP(M)
SECONDARY INLET
2"BSP(F)
SECONDARY
SECONDARY
GRUNDFOS
GRUNDFOS
500 mm
400 mm 200 mm
740 mm
1130 mm
100 mm
75mm
250 mm
408 mm
140 mm
101
mm
555 mm
151 mm
10mm
85
mm
80
mm
75mm
E3A300+1R : INSTANTANEOUS MECHANICAL DETAILS WITH SECONDARY HWS
RE-CIRCULATION PUMP.(AVM234)
OUTLET
2"BSP(F)
PRIMARY
INLET
DN40 PN16
RECIRCULATION
3/4"BSP(F)
PRIMARY OUTLET
11/2"BSP(M)
SECONDARY INLET
2"BSP(F)
SECONDARY
SECONDARY
GRUNDFOS
GRUNDFOS
500 mm
400 mm 200 mm
740 mm
1130 mm
100 mm
75mm
250 mm
408 mm
140 mm
170 mm
101
mm
555 mm
151 mm
340 mm
65mm
10mm
75mm
6

E3A300+1T : SEMI-INSTANTANEOUS MECHANICAL DETAILS WITH UPS32-80B
ON STRAIGHT SECONDARY CONNECTIONS C/W TACO FLOW SETTER.(AVM234)
OUTLET
2"BSP(F)
PRIMARY
INLET
DN40 PN16
PRIMARY OUTLET
11/2"BSP(M)
SECONDARY INLET
11/4"BSP(F)
SECONDARY
GRUNDFOS
500 mm
400 mm 200 mm
740 mm
1130 mm
100 mm
75mm
250 mm
408 mm
140 mm
130
mm
555 mm
151 mm
10mm
85
mm
400 mm
420 mm
55
mm
E3A300+1T : SEMI-INSTANTANEOUS MECHANICAL DETAILS WITH UPS32-80B
ON ANGLED SECONDARY CONNECTIONS.(AVM234)
OUTLET
2"BSP(F)
PRIMARY
INLET
DN40 PN16
PRIMARY OUTLET
11/2"BSP(M)
SECONDARY INLET
11/4"BSP(F)
SECONDARY
GRUNDFOS
GRUNDFOS
500 mm
400 mm 200 mm
740 mm
1130 mm
100 mm
75mm
250 mm
408 mm
140 mm
101
mm
555 mm
275mm
75mm
7

PERFORMANCE GUIDE FOR E3A100 RANGE(PRIMARY TEMPERATURE 82OC , COLD FEED 10OC )
ECONOPLATE MODEL
107 109 111 113 115 117 119 121 123 125
SECONDARY FLOW RATE 22.8 31.8 40.2 48 55.2 62.4 68.4 74.4 79.8 85.2
AT 60OC l/min
SECONDARY PRESSURE DROP 23 25 25 25 25 25 24 23 22 21
AT PEAK OUTPUT kPa
PRIMARY FLOW RATE l/sec 0.65 0.82 0.97 1.11 1.23 1.35 1.45 1.53 1.62 1.70
HEAT LOAD REQUIRED kW 79 111 140 167 192 217 238 259 278 297
SELECTION GUIDE FOR E3A100 RANGE
TOURIST HOTELS BY NUMBER OF 6 9 13 16 20 25 29 32 36 39
ROOMS
LUXURYHOTELSBYNUMBEROF 4 6 9 12141720232527
ROOMS
NUMBER OF STANDARD FLATS 5 8 13 17 23 29 36 43 50 57
NUMBER OF LUXURY FLATS 3 5 8 12 16 21 25 29 34 38
HOSPITALS & NURSING HOMES 5 9 14 21 29 38 46 55 63 70
BY NUMBER OF ROOMS
SPORTS CENTRES OR STADIUMS - - - 5 6 8 10 13 15 16
BY NUMBER OF SHOWERS
Available pump head in kPa from optional secondary recirculation pump, at various flow rates
RECIRCULATION RATE OF 1/2m3/hr 30 34 36 36 37 37 38 38 38 38
RECIRCULATION RATE OF 1m3/hr 7 202528293031313232
RECIRCULATION RATE OF 2m3/hr - - - 2.5 7 10 12 13 14 15
NOTES:The extra primary pump head available to overcome pipework resistance is 6 kPa (variable on request).
:Models with lower secondary resistance can be produced on request.
:Output figures vary with primary temperature E.g. capacity is increased by approx. 33% with a primary of 105OC.
:The selection guide uses diversity factors . For simultaneous operation of outlets calculate separately.
:For applications not listed or temperatures other than those above , contact Stokvis for a selection.
:Tourist hotels assume a shower and wash hand basin are available in each room.
:Luxury hotels assume a bath or shower and wash hand basin are available in each room.
:Standard flats are classed as having 1 sink, 1 wash hand basin and 1 shower.
:Luxury flats are classified as having 1 sink, 2 wash hand basins, and 1 bath.
:Standard fittings are assumed in all cases.
:There is a slight reduction in output when using 1 phase primary pump.

PERFORMANCE GUIDE FOR E3A300 RANGE(PRIMARY TEMPERATURE 82OC , COLD FEED 10OC )
ECONOPLATE MODEL
323 325 327 329 331 333 335 337 339 341 343
SECONDARY FLOW RATE 103.8 112.2 118.8 125.4 132 138 144.6 149.4 154.8 159.6 165
AT 60OC l/min
SECONDARY PRESSURE DROP 34 34 33 32 31 30 30 29 28 27 27
AT PEAK OUTPUT kPa
PRIMARY FLOW RATE l/sec 2.40 2.55 2.66 2.76 2.85 2.95 3.05 3.10 3.17 3.23 3.3
HEAT LOAD REQUIRED kW 361 391 414 437 460 481 503 520 539 556 575
SELECTION GUIDE FOR E3A300 RANGE
TOURIST HOTELS BY NUMBER OF 55 61 67 73 78 84 90 96 102 106 112
ROOMS
LUXURY HOTELS BY NUMBER OF 36 41 45 50 54 58 62 65 68 71 75
ROOMS
NUMBER OF STANDARD FLATS 85 96 106 117 127 137 150 160 170 178 188
NUMBER OF LUXURY FLATS 56 64 72 80 89 97 107 115 122 130 137
HOSPITALS & NURSING HOMES 100 113 127 141 158 170 186 196 209 220 235
BY NUMBER OF ROOMS
SPORTS CENTRES OR STADIUMS 27 31 35 38 42 46 50 54 58 60 64
BY NUMBER OF SHOWERS Available pump head in kPa from optional secondary recirculation pump, at various flow rates
RECIRCULATION RATE OF 1/2m3/hr 38 38 38 38 38 38 38 38 38 38 38
RECIRCULATION RATE OF 1m3/hr 32 32 32 32 32 32 32 32 32 32 32
RECIRCULATION RATE OF 2m3/hr 14 15 16 16 17 17 17 17 18 18 18
NOTES:The extra primary pump head available to overcome pipework resistance is 6 kPa (variable on request).
:Models with lower secondary resistance can be produced on request.
:Output figures vary with primary temperature E.g. capacity is increased by approx. 33% with a primary of 105OC.
:The selection guide uses diversity factors . For simultaneous operation of outlets calculate separately.
:For applications not listed or temperatures other than those above , contact Stokvis for a selection.
:Tourist hotels assume a shower and wash hand basin are available in each room.
:Luxury hotels assume a bath or shower and wash hand basin are available in each room.
:Standard flats are classed as having 1 sink, 1 wash hand basin and 1 shower.
:Luxury flats are classified as having 1 sink, 2 wash hand basins, and 1 bath.
:Standard fittings are assumed in all cases.
:There is a slight reduction in output when using 1 phase primary pump.

TECHNICAL SPECIFICATION
E3C RANGE.
-Chassis Plate. : epoxy coated steel 25mm thick.
-Front Plate. : epoxy coated steel 25mm thick.
-Heat Exchanger Plate. : 316 grade stainless steel.
-Plate Gaskets. : EPDM.
-Retaining bolts. : 20mm carbon steel.
-Maximum primary operating pressure. : 10 bar
-Maximum secondary operating pressure. : 6 bar
-Maximum primary operating temperature. : 1200C
-Minimum primary pump inlet pressure (at 82OC): 5 mwg
-Cold feed connection. : Bronze 2” BSPF.
-Hot water service flow. : Bronze 2” BSPF.
-Hot water service return. : Bronze 11/4” BSP.
-Primary water connections. :Cast Iron DN50 PN10 inlet , 2” BSP
outlet
-Primary Pump. :UPS 50.120/2 (1 or 3 Phase 760 W)
:UPSD 50.120/2 on duplex units
The pump is fitted with an integral thermal protection relay.
-HWS Secondary pump : UPS32-55B, 1 phase, 145 Watt.
(optional). (complete with bronze non return valve).
-Control valve. : 3 port, Cast Iron, DN50, PN10.
-Valve Actuator. : 240V, modulating, motor open/motor close.
-CONTROL PANEL. : Polycarbonate enclosure.
: Electronic PID temperature controller.
: 7 day time clock control of 2 temperature settings
and/or 1 temperature /night off, per day.
: Safety extra low voltage circuit for external “clock”
control of 2 temperatures or one temperature and off.
: Safety extra low voltage circuit for external interlock.
: Adjustable high limit and low limit temperature
alarms, temp. alarm lamp, common volt free temp.
alarm and selectable high temp. lockout modes.
: Functional indication of: primary pump(P1 or P2)
enabled, valve opening or closing.
: LCD Digital display of day and time, and secondary
flow temperature and any faults.
: 4-20 mA output of secondary flow temperature.
: Pump mode selection including duplex pump
duty share and auto changeover on pump fault.
: Primary pump overloads with optional volt free pump
run and fault indication.
: Full menu driven interrogation of parameters and
operating modes.
: 500mA control fuse, 10A output fuse.
WEIGHT: 250Kg (Maximum) LENGTH:865mm
HEIGHT: 1165mm WIDTH: 475mm (excluding optional
secondary pump)
PERFORMANCE - From 90 to 322 Litres per minute of hot water at 60OC(based on a
primary temperature of 82OC and a cold feed temperature of 10OC)
10

E3C+0R : INSTANTANEOUS MECHANICAL DETAILS WITHOUT SECONDARY
PUMP.(AVM124)
SECONDARY
RECIRC
SECONDARY INLET
2" BSP(F)
" BSP(M)
11/4
PRIMARY OUTLET
2" BSP(F)
PRIMARY INLET
DN50 PN10
SECONDARY OUTLET
2" BSP(F)
135mm
330mm
140mm
75mm
500mm
865mm
151mm
275mm
1165mm
590mm
87mm
E3C+1R : INSTANTANEOUS MECHANICAL DETAILS WITH SECONDARY PUMP.
(AVM124)
SECONDARY
RECIRC
SECONDARY INLET
2" BSPF
" BSPF1
4
1
/
PRIMARY OUTLET
2" BSPF
PRIMARY INLET
DN50 PN10
SECONDARY OUTLET
2" BSPF
135mm
452mm
330mm
140mm
105mm
75mm
500mm
865mm
151mm
275mm
1165mm
590mm
325mm
11

E3C+1T : SEMI-INSTANTANEOUS MECHANICAL DETAILS
WITH UPS32-80B TRANSFER PUMP.(AVR32)
SECONDARY INLET
11/4" BSP(F)
PRIMARY OUTLET
2" BSP(M)
PRIMARY INLET
DN50 PN10
SECONDARY OUTLET
2" BSP(F)
330mm
140mm
75mm
500mm
865mm
151mm
275mm
1165mm
590mm
85mm
452mm
420mm
130mm 135mm
E3C+1T : SEMI-INSTANTANEOUS MECHANICAL DETAILS
WITH UPS40-60/2 FB TRANSFER PUMP. (AVM234)
SECONDARY INLET
DN40 PN6/10
PRIMARY OUTLET
2" BSP(M)
PRIMARY INLET
DN50 PN10
SECONDARY OUTLET
2" BSP(F)
330mm
140
mm
75mm
500mm
865mm
151mm
275mm
1165mm
590mm
85mm
452mm
GRUNDFOS
445mm
135mm
97.5mm
12

PERFORMANCE GUIDE FOR E3C RANGE(PRIMARY TEMPERATURE 82OC , COLD FEED 10OC )
ECONOPLATE MODEL
E3C22 E3C26 E3C30 E3C34 E3C38 E3C42 E3C46 E3C50 E3C54 E3C58 E3C62 E3C66 E3C70
SECONDARY FLOW RATE 163.2 186 207.6 228.6 244.8 259.8 273 286.8 295.8 307.8 317.4 325.2 332.4
AT 60OC l/min
SECONDARY PRESSURE DROP 38 35 33 31 29 27 25 24 23 22 21 20 19
AT PEAK OUTPUT kPa
PRIMARY FLOW RATE l/sec 3.95 4.35 4.70 5.05 5.25 5.45 5.60 5.79 5.85 6.00 6.10 6.15 6.20
HEAT LOAD REQUIRED kW 568 649 724 797 852 905 951 1000 1031 1072 1106 1132 1157
SELECTION GUIDE FOR E3C RANGE
TOURIST HOTELS BY NUMBER OF 110 135 165 192 212 234 253 275 290 310 326 340 351
ROOMS
LUXURY HOTELS BY NUMBER OF 75 91 108 126 140 153 163 179 187 200 210 220 229
ROOMS
NUMBER OF STANDARD FLATS 185 230 280 330 370 408 440 480 507 548 575 600 623
NUMBER OF LUXURY FLATS 135 168 207 240 273 302 330 360 380 410 432 450 466
HOSPITALS & NURSING HOMES 230 283 345 400 450 492 530 573 607 648 680 703 733
BY NUMBER OF ROOMS
SPORTS CENTRES OR STADIUMS 63 80 100 120 133 148 163 180 193 207 220 230 240
BY NUMBER OF SHOWERS
RECIRCULATION RATE OF 1m3/hr 48 49 49 49 49 49 49 49 49 49 49 49 49
RECIRCULATION RATE OF 3m3/hr 39 40 41 41 42 42 42 42 42 42 42 42 42
RECIRCULATION RATE OF 5m3/hr 22 24 26 28 29 30 31 31 31 32 32 32 32
NOTES:The extra primary pump head available to overcome pipework resistance is 6 kPa (variable on request).
:Models with lower secondary resistance can be produced on request.
:Output figures vary with primary temperature E.g. capacity is increased by approx. 33% with a primary of 105OC.
:The selection guide uses diversity factors . For simultaneous operation of outlets calculate separately.
:For applications not listed or temperatures other than those above , contact Stokvis for a selection.
:Tourist hotels assume a shower and wash hand basin are available in each room.
:Luxury hotels assume a bath or shower and wash hand basin are available in each room.
:Standard flats are classed as having 1 sink, 1 wash hand basin and 1 shower.
:Luxury flats are classified as having 1 sink, 2 wash hand basins, and 1 bath.
:Standard fittings are assumed in all cases.
:There is a slight reduction in output when using 1 phase primary pump.

INSTALLATION.
PRIMARY
The primary inlet connection is made into the 3 port valve, whilst the outlet is from the
lower BSP threaded connection. Both primary connections should be made using the
correct counter flanges and suitable isolating valves, to enable servicing of the unit
after installation.
To ensure correct operation, water at the design flow temperature should be available
to the plate heat exchanger at all times. This is necessary because the plate heat
exchanger itself, under no load conditions, does not flow water through the boiler.
Consequently when a demand for hot water occurs the boiler would be unable to
respond fast enough to prevent temperatures dropping.
On systems with a sealed secondary circuit, operating with primary temperatures over
900C, where a flow can persist even when the primary pump is switched off and/or
motorised valve is closed, by the inbuilt high limit, additional primary shut of valves
operated by a high limit thermostat may be required.
The “Typical installation schematic” shows an ideal example.
TYPICAL INSTALLATION OF ECONOPLATE E3 SERIES PLATE HEAT
EXCHANGER ON A COMBINED HEATING AND HOT WATER SYSTEM
( SHOWN WITH HWS PRIORITY).
BOILER
LOW VELOCITY MANIFOLD
ECONOPLATE
PACKAGE
HEATING
CIRCUIT
HWS
CIRCUIT
COLD WATER
FEED
SHUNT PUMP
ISOLATION , SAFETY & REGULATION VALVES NOT SHOWN FOR CLARITY
14

INSTANTANEOUS HOT WATER APPLICATIONS.
When water is being drawn directly from the Econoplate into the distribution system to
the taps this is termed instantaneous hot water generation.
The cold water feed connection is made into the bottom horizontal bronze connection
on the rear of the Econoplate. The cold feed may be either from a cold feed storage
tank which can itself be boosted if required. Alternatively the unit may be connected to
the mains, a kit of components required by part G3 of the approved document of the
Building Regulations 1985 and complying with any Installation Requirements for bylaw
compliance, can be provided to complete the package.
The hot water service flow is connected into the top bronze connection, again on the
rear of the Econoplate.
This connection can be identified by noting the electrical temperature probe fitted into
it.
A secondary re-circulation must be maintained at all times either around the
installation or locally to the Econoplate. For this purpose, a connection is provided in
the bronze cold feed casting, or alternatively if the optional secondary re-circulation
pump (complete with non-return valve) is provided, then the connection is made into
the pump. Isolating valves should be fitted to all circuits.
SEMI-INSTANTANEOUS HOT WATER APPLICATIONS.
When hot water is drawn from a storage vessel into the distribution system to the taps
and the vessel is heated directly by the Econoplate, this is termed semi instantaneous
hot water generation. This type of installation particularly suits applications which have
low cold feed pressures or insufficient boiler power available.
The cold feed connection is made into the bottom, of the vessel. The cold feed can still
be either from a cold feed storage tank which can itself be boosted or it can be mains
fed, the same restrictions/requirements as above apply.
The Econoplate is fitted with a transfer pump which draws water from the bottom of
the vessel at the design flow rate of the Econoplate, this water enters the Econoplate
through the lower bronze connection and is heated to the desired temperature and is
then pumped from the top bronze connection into a top connection on the vessel. Hot
water flows from the top of the vessel into the distribution system and to the taps. No
hot water return is required for the operation of the Econoplate in this type of system.
OTHER APPLICATIONS.
Many other applications other than hot water service can be catered for. The lower
connection on the unit is the return and the top connection is the flow.
RECOMMENDED MINIMUM CLEARANCES FOR MAINTENANCE.
450mm front, 300mm pump side, 150mm other side
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SECONDARY INSTALLATION DETAILS.
Instantaneous Application.
LEGEND
SAFETY VALVE
DOUBLE NRV
SINGLE NRV
ISOLATION VALVE
AUTO AIR VALVE
DRAIN VALVE
HWS DRAW OFF
EXPANSION VESSEL RECIRC PUMP
COLD WATER
SERVICE
PLATE HEAT
EXCHANGER
PRESSURE
REG VALVE
N.B. COMPLIANCE WITH WATER BY-LAWS, BUILDING REGULATIONS & ANY OTHER
APPLICABLE STANDARDS SHOULD BE CHECKED PRIOR TO INSTALLATION
MAINTENANCE
LOCKSHIELD VALVE
(PROHIBITED BY
U.K. REGULATIONS)
Semi-Instantaneous Application.
LEGEND
SAFETY VALVE
DOUBLE NRV
SINGLE NRV
ISOLATION VALVE
AUTO AIR VALVE
DRAIN VALVE
HWS DRAW OFF
EXPANSION VESSEL
RECIRC PUMP
COLD WATER
SERVICE
PLATE HEAT
EXCHANGER PRESSURE
REG VALVE
N.B. COMPLIANCE WITH WATER BY-LAWS, BUILDING REGULATIONS & ANY OTHER
APPLICABLE STANDARDS SHOULD BE CHECKED PRIOR TO INSTALLATION
MAINTENANCE
LOCKSHIELD VALVE
(PROHIBITED BY
U.K. REGULATIONS)
LOCKSHIELD
ISOLATION VALVE
HWS RETURN
HWS FLOW
HWS BUFFER
VESSEL
ANTI VAC VALVE
SETTER VALVE
T & P VALVE
PHE TRANSFER
PUMP
ALTERNATIVE
POSITION FOR
T & P VALVE
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ELECTRICAL DETAILS FOR +1R MODELS.
E3A100 Range: 240V - Single phase - 375 Watt
E3A300 Range: 240V - Single phase - 595 Watt
E3C Range : 415V - 3 phase - 915 Watt
E3C Range : 240V - Single phase - 915 Watt
When a transfer pump is fitted the power consumption will be greater.
An external electrical supply isolator should always be fitted adjacent to the unit.
The supply itself should be provided with suitable protection in accordance with
current IEE regulations and codes of practice.
EXTERNAL CONNECTIONS
Common Temperature Alarm.
A rise of 10oC above the set point or a fall of 20oC below the set point causes an
alarm relay to be energised. A pair of volt free terminals, which close on a fault,
are available for external indication.
External Interlock.
An external safety device or switched circuit can be connected to the Econoplate
which will shut the unit down in case of a fault, it is a safety extra low voltage
circuit, an open circuit should be used to shut the unit down.
External “Clock”.
An external device can be connected to switch between 2 temperatures, or to
switch between a single set point and off. A closed contact across this safety
extra low voltage circuit gives the day setting and an open circuit the night.
External Temperature indication.
A 4-20mA output gives an indication of the secondary flow temperature, it is a
linear scale, 4mA = 0OC, 20mA = 99OC (24V @ 470 ohm).
Fuse Protection.
The electronic controller is protected by a 500mA fuse and the main p.c.b. output
side is protected by a 10A fuse, both are located on the p.c.b.
WARNING
NEVER RUN CONTROL CABLES USING LOW VOLTAGES WITH POWER
CABLES, INDUCED VOLTAGES CAN AFFECT THE OPERATION OF THE
CONTROLLER.
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OPERATION.
Prior to switching the Econoplate on it must be ensured that the unit is filled with water
and that all pipework and pumps are vented.
Once this is complete and the unit is on, the Econoplate Controller should be set up as
described in the Econotrol 2100 Controller Manual to suit the particular requirements
of the client.
The pump(s) should all be vented. The direction of rotation should be checked on the
3 phase E3C units.
In all cases the pump run current should be measured.
On the E3A300 and E3C the overloads should be set accordingly.
Overload trip is indicated on the LCD display and on duplex units auto changeover is
also included, these functions should be checked.
On all units the motorized valve should be checked for correct connection and travel
by simulating a load / no load situation.
There are three different types of 3 port valve/actuator combinations used on
E3 series units.
Current units are fitted with a Sauter BUE valve with an AVM124F130 actuator.
Early models were fitted with Sauter BXE valves and an AVR32W30F001actuator,
which was later replaced by the AVM234SF132-5 actuator.
To check the correct connection of valve and actuator proceed as follows:
Units fitted with the AVM124 actuator are connected to the valve body and spindle by two clamps which
are secured with hexagon head screws. The upper (drive spindle) clamp can be released and the
spindle can be checked for up and down movement by hand without removing the bottom (valve body)
clamp. Once the valve spindle movement is checked, ensure that both clamps are re-fitted correctly in
the location grooves on the spindle and valve body and are not loose.
Units fitted with the AVM124 actuator have automatic self adjusting valve spindle travel.
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