Lochinvar EcoForce EF80 Guide

1
MODELS:
EF80
EF100
EF120
EF150
EF180
EcoForce™
Wall mounted gas fired condensing
water heater
Installation, Commissioning, User
and Maintenance Instructions
Installation manual_EF_February 2018

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TABLE OF CONTENTS
cf INTRODUCTION......................................................................................................................................................................................................................................................................... 5
Regulations......................................................................................................................................................................................................................................................................................... 5
SAFETY GUIDELINES ............................................................................................................................................................................................................................................................... 6
General Description Of Safety Symbols Used .................................................................................................................................................................................................................................. 6
What To Do If You Smell Gas............................................................................................................................................................................................................................................................ 7
TECHNICAL DATA ..................................................................................................................................................................................................................................................................... 8
WATER QUALITY..................................................................................................................................................................................................................................................................... 13
ACCESSORIES AND UNPACKING ........................................................................................................................................................................................................................................ 13
Ancillary Items .................................................................................................................................................................................................................................................................................. 13
Unpacking......................................................................................................................................................................................................................................................................................... 13
INSTALLATION......................................................................................................................................................................................................................................................................... 14
General Notes................................................................................................................................................................................................................................................................................... 14
Condensate Drain............................................................................................................................................................................................................................................................................. 15
Filling The Condensate Trap............................................................................................................................................................................................................................................................15
GAS SUPPLY............................................................................................................................................................................................................................................................................ 16
Service Pipes.................................................................................................................................................................................................................................................................................... 16
Meters ...............................................................................................................................................................................................................................................................................................16
Gas Supply Pipes............................................................................................................................................................................................................................................................................. 16
Boosted Gas Supplies...................................................................................................................................................................................................................................................................... 16
Plant-Room Control Valve................................................................................................................................................................................................................................................................ 16
Equipment Gas System Leak Check...............................................................................................................................................................................................................................................16
FLUE SYSTEM ......................................................................................................................................................................................................................................................................... 17
General ............................................................................................................................................................................................................................................................................................. 17
Flue System Technical Details ........................................................................................................................................................................................................................................................17
Flue Terminal Location..................................................................................................................................................................................................................................................................... 18
Approved Flue System.....................................................................................................................................................................................................................................................................19
Installation Precautions ....................................................................................................................................................................................................................................................................19
C13, C33 Concentric Flue Systems ................................................................................................................................................................................................................................................ 20
C53 Twin Pipe Flue Systems...........................................................................................................................................................................................................................................................28
B23 Conventional Flue Installations ................................................................................................................................................................................................................................................ 34
Flue Discharge.................................................................................................................................................................................................................................................................................. 37
Type B23 (Conventional Flue) ......................................................................................................................................................................................................................................................... 37
Conventional And Twin-Pipe Flue Termination (Flat And Tiled Roofs) .........................................................................................................................................................................................37
Type C43 U Duct............................................................................................................................................................................................................................................................................. 37
Common Flue Systems....................................................................................................................................................................................................................................................................38
Flue Terminal Guarding ...................................................................................................................................................................................................................................................................38
Condensate Drain............................................................................................................................................................................................................................................................................. 38
C63 Certified Flue Systems ............................................................................................................................................................................................................................................................. 38
AIR SUPPLY ............................................................................................................................................................................................................................................................................. 39
Combustion Ventilation ....................................................................................................................................................................................................................................................................39
Cooling Ventilation............................................................................................................................................................................................................................................................................ 39
Mechanical Ventilation ..................................................................................................................................................................................................................................................................... 39
WATER CONNECTIONS ......................................................................................................................................................................................................................................................... 41
Installation Schematic Drawings...................................................................................................................................................................................................................................................... 41
Open Vented System Arrangement.................................................................................................................................................................................................................................................43
Unvented System Arrangement.......................................................................................................................................................................................................................................................43
De-Stratification ................................................................................................................................................................................................................................................................................43
Circulating Pumps ............................................................................................................................................................................................................................................................................ 44
Storage/Buffer Vessels.....................................................................................................................................................................................................................................................................44
Minimum Pipe header Sizing ...........................................................................................................................................................................................................................................................45
Flow Monitoring ................................................................................................................................................................................................................................................................................ 46
Water Pressure Switch..................................................................................................................................................................................................................................................................... 46
ELECTRICAL SUPPLY ............................................................................................................................................................................................................................................................ 46
Connector Strip................................................................................................................................................................................................................................................................................. 46
Fuses ................................................................................................................................................................................................................................................................................................ 48
Arc Welding Precautions..................................................................................................................................................................................................................................................................48
Ecoforce Wiring Diagram ................................................................................................................................................................................................................................................................. 49
CONTROL INTERFACE........................................................................................................................................................................................................................................................... 51
Control Panel/Display Unit ............................................................................................................................................................................................................................................................... 51
Control Panel Menu Structure..........................................................................................................................................................................................................................................................52
Display During Operation................................................................................................................................................................................................................................................................. 54
Monitor Screens ...............................................................................................................................................................................................................................................................................55
Service Function...............................................................................................................................................................................................................................................................................56
Schornsteinfeger Function (Germany Only).................................................................................................................................................................................................................................... 57
Programming In Standby Mode .......................................................................................................................................................................................................................................................57
Setting The Time And Date.............................................................................................................................................................................................................................................................. 57
Setpoints ...........................................................................................................................................................................................................................................................................................58
Setting The Timer Programs............................................................................................................................................................................................................................................................58
Hot Water Programme ..................................................................................................................................................................................................................................................................... 59
Pasteurisation Programme...............................................................................................................................................................................................................................................................60
Checking The Operating History...................................................................................................................................................................................................................................................... 61
Checking The Fault History..............................................................................................................................................................................................................................................................62
Setting The Maintenance Specifications ......................................................................................................................................................................................................................................... 63
Setting The User Lock...................................................................................................................................................................................................................................................................... 66
Setting The Parameters With The Display Menu............................................................................................................................................................................................................................ 67
FAULT CODE DISPLAY........................................................................................................................................................................................................................................................... 75
Lock-Out Codes................................................................................................................................................................................................................................................................................ 75
Blocking Codes................................................................................................................................................................................................................................................................................. 77
Messages..........................................................................................................................................................................................................................................................................................78
Maintenance Attention Message ..................................................................................................................................................................................................................................................... 78
CONTROL OPTIONS AND SETTINGS................................................................................................................................................................................................................................... 79
Water Heater Options....................................................................................................................................................................................................................................................................... 79
Anti-Legionella (Pasteurisation) Function ....................................................................................................................................................................................................................................... 80
Cascade Control...............................................................................................................................................................................................................................................................................81
GENERAL ................................................................................................................................................................................................................................................................................. 83
Maximum Cooling Time ................................................................................................................................................................................................................................................................... 83
Temperature Display On/Off ............................................................................................................................................................................................................................................................ 83
Gas Type Selection ..........................................................................................................................................................................................................................................................................83
Soft Start Options ............................................................................................................................................................................................................................................................................. 84
Pump Mode (EC Technology).......................................................................................................................................................................................................................................................... 84
Tank Sensor Sensitivity....................................................................................................................................................................................................................................................................84
COMMISSIONING AND TESTING .......................................................................................................................................................................................................................................... 84
Water Heater First Flush .................................................................................................................................................................................................................................................................. 84
Filling And Venting The Secondary System And Water Heater(S) ................................................................................................................................................................................................84
Checking Water Flow Through The Water Heater.......................................................................................................................................................................................................................... 85
Flow Monitoring ................................................................................................................................................................................................................................................................................ 85
ELECTRICAL INSTALLATION................................................................................................................................................................................................................................................. 86
GAS INSTALLATION................................................................................................................................................................................................................................................................ 86
WATER CONNECTIONS ......................................................................................................................................................................................................................................................... 86
COMMISSIONING THE EQUIPMENT .................................................................................................................................................................................................................................... 86
General Checks Prior To Lighting....................................................................................................................................................................................................................................................86
Equipment Checks Prior To Lighting ...............................................................................................................................................................................................................................................86

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Procedure For Initial Lighting ...........................................................................................................................................................................................................................................................87
General ............................................................................................................................................................................................................................................................................................. 87
Firing For The First Time.................................................................................................................................................................................................................................................................. 87
ADJUSTING AND SETTING THE BURNER........................................................................................................................................................................................................................... 88
Introduction ....................................................................................................................................................................................................................................................................................... 88
Adjustment values ............................................................................................................................................................................................................................................................................ 89
Setting screws gas valve(s): drawings ............................................................................................................................................................................................................................................ 93
Adjustments For New Water Heaters Or After A Service (Case A) ............................................................................................................................................................................................... 94
Adjusting after gas valve replacement, or in case of gas conversion (case B) .............................................................................................................................................................................94
Checking and adjusting at maximum load EF120 / EF150 / EF180 ..............................................................................................................................................................................................94
Checking And Adjusting At Minimum Load EF120 / EF150 / EF180 ............................................................................................................................................................................................. 95
Adjustment Procedures.................................................................................................................................................................................................................................................................... 96
PUTTING THE WATER HEATER OUT OF OPERATION...................................................................................................................................................................................................... 97
Out Of Operation: On/Off Function..................................................................................................................................................................................................................................................97
Out Of Operation: Power Off............................................................................................................................................................................................................................................................ 97
FAULT CODES, BLOCKING CODES ..................................................................................................................................................................................................................................... 98
LPG FUEL ............................................................................................................................................................................................................................................................................... 111
Related Documents........................................................................................................................................................................................................................................................................111
Conversion And Commissioning Procedure .................................................................................................................................................................................................................................111
MAINTENANCE...................................................................................................................................................................................................................................................................... 113
General ........................................................................................................................................................................................................................................................................................... 113
Maintenance Reminder Function................................................................................................................................................................................................................................................... 113
Service Intervals .............................................................................................................................................................................................................................................................................113
Waterside........................................................................................................................................................................................................................................................................................ 113
Inspection And Maintenance.......................................................................................................................................................................................................................................................... 114
Mounting the burner door correctly back onto the heat exchanger: ............................................................................................................................................................................................116
Temperature Adjustment Procedure ............................................................................................................................................................................................................................................. 117
Installation Noise ............................................................................................................................................................................................................................................................................ 117
Draining The Water Heater ............................................................................................................................................................................................................................................................ 117
Removing Scale And Sediment From The Storage Vessel..........................................................................................................................................................................................................117
Refilling The System ......................................................................................................................................................................................................................................................................118
Other Checks.................................................................................................................................................................................................................................................................................. 118
ErP SPECIFICATION DATA SHEET ..................................................................................................................................................................................................................................... 118
USER INSTRUCTIONS.......................................................................................................................................................................................................................................................... 118

5
INTRODUCTION
This manual has been written for:
The installer
System design engineers
Service engineers
End user
READ AND UNDERSTAND THE INSTRUCTIONS
Read and fully understand all instructions before attempting to operate maintain or install the unit.
REGULATIONS
It is the law in the UK that a competent person registered with the HSE approved body and in accordance with the Gas Safety regulations
installs all Gas appliances.
Failure to install the appliance correctly could lead to prosecution. It is in your own interest and that of safety to ensure the appliance is installed
correctly.
The installation of the water heater must be in accordance with the relevant requirements of the Gas Safety Regulations, Building regulations,
I.E.E. regulations and the bylaws of the local water undertaking. The installation should also be in accordance with any requirements of the
local gas distributor and local authority. In addition, the installation should follow the relevant guidance offered in the following documents. It
is not practical to list all relevant information but emphasis is placed on the following documents, as failure to comply with the guidance given
will almost certainly result in an unsatisfactory installation:
Regulation
Description
BS EN 1858: 2008 + A1: 2011
Chimneys, Components. Concrete flue blocks.
BS 5440-1: 2008
Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd family gases). Specification for
installation of gas appliances to chimneys and for maintenance of chimneys.
BS 5440-2: 2009
Installation and maintenance of flues and ventilation for gas appliances of rated input not exceeding 70 kW net (1st, 2nd and 3rd
family gases). Specification for installation and maintenance of ventilation for gas appliances.
BS 6644: 2011
Specification for Installation of gas-fired hot water Water heaters of rated inputs between 70 kW (net) and 1.8 MW (net) (2nd and 3rd
family gases).
BS 6700: 2006 +A1: 2009
Design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages.
BS 6880: 1988 Parts 1, 2 and 3
Code of practice for low temperature hot water systems of output greater than 45 kW.
BS 7074: 1989 Parts 1 and 2
Application, selection and installation of expansion vessels and ancillary equipment for sealed systems.
BS 7671: 2008 + A3: 2015
Requirements for electrical installations, I.E.E. wiring regulations seventeenth edition.
BS 7671: Amendment 2: August
2013
Requirements for electrical installations, I.E.E. wiring regulations seventeenth edition.
BS EN 12828:2012+A1:2014
Heating systems in buildings. Design for water-based heating systems.
CP 342 (Part 2 1974):
Code of practice for centralised hot water supply-buildings other than dwellings.
IGE/UP/1 - Edition 2:
Installation pipework on industrial and commercial premises.
IGEM/UP/2: - Edition 3:
Gas installation pipework, boosters and compressors on industrial and commercial premises.
IGEM/UP/4 - Edition 4:
Commissioning of gas-fired plant on industrial and commercial premises.
IGEM/UP/10 - Edition 4:
Installation of flued gas appliances in industrial and commercial premises.
Gas Safety (Installation and Use) Regulations 1998
CIBSE: Guides
Part A Environmental Design
Part G Public health engineering
H.S.E. guidance
INDG 436 Safe management of industrial steam & hot water Water heaters
SAFED BG01Guidance on safe operation of Water heaters
Third edition of the 1956 Clean Air Act Memorandum on Chimney Heights

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SAFETY GUIDELINES
Keep these instructions near the Water heater for quick reference.
This equipment must be installed by a competent person, registered with a H.S.E. approved body. All installations must conform to the
relevant Gas Safety and Building Regulations. Health & Safety requirements must also be taken into account when installing any
equipment. Failure to comply with the above may lead to prosecution
Without written approval of the manufacturer the internals of the Water heater may not be changed. When changes are executed without
approval, the Water heater certification becomes invalid.
Commissioning, maintenance and repair must be done by a skilled installer/engineer, according to all applicable standards and regulations.
GENERAL DESCRIPTION OF SAFETY SYMBOLS USED
BANNED
A black symbol inside a red circle with a red diagonal indicates an action that should not be performed
WARNING
A black symbol added to a yellow triangle with black edges indicates danger
ACTION REQUIRED
A white symbol inserted in a blue circle indicates an action that must be taken to avoid risk
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram. The symbol indicates components of the unit and actions described
in this manual that could create an electrical hazard.
HOT SURFACES
The symbol indicates those components with a high surface temperature that could create a risk.
This symbol shows essential information which is not safety related
Recover or recycle material

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WHAT TO DO IF YOU SMELL GAS
Warning if you smell gas
No naked flames, no smoking!
Avoid causing sparks, do not switch on or off electrical equipment or lights
Open windows and doors
Shut off the main gas supply
Warn occupants and leave the building
After leaving the building alert the local gas supply company
Do not re-enter the building until it is safe to do so
Lochinvar Limited is not liable for any damage caused by inaccurately following these mounting instructions. Only
original parts may be used when carrying out any repair or service work.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not
play with the appliance.

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TECHNICAL DATA
GENERAL DATA
Product Identification Number
CE 0063 BR3190
Classification
II2H3P
Gas Appliance Type
B23, B23P, C13, C33, C43, C53, C63, C83
MODEL NUMBER
EF80
EF100
EF120
EF150
EF180
Nominal Input (Net) (kW)
14.6 - 74.3
17.2 - 92.2
26.0 - 111
34.0 - 138
45.0 - 166
Nominal Input (Gross) (kW)
16.2 - 82.5
19.1 - 102
28.9 - 123
37.8 - 153
50.0 - 184
Nominal Output
15.2 - 77.5
18.0 - 96.2
27.2 - 116
35.5 - 144
47.3-175
Heat Generator Seasonal Efficiency (%)
94.5
95
94
94
94.5
Weighted NOx Emission @0%O2 (mg/kWh)
32
31
37.5
33.5
24
Emissions of nitrogen oxides (EN15502-1:2012+A1:2015)
46
40
45
41
44
HOT WATER SUPPLY
Recovery Rate @ 44°C (l/hr)
1524
1895
2267
2813
3400
Recovery Rate @ 50°C (l/hr)
1341
1667
1995
2475
2992
Recovery Rate @ 56°C (l/hr)
1198
1489
1781
2210
2671
TECHNICAL DATA
Water Content (Litres)
5
6.5
8.3
10.4
12.9
Weight (Empty) (Kg)
68
73
78
87
96
Flow/Return Connections (B.S.P.)
1 ½”
2”
2”
2”
2”
Gas Connection (B.S.P.)
¾”
¾”
¾”
1”
1”
Flue Size (Concentric) (mm)
80/125
100/150
100/150
100/150
100/150
Flue Size (Parallel) (mm)
80-80
100-100
100-100
130-130
130-130
Waterside Pressure Loss (@ 17K T) (m WC)
5.8
4.7
4.1
6
5.5
Max. Outlet temp. (°C)
75
Operating Pressure –min./max. (bar)
1 –8
Average Flue Gas Temperature (°C)
85-95
NG G20
CO2–Flue Gas (G20) (%)
8.7 - 9.0
8.7 - 9.0
8.7 - 9.0
8.7 - 9.0
8.7 - 9.0
Gas Flow Rate (G20) (m3/hr)
1.54 - 7.86
1.82 - 9.76
2.75 - 11.8
3.60 - 14.6
4.76-17.6
Gas Supply Pressure(G20) (mbar)
20
Max Flue Gas Mass Rate (G20) (g/sec)
6.52-38.6
7.69-47.9
11.6-57.7
15.2-71.7
20.1-86.2
LPG G30/G31
CO2–Flue Gas (G30) (%)
9.3 - 10.4
9.3 - 10.4
9.3 - 10.4
9.3 - 10.5
9.3 - 10.6
Gas Flow Rate (G30) (m3/hr)
0.45 - 2.29
0.53 - 2.85
0.81 - 3.44
1.05 - 4.28
1.4-5.15
Gas Supply Pressure(G30) (mbar)
50
Max Flue Gas Mass Rate (G30) (g/sec)
6.52-38.6
7.69-47.9
11.6-57.7
15.2-71.7
20.1-86.2
LPG G31
CO2–Flue Gas (G31) (%)
9.3 - 10.3
9.3 - 10.3
9.3 - 10.3
9.3 - 10.4
9.3 - 10.5
Gas Flow Rate (G31) (m3/hr)
0.60 - 3.04
0.70 - 3.77
1.06 - 4.54
1.39 - 5.65
1.84-6.79
Gas Supply Pressure(G31) (mbar)
30/37
Max Flue Gas Mass Rate (G31) (g/sec)
6.52-38.6
7.69-47.9
11.6-57.7
15.2-71.7
20.1-86.2
ELECTRICAL DATA
Power Consumption (W)
136
142
151
214
229
Protection Class
IPX40
3.1.1 Technical data

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3.1.2 Dimensions EF80, 100 & 120
TWIN PIPE CONCENTRIC
Connections
(mm/ ” )
Twin Pipe
Concentric
EF80
EF100
EF120
EF80
EF100
EF120
FG
Flue gas
Ø80
Ø100
Ø80
Ø100
AI
Air inlet
Ø80
Ø100
Ø125
Ø150
I
Cold water
inlet
R 1½”
(swivel)
R 2”
(swivel)
R 1½”
(swivel)
R 2” (swivel)
O
Hot water
outlet
R 1½”
(swivel)
R 2”
(swivel)
R 1½”
(swivel)
R 2” (swivel)
G
Gas
R ¾” (male)
C
Condensate
flexible hose Ø25/21 x 750 mm.
dimension "D"
175
160

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3.1.3 Dimensions EF150 &180
TWIN PIPE CONCENTRIC
Connections
(mm/ ” )
Twin Pipe
Concentric
EF 150 -180
EF 150 -180
FG
Flue gas
Ø130
Ø100
AI
Air inlet
Ø130
Ø150
I
Cold water inlet
Rp 2”
(swivel)
Rp 2”
(swivel)
O
Hot water outlet
Rp 2”
(swivel)
Rp 2”
(swivel)
G
Gas (male)
R 1”
R 1”
C
Condensate
flexible hose Ø25/21 x 750 mm.
Top View
Front View
Bottom View

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3.1.4 Cascade frames
Frames are available to mount up to 4 EcoForce water heaters if required.

12
3.1.5 Dimensions cascade frames
EF150 - 180
4
1980
133
160
235
317
Rp 2
Rp 2
R 1"
590
1080
1570
935
935
3
1520
133
160
235
317
Rp 2
Rp 2
R 1"
605
1110
n.v.t.
935
935
2
1015
133
160
235
317
Rp 2
Rp 2
R 1"
605
n.v.t.
n.v.t.
935
935
1
510
133
160
235
317
Rp 2
Rp 2
R 1"
n.v.t.
n.v.t.
n.v.t.
935
935
EF100 - 120
4
1980
133
160
177
314
Rp 2
Rp 2
R ¾"
590
1080
1570
990
990
3
1520
133
160
177
314
Rp 2
Rp 2
R ¾"
605
1110
n.v.t.
990
990
2
1015
133
160
177
314
Rp 2
Rp 2
R ¾"
605
n.v.t.
n.v.t.
990
990
1
510
133
160
177
314
Rp 2
Rp 2
R ¾"
n.v.t.
n.v.t.
n.v.t.
990
990
EF80
4
1980
133
175
177
310
Rp 1½
Rp 1½
R ¾"
590
1080
1570
990
990
3
1520
133
175
177
310
Rp 1½
Rp 1½
R ¾"
605
1110
n.v.t.
990
990
2
1015
133
175
177
310
Rp 1½
Rp 1½
R ¾"
605
n.v.t.
n.v.t.
990
990
1
510
133
175
177
310
Rp 1½
Rp 1½
R ¾"
n.v.t.
n.v.t.
n.v.t.
990
990
→
mm
mm
mm
mm
mm
"
"
"
mm
mm
mm
mm
mm
Number of water heaters cascaded
L (frame)
B1 (return)
B2 (return/flow)
B3 (gas)
C (water/gas)
D1 (flow)
D2 (return)
D3 (gas)
E1 (gas 2nd water heater)
E2 (gas 3rd water heater)
E3 (gas 4th water heater)
H1 (flow/return)
H2 (gas)

13
WATER QUALITY
Water supply quality may adversely affect the efficiency performance and longevity of Water Heaters and Hot Water systems. Hard water may
cause the formation of lime scale which will reduce operating efficiency and may cause early product failure. Please note the following:-
Maximum allowed water hardness is 205 PPM or 205 mg/L CaCO3 (= 11.5°dH)
TDS (total dissolved solids) may not exceed 350 PPM
Water hardness and TDS together may not exceed 350 PPM
The pH value of the water may not be under 6.5 and not above 7.5 (measured cold)
If TDS alone or the combined value is higher than the abovementioned, the water should be heated by means of an indirect water
heating appliance.
Minimum water hardness = 80 PPM or 80 mg/L CaCO3 (= 4.5°dH)
Minimum TDS = 100 PPM
Water that’s under these minimum values normally has a pH value which is aggressive and corrosive.
If these values are exceeded a water treatment specialist should be consulted. Water Softeners and Water Conditioners may be considered,
but whichever method is selected, it should be suitable for installation with Direct Gas-fired Water Heaters. A maintenance regime will also be
required for such systems
The formation of lime scale or other solids can cause a blockage within the heat exchanger, which in turn may cause
premature failure. Such instances are not regarded as defects in manufacture and will not be covered under the
product warranty
ACCESSORIES AND UNPACKING
ANCILLARY ITEMS
A number of accessories are available for use with the EF water heater depending on site requirements as below,
contact Lochinvar Limited for prices and further information.
Item Description
Item Number
2 Water heater Mounting frame
E00-000-127
3 Water heater Mounting frame
E00-000-130
4 Water heater Mounting frame
E00-000-161
Condensate Neutralisation Kit
KIT2000
Flue System Components
See section 8.0
Un-vented system kits
Contact Lochinvar
Stainless steel buffer vessels 300-750litre
See website
www.lochinvar.ltd.uk
Glass lined buffer vessels 300-2850Litres
See website
www.lochinvar.ltd.uk
UNPACKING
The EcoForce Water heater will be supplied with the following documents and accessories:
One “Mounting Instructions” manual for the installer
One suspension bracket with locking plate and bolts
Three spare nuts for mounting the burner plate, two spare fuses for the Water heater control and a gas conversion sticker (all in a bag
attached to the front of the gas valve)
Bottom part of the siphon
Two T-pieces for the flow and return connections of the Water heater
Strap on pipe Flow sensor
After delivery, check the Water heater package to see if it everything is included and undamaged. Report any missing items or damage
immediately to Lochinvar Customer service.

14
INSTALLATION
GENERAL NOTES
The minimum clearances shown below must be maintained to enable service access and prevent operational problems:
Side
50mm
Top
350mm
Bottom
250mm
The installation area/room must have the following provisions:
230 V - 50 Hz power source socket with earth connection.
Open connection to a drain system for the condense trap waste connection.
A suitable solid load bearing wall, which must be level.
The wall used for mounting the Water heater must be able to hold the weight of the Water heater. If not, a suitable
mounting frame is available from Lochinvar Limited.See section 5.1
Other considerations related to the Water heater location.
Ventilation of the Water heater room.
Both the air Inlet and the flue gas Outlet must be connected to the outside wall and/or the outside roof using a suitable flue system.
See section 8.0
The installation area must be dry and frost-free.
The Water heater has a built-in fan that will generate noise, depending on the total heat demand. The Water heater location should
minimise any disturbance this might cause. Preferably mount the Water heater on a brick wall.
There must be sufficient lighting available in the Water heater room to work safely on the Water heater.
It is the law in the UK that a competent person registered with the HSE approved body and in accordance with the Gas Safety regulations
installs all Gas appliances.
Failure to install the appliance correctly could lead to prosecution. It is in your own interest and that of safety to ensure the appliance is installed
correctly.
6.1.1 Mounting the heater on a frame
Before mounting and installing the Water heater the following connections should be considered:
Flue gas system, pipe run and termination
Ventilation if required
Flow and return pipe connection
Condensate and pressure relief valve drain
Power supply
Gas pipework
All pipework connections to the Water heater must be self-supporting to prevent damage to the Water heater and Water
heater connections.
While marking the holes, ensure that the suspension bracket or frame is perpendicular and the Water heater does not lean forward. If necessary
adjust the position with the adjusting bolts at the lower rear side of the back panel (see drawing). When the adjusting bolts do not give
sufficient adjustment, fill the gap behind the bolts to get the Water heater in position. The exact Water heater position lies between the Water
heater hanging level and hanging slightly backwards.
The Water heater should not lean forward in the mounted position.
Lock the suspension bracket with the security cover before making any other connections to the Water heater. This security cover will prevent
the Water heater from falling off the bracket. Don't use excessive force during the mounting of the Water heater connections.

15
6.1.2 Water heater mounting detail
CONDENSATE DRAIN
The condensate drain is located in the centre of the water heater underside. The clean out bowl is supplied in a separate box within the heater
packaging; this must be fitted and the condensate water trap filled before the appliance is fired. The condensate trap is fitted with a ¾” flexible
hose that should be connected to an appropriate condensate drain, sloping continuously away from the water heater at an angle of at least 3
(50mm per metre).
The Water Resources Act requires that trade effluent is discharged to municipal sewers between pH 6.5 and 10.0. If it is determined that
these levels cannot be achieved, an in-line condensate neutralisation kit is available as an ancillary option from Lochinvar Limited. This unit
is capable of neutralising 4000 litres of condensate to a pH of 7.0 before releasing it to a drain.
FILLING THE CONDENSATE TRAP
When mounting the bottom part of the siphon, before commissioning the Water heater and/or after maintenance,
the siphon must ALWAYS be FILLED COMPLETELY with water.
This is a safety measure: the water in the siphon keeps the flue gases from leaking out of the heat exchanger via
the condensate drain.
3. Lock water heater with
locking plate and two
bolts
1. Attach mounting bracket to
wall with inclined side facing
upwards
2. Suspend water heater with
suspension bracket on mounting
bracket
4. Level water heater
using
adjusting bolts

16
GAS SUPPLY
The Lochinvar ECOFORCE™ range is suitable for use on second and third family gasses 2H - G20 - 20mbar and 3P –G30 –50mbar/G31 -
37mbar. Details relating to Natural Gas (2H) appear below; for details relating to Butane/Propane (3P) please refer to LPG FUEL.
SERVICE PIPES
The local gas distributor must be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas.
An existing service pipe must not be used without prior consultation with the local gas distributor.
METERS
A new gas meter will be connected to the service pipe by the local gas distributor contractor. An existing gas meter should be checked,
preferably by the gas distributor, to ensure that it is adequate to deal with the rate of gas supply required.
GAS SUPPLY PIPES
Supply pipes must be fitted in accordance with IGE/UP/2. Pipework from the meter to the equipment must be of adequate size. The complete
installation must be purged and tested as described in IGE/UP/1. Refer to LPG FUEL.for information on LPG pipework installation guidance.
BOOSTED GAS SUPPLIES
Where it is necessary to employ a gas pressure booster, the controls must include a low-pressure cut-off switch at the booster inlet. The local
gas distributor must be consulted before a gas pressure booster is fitted.
PLANT-ROOM CONTROL VALVE
A manual valve for plant-room isolation must be fitted in the gas supply line. It must be clearly identified and readily accessible for operation,
preferably by an exit.
EQUIPMENT GAS SYSTEM LEAK CHECK
An approved gas inlet appliance isolating valve and union should be installed for each unit in a convenient and safe position and be clearly
marked. Ensure that the gas inlet appliance isolating valve is in the OFF position. Although the equipment receives a gas leak check and gas
train component integrity check prior to leaving the factory, transit and installation may cause disturbance to unions, fittings and components.
During commissioning a further test for tightness should be carried out on the equipment gas pipework and components.
Care must be taken not to allow leak detection fluid on or near any electrical parts or connections.

17
FLUE SYSTEM
GENERAL
The Water heater has a positive pressure flue system. The available combined pressure drop for the inlet and outlet system is 200 Pa for the
complete Water heater range.
Install the horizontal flue components with an angle of 3° back in the direction of the Water heater (roughly equal
to five centimetres for every linear meter). Failure to install the flue correctly will result in a build-up of condense
within the flue pipework that will cause early component failure.
When using a wall terminal, there is the possible risk of ice building-up on surrounding parts/structures, because
the condensate will freeze. This risk should be taken into account during the design phase of the heating
installation.
EF Water heaters will produce large condense clouds especially during cold weather, consideration must be taken
as to whether this will cause a nuisance to neighbouring properties and if so alternative flue arrangements used.
The EF Water heater can operate with very low flue temperatures; as such the flue system used must be suitable
for use with condensing appliances made from either Polypropylene or stainless steel and have a temperature
class of T120.
Aluminium flue pipe must not be used on this appliance as it may lead to premature failure of the heat exchanger
and will invalidate the warranty.
Before installation of any flue system read the installation manual carefully for both the appliance and flue system
to be used. Information on the flue system Supplied by Lochinvar can be found within this manual.
FLUE SYSTEM TECHNICAL DETAILS
Model Number
EF80
EF100
EF120
EF150
EF180
FLUE DATA TYPE B23
Nominal flue diameter
mm
80
100
130
Maximum flue gas temp
°C
120
Flue gas temperature
°C
85-95
Flue draught requirements
mbar
-0.03 to -0.1
Available pressure for the flue system
Pa
200
Maximum flue gas volume
g/s
6.52 to 38.6
7.69 to 47.9
11.6 to 57.7
15.2 to 71.7
20.1 to 86.2
FLUE DATA TYPE C13 & C33
Nominal flue diameter
mm
80/125
100/150
Maximum flue gas temp
°C
120
FLUE DATA TYPE C43 & C53
Nominal flue diameter
mm
80
100
130
Maximum flue gas temp
°C
120

18
FLUE TERMINAL LOCATION
8.3.1 Flue terminal
positions
Location
Description
EF80 –EF180
A
Directly below an opening, air brick, opening windows etc.
2000
B
Above an opening, air brick, opening windows etc.
960
C
Horizontally to an opening, air brick, opening windows etc.
960
D
Below a gutter or sanitary pipework
75
E
Below the eaves
200
F
Below a balcony or car port roof
200
G
From a vertical drain or soil pipe
144
H
From an internal or external corner
300
I
Above ground, roof or balcony level
300*
J
From a surface facing the terminal
960
K
From a terminal facing the terminal
2000
L
From an opening in the car port (e.g. door, window) into the dwelling
1160
M
Vertically from a terminal on the same wall
1440
N
Horizontally from a terminal on the same wall
577
P
From a vertical structure on the roof
300
Q
Above intersection with the roof
300
8.3.2 Flue terminal minimum distances
*Any termination of a room sealed appliance shall be in such a position as will not cause a hazard to the health of persons who may be nearby
or a nuisance to other persons beyond the curtilage. The height to the centreline of the terminal shall not be less than 2m from occupied
external areas.
Detailed recommendations for the flue system are given in BS5440-1 for equipment of rated input not exceeding 70kW net, BS6644 for
equipment above 70kW net and IGE/UP/10 for equipment of rated input above 54kW net. The following notes are intended to give general
guidance only.

19
APPROVED FLUE SYSTEM
The approved flue system is not suitable for use external to the building. If external routes cannot be avoided, a
flue system manufacturer must be consulted to supply a suitable alternative.
EF80 –EF120 Water heaters are supplied for connection to a concentric flue system. If twin pipe or conventional
flue is used, a conversion kit will be required.
EF150 & EF180 Water heaters are supplied for connection to a twin pipe or conventional flue system. If concentric
flue is to be used, a conversion kit will be required.
When used as a Type C (Balanced Flued) appliance, the approved, purpose designed adaptive flue system from Lochinvar should be used.
Concentric and twin-pipe options are available.
When used as a Type B (Conventional Flued) appliance, a suitable flue system constructed of Stainless Steel or Polypropylene with a
temperature rating in excess of 120C should be used. Internal flue items are available from Lochinvar. For further details of available
components see EF Flue assembly and ancillaries’ document available at www.lochinvar.ltd.uk
Aluminium flue pipe must not be used on this appliance as it may lead to premature failure of the heat exchanger
and will invalidate the warranty.
INSTALLATION PRECAUTIONS
The approved flue system is rated to 120C max.
The heater must not be operated unless the complete flue system is installed. This includes the Water heater connections, twin-
pipe conversion kit (if required) flue pipes, air ducts (if required) and terminals. If discharging at low level, a suitable flue guard must
be installed.
Due to the condensing nature of the Water heater, long external runs should be avoided to prevent the condensate freezing within
the flue system.
During assembly of the flue system, precaution should be taken to ensure that the internal sealing ring is seated correctly.
Due to the close tolerances in the flue system, it may be necessary to use a twisting action to fit the joints together. No lubrication
other than water should be used.

20
C13, C33 CONCENTRIC FLUE SYSTEMS
C13
FLUE SYSTEM SPECIFICATION
MANUFACTURER MUELINK & GROL
TEMPERATURE CLASS T120
FLUE GAS MATERIAL PP
EACH HORIZONTAL CONCENTRIC FLUE ASSEMBLY IS SUPPLIED WITH THE FOLLOWING ITEMS:
CONCENTRIC WALL TERMINAL
WALL PLATES
90° BEND
ADDITIONAL FLUE ITEMS ARE AVAILABLE SEE FLUE ASSEMBLY AND ANCILLARIES GUIDE AT
WWW.LOCHINVAR.LTD.UK
8.6.1 C13 horizontal concentric flue system components
Model
Description
Flue Assembly Item number
EF80
Horizontal Concentric flue kit 80/125mm
EFHF002
EF100
Horizontal Concentric flue kit 100/150mm
EFHF004
EF120
Horizontal Concentric flue kit 100/150mm
EFHF004
EF150
Horizontal Concentric flue kit 130/200mm
EFHF005
EF180
Horizontal Concentric flue kit 130/200mm
EFHF005
8.6.2 C13 horizontal concentric flue assemblies
8.6.3 Horizontal terminal installation
When the heater is installed as a Type C13 appliance, the flue system should be installed as follows:
1. Determine the location of the flue terminal, taking into account minimum distances as detailed in Section 8.3.1 and the relevant
British Standards.
2. Taking care to protect the appliance from debris and dust, drill a hole in the desired location. The diameter of the hole should be no
more than 10mm greater than the diameter of the air supply pipe of the terminal.
3. Determine the required length of the terminal and cut as necessary.
NOTE: When determining the required length for the flue terminal, the outer wall plate or rosette should be flush to the wall. See
Section 8.6.4
NOTE: Once cut; remove all burrs and sharp edges.
4. Insert the terminal into the drilled hole. The terminal section should be installed level or with a fall to outside (Max. 10 mm per metre)
to prevent the ingress of water.
NOTE: When inserting the terminal, ensure the air intake section is at the bottom.
5. Fill the void between the terminal and wall with water resistant sealant.
6. Fit the wall plates or rosette using appropriate fixings.
7. Install the remainder of the flue system working progressively away from the Water heater supporting the pipes as necessary.
8.6.4 Installation of concentric terminal