Lochinvar EKW-HCB117 EcoKnight XL 2024 Water Heater Range User Guide

: July 25, 2024
: Lochinvar

Table of Contents

Lochinvar EKW-HCB117 EcoKnight XL 2024 Water Heater Range
Product Information
Product Usage Instructions
FAQ
GENERAL
HEATER FLUE INFORMATION
CONVENTIONAL (EXHAUST ONLY) FLUE SYSTEMS TYPE B23
ROOM SEALED HORIZONTAL FLUE SYSTEM C13
ROOM SEALED VERTICAL FLUE SYSTEM C33
TWIN PIPE FLUE SYSTEM C53
C63 FLUE SYSTEMS + COMMON FLUE (SUPPLIED BY OTHERS)
FLUE SYSTEM SIZING EXAMPLE
ORDER FORM AND NOTES
ABOUT COMPANY
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Lochinvar EKW-HCB117 EcoKnight XL 2024 Water Heater Range

Product Information

Specifications:

Model: EKW-Herald V3 Flue Guide
Models Covered: EKW-HCB117, EKW-HCB190, EKW-HCB235, EKW-HCB295
Language: English
Version: V1.1 JUNE 2024

Product Usage Instructions

Flue Categories:
Lochinvar EcoKnight water heaters and Herald boilers are certified for use on the following flue categories:

B23: Open flue – Combustion air drawn directly from the room.
C13: Closed Flue – Horizontal flue terminal with both air inlet and flue exhaust in the same pressure zone.
C33: Closed Flue – Vertical flue terminal with both air inlet and flue exhaust in the same pressure zone.
C53: Closed Flue – Horizontal or Vertical flue terminal with air inlet and flue exhaust in different pressure zones.
C63: Closed Flue – Connected to a separately approved system for combustion air and discharge of combustion products.

Installation Requirements:
All installations should comply with the following requirements:

BS5440-1:2008 for appliances up to 70kW net input.
The Clean Air Act for installations exceeding 333kW nett input.

Water Heater Terminal Locations:
Refer to Drawing 1 and Table 1 in the manual for details on water heater terminal locations based on letters A to Q.

FAQ

What are the different flue categories the product is certified for?
The product is certified for B23, C13, C33, C53, and C63 flue categories.
What installation requirements should be followed?
Installations should comply with BS5440-1:2008 for appliances up to 70kW net input and The Clean Air Act for installations exceeding 333kW nett input.

GENERAL

Lochinvar EcoKnight water heaters and Herald boilers are certified for use on the following flue categories:

Installation type	Category	Description

B23

|

Open flue

| An appliance intended to be connected to a flue that evacuates the products of combustion to the outside of the room containing the appliance. The combustion air is drawn directly from the room.
C13| Closed Flue| An appliance connected to either a concentric or twin- pipe flue system with a Horizontal flue terminal. Both the air inlet and flue exhaust must be in the same pressure zone.
C33| Closed Flue| An appliance connected to either a concentric or twin- pipe flue system with a Vertical flue terminal. Both the air inlet and flue exhaust must be in the same pressure zone.

C53

|

Closed Flue

| An appliance connected to a twin-pipe flue system with a Horizontal or Vertical flue terminal. Both air inlet and flue exhaust may be in different pressure zones.

C63

|

Closed Flue

| An appliance intended to be connected to a separately approved and marketed system for the supply of combustion air and discharge of combustion products (i.e. other than that supplied by the water heater

manufacturer).

All installations should comply with the requirements of:

For appliances up to 70kW net input- BS5440-1:2008- 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.
Refer to drawing 1 and table 1 for details of terminal locations.
For appliances over 70kW net input- IGEM/UP/10 Edition 4 +A: 2016 – Installation of flued gas appliances in industrial and commercial premises, specific attention should be paid to the following sections.
- Refer to drawing 1 and table 1 for details of terminal locations.
- Horizontal terminations shall be located according to the minimum distances given in table 1, andsubject to the risk assessment criteria shown in table 2.
- Horizontal flue terminations (other than for fan dilution systems) must not be installed for any singleappliance or group of appliances with a total nett input exceeding 333kW net heat input.
- For any single appliance or group of appliances with a total net heat input exceeding 333 kW, the general requirements of IGEM/UP/10 Edition 4 +A: 2016 shall apply and approval must be sought from the Local Authority prior to commencement of the installation.
The Clean Air Act for installations exceeding 333kW nett input.

Location| Description| EKW- HCB117| EKW- HCB190| EKW- HCB235| EKW- HCB295
---|---|---|---|---|---
A| Directly below an opening, air brick, opening windows etc.| 2500| 2500| 2500| n/a
B| Above an opening, air brick, opening windows etc.| 940| 1468| 1793| n/a
C| Horizontally to an opening, air brick, opening windows etc.| 940| 1468| 1793| n/a
D| Below a gutter or sanitary pipework| 200| 200| 200| n/a
E| Below the eaves| 200| 200| 200| n/a
F| Below a balcony or car port roof| Not recommended see UP10 risk assessment
G| From a vertical drain or soil pipe| 150| 150| 150| n/a
H| From an internal or external corner| 2087| 3775| 4816| n/a
I| Above ground, roof or balcony level| 300| 300| 300| n/a
J| From a surface facing the terminal| 2087| 3775| 4816| n/a
K| From a terminal facing the terminal| 2908| 4318| 5188| n/a

L

|

From an opening in the car port (e.g. door, window) into the dwelling

| Not recommended see UP10 risk assessment
M| Vertically from a terminal on the same wall| 940| 1468| 1793| n/a
N| Horizontally from a terminal on the same wall| 940| 1468| 1793| n/a
P| From a vertical structure on the roof| 425| 620| 740| n/a
Q| Above intersection with the roof| 425| 620| 740| n/a

The table below is an excerpt from IGEMUP10 and should be used in conjunction with that document
Further to the requirements in IGEM/UP/10 Edition 4 +A: 2016 Section 8 under clause 8.7.3.3 and Figure 7 the following risk assessment gives guidance for the positioning of horizontal flues. This form should be completed before work commences and undertaken by a person who is competent to undertake the risk assessment.

HEATER FLUE INFORMATION

Model Number| | EKW-HCB117| EKW-HCB190| EKW-HCB235| EKW-HCB295
---|---|---|---|---|---
FLUE DATA TYPE All except C63
Nominal flue diameter| mm| 150| 150| 150| 200
Nominal air inlet diameter| mm| 100| 100| 100| 200*
Minimum flue gas temp| °C| 35
Average flue gas temp| °C| 70
Maximum flue gas temp| °C| 120
Maximum equivalent length| m| 27| 27| 16| 24.9
Equivalent length 90° bend| mm| 7.1| 7.1| 7.1| 1.1
Equivalent length 45° bend| mm| 1.8| 1.8| 1.8| 0.7

CONVENTIONAL (EXHAUST ONLY) FLUE SYSTEMS TYPE B23

Item no EKWCF010

Starter kit Model 117-B23 1
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 1| 0.3
EXPANDER Ø130mm – Ø150mm| M70262| 1| 0.3
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 1| 7.1
APPLIANCE AIR INLET GUARD Ø100mm| M86787| 1| 0
Total equivalent length mtr| 8
Item no EKWCF011

Starter kit Models 190-235-B23 2
Item| Item No| No| Equivalent length mtr
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 1| 7.1
APPLIANCE AIR INLET GUARD Ø100mm| M86787| 1| 0
Total equivalent length mtr| 7.4
All versions additional flue available

Item| Item No| Equivalent length mtr
EXTENSION Ø150mmPP CUT TO LENGTH (2000mm)| LV310695| 2
EXTENSION Ø150mmPP CUT TO LENGTH (1000mm)| LV310694| 1
BEND 45° Ø150mm PP| LV310664| 1.8
BEND 90° Ø150mm PP| LV310665| 7.1
ROOF TERMINAL 150MM| M70359| 1
WALL CLAMP Ø150mm| M87196| n/a
FLAT ROOF FLASHING (170mm) ALU| LV302509| n/a
SLOPING ROOF FLASHING Ø100/150mm (25°-45°) LEAD| LV306017| n/a

Item no EKWCF012

Starter kit Model 295
Item| Item No| No| Equivalent length mtr
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
AIR INLET SCREEN (160MM)| LM900205A| 1| 0
EXPANDER PP 150-200| M70342| 1| 0.3
Total equivalent length mtr| 0.6
Model 295 additional flue available

Item| Item No| Equivalent length mtr
VERTICAL TERMINAL Ø200mm PP| LV310683| 8.8
BEND 45° Ø200mm PP| LV310667| 1.1
BEND 90° Ø200mm PP| LV310668| 0.7
EXTENSION Ø200MM (500MM) PP| LV310696| 0.3
EXTENSION Ø200mm(1000mm) PP| LV310697| 0.6
EXTENSION Ø200mm (2000mm) PP| LV310698| 1.2
WALL CLAMP Ø200mm| M87198| n/a
FLAT ROOF FLASHING Ø200mm| LV302328| n/a

ROOM SEALED HORIZONTAL FLUE SYSTEM C13

Item no EKWHF010

Starter kit Model117 C13 1
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 2| 0.6
EXPANDER Ø130mm – Ø150mm| M70262| 2| 0.6
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 2| 14.2
HORIZONTAL TERMINAL Ø150/220mm ALU| M76561| 1| 5
Total equivalent length mtr| 20.7
Item no EKWHF011

Starter kit Models 190-235 C13 2
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 1| 0.6
EXPANDER Ø130mm – Ø150mm| M70262| 1| 0.6
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 2| 14.2
HORIZONTAL TERMINAL Ø150/220mm ALU| M76561| 1| 5
Total equivalent length mtr| 20.7
All versions additional flue available

Item

|

Item No

| Equivalent length mtr
EXTENSION Ø150mmPP CUT TO LENGTH (2000mm)| LV310695| 2
EXTENSION Ø150mmPP CUT TO LENGTH (1000mm)| LV310694| 1
BEND 45° Ø150mm PP| LV310664| 1.8
BEND 90° Ø150mm PP| LV310665| 7.1
WALL CLAMP Ø150mm| M87196|

ROOM SEALED VERTICAL FLUE SYSTEM C33

Item no EKWVF010

Starter kit Model117 C33 1
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 2| 0.6
EXPANDER Ø130mm – Ø150mm| M70262| 2| 0.6
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 2| 14.2
CONCENTRIC VERTICAL TERMINAL Ø150/220mm ALU| M86929| 1| 5
Total equivalent length mtr| 20.7
Item no EKWVF011

Starter kit Models190-235 C33 2
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 1| 0.6
EXPANDER Ø130mm – Ø150mm| M70262| 1| 0.6
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 2| 14.2
CONCENTRIC VERTICAL TERMINAL Ø150/220mm ALU| M86929| 1| 5
Total equivalent length mtr| 20.7
All versions additional flue available

Item| Item No| Equivalent length mtr
EXTENSION Ø150mmPP CUT TO LENGTH (2000mm)| LV310695| 2
EXTENSION Ø150mmPP CUT TO LENGTH (1000mm)| LV310694| 1
BEND 45° Ø150mm PP| LV310664| 1.8
BEND 90° Ø150mm PP| LV310665| 7.1
WALL CLAMP Ø150mm| M87196|

TWIN PIPE FLUE SYSTEM C53

Item no EKWTF010

Starter kit Model117 C53 1
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 2| 0.6
EXPANDER Ø130mm – Ø150mm| M70262| 2| 0.6
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 2| 14.2
AIR INLET TERMINAL Ø150mm| LG800015A| 1| 1
ROOF TERMINAL 150MM| M70359| 1| 2
Total equivalent length mtr| 18.7
Item no EKWTF011

Starter kit Models190-235 C53 2
Item| Item No| No| Equivalent length mtr
EXPANDER Ø100mm – Ø130mm PP| M85126| 2| 0.6
EXPANDER Ø130mm – Ø150mm| M70262| 2| 0.6
SAMPLING POINT Ø150mm PP| M70326| 1| 0.3
BEND 90° Ø150mm PP| LV310665| 2| 14.2
AIR INLET TERMINAL Ø150mm| LG800015A| 1| 1
ROOF TERMINAL 150MM| M70359| 1| 2
Total equivalent length mtr| 18.7
All versions additional flue available

Item| Item No| Equivalent length mtr
EXTENSION Ø150mmPP CUT TO LENGTH (2000mm)| LV310695| 2
EXTENSION Ø150mmPP CUT TO LENGTH (1000mm)| LV310694| 1
BEND 45° Ø150mm PP| LV310664| 1.8
BEND 90° Ø150mm PP| LV310665| 7.1
WALL CLAMP Ø150mm| M87196|

C63 FLUE SYSTEMS + COMMON FLUE (SUPPLIED BY OTHERS)

In general, Water heaters are certified with their own purpose supplied Concentric or Twin Pipe flue systems, C63 certified appliances allow the installer to use other flue systems when installing the Water heaters however, they must be of a suitable minimum standard as per Table below.

Model Number| Item| EKW-HCB117| EKW-HCB190| EKW- HCB235| EKW-HCB295
---|---|---|---|---|---
Minimum flue gas temp| °C| 35| 35| 35| 35
Average flue gas temp| °C| 70| 70| 70| 70
Maximum flue gas temp| °C| 120| 120| 120| 120
Flue gas mass rate (@9.0% CO2)| g/sec| 57.72| 80.73| 102.18| 129.94
Pressure available at the flue outlet| Pa| 169| 183| 190| 196
CE string flue gas material| EU standard| Temperature class| Pressure class| Resistance to condensate| Corrosion resistance class| Metal: liner specifications
---|---|---|---|---|---|---
Min required PP| EN 14471| T120| P1| W| 1| n/a
Min required INOX| EN 1856-1| T120| P1| W| 1| L20040
CE string flue gas

material

| Soot fire

resistance class

| Distance to

combustible material

| Plastics

location

| Plastics fire

behaviour

| Plastics

enclosure

|
Min required PP| O| 30| I of E| C/E| L
Min required INOX| O| 40| n/a| n/a| n/a
Material| Water heater| dnom| Doutside| Linsert
---|---|---|---|---
PP| EKW117| 100| 100 +/-0.6| 50 +20/ -2
PP| EKW190| 150| 150 +/-0.6| 50 +20/ -2
PP| EKW235| 150| 150 +/-0.6| 50 +20/ -2
PP| EKW295| 150| 150 +/-0.6| 50 +20/ -2

Caution:

When installing the water heater or boiler as a Type C63 appliance, it should be noted that the terminals must not be installed on opposite sides of the building.
The maximum allowable recirculation rate is 10% under wind conditions.
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.

FLUE SYSTEM SIZING EXAMPLE

A EKW117 is to be installed in a C13 configuration as shown below. The maximum flue run for this model is 27meters as shown in the table on page 6.

Model	Model 117
Diameter = 150mm	Quantity
Starter Kit includes 2no 90 bends, sampling point and terminal	1
90 Bend	3
4.5m Length
Total resistance	46.5

The total resistance exceeds the maximum flue run of this model so this flue system is not acceptable. An alternative flue system would be required such as B23.