1583.52 Reznor RHC - Industrial And Commercial Heating, … · 2013-09-30 · Introduction Reznor gas fired heating coils are designed for inclusion in air handling units to provide

RHC

GAS FIRED HEATING COILS

CI/SfB56.83 X

Introduction

Reznor gas fired heating coils are designed for

inclusion in air handling units to provide a high

efficiency gas fired heating section. They may

also be used for replacing steam and hot

water coils in existing units and plenum

systems to enable changeover from central

boiler plant to decentralised gas fired systems.

The units also provide an ideal heating

module for installation in ductwork systems for

HVAC installations and a variety of industrial

applications including drying and curing.

Features

• High efficiency units qualify for enhanced

capital allowances

• Application flexibility – all units can

accommodate both vertical and

horizontal airflows

• Choice of controls – close temperature

control – on/off, high/low or modulating

• Longer life – heat exchanger tubes are

expanded into a collection box, eliminating

welds. They are available with a choice of

stainless steel or aluminised steel tubes

• Low cost – simple installation reduces costs

• Optimum choice – 6 different tube lengths

offer the designer a wide choice to suit the

air handling unit profile

Model Range

A comprehensive range of units with heat

outputs from 11kW to 900kW and a wide

choice of dimensions offer the designer

maximum flexibility. Where higher heat

outputs are required modules can be placed

side by side with right hand and left hand

access to satisfy heat requirements up to

1800kW. The units are available for either

indoor applications (DJL option) or outdoor

applications (RJL option).

RHC 4000

• Four pass heat exchanger

• Minimum 91% high thermal efficiency

• Heat outputs from 11kW to 200kW

per module

• Modular monobloc units up to 400kW

RHC 8000

• Two pass heat exchanger

• Minimum 91% high thermal efficiency

• Heat outputs from 30kW to 300kW

per module

• Modular monobloc units up to 900kW

• Optional air diffuser for low

airflow applications

• Special combinations up to 2400kW are

also available. Please consult Reznor

RHCGAS FIRED REZNOR HEATING COILS

Energy Efficiency

The gas fired heating coils provide 91%

minimum thermal efficiencies directly at

the point of use thereby eliminating the

distribution and standby losses normally

associated with central boiler plant.

Optimised energy usage and reduced

running costs result from:

• High turn down ratio

• Instant response to changing conditions

• Reduced pre-heat period

• Elimination of residual thermal mass on

plant shut down

CE Certification

All heating coils are fully CE certified

and are supplied with comprehensive

fitting instructions.

The RJL coils are provided complete with a

matched flue terminal and air inlet which have

been tested and CE certified against the effect

of wind attack.

Each unit is fully test-fired prior to despatch;

optional on-site commissioning and full after

sales service is available through a nationwide

network of in-house service engineers.

Reduced Installation Costs

The application of gas fired heating coils

directly at the point of use eliminates the need

for a central boiler plant with all the associated

costs and space requirements for the plant

room, boiler, pumps, pipework and insulation.

Gas fired heating coils also remove the risk

of freezing and subsequent costs of frost

protection for the heating coils and pipework,

a factor which is particularly relevant for

external or rooftop units.

Simple Installation

The heating coils are designed for fast

and simple installation and only require

“coil slides” for incorporation within an

Air Handling Unit.

The coils are designed to allow the specifier

a choice of cross section dimensions for each

heat output to allow close matching to cooling

coil sizes and the aspect ratio of the AHU.

For reduced pressure drop and optimised

specific fan power, an integral bypass can

be incorporated within the coil framework.

A factory fitting service is also available

to install the heating coils into free issue

sections. Alternatively the coils can be

supplied as a complete heater section for

fitting into ductwork systems or industrial

process applications.

Airflow Direction

The heating coils may be used in either a

horizontal or vertical configuration and are

suitable for various airflow directions.

The Government’s Enhanced Capital

Allowance scheme actively encourages

industry and commerce to reduce energy

consumption by promoting the use of

energy efficient equipment. The RHC coils

are Energy Technology Listed to allow

qualifying end users to claim enhanced

capital allowances.

This symbol verifies that the product has been

independently assessed and qualifies for the

ECA scheme, an upfront tax relief enabling

businesses that invest in energy-saving

equipment to claim 100% first-year capital

allowances against their taxable profits.

Enhanced Capital Allowances (ECA)

The Advantages of Gas Fired Heating Coils

RHCGAS FIRED REZNOR HEATING COILS

RHC Gas Fired Heating Coils

Single coils provide a turndown ratio of

approx 4:1 whilst modular monobloc

units with higher heat outputs can

provide a turndown ratio of up to 24:1.

Multi-try ignition system with full safety

sequence control provides additional

reliability.

Monobloc modular format eliminates

the possibility of total loss of heating as

a result of a single component failure.

Fan assisted flue allows for

smaller flue diameters with

option for balanced flue wall

terminals.

The heating coils provide very

even heating across the face of

the coil and operate at a maximum

surface temperature of 450°C.

The lower surface temperature

reduces radiant heat to the

structure of the AHU and

surrounding components.

Radiation shields fitted around

the coils eliminate the need for

additional shields and optimise

heat transfer into the air-stream.

RHC coils for external units

are supplied complete with

CE certified combustion air

inlets and flue terminals.

Utilising the full height of the AHU allows the

design of the heating coil to be very compact

and can significantly reduce the length of the

AHU to save cost, space and weight.

Lower operating temperature and

even heat distribution provide

enhanced life expectancy.

Comprehensive choice of coil

dimensions allows units to be

closely matched to the AHU

size, to maintain uniform air

flow with reduced pressure loss.

Modular format ensures close

matching to heat demand for

optimum energy efficiency.

Traditional Gas Fired Heat Exchangers

Fixed dimensions of traditional heat exchangers

result in transformation sections often being

required, with resultant increased pressure drop.

Increased length adds to cost and weight of

unit while also increasing space requirements.

Total loss of heating capacity in the event of

a single component failure on main burner.

Lower thermal efficiency, circa 82% on traditional gas fired heat exchangers.

Higher operating temperatures, typically up to 650°C, results in increased

thermal stress and heat radiation to AHU frame and components.

Monobloc Units

Up to three modules can be supplied

assembled as a single monobloc to provide

heat outputs up to 900kW. Monobloc modules

may be installed side by side to increase heat

outputs up to 1800kW. Special combinations

up to 2400kW are also available, please

consult Reznor.

The monobloc units combine high thermal

efficiency with an excellent turndown ratio of

up to 24:1, depending on the output and

control system selected, to optimise energy

usage. The modular approach provides

improved reliability, allowing large heat output

units to be utilised without the risk of loss of

total heating on failure of a single component.

Where higher airflows are required a top or

side bypass can be incorporated to minimise

the pressure drop through the heating coil.

Optional Control Vestibules

Units are also available with an enclosed

control vestibule. The flanged vestibule

allows the width of the Air Handling Unit to

be minimised with the control vestibule

projecting outside.

The vestibules may be specified for either

internal or outdoor units. Outdoor vestibules

are supplied complete with flue termination

and combustion air inlet. Vestibules have a

durable powder coat finish to RAL 7035,

other colours are available on request.

Higher airflow units may be fitted with a side

bypass to minimise the pressure drop through

the heating coil. Top bypass arrangement is

not available for units fitted with a vestibule.

Units supplied complete with controls vestibule

are also ideal for applications where the heat

module is to be installed into ductwork.

Monobloc Twin Unit

Monobloc Triple Unit

DJL Model – Internal Application

RJL Model – External Application

RHC 4000GAS FIRED REZNOR HEATING COILS

DIMENSION DATA

Model 4011.03 4015.04 4018.05 4024.05 4030.06 4036.08

Height A mm 305 458 458 559 559 837

Width B mm 547 547 547 677 677 677

Depth C mm 590 590 590 648 648 648

TECHNICAL DATA

Model 4011.03 4015.04 4018.05 4024.05 4030.06 4036.08

Nominal heat output kW 11 15 18 24 30 36

Natural gas consumption1 m3/h 1.26 1.68 2.10 2.79 3.49 4.20

LPG consumption1 kg/h 0.94 1.26 1.57 2.10 2.61 3.14

Gas connection2 Rc ¾ ¾ ¾ ¾ ¾ ¾

Flue diameter (RJL) mm 100 100 100 100 100 100

Flue / combustion air diameter (DJL) mm 80 80 100 100 100 130

Electrical consumption (230V 1Ph 50 Hz) kW 0.153 0.153 0.153 0.153 0.153 0.153

Net weight kg 20 25 30 45 53 70

Minimum airflow3 (standard unit) m3/h 1465 1940 2270 2880 3290 5281

Pressure drop @ minimum airflow Pa 15 15 15 20 15 25

Maximum airflow3 m3/h 4100 5400 6350 8000 9200 11650

Note: 1. Natural gas G20 – calorific value 10.48kW/m3 GCV. Propane G31 calorific value 14.0kW/kg GCV.

2. Not supply line size.

3. Please consult Reznor for pressure drop data where more than one module is used in series.

C

A

B

380

DIMENSION DATA

Model 4050.06 4060.07 4075.09 4100.12 4110.13 4125.15 4150.18 4175.21 4200.24

Height A mm 531 601 741 950 1132 1272 1481 1691 1900

Width B mm 1049 1049 1049 1049 1049 1049 1049 1049 1049

Depth C mm 800 800 800 800 930 930 930 930 930

Control compartment D mm 400 400 400 400 420 420 420 420 470

TECHNICAL DATA

Single Module 4050.06 4060.07 4075.09 4100.12 4110.13 4125.15 4150.18 4175.21 4200.24

Nominal heat output kW 50 60 75 100 112 125 150 175 200

Natural gas consumption1 m3/h 5.92 7.12 8.73 11.45 13.02 14.63 17.44 20.19 22.94

LPG consumption1 kg/h 4.43 5.33 6.53 8.57 9.60 10.78 12.85 14.88 16.91

Gas connection2 Rc ¾ ¾ ¾ ¾ 1¼ 1¼ 1¼ 1¼ 1¼

Flue diameter (RJL) mm 100 100 100 100 130 130 130 130 130

Flue / combustion air diameter (DJL) mm 130 130 130 130 130 130 130 130 130

Electrical consumption (230V 1Ph 50 Hz) kW 0.153 0.153 0.153 0.153 0.282 0.282 0.282 0.282 0.960

Net weight kg 90 100 120 149 200 220 250 279 313

Minimum airflow (standard unit) m3/h 3900 4700 5700 7500 8600 9600 12300 14100 16300

Pressure drop @ minimum airflow Pa 40 40 37 40 70 68 44 43 44

Twin Module 4050.06 4060.07 4075.09 4100.12 4110.13 4125.15 4150.18 4175.21 4200.24

Nominal heat output kW 100 120 150 200 224 250 300 350 400

Minimum airflow (standard unit) m3/h 5950 7150 8800 11700 13600 15600 17500 20600 23300

Pressure drop @ minimum airflow Pa 150 150 150 156 352 359 178 189 165



Table for twin modules shows total heat output and airflow data.

For gas consumption and flue connections please multiply single module data as appropriate.

C

A

B

D


DIMENSION DATA

Model 8030.06 8045.09 8060.12 8075.15 8090.18

Height A mm 531 741 950 1160 1369

TECHNICAL DATA

Single Module 8030.06 8045.09 8060.12 8075.15 8090.18

Nominal heat output kW 30 45 60 75 90

Natural gas consumption1 m3/h 3.53 5.34 7.12 8.72 10.48

LPG consumption1 kg/h 2.64 4.00 5.33 6.43 7.72

Gas connection2 Rc ¾ ¾ ¾ ¾ ¾

Flue diameter (RJL) mm 100 100 100 130 130

Flue / combustion air diameter (DJL) mm 100 130 130 130 130

Electrical consumption (230V 1Ph 50 Hz) kW 0.153 0.153 0.153 0.153 0.153

Net weight kg 60 87 120 140 160

Minimum airflow (standard unit) m3/h 4400 6600 8750 11900 14300

Pressure drop @ minimum airflow Pa 40 40 40 40 40

Maximum airflow with optional diffuser plate m3/h 3750 5650 7500 9300 11200

Pressure drop with diffuser plate Pa 85 90 90 85 90

Twin Module 8030.06 8045.09 8060.12 8075.15 8090.18




Maximum airflow with optional diffuser plate m3/h 3750 5650 7500 9300 11200

Pressure drop with diffuser plate Pa 90 100 100 100 100

Triple Module 8030.06 8045.09 8060.12 8075.15 8090.18






Table for twin and triple modules shows total heat output and airflow data.


400

A

1244

400

DIMENSION DATA

Model 8050.06 8075.09 8100.12 8125.15 8150.21 8175.21 8200.24

Height A mm 531 741 950 1272 1481 1691 1900

Depth C mm 400 400 400 400 400 400 530

Control compartment D mm 400 400 400 420 420 420 550

TECHNICAL DATA

Single Module 8050.06 8075.09 8100.12 8125.15 8150.21 8175.21 8200.24

Nominal heat output kW 50 75 100 125 150 175 200

Natural gas consumption1 m3/h 5.92 8.73 11.45 14.63 17.44 20.19 23.28

LPG consumption1 kg/h 4.43 6.53 8.57 10.78 12.85 14.88 17.16

Gas connection2 Rc ¾ ¾ ¾ 1¼ 1¼ 1¼ 1¼

Flue diameter (RJL) mm 100 100 100 130 130 130 130

Flue / combustion air diameter (DJL) mm 130 130 130 130 130 130 130

Electrical consumption (230V 1Ph 50 Hz) kW 0.153 0.153 0.153 0.282 0.282 0.282 0.960

Net weight kg 80 110 145 200 230 265 300

Minimum airflow (standard unit) m3/h 7150 10750 14300 18000 21000 21500 24000

Pressure drop @ minimum airflow Pa 50 50 50 50 50 45 40

Maximum airflow with optional diffuser plate m3/h 6200 9300 12400 15600 18200 18650 20900

Pressure drop with diffuser plate Pa 100 112 112 100 100 80 80

Twin Module 8050.06 8075.09 8100.12 8125.15 8150.21 8175.21 8200.24




Maximum airflow with optional diffuser plate m3/h 9200 9300 12400 15600 18200 20100 23300

Pressure drop with diffuser plate Pa 100 125 125 125 125 125 150

Triple Module 8050.06 8075.09 8100.12 8125.15 8150.21 8175.21 8200.24








C

A

1844

D


DIMENSION DATA

Model 8225.18 8250.20 8275.22 8300.24

Height A mm 1912 2078 2244 2410

TECHNICAL DATA

Single Module 8225.18 8250.20 8275.22 8300.24

Nominal heat output kW 225 250 275 300

Natural gas consumption1 m3/h 25.8 28.7 31.6 34.5

LPG consumption1 kg/h 19.3 21.5 23.6 25.8

Gas connection2 Rc 1¼ 1¼ 1¼ 1¼

Flue diameter (RJL) mm 130 130 130 130

Flue / combustion air diameter (DJL)3 mm 150 150 150 150

Electrical consumption (230V 1Ph 50 Hz) kW 0.960 0.960 0.960 0.960

Net weight kg 487 501 516 530

Minimum airflow (standard unit) m3/h 33600 37200 40800 43800

Pressure drop @ minimum airflow Pa 40 40 40 40

Maximum airflow with optional diffuser plate m3/h 22800 25200 27600 29700

Pressure drop with diffuser plate Pa 35 35 35 35

Twin Module 8225.18 8250.20 8275.22 8300.24




Maximum airflow with optional diffuser plate m3/h 29000 29000 35500 38500

Pressure drop with diffuser plate Pa 80 70 80 80

Triple Module 8225.18 8250.20 8275.22 8300.24






3. For 150mm diameter flue, consult Reznor.



600

A

2435

550

Typical Flue Arrangements

Balanced Flue Terminals

RJL modules for installation in external or

rooftop units are CE certified complete with

combustion air inlet hoods and flue terminals

(supplied loose).

For installation in naturally ventilated plant rooms DJL

modules may be conventionally flued. Where plant

rooms are sealed or subject to negative pressure, a

range of matching balanced flue terminals and sealed

pipework is available.

D

A

CE

F

B

G

F

E

A

G

B

DC

FLUE DIMENSIONS

Model Vertical Roof Terminal Horizontal Wall Terminal

∅80mm ∅100mm ∅130mm ∅80mm ∅100mm ∅130mm

A mm 1290 1380 1850 780 780 800

B mm 130 140 225 130 140 225

C mm 165 165 220 80 100 133

D mm 150 150 200 125 150 200

E mm 500 550 630 540 540 610

F mm 530 600 1220 380 380 460

G mm 170 230 340 170 220 340

Maximum wall thickness mm n/a n/a n/a 370 370 420

Note: For 150mm diameter flue, consult Reznor (8225 - 8300 DJC models only)

Docum

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refe

rence n

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GB

/WA

R/0

11/1

208

Reznor UK Limited Park Farm Road

Folkestone Kent CT19 5DR

United Kingdom

Telephone: 01303 259141

Facsimile: 01303 850002

Email: [email protected]

Website: www.reznor.co.uk

Reznor UK is a registered trademark of AmbiRad Limited. Because of

continuous product innovation, AmbiRad reserves the right to change

product specification without due notice.

Heat RecoveryA wide range of heat recovery heat exchangers and thermal wheels for incorporating within

air handling units and other air systems is also available from Reznor UK.

Cross Plate Heat Exchangers

A new generation of recuperative plate heat exchanger, designed for incorporation

into air handling units or as part of an air distribution system. Cross plate heat

exchangers provide complete separation between the exhaust and fresh air streams.

Counterflow Heat Exchangers

A new generation of high efficiency plate heat exchangers with extended heat

exchange area. The counterflow heat exchangers offer very high efficiency heat

recovery in excess of 80% for typical HVAC applications and offer a viable

alternative to rotary heat exchangers for lower airflow applications.

Rotary Heat Exchangers

The highest form of thermal energy recovery in air handling systems, rotary heat

exchangers deliver high efficiencies with high air volumes in limited space. They are

a well proven means of energy recovery, normally recovering up to 80% in typical

HVAC applications.

Desiccant Enthalpy Dehumidification Rotors

The desiccant rotor is a further development of the traditional energy recovery rotor.

The matrix has a very high capacity for moisture absorption. It absorbs moisture

from the air which flows through the matrix and transfers the moisture as the wheel

rotates. The desiccant rotor is ideal for total energy recovery and dehumidification

with or without additional regeneration air heating.

Documents

1583.52 Reznor RHC - Industrial And Commercial Heating, … · 2013-09-30 · Introduction Reznor gas fired heating coils are designed for inclusion in air handling units to provide