Reznor RHC 8000 RJL User guide

0710RHC8-JLNLEN
Application instructions
RHC 8000(M) RJL
RHC 8000(M) DJL
Jacket-less, Gas-fired, Balanced-flue, Power-vented, Air heater
This document applies when installing into an air handler or as part of an air handling
system
These appliances meet the following EC Directives
Dir. 2009/142/EC:GAD
Dir. 2004/108/EC:EMC
Dir. 2006/95/EC:LVD
Dir. 2006/42/EC:MD (annexe ll, sub B)
Subject to modifications
Reznor Europe N.V. – J.& M. Sabbestraat 130 – B 8930 Menen
Tel [phone] – fax [phone]
Please read this document carefully prior to commencing building into an air handler
®

0710RHC8-JLNLEN 2/36
EC Declaration of incorporation
(Directive 2006/42/EC (annex ll, Sub B)
PROHIBITION TO PUT INTO SERVICE
Reznor Europe N.V.
J & M Sabbestraat 130
B 8930 Menen
Belgium
Herewith declares that:
Power-vented gas-fired air heaters, type:
- RHC 8000 RJL or DJL series
- Models 8050 06 8030 06 8125M.15
8075-09 8045 09 8150M.18
8075 15 8060 12 8175M.21
8090 18 8100 12 8200M.24
Are destined to be incorporated in other machines (air-handlers) or to be
combined with other machines (air-handling systems), and are for this reason not
entirely in compliance with the machinery directive 2006/42/EC).
Proper integration into the air-handling systems is required to comply with the
prescribed machinery directive.
Is in conformity with the provisions of the 2009/142/EC (GAD), 2006/95EC (LVD),
2004/108/EC (EMC) directives.
The following harmonised standards have been applied:
EN1020 & EN 60335-1.
E. Dewitte
Approvals and Certifications
Menen 1st March, 2004

0710RHC8-JLNLEN 3/36
INDEX
DECLARATION STATEMENT ..........................................................................................................2
1. DEFINITIONS ..................................................................................................................4
2. BASIC INFORMATION.......................................................................................................4
3. PRACTICAL APPLICATION ................................................................................................9
4. LIMITATIONS FOR USE...................................................................................................10
5. BURNER & CONTROLS SECTION ....................................................................................12
6. GAS CONNECTION........................................................................................................13
7. ELECTRICAL EQUIPMENT ..............................................................................................14
8. COMBUSTION CIRCUIT RHC 8000(M) RJL.......................................................................14
9. COMBUSTION CIRCUIT RHC 8000(M) DJL.......................................................................17
10. PRESSURE DROP INFORMATION ....................................................................................20
11. HEATING SECTION WITH BY-PASS CHANNELS..................................................................23
12. INSTALLATION OF RHC UNITS IN SERIES..........................................................................26
13. INSTALLATION OF AIR FAN IN RESPECT OF THE HEATING COIL ..........................................33
14. INSTALLATION OF MULTIPLE RHCXXXXDJL UNITS WITH VERTICAL FLUE OUTLET ....................34
15. TECHNICAL DATA .........................................................................................................35

0710RHC8-JLNLEN 4/36
1.0 DEFINITIONS
1.1 Jacket-less:
A gas-fired air heater supplied as a skeleton
appliance e.g. without case or cover.
1.2 Module:
The jacket-less gas-fired air heater.
1.3 Constructor:
The undertaking, which builds a module into
another casing. e.g. an air handler
1.4 Appliance;
The end product of the constructor
1.5 Compartment:
The section of an appliance into which the
module is installed
1.6 B22 Appliance:
An appliance where the air for combustion is
taken from within the area where the gas
burner is operated.
1.7 C12 Appliance:
An appliance where the air for combustion is
taken from outdoors via a duct terminating
horizontally from the appliance.
1.8 C32 Appliance
An appliance where the air for combustion is
taken from outdoors via a duct terminating
from the appliance vertically.
1.9 Dew point:
The condition, when the temperature is such
that the water vapour in the combustion
products condenses out.
2.0 BASIC INFORMATION
2.1 The instructions contained in this
document apply to the models RHC
8000(M) RJL/DJL gas fired fan assisted
warm air heaters.
2.2 Models RHC 8000(M) RJL are intended
for use in appliances as outdoors (roof
top) systems.
Models RHC 8000(M) DJL are intended
for use in appliances as indoors and must
be used with one of the following flue
systems:
B22: Vertically (through the roof) or
horizontally (through the wall) flue
system.
C12: Horizontal (through the wall) vented
balanced flue system.
C32: Vertical (through the roof) vented
balanced flue system.
2.3 The gas category for use is II2L3P
2.4 All models may only be used when
installed within a closed compartment,
e.g. an air handler.
2.5 Dimensions: we refer to the figures 1,2 &
3.
All dimensions are in mm (25.4mm= 1
inch)
2.6 Installations with C12 & C32 combustion
systems need to be installed with an
appropriate concentric vent terminal as
supplied by your distributor.
ATTENTION
ONLY RECOGNIZED AIR HANDLER MANUFACTURERS ARE AUTHORIZED TO BUILD-IN
THE HEATER MODULE. PLEASE CONTACT YOUR DISTRIBUTOR.
DANGER
ANY OTHER APPLICATION IS FORBIDDEN AND DANGEROUS. FAILURE TO COMPLY CAN
RESULT IN SEVERE PERSONAL INJURY OR DEATH AND OR PROPERTY DAMAGE.
Note: Manufacturer warranties do not apply in such circumstances.

0710RHC8-JLNLEN 5/36
Dimensions
Figure 1 : Side view
Figure 1a: RHC 8000 DJL/RJL (not 8125, 8150, 8175,8200)
(n° 59014_01)
Figure 1b: RHC 8125M, 8150M, 8175M DJL/RJL Figure 1c: RHC 8200M DJL/RJL
(n° 59710_01) (n° 59706_01 a)
1. Gas connection
2. Flue outlet
3. Electrical connection

0710RHC8-JLNLEN 6/36
Figure 2 : Top view
Figure 2a: RHC 8000 DJL/RJL ((not 8125, 8150, 8175,8200)
(n° 59014_02)
Figure 2b: RHC 8125M, 8150M, 8175M DJL/RJL
(n° 59710_02)
Figure 2c: RHC 8200M DJL/RJL
(n° 59706_02 a)

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Figure 3a : Front view RHC 8000 DJL/RJL
(n° 59012_03)
Dimensions applicable to models RHC 8000 (not 8125, 8150, 8175,8200)
(see fig. 1a - 2a & 3a)
RHC 8000 DJL/RJL RHC 8000 DJL RHC 8000 RJL
Type A B C Y A1 A2 D A1 A2 D
8030 06 531 66 100 1244 65 466 100 65 466 100
8045 09 741 50 160 1244 85 656 130 160 581 100
8050 06 531 66 100 1844 85 446 130 65 466 100
8060 12 950 125 175 1244 85 865 130 160 790 100
8075 09 741 50 160 1844 85 656 130 160 581 100
8075 15 1160 80 250 1244 85 1075 130 85 1075 130
8090 18 1369 85 300 1244 85 1284 130 85 1284 130
8100 12 950 125 175 1844 85 865 130 160 790 100

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Figure 3b: Back side view RHC 8125M, 8150M &8175M DJL/RJL
Figure 3c: Back side view RHC 8200M DJL/RJL
Dimensions applicable to model RHC 8000M
(see fig. 1b/1c –2b/2c & 3b/3c)
RHC 8000 M DJL/RJL
Type A A1 A2 A3 A4 D
8125M.15 1272 183 1089 741 531 130
8150M.18 1481 183 1298 741 741 130
8175M.21 1691 183 1508 741 950 130
8200M.24 1900 133 1767 950 950 130
(n° 59710_03)
(n° 59706_03)

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Weights (kg) ( table 1)
3.0 PRACTICAL APPLICATION
3.1 Heat exchanger compartment size.
3.1.1 The duct section or air handler compartment must be
sized in accordance with the dimensions given in
table 2 with reference to figure 4.
Mounting flanges on the modules RHC 8000(M) RJL
& DJL allow easy installation.
3.1.2 The heating module may only be fitted as shown in
figure 5. Alternative orientation is not allowed.
Table 2. Dimensions of enclosures (duct channel) for RHC 8000 heating modules re. fig 4
Duct channel & controls compartment
Model H H1 Y Y2 W W1 E
(min)
8030 06 531 461 1244 1170 400 400 400
8045 09 741 671 1244 1170 400 400 400
8050 06 531 461 1844 1770 400 400 400
8060 12 950 880 1244 1170 400 400 400
8075 09 741 671 1844 1770 400 400 400
8075 15 1160 1070 1244 1170 400 400 400
8090 18 1369 1299 1244 1170 400 400 400
8100 12 950 880 1844 1170 400 400 400
8125M.15 1272 1202 1844 1770 400 460 420
8150M 18 1481 1411 1844 1770 400 460 420
8175M.21 1691 1621 1844 1770 400 460 420
8200M.24 1900 1830 1844 1770 530 530 470
(*) The dimension ‘E’ is applicable for RJL units (outdoors) when dealing with the standard terminal outlet (PN 60 5712
300.with length 300mm. When dimension ‘E’ is increased, the RJL outlet pipe can be extended to max. length of
1000mm using ⇔100mm, thick wall seamless aluminium pipe or to max. length of 1000mm using ⇔130mm, thick
wall seamless aluminium pipe for the 8000M models.
Figure 4 : Compartment dimensions
For horizontal airflow
Type 8030 06 8045 09 8050 06 8060 12 8075 09 8075 15 8090 18 8100 12
Unit kg 60 87 80 120 110 140 160 145
Packagingkg1616201620161620
Total kg 76 103 100 136 130 156 176 165
Type 8125M.15 8150M.18 8175M.21 8200M.24
Unit kg 200 230 265 305
Packagingkg35353535
Total kg 235 265 300 340
(n° 59018)

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Figure 5 : Installation possibilities for RHC 8000(M) air heater modules
Always ensure that the inlet perforated profile plate (when required) is installed at the air ‘inlet’ side of the heat
exchanger as shown in figure 5.
4.0 LIMITATIONS FOR USE
4.1 Heat exchanger compartment
4.1.1 Minimum airflow requirement through heat exchanger enclosure :
RHC 8000(M) RJL & DJL air heaters may be used for either push or pull through air heaters.
The min. airflow duty through the heat exchanger enclosure (see fig. 4 – table 2) must be
observed as indicated in table 3.
Table 3 : Airflow duty
V1 V2 Heat output
100% - 1 stage
Heat output
50% - 2 stage
Minimum
modulating
output
MODEL
m³/h m³/h kW kW kW
8030 06 3750 4400 30.10 14.20 8.50
8045 09 5650 6600 45.50 21.40 12.90
8050 06 6200 7150 50.00 24.00 14.40
8060 12 7500 8750 60.50 28.60 17.10
8075 09 9300 10790 75.00 35.40 21.20
8075 15 9300 11900 74.98 35.27 35.27
8090 18 11200 14300 90.09 43.16 43.16
8100 12 12400 14300 100.00 46.60 28.00
V1 V2 Heat output
100% - 1 stage
Heat output
low stage
(bottom unit)
Minimum
modulating
output
MODEL
m³/h m³/h kW KW kW
8125M.15 15600 18000 125.42 51.02 25.45
8150M.18 18200 21000 149.79 74.90 36.28
8175M.21 20100 21500 172.48 98.21 47.80
8200M.24 23300 24000 200.00 101.20 50.05
V1 = min. airflow required through enclosure V2 = min. airflow required without perforated plate
Note : The RHC units can be supplied with option 523 (perforated inlet plate at the air inlet side). This perforated plate
assures the proper efficiency of the heater in the lower airflow range (below V2 (cfr. table 3)). At higher airflow this
perforated plate can be removed thus reducing the pressure drop over the heating section without loss of efficiency (see
also section 10).