Reznor RHC 8000 DJL, Application Instructions

Page: 10 / 36

0710RHC8-JLNLEN 10 / 36
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 L
IMITATIONS FOR
U
SE
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).