AAON RQ NextGen Series, Установка, эксплуатация и обслуживание

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77
Gas or Electric Heating
The unit is designed to heat a given amount
of air while operating. If this amount of air is
greatly reduced, approximately 1/3 during
the heating season, the gas heat exchanger or
electric heating coil may overheat, and may
cut the burner or heater off entirely by action
of the safety high temperature limit devices
which are factory mounted at the heat
exchanger and supply fan areas.
Airflow must be adjusted after installation to
obtain an air temperature rise within the
range specified on the unit rating plate at the
required external static pressure.
If overheating occurs with a gas heat
exchanger, or the gas supply fail to shut off,
shut off the manual gas valve to the furnace
before shutting off the electrical supply.
Prolonged overheating of the heat exchanger
will shorten its life.
If unit has not been selected as a 100%
outside air unit (makeup air unit) the return
air duct must be sealed to the unit and the
return air temperature must be maintained
between 12.8°C (55 ° F) and 26.7°C (80 ° F).
Table 25 - Electric and Gas Heating Capacities
Model
Option B2
Gas Heat Electric Heat
Input Capacity Output Capacity Capacity
MBH MBH kW (208V)
kW (230V, 380V ,
460V, 575V)
1 =
Heat 1
60.0 48.6 7.5 10
2 = Heat 2 15.0 20
3 =
Heat 3
100.0 81.0 22.5 30
4 = Heat 4 30.0 40
5 = Heat 5 140.0 113.4
6
= Heat 6
7 = Heat 7 160.0 129.6
Table 26 - Auxiliary Electric Heating Capacities
Feature 3 kW (208V) kW (230V, 380V 460V,
575V)
*
K
= Heat K 7.5 10.0
*L = Heat L 15.0 20.0
*M =
Heat M
22.5 30.0
*N = Heat N 30.0 40.0