T
HERMO
90 / 90 S
4TECHNICAL DATA
4-1
4. Technical Data (Standard Measure)
As long as no threshold values are given, the following
technical data is understood to include tolerances of
±10% usual for heaters at an ambient temperature of
+68 °F and at nominal voltage and conditions.
Electrical Components:
Control unit, combustion air fan motor and fuel dosing
pump, glow pin, control switch and timer are either of the
12V or 24V type.
The components temperature limiter, temperature sensor
and flame sensor are identical in the 12V and 24V units.
Coolant Heater Operation Thermo 90 / 90 S Thermo 90 / 90 S
Gasoline Diesel
Type BW 80 DW 80
Mark of conformity – S231 – S232
Heater type Coolant heater with Ferro-Tec Technology
Heat output Maximum 31,000 Btu/hr
Control range 6,800 - 26,000 Btu/hr 6,100 - 26,000 Btu/hr
Type of fuel Gasoline Diesel #1, #2 and Arctic
Fuel consumption Maximum 0.28 gal/hr
(US gallon) Control range 0.06 - 0.26 gal/hr 0.05 - 0.24 gal/hr
Rated voltage 12 Volt 12 or 24 Volt
Operating voltage range 10 ... 15 Volt 10 ... 15 or 20 ... 30 Volt
Rated power consumption Maximum 90 W
with circulation pump Control range 37 - 83 W 37 - 83 W
(without vehicle blower)
Permitted ambient temperature:
Heater: -operation –40° ... +230 °F
-storage –40° ... +266 °F
Control unit: -operation –40° ... +167 °F
-storage –40° ... +185 °F
Fuel dosing pump: -operation –40° ... +68 °F –40° ... +104 °F
-storage –40° ... +185 °F
Permitted over-pressure Maximum 29 psi.
(heat exchanger)
Heat exchanger capacity 0.04 US gal.
Maximum combustion air +104 °F
intake temperature
Coolant circuit minimum capacity 1.6 US gal.
Volume flow of circulation pump 7.25 US gal/min.
against 2.0 psi.
CO2 in exhaust 10 ... 12.0 Vol.-%
(permissible operating range)
CO2-setting values at approx. +68 °F 0 ft. 1640 ft. 3280 ft.
and geographical height above SL 10% 10.6% 11.3%
Dimensions of heater Length 12.2 in. (14.0 in.)
1)
(Tolerance ± 0.11 in.) Width 05.24 in.
Height 08.66 in.
Weight 10.5 lb
1)
Thermo 90 S with control unit mounted on heater
