Dexon OWMDH Series, Руководство пользователя

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Dexon Canada Air Systems Inc OWMDH Series Use Manual Version 07.2019
Page 2
1.1 INTRODUCTION
Dexon blower heaters are CSA Certified and designed to meet the requirements of the Canadian
Electrical Code. The OWMDH series is suitable for outdoor wall mounted applications.
1.2 PURPOSE
To provide continuous positive pressure safety ventilation to pumping station wet wells, dry wells,
buildings, vaults and chambers for the safety of the operator and to provide a less corrosive
environment for equipment.
A function of the blower heater is to temper the ventilating air in order to mitigate the risk of freezing the
ventilated space. They will maintain a preset discharge temperature of b6
°
C to +18
°
C with an
adjustable 5
°
range. If the discharge temperature drops below 0
°
C (typically) the blower heater will shut
down to prevent the ventilated space from freezing.
This equipment is suitable for use in Class 1, Division 2, Gas Groups C and D, Temp Code T2C or for
Non-Hazardous Locations only.
FEATURES

Overheat Protection

Low Temperature Shut Down

Discharge Temperature Sensor

Adjustable Fan Speed in Auto
Mode

Full Fan Speed in Manual Mode

Auto Reset

Fan Boost Start

Proof of Fan Rotation

Staged Heating for Larger Units

CSA Certified
1. GENERAL COMMENTS
OPTIONS

Various Installation Configurations; outdoor
freestanding
– SMDH series, indoor inline
– IMDH Series, indoor wall mounted-
WMDH series and outdoor wall mounted
–
OWMDH series

Voltages from 120-600VAC, 1 or 3 phase

Class 1 Div. 2, Gas Groups C & D and
Ordinary Location Certified

External Alarm Interfacing

Manual Mode Interface for Hatch/Lid
Switch or PLC etc.