Electrical - Page 3

Horizontal unit blower arrangement - horizontal up flow (HR-3) available.

Vertical unit blower arrangements - three Vertical Up and three Vertical Down as illustrated below.

Weatherproof unit - for outdoor installations with blower section insulated and hinged, latched weatherproof control enclosure.

Insulated blower section - available on all units.

Insulated electric section - available on all units.

Shut-off dampers - complete with two position damper motor and end switch. Discharge air damper recommended for outdoor installations and inlet air damper suggested for indoor units. Low leakage dampers are also available.

Stormproof weatherhood - with birdscreen. Installed on air intake of horizontal, HR-1 and HR-2, weatherproof units. Not available with optional vertical blower arrangements.

Birdscreen - for installation on the air intake of units with optional vertical blower arrangements.

Filter section - with "V" or "Z" frames for mounting 2 inch throwaway, cleanable or extended surface filters. A clogged filter switch with indicating light is available as on optional item. Filter section can also be insulated.

Combination filter/mixing box - complete with mixing dampers and linkage and a choice of 2 inch filters. A clogged filter switch and indicating light is available as an optional item.

Damper motors - either modulating or two position motors are available.

Discharge air louvers - adjustable horizontal or vertical bladed louvers are available for mounting on the blower outlet. These louvers can be combined for double deflection air control.

Discharge duct adapter - standard on HR-2 units with discharge damper and mounted on curbs furnished by Hastings.

Service platform - with guardrail per OSHA standard. Service platforms are available for indoor horizontal units only.

Vibration isolators - either "rubber-in-shear" or spring type for floor mounting, roof mounting, or indoor suspension. Vibration isolators are shipped unmounted. Internal fan/motor isolation is also available.

Extended grease lines - for remote greasing of fan bearings from control side of unit.

Variable pitch sheave - for motors 1 5 HP and larger. Variable pitch sheaves are standard for motors 10 HP and smaller.

Motors:

Totally enclosed motors are available on all units. Two speed, 1800/1200 RPM motors can be substituted on most SBE models.

Full line break contactors - disconnecting contactors can be furnished in place of de-energizing contactors.

10-step controller - A 1 0-step electric heater controller may be furnished with any of the Electroflo heating systems. This increases the control increments above those listed in the Selection Table, SCR solid state controls are also available on all models.

Blocked intake switch - complete with indicating light.

Damper controls - modulating damper motor controllers.

Non-fused disconnect switch - shipped for field mounting.

Low outlet temperature shut-off - fan motor is shut down on heat failure to prevent delivery of cold air.

Roof Curbs:

Adapter frames and roof curbs available for horizontal units. Roof curbs are shipped knocked down.

Miscellaneous:

Motor and controls can be mounted on opposite side. Matching cooling coil, heat reclaim coil, direct gas-fired heater and evaporative cooling section available on all Electroflo units.

VERTICAL UNIT BLOWER DISCHARGE ARRANGEMENTS

(Standard support channel heights 112 thru 218-24 ", 222 thru 233-26")