Steam & Water Heating - Page 3

OPTIONS AND ACCESSORIES

General :

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

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

Components:

Weatherproof unit -for outdoor installations with insulated blower section and unit controls mounted in NEMA 3d enclosure.

Insulated coil section - available on all units.

Inlet air shut-off damper - replaces mixing dampers for 100% outside air applications on VA or VB sequences. Low leakage dampers are also available.

Stormproof weatherhood - with rain shield and bridscreen, Installed on air intake of horizontal, HR-1 and HR-2, weatherproof units. Not available with optional vertical blower arrangement

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

Filter section - with 2" cleanable or extended surface filters. Filter section can also be insulated.

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.

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. Not available with SB-112 or SB-115 models.

Variable pitch sheave - for motors 15HP and larger. Variable pitch sheaves are standard for motors 10 HP and smaller.

Motors :

Totally enclosed, two speed, explosion proof and chemical duty motors are available on all units.

Coils :

• High pressure steam coils with cupro-nickel tubes.
• Copper fins.

Electric Controls :

• Clogged fitter switch with indicating light.
• Automatic mixed air temperature controller.
• Low outlet temperature shut-off.
• Fused disconnect switch (dead front type) or circuit breaker mounted in cover of main control box.

Roof Curbs :

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

Miscellaneous :

Motor and controls can be mounted on opposite side.

Matching cooling coil and evaporative cooling sections for all models.

VERTICAL UNIT BLOWER DISCHARGE ARRANGEMENTS

(All sections and components are supported by special base frame and vertical support channels)

(Standard support channel heights 112 thru 218-24", 222 thru 233-26", 240-48")