Options and
Accessories
General :
Horizontal unit blower arrangement
-- horizontal up flow (HR - 3) available.
Vertical unit blower arrangement
-- three Vertical Up and three Vertical Down as illustrated below.
ETL Label Available
Components:
Weatherproof unit - for outdoor
installations including hinged and latched weatherproof control enclosure.
Insulated blower section - 1 inch, 2
pound density, mat face fiberglass insulation up to leaving air side of burner profile
plates.
Insulated burner section - available
on all units.
Storm proof 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 an optional item. Filter
section can also be insulated. Available for return air also.
Shut-off dampers - complete with two
position damper motor and end switch. Discharge air damper suggested for indoor
installations. Low leakage dampers are also 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.
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 or roof mounting, or indoor
suspension. Not compatible with curb mounted units. Vibration isolators are
shipped unmounted. Internal fan/motor isolation is also available (Horizontal only)
Extended grease lines - for remote
greasing of fan bearings from the control side of unit.
Panels - U.L labeled main or remote
panels.
Burner - 50 to 1 turndown available
(Not compatible with Selector)
Variable pitch sheave - for motors 15 HP and larger.
Variable pitch sheaves are standard for motors 10 HP and smaller.
Motors :
Totally enclosed, two speed, explosion proof,
automotive duty or chemical duty motors available on all units. Premium Energy Efficient
available.
Roof curbs :
Adapter frames and roof curbs available for horizontal
units. Roof curbs are shipped knocked down. Discharge duct adapters are standard on
HR-2 units with discharge dampers.
Miscellaneous :
Motor and controls can be mounted on opposite side.
Matching cooling coil, heat reclaim coil, electric heater and evaporative cooling sections
available for all models.
Electric Controls :
Fused disconnect switch - dead front
fused disconnect switch or circuit breaker mounted in cover of main control box.
Blocked intake switch - complete with
indicating light. Warning light is turned on in case of excessive pressure drop across
intake.
Low Outlet temperature shut-off - Shuts
off blower, after time delay, if unit delivers cold air due to burner failure.
Pre-purge cycle - Blower purges unit
cabinet for selected time, 7 second minimum, before burner turns on. Not normally
required unless unit can fill with combustible vapors between cycles. The item
furnished as standard with FM and IRI controls.
Circuit analyzer - provides a network
of indicating lights to check circuit continuity. Simplifies identification of
malfunctioning control.
Ultra-violet flame sensor -
ultra-violet flame sensing is used in place of standard flame rod system. Desirable
for applications where excessive condensation of moisture is encountered.
Night setback thermostat - cycles
blower-burner on basis of space temperature. Night control can either be energized
manually or by a time clock.
Note : Burner and Gas control options
on page 6
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")
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