 Fan
Forward curved squirrel cage rated in accordance with AMCA
Standards.
Motor
Open drip-proof type on adjustable mount.
Drive
Adjustable sheaves with V-belts, enclosed within the air
intake section.
Bearings
Prelubricated.
Shaft
Solid, machined, cold-rolled steel with first critical
speed limited to at least 25% maximum operating speed.
Burner
Gas(G) -
Power type, for use with natural, manufactured, mixed, liquefied petroleum gas or
liquefied petroleum gas/air mixture. Included in the standard manifold are main gas
electric shut-off valve, main and pilot gas pressure regulators for maximum inlet
pressure. Minimum inlet pressure gauge is 4 ounces.
Light Oil (LO)
- High pressure, oil atomizing type with mechanically-forced draft suitable for burning
fuels through# 2 grade to a maximum of 40 S.S.U at 100 degrees F.The unit incorporates an
oil pump, combustion air fan and drive combustion air damper, oil strainer and oil
pressure gauge.
Safety Controls
Burner Control -
Automatic burner control shuts down burner(oil or gas )in the event of power or flame
failure.
Fan and Limit Switch
- Bonnet-mounted combination switch provides for automatic or continuous fan
operation and for burner shutdown on excessive temperature.
Observation Port -
This port is used to observe flame characteristics and as a pressure relief door.
Temperature Control
- On-off space thermostat( for field mounting and wiring)
OPTIONS AND ACCESSORIES
Dust Inlet
side or end enclosure plates replace screened panels when intake air is ducted to the
heater.
Flatbank filters
throwaway or cleanable filters mounted on both sides and rear of unit.
V-Bank filters throwaway
or cleanable filters in V-bank section on P-35/50 only.
Service platform
available for P-35/50 horizontal models only. Shipped unmounted.
High gas pressure regulator
for gas pressure from 8 ounces to 50 PSIG.
Oil pressure system
suction system is standard. For pressure system an oil pressure regulator is
furnished with either a standard or high pressure filter.
Nozzles set of 2
nozzles for P-20/25 or 3 nozzles for p-35/50 with nozzle mounting pan. Specify either 45 o
or 90 o . 24 nozzle extension is also available
Discharge hood aluminum
discharge hood with adjustable blades on P-20/25 and three discharge grilles for p-35/50.
Direct drive exhauster included
with IRI approval controls. shipped unmounted for field installation.
FM or IRI approval specified
controls available for either gas or oil-fired heaters.
Line connection thee-phase
dead front fused disconnect switch mounted in cover of main control box ,single phase,
circuit breaker mounted in box on heater.
Summer Winter switch "Summer-Off-
Winter" selector switch mounted on heater.
Remote selector switch "On-Off"
toggle switch on terminal box shipped for field wiring.
DIMENSIONS -MODELS P-20 AND P-25

| A |
32-1/4 |
| B |
9 |
| C |
47-5/8 |
| D |
3 |
| E |
35-1/4 |
| F |
8-3/4 |
| G |
69 |
| H |
27-1/4 |
| J |
30-1/4 |
| K |
37-3/8 |
| L |
1-3/8 |
| M |
1-3/4 |
| N |
13-1/2 |
All Dimensions in Inches
| TOP DUCT OUTLET=32-1/4 x 13-1/2 O.S |
DUCT INLETS(OPENINGS)= |
27-1/8 x 18 1/2 (SIDES) |
| 22-1/2 x 18 1/2 (ENDS) |
DIMENSIONS- MODELS P-35 and P-50

| A |
52 |
| B |
12-1/8 |
| C |
74-3/16 |
| D |
6-1/4 |
| E |
8-3/4 |
| F |
58-1/4 |
| G |
8-3/4 |
| H |
90 |
| J |
40-1/4 |
| K |
47-3/4 |
| L |
33 |
| M |
2 |
All Dimensions in Inches
TOP DUCT OUTLET
=52 X 15 O.S |
DUCT
INLETS(OPENINGS) = |
45-1/8 X 27-1/8(SIDES) |
| 23 X 25-7/8 (REAR) |
| 43-7/8 X 24-7/8 (BASE) |
HORIZONTAL AND INVERTED MODELS ARE ALSO
AVAILABLE |