Brochure
15
6-189.9
ACCESSORIES
Table 15.1 - Field Installed Accessories
Feature
Model
HD HDB PDP BDP PTP
Cabinet and Air Mover
Vertical Deflector Blades - Allows directional discharge air control in the left and right 
directions.
• • • • •
Downward Air Deflector Hoods - Available in 30°, 60°, and 90° configurations these 
deflector hoods enable the unit to be mounted higher while still providing heat to the building 
occupants. Refer to page 16 for further details.
• • • • •
Vibration Isolation Kit - Minimizes unit vibration transmission to the building structure. • •
Pipe Hanger Adapter Kits - Allows the unit to be suspended by 3/4" pipe from the standard 
3/8" holes found in the top of the unit.
• • •
Discharge Transition for Polytube - Allows for the connection of polytube (not included) to 
the discharge of the unit.
• •
Blower Enclosure with or without Filter Rack - Totally encases the motor and blower 
assembly. Optional filters provide filtering of the air prior to entering the heater.
• •
Discharge Velocity Generating Nozzle - Four varieties of velocity generating nozzles 
allow for increased application flexibility. These nozzles increase mounting height while also 
directing the airflow to the desired locations. Refer to page 17 for further details.
•
Belt Guard - Provides protection for building occupants as well as service people from the 
drive belt and sheaves.
•
Controls
Natural Gas to Propane Gas Conversion Kit - Provides all required parts as well as 
instructions to convert a natural gas unit to propane gas.
• • • • •
Single or Two-Stage Room Thermostats - See Table 15.2 for details. • • • • •
Room Thermostat Guard - Clear plastic for room thermostats. Guard is locking type and 
comes with two keys.
• • • • •
Summer/Winter Switch - Allows a choice of unit fan operation. In the summer position, the 
fan runs continuously for ventilation while allowing the gas controls to fire on a call for heat 
from the thermostat. In the winter position, the fan runs intermittently on a call for heat from 
the thermostat.
• • • • •
Stepdown Transformers - Used to operate propeller units on 208/230/460/575V/3Ph 
supply voltage. Also may be required for control circuits for blower units. Refer to Table 14.1 
for further selection details.
• • • • •
Control Relays - This single pole single throw relay consists of a 24V coil with a maximum 
contact rating of 18 amps at 115V.
• • • • •
Gas Pressure Regulator - Fisher Type S-100, 3/4 inch pressure regulator for 1/2 to 50 psi 
inlet pressure capacity, 30 MBH to 400 MBH.
• • • • •
Energy Saver Kit - Used to lower total energy costs by reducing stratified air in high 
mounting height applications. This kit consists of a controller with a SPDT (16A @ 120V) 
switch and a temperature rage of 30° - 100°F.
• • • • •
Table 15.2 - Field Installed Thermostats
Single-Stage 
Thermostats
Type Description
Room 
Thermostat
White Rodgers 1C20-101: 50° - 90°F, 1.0A @ 24VAC
White Rodgers 1C26-101: 50° - 90°F, 1.0A @ 24VAC, Heat/Off & Fan On/Auto Switches
Two-Stage 
Thermostats
Room - Digital Honeywell TH5220D1003: 40° - 90°F, 1.0A @ 24VAC, System Heat/Cool/Auto/Off, Fan On/Auto
Duct
Johnson Controls A350 Electronic Temp Control with Sensor and S350 Stage Adder (Blower units only)
Honeywell T678A1015: 0° - 100°F, 20' capillary tube (Blower units only)
342844 6-189.9.indd 15 11/11/14 9:59 PM










