Use and Care Manual

15
6-583.4
CONTROL OPERATING SEQUENCE / UNIT COMPONENTS
Upon a call for heat from the thermostat, power is supplied to
the power exhauster motor. The unit will go through a purge
period and then the direct spark igniter will be energized. At the
same time, the main valve in the combination control valve will
open to allow gas to flow to the burners. If the fan motor has
not all ready started it will start shortly. If a flame is not sensed
for any reason the main valve will close and there will be a
short purge period before ignition is tried again. If the flame is
not sensed after four tries, there will be at least a one hour wait
before ignition is tried again.
CONTROL OPERATING SEQUENCE
Figure 15.1 - Major Gas, Electrical Service, Safety and Other Components
1. Power Exhauster
2. Pressure Switch
3. Integrated Direct Spark Control
Board
4. Combination Gas Control
5. Control Transformer
6. Flame Sensor (hidden)
7. Flame Rollout Switch
8. Auto Reset Limit Control (hidden)
9. Direct Spark Igniter (hidden)
10. Manual Reset Control (hidden,
propeller 100-125 only)
➀
➁
➂
➃
➄
➅
➆
➇
➈
➉
HD30 HD45 HD60 HD75 HD100 HD125
30,000 45,000 60,000 75,000 100,000 125,000
24,000 36,000 48,000 60,000 80,000 100,000
505 720 990 1,160 1,490 1,980
523 749 653 769 565 747
44 46 45 48 50 47
10 10 12 14 12 16
25 27 36 38 42 56
1/15 1/15 1/12 1/12 1/12 1/8
1,550 1,550 1,625 1,625 1,050 1,550
S.P. S.P. P.S.C. P.S.C. S.P. P.S.C.
2.4 2.4 1.2 1.2 2.7 2.2
3.7 3.7 2.5 2.5 4.7 4.2
Models
Btu/Hr Input
Btu/Hr Output
Entering Airflow (CFM)
Outlet Velocity
Air Temp. Rise (°F)
Mounting Height (Max ft.)
Heat Throw (ft.)
Unit Total Amps
Performance - Model HD
Horsepower
RPM
Type
Amps
Motor
Data
Control Options
Control Description
Control Service Thermostat Type of Model
Code No. Voltage Voltage Gas Size
Single-Stage, Direct Spark Ignition, 100% Shut-Off with Continuous Retry 11 115V 24V natural 30-125
- Utilizes a single-stage combination gas control with ignition control.
Gas is lit with a direct spark igniter on call for heat.
21 115V 24V propane 30-125
Two-Stage, Direct Spark Ignition, 100% Shut-Off with Continuous Retry 12 115V 24V natural 75-125
- Utilizes a two-stage combination gas control with built-in ignition control.
Firing rate is 100% and 50% of full rated input. Gas is lit with a direct spark 22 115V 24V propane 75-125
igniter on call for heat.
HDB60 HDB75 HDB100 HDB125
60,000 75,000 100,000 125,000
48,000 60,000 80,000 100,000
635-1100 795-1390 1060-1850 1240-2050
0.7 0.7 0.8 0.8
40-70 40-70 40-70 45-75
3 3 3 3
1/4 1/3 1/2 1/2
P.S.C. P.S.C. P.S.C. P.S.C.
5.4 7.1 9.5 9.5
6.4 8.1 11.5 11.5
Models
Btu/Hr Input
Btu/Hr Output
Air Flow CFM Range
Static Pressure (max)
Air Temp. Rise (°F)
Motor Speeds
Unit Total Amps
Performance - Model HDB
Horsepower
Type
Amps
Motor
Data
Max
1,100
RPM
Max
1,100
Max
1,100
Max
1,100