8
WARNING
TO PREVENT PROPERTY DAMAGE OR SERIOUS PERSONAL INJURY DUE TO
FIRE OR EXPLOSION CAUSED BY A PROPANE GAS LEAK, INSTALL A GAS
DETECTING WARNING DEVICE.
IF THE PROPANE GAS UNIT IS INSTALLED IN AN EXCAVATED AREA OR A
CONFINED SPACE, A WARNING DEVICE IS REQUIRED DUE TO:
• PROPANE GAS IS HEAVIER THAN AIR AND ANY LEAKING GAS CAN
SETTLE IN ANY LOW AREAS OR CONFINED SPACES.
• PROPANE GAS ODORANT MAY FADE, MAKING THE GAS UNDETECTABLE
EXCEPT WITH A WARNING DEVICE.
ELECTRICAL WIRING
THERMOSTAT LOCATION
Mount the thermostat approximately five feet above the floor,
in an area that has an inside, vibration-free wall and has good
air circulation.
Movement of air must not be obstructed by furniture, door,
draperies, etc. The thermostat must not be mounted where it
will be affected by drafts, hot or cold water pipes or air ducts in
walls, radiant heat from fireplace, lamps, the sun, television,
etc. Consult the Instruction Sheet packaged with thermostat
for mounting instructions.
All units have one stage of heating and one stage of
mechanical cooling. Units which will have economizers may
use thermostats with one or two stages of cooling.
*PG1360***1A ONLY: These models have two stages of
mechanical cooling. A 1-stage heat, 2-stage cooling
thermostat is recommended for these models.
The units are designed for operation on 60 hertz current and
at voltages as shown on the rating plate. All internal wiring in
the unit is complete. It is necessary to bring in the power supply
to the contactor as shown on the unit wiring diagram which is
supplied with each unit. 24 volt wiring must be connected
between the unit control panel and the room thermostat.
C
3
2
1
6
5
9
8
11 12
Y
R
4
7
10
G
W
G
WYR
2
T1
C22
P2
P3
FUSE 3 AMP MAX
P112
1
7
445
3
3
6
9FS
6
10
7
F1
11
8
11
10
12
9
K1
12
T2
BREAK FOR TWO STAGE
COMPRESSOR
24VAC 50/60Hz 400mA MAX.
L1DI
K2
L1 HEATUNUSED
K4
K3
COOL
1068-83-400A
MODEL
1068-400
B18099-18
ANSI Z21.20 AUTOMATIC IGNITION SYSTEM
L2L2L2L2
ECON
120
135
150
SPEED-UP
LOW VOLTAGE
CONNECTOR
Low Voltage Wiring
TANKS AND PIPING
Complete information regarding tank sizing for vaporization,
recommended regulator settings and pipe sizing is available
from most regulator manufacturers and propane gas suppliers.
Since propane gas will quickly dissolve white lead or most
standard commercial compounds, special pipe dope must be
used. Shellac base compounds resistant to the actions of
liquefied petroleum gases such as Gasolac®, Stalactic®,
Clyde’s® or John Crane® are satisfactory.
See below for typical propane gas piping.
200 PSIG
Maximum
5 to 15 PSIG
(20 PSIG Max.) Continuous
11" W.C.
Second Stage
Regulator
First Stage
Regulator
Typical Propane Gas Piping
Sizing Between First and Second Stage Regulator
Maximum Propane Capacities listed are based on 1 PSIG Pressure Drop at 10
PSIG Setting. Capacities in 1,000 BTU/HR
3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4"
30 309 700 1,303 2,205 3,394 1,843 3,854
40 265 599 1,115 1,887 2,904 1,577 3,298
50 235 531 988 1,672 2,574 1,398 2,923
60 213 481 896 1,515 2,332 1,267 2,649
70 196 446 824 1,394 2,146 1,165 2,437
80 182 412 767 1,297 1,996 1,084 2,267
90 171 386 719 1,217 1,873 1,017 2,127
100 161 365 679 1,149 1,769 961 2,009
150 130 293 546 923 1,421 772 1,613
200 111 251 467 790 1,216 660 1,381
250 90 222 414 700 1,078 585 1,224
300 89 201 378 634 976 530 1,109
350 82 185 345 584 898 488 1,020
400 76 172 321 543 836 454 949
To convert to Capacities at 15 PSIG Settings -- Multiply by 1.130
To convert to Capacities at 5 PSIG Settings -- Multiply by 0.879
PIPE OR
TUBING
LENGTH,
FEET
NOMINAL PIPE SIZE,
SCHEDULE 40
TUBING SIZE, O.D., TYPE L
Sizing Between Single or Second Stage R egulator and Appliance*
Maximum Propane Capacities Listed are Based on 1/2" W.C. Pressure Drop at
11" W.C. Setting. Capacities in 1,000 BTU/HR
3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4" 1" 1-1/4" 1-1/2"
10 49 110 206 348 539 291 608 1,146 2,353 3,525
20 34 76 141 239 368 200 418 788 1,617 2,423
30 27 61 114 192 296 161 336 632 1,299 1,946
40 23 52 97 164 253 137 284 541 1,111 1,665
50 20 46 86 146 224 122 255 480 985 1,476
60 19 42 78 132 203 110 231 436 892 1,337
80 16 36 67 113 174 94 198 372 764 1,144
100 14 32 59 100 154 84 175 330 677 1,014
125 12 28 52 89 137 74 155 292 600 899
150 11 26 48 80 124 67 141 265 544 815
200 10 22 41 69 106 58 120 227 465 697
250 9 19 36 61 94 51 107 201 412 618
300 8 18 33 55 85 46 97 182 374 560
350 7 16 30 51 78 43 89 167 344 515
400 7 15 28 47 73 40 83 156 320 479
*DATA IN ACCORDANCE WITH NFPA PAMPHLET NO. 54
NOMINAL PIPE SIZE,
SCHEDULE 40
TUBING SIZE, O.D., TYPE L
PIPE OR
TUBING
LENGTH,
FEET
Table 3 - Propane Gas Pipe Sizing