Table of Contents
Advertisement
3. Pressure drop in lines between regulators, and between
second stage regulator and the appliance. Pipe size will
depend on length of pipe run and total load of all appliances.
Complete information regarding tank sizing for vaporization, recom-
mended regulator settings, and pipe sizing is available from most
regulator manufacturers and propane gas suppliers.
Since propane gas will quickly dissolve white lead and most stan-
dard commercial compounds, special pipe dope must be used. Shel-
lac-based compounds resistant to the actions of liquefied petroleum
gases such as Gasolac
®
, Stalactic
satisfactory.
Refer to the following illustration for typical propane gas installations.
First Stage
Regulator
200 PSIG
Maximum
Propane Gas Installation (Typ.)
Sizing Between First and Second Stage Regulator*
Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting.
Capacities in 1,000 BTU/hour.
Pipe or
Tubing
Tubing Size, O.D. Type L
Length,
3/8"
1/2"
5/8"
Feet
10
730
1,700
3,200
20
500
1,100
2,200
30
400
920
2,000
40
370
850
1,700
50
330
770
1,500
60
300
700
1,300
80
260
610
1,200
100
220
540
1,000
125
200
490
900
150
190
430
830
175
170
400
780
200
160
380
730
To convert to capacities at 15 psig settings - multiply by 1.130
To convert to capacities at 5 psig settings - multiply by 0.879
Propane Gas Piping Chart I
Sizing Between Single or Second Stage Regulator 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/hour.
Pipe or
Tubing
Tubing Size, O.D. Type L
Length,
3/8"
1/2"
5/8"
3/4"
Feet
10
39
92
199
329
20
26
62
131
216
30
21
50
107
181
40
19
41
90
145
50
18
37
79
131
60
16
35
72
121
80
13
29
62
104
100
11
26
55
90
125
10
24
48
81
150
9
21
43
72
200
8
19
39
66
250
8
17
36
60
*Data in accordance with NFPA pamphlet NO. 54
Propane Gas Piping Chart II
®
, Clyde's
®
or John Crane
5 to 15 PSIG
(20 PSIG Max.)
Continuous
11" W.C.
Second Stage
Regulator
Nominal Pipe Size
Schedule 40
3/4"
7/8"
1/2"
5,300
8,300
3,200
3,700
5,800
2,200
2,900
4,700
1,800
2,700
4,100
1,600
2,400
3,700
1,500
2,200
3,300
1,300
1,900
2,900
1,200
1,700
2,600
1,000
1,400
2,300
900
1,300
2,100
830
1,200
1,900
770
1,100
1,800
720
Nominal Pipe Size
Schedule 40
7/8"
1-1/8"
1/2"
3/4"
1"
1-1/4" 1-1/2"
501
935
275
567
1,071
2,205
346
630
189
393
732
1,496
277
500
152
315
590
1,212
233
427
129
267
504
1,039
198
376
114
237
448
913
187
340
103
217
409
834
155
289
89
185
346
724
138
255
78
162
307
630
122
224
69
146
275
567
109
202
63
132
252
511
100
187
54
112
209
439
93
172
48
100
185
390
XIII. CIR
XIII. CIRCUL
XIII. CIR
XIII. CIR
XIII. CIR
D
- A
F
UCTWORK
IR
Duct systems and register sizes must be properly designed for the
CFM and external static pressure rating of the furnace. Ductwork
should be designed in accordance with the recommended methods
of "Air Conditioning Contractors of America" Manual D.
A duct system must be installed in accordance with Standards of the
National Board of Fire Underwriters for the Installation of Air Condi-
®
are
tioning, Warm Air Heating and Ventilating Systems. Pamphlets No.
90A and 90B.
A closed return duct system must be used, with the return duct con-
nected to the furnace. NOTE: Ductwork must never be attached to
the back of the furnace. Supply and return connections to the fur-
nace may be made with flexible joints to reduce noise transmission.
To prevent the blower from interfering with combustion air or draft
when a central return is used, a connecting duct must be installed
between the unit and the utility room wall. A room, closet, or alcove
must not be used as a return air chamber.
When the furnace is used in connection with a cooling unit, the fur-
nace should be installed in parallel with or on the upstream side of
the cooling unit to avoid condensation in the heating element. With
a parallel flow arrangement, the dampers or other means used to
control the flow of air must be adequate to prevent chilled air from
entering the furnace and, if manually operated, must be equipped
with means to prevent operation of either unit unless the damper is
in the full heat or cool position.
3/4"
When the furnace is installed without a cooling coil, it is recommended
7,500
that a removable access panel be provided in the outlet air duct.
4,200
4,000
This opening shall be accessible when the furnace is installed and
3,700
shall be of such a size that the heat exchanger can be viewed for
3,400
visual light inspection or such that a sampling probe can be inserted
3,100
2,600
into the airstream. The access panel must be made to prevent air
2,300
leaks when the furnace is in operation.
2,100
1,900
When the furnace is heating, the temperature of the return air enter-
1,700
ing the furnace must be between 55°F and 100°F.
1,500
F
- R
T
ILTERS
EAD
R
A
D
ETURN
IR
UCTWORK
Filters must be used with this furnace. Discuss filter maintenance
with the building owner. Filters do not ship with this furnace, but
must be provided by the installer. Filters must comply with UL900 or
CAN/ULCS111 standards. If the furnace is installed without filters,
the warranty will be voided.
3,307
2,299
On upflow units, guide dimples locate the side return cutout
1,858
1,559
locations. Use a straight edge to scribe lines connecting the
1,417
dimples. Cut out the opening on these lines. NOTE: An
1,275
1,066
undersized opening will cause reduced airflow.
976
866
787
665
Refer to Minimum Filter Area tables to determine filter area require-
590
ments.
26
CULA A A A A TIN
CUL
CUL
TIN
TIN
TING AIR & FIL
G AIR & FIL
G AIR & FIL
G AIR & FILTER
CUL
TIN
G AIR & FIL
LOW
S
B
I
HIS
ECTION
EFORE
NSTALLING
TERS S S S S
TER
TER
TER
T
HE
Advertisement
Table of Contents
Troubleshooting
