P G T P; Ropane As Anks And Irculating Ir And Ilters; Uctwork Ir Low; Piping. - Amana GDH8 Installation Instructions Manual

P G T
ROPANE AS ANKS AND
I
F THE GAS FURNACE IS INSTALLED IN A BASEMENT
,
AREA OR CONFINED SPACE IT IS STRONGLY RECOMMENDED TO
CONTACT A PROPANE SUPPLIER TO INSTALL A GAS DETECTING WARNING
DEVICE IN CASE OF A GAS LEAK
S
•
INCE PROPANE GAS IS HEAVIER THAN AIR
SETTLE IN ANY LOW AREAS OR CONFINED SPACES
P
•
ROPANE GAS ODORANT MAY FADE
EXCEPT WITH A WARNING DEVICE
A gas detecting warning system is the only reliable way to
detect a propane gas leak. Rust can reduce the level of odorant
in propane gas. Do not rely on your sense of smell. Contact a
local propane gas supplier about installing a gas detecting
warning system. If the presence of gas is suspected, follow
the instructions on Page 3 of this manual.
All propane gas equipment must conform to the safety stan-
dards of the National Board of Fire Underwriters, NBFU Manual
58.
For satisfactory operation, propane gas pressure must be 10
inch WC at the furnace manifold with all gas appliances in
operation. Maintaining proper gas pressure depends on three
main factors:
1. Vaporization rate, depending on temperature of the liquid,
and "wetted surface" area of the container or containers.
2. Proper pressure regulation. (Two-stage regulation is
recommended for both cost and efficiency).
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, rec-
ommended 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
standard commercial compounds, special pipe dope must be
used. Shellac-based compounds resistant to the actions of
liquefied petroleum gases such as Gasolac
® ®
Clyde's or John Crane
Refer to the following illustration for typical propane gas instal-
lations and piping.
First Stage
Regulator
200 PSIG
Maximum
Propane Gas Installation (Typ.)
P
IPING
WARNING
,
AN EXCAVATED
.
,
ANY LEAKING GAS CAN
.
,
MAKING THE GAS UNDETECTABLE
.
® , Stalactic
are satisfactory.
5 to 15 PSIG
(20 PSIG Max.)
Continuous
11" W.C.
Second Stage
Regulator
P G P
ROPANE AS IPING
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 Size, O.D. Type L
Tubing
Length,
3/8" 1/2"
Feet
10 730 1,700
20 500 1,100
30 400 920
40 370 850
50 330 770
60 300 700
80 260 610
100 220 540
125 200 490
150 190 430
175 170 400
200 160 380
Sizing Between Second Stage and Appliance R egulator*
Maxim um Propane Capacities lis ted are bas ed on 2 ps ig pres s ure drop at 10 ps ig s etting.
C apacities in 1,000 BTU /hour.
Pipe or
Tubing S ize, O.D. Type L
Tubing
Length,
3/8" 1/2" 5/8"
Feet
10 39 92 199
20 26 62 131
30 21 50 107
40 19 41 90
50 18 37 79
60 16 35 72
80 13 29 62
100 11 26 55
125 10 24 48
150 9 21 43
200 8 19 39
250 8 17 36
C A
IRCULATING IR AND
D - A F
UCTWORK IR LOW
N
EVER ALLOW THE PRODUCTS OF COMBUSTION
,
MONOXIDE TO ENTER THE RETURN DUCT WORK OR CIRCULATION AIR
.
SUPPLY
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 recom-
mended 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 Conditioning, Warm Air Heating and Ventilating Systems.
Pamphlets No. 90A and 90B.
A closed return duct system must be used, with the return duct
connected to the furnace. NOTE: Ductwork must never be
attached to the back of the furnace. For installations requiring
more than 1800 CFM, use a bottom return or two sided return.
Supply and return connections to the furnace may be made
with flexible joints to reduce noise transmission. To prevent the
blower from interfering with combustion air or draft when a cen-
tral return is used, a connecting duct must be installed be-
tween the unit and the utility room wall. Furnace is shipped
with the top flanges in the flat position. Before installing a coil
or ducts, the flanges must be bent 90°. A room, closet, or
alcove must not be used as a return air chamber.
22
C
HARTS
5/8" 3/4" 7/8"
3,200 5,300 8,300
2,200 3,700 5,800
2,000 2,900 4,700
1,700 2,700 4,100
1,500 2,400 3,700
1,300 2,200 3,300
1,200 1,900 2,900
1,000 1,700 2,600
900 1,400 2,300
830 1,300 2,100
780 1,200 1,900
730 1,100 1,800
Nominal Pipe S ize
Schedule 40
3/4" 7/8" 1-1/8" 1/2" 3/4"
329 501 935 275 567
216 346 630 189 393
181 277 500 152 315
145 233 427 129 267
131 198 376 114 237
121 187 340 103 217
104 155 289 89 185
90 138 255 78 162
81 122 224 69 146
72 109 202 63 132
66 100 187 54 112
60 93 172 48 100
F
ILTERS
WARNING
,
INCLUDING CARBON
Nominal Pipe Size
Schedule 40
1/2" 3/4"
3,200 7,500
2,200 4,200
1,800 4,000
1,600 3,700
1,500 3,400
1,300 310
1,200 2,600
1,000 2,300
900 2,100
830 1,900
770 1,700
720 1,500
1" 1-1/4" 1-1/2"
1,071 2,205 3,307
732 1,496 2,299
590 1,212 1,858
504 1,039 1,559
448 913 1,417
409 834 1,275
346 724 1,066
307 630 976
275 567 866
252 511 787
209 439 665
185 390 590