Circulating Air & Filters; Uctwork Ir Low; Ottom Eturn Ir Pening Pflow Odels ] - Amana AMS9 Installation Instructions Manual

presence of gas is suspected, follow the instructions on Page 5 of
this manual.
All propane gas equipment must conform to the safety standards of
the National Board of Fire Underwriters, NBFU Manual 58.
For satisfactory operation, propane gas pressure must be 11 inch
w.c. 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, 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 installa-
tions.
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
UCTWORK IR
Duct systems and register sizes must be properly designed for the
CFM and external static pressure rating of the furnace. Design the
ductwork in accordance with the recommended methods of "Air
Conditioning Contractors of America" Manual D.
Install the duct system 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 con-
nected to the furnace. NOTE: Ductwork must never be attached to
the back of the furnace. Flexible joints may be used for supply and
return connections 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. Never use a room, closet, or alcove as a
return air chamber.
® are
B R
OTTOM ETURN
The bottom return air opening on upflow models utilizes a "lance
and cut" method to remove sheet metal from the duct opening in the
base pan. To remove, simply press out the lanced sections by hand
to expose the metal strips retaining the sheet metal over the duct
opening. Using tin snips, cut the metal strips and remove the sheet
metal covering the duct opening. In the corners of the opening, cut
the sheet metal along the scribe lines to free the duct flanges. Us-
ing the scribe line along the duct flange as a guide, unfold the duct
flanges around the perimeter of the opening using a pair of seamer
pliers or seamer tongs. NOTE: Airflow area will be reduced by ap-
proximately 18% if duct flanges are not unfolded. This could cause
performance issues and noise issues.
E
DGES OF SHEET METAL MAY BE SHARP.
WHEN REMOVING SHEET METAL FROM THE DUCT OPENING.
3/4"
7,500
CUT USING TIN SNIPS
4,200
4,000
3,700
3,400
3,100
2,600
2,300
2,100
1,900
1,700
1,500
CUT FOUR CORNERS
AFTER REMOVING SHEET
METAL
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
3,307
2,299
the cooling unit to avoid condensation in the heating element. With
1,858
1,559 a parallel flow arrangement, the dampers or other means used to
1,417
control the flow of air must be adequate to prevent chilled air from
1,275
1,066
entering the furnace and, if manually operated, must be equipped
976
with means to prevent operation of either unit unless the damper is
866
787
in the full heat or cool position.
665
590
When the furnace is installed without a cooling coil, it is recom-
mended that a removable access panel be provided in the outlet air
25
CUL CULA A A A A TIN CUL TIN TIN TING AIR & FIL G AIR & FIL G AIR & FIL G AIR & FILTER
CUL TIN G AIR & FIL
F
LOW
A O [U M
IR PENING PFLOW
WARNING
U
SE GLOVES AS A PRECAUTION
PRESS OUT BY HAND
Duct Flange Cut Outs
TERS S S S S TER TER
TER
]
ODELS
SCRIBE LINES OUTLINING
DUCT FLANGES