Modine Manufacturing DJE Installation And Service Manual page 8

I I N N S S T T A A L L L L A A T T I I O O N N
10. Compounds used on threaded joints of gas piping shall
be resistant to action of liquefied petroleum gases.
11. Purge air before lighting unit by disconnecting pilot at
outlet of pilot valve. In no case should line be purged into
heat exchanger.
12. After installation, the piping system must be checked for
leaks. Use soap solution.
13. Install a ground joint union and a gas cock upstream of
the unit for easy servicing of controls, including a 1/8"
NPT plugged tapping accessible for test gauge
connection (see Figure 6).
T T a a b b l l e e 2 2 – – G G a a s s P P i i p p e e C C a a p p a a c c i i t t i i e e s s
In Cu. Ft. per Hour with Pressure Drop of 0.3 in. W.C. with Specific Gravity 0.60
L L e e n n g g t t h h
o o f f P P i i p p e e
i i n n F F t t . . 1 1 / / 2 2
1 1 5 5
76
3 3 0 0
73
4 4 5 5
44
6 6 0 0
50
7 7 5 5
9 9 0 0
1 1 0 0 5 5
1 1 2 2 0 0
1 1 5 5 0 0
1 1 8 8 0 0
2 2 1 1 0 0
2 2 4 4 0 0
2 2 7 7 0 0
3 3 0 0 0 0
4 4 5 5 0 0
6 6 0 0 0 0
T T a a b b l l e e 3 3 – – S S p p e e c c i i f f i i c c G G r r a a v v i i t t y y C C o o n n v v e e r r s s i i o o n n
F F a a c c t t o o r r s s
Multiplying factors to be used with Table 2 when
the specific gravity of gas is other than 0.60.
N N A A T T U U R R A A L L G G A A S S
S S p p e e c c i i f f i i c c S S p p e e c c i i f f i i c c
F F a a c c t t o o r r
G G r r a a v v i i t t y y G G r r a a v v i i t t y y
0.55 1.04
0.60 1.00
0.65 0.962
W W i i r r i i n n g g
! CAUTION
Disconnect power supply before making wiring connections
to prevent electrical shock and equipment damage. ALL
UNITS MUST BE WIRED STRICTLY IN ACCORDANCE
WITH WIRING DIAGRAM FURNISHED WITH UNIT.
ANY WIRING DIFFERENT FROM WIRING DIAGRAM MAY
BE HAZARDOUS TO PERSONS AND PROPERTY.
Any damage to or failure of Modine units caused by incorrect
wiring of the units is not covered by MODINE'S STANDARD
WARRANTY (see inside Back Cover).
8 8
3 3 / / 4 4 1 1 1 1 - - 1 1 / / 4 4
218 440 750
152 285 590
124 260 435
105 200 400
97 190 345
88 168 320
80 160 285
158 270
128 242
120 225
205
190
178
170
140
119
P P R R O O P P A A N N E E G G A A S S
F F a a c c t t o o r r
1.50 0.633
1.53 0.626
1.60 0.612
14. Allow at least 5 feet of piping between any high pressure
regulator and unit controls.
15. Testing Piping System. The appliance and its individual
shutoff valve must be disconnected from the gas supply
piping system during any pressure testing if the test
pressure is in excess of 1/2 psi.
The appliance must be isolated from the gas supply
piping system by closing its field installed manual shutoff
valve.
D D i i a a m m e e t t e e r r o o f f P P i i p p e e — — I I n n c c h h e e s s
1 1 - - 1 1 / / 2 2 2 2
1220 2480 6500
890 1650 4700
700 1475 3900
610 1150 3250
545 1120 3000
490 930 2600
450 920 2450
420 860 2300
380 710 2000
350 720 1950
320 660 1780
300 620 1680
285 580 1580
270 545 1490
226 450 1230
192 380 1030
F F i i g g u u r r e e 6 6 – – R R e e c c o o m m m m e e n n d d e e d d P P i i p p i i n n g g t t o o C C o o n n t t r r o o l l s s
SUPPLY LINE
GAS
SUPPLY LINE
3"
MIN.
SEDIMENT
All field installed wiring must be done in accordance with the
National Electrical Code ANSI/NFPA 70 — Latest Edition or
Canadian Electrical Code CSA C22.1 Part 1 or local codes.
Unit must be electrically grounded according to these codes.
See wiring diagram shipped with unit.
The power to these duct furnaces should be protected with a
fused disconnect. Units for use with three-phase electric
power must be provided with a motor starter having properly
sized overload protection.
Location of thermostat should be determined by heating
requirements and be mounted on an inside wall about 5'
above floor level where it will not be affected by heat from the
unit or other sources, or drafts from frequently opened doors.
See instructions packed with thermostat.
3 3 4 4 6 6
13880 38700
9700 27370
7900 23350
6800 19330
6000 17310
5400 15800
5100 14620
4800 13680
4100 12240
4000 11160
3700 10330
3490 9600
3250 9000
3000 8500
2500 7000
2130 6000
GAS
GROUND
JOINT
UNION
W/ BRASS
GAS
SEAT
COCK
TO
CONTROLS
PLUGGED
1/8" NPT TEST
GAGE CONNECTION
TRAP
8 8
79000
55850
45600
39500
35300
32250
29850
27920
25000
22800
21100
19740
18610
17660
14420
12480