Vil. Electrical Wiring - Amana GUI* Installation Instructions Manual

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

VIl. Electrical Wiring

WARNING
To prevent death or personal injury due to
electric shock, disconnect electrical power
before changing any electrical wiring.
CAUTION
When servicing controls, label all wires
before disconnecting. Wiring errors can
cause improper and dangerous operation.
After servicing is completed, always verify
proper operation.
The unit wiring harness is an integral part of the furnace.
Field alteration to comply with electrical codes should not
be required.
Power supply to the furnace must be NEC Class 1, and
must comply with all applicable codes. The furnace must be
electrically grounded in accordance with the local codes or,
in their absence, with the latest edition of the National
Electrical Code, ANSI NFPA No. 70 and/or the CSA C22. 1
Electrical Code. A fused disconnect must be provided and
sized in accordance with the unit maximum overcurrent
protection. This furnace has both "W1" and "W2" terminals.
The following figure shows connections for a "heat only"
two-stage system.
Heating
Room
Thermostat
W2
W1
R
Y
R
B
G
W1
W2
Furnace Control
Figure 21
Typical Field Wiring
(24 VAC Control Circuit)
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 3,307
346 630 189 393 732 1,496 2,299
277 500 152 315 590 1,212 1,858
233 427 129 267 504 1,039 1,559
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
Heating/Cooling
Room
Thermostat
W2
Y
W1
R
G
C
Y Y
R
B C
G
Remote
W1
Condensing
W2
Unit
Furnace Control
A 40 VA transformer and an integrated electronic control
are built into the furnace to allow use with most cooling
equipment.
CAUTION
To avoid the risk of electrical shock, wiring
to the unit must be properly polarized and
1,417
1,275
grounded.
1,066
976
866
To provide more reliable sensing of flame, the ground wire
787
665
must run to the electrical panel.
590
Line voltage wiring must enter into the junction box pro-
vided with the furnace.
As shipped, the junction box is attached to the left side of the
furnace (as viewed for an upflow installation). If this is
suitable for your installation, no changes are necessary.
If the line voltage wiring is to enter through the right side of
the furnace (as viewed for an upflow installation), relocate
the junction box as shown in Figure 22.
Junction
Box
Junction Box (Left Side)
WARNING
To prevent death or personal injury due to
electric shock, disconnect electrical power.
1. Remove both doors from the furnace.
2. Remove and save the screws holding the junction box
to the left side of the furnace.
3. Disconnect the hose from the pressure switch. Leave
the other end attached to the induced draft blower.
4. Remove five wires entering junction box from split
grommet in blower deck.
5. Swap locations of the two bushings in the junction box.
6. Rotate the junction box 180 degrees so the access
panel continues to face forward. The open snap bush-
ing should now be at the bottom.
7. Insert five wires into the split grommet on the right side
of the blower deck.
17
Figure 22