Instruction manual

24
(Terminals are identified as HEAT and COOL (hot)). If heating
and cooling blower speeds are the same, a jumper wire must
be used between the heat and cool terminals.
4. Connect all unused blower motor leads to the “PARK”
terminals on the integrated control module. Any leads not
connected to the “PARK” terminals must be taped.
5. Turn ON power to furnace.
6. Verify proper temperature rise as outlined in Temperature Rise
section.
Oran
g
e
Hi
g
h
Common/Neutral
Medium Low
Circulator Blower S
p
eeds
Low Red
Medium Blue
Black
White
Figure 28
Wiring Designations
CIRCULATOR BLOWER FAN TIMING ADJUSTMENT
NOTE: Items in this section refer to the air circulator blower fan,
NOT to the induced draft blower. The induced draft blower timing
sequence is not adjustable. The circulator blower fan timing is ad-
justable only on models with optional “heating fan OFF delay” ad-
justment pins or switches (Figure 29). It is NOT adjustable in any
other circumstances.
As shipped, the circulator blower fan will remain on for 90 seconds
after the gas valve closes.
When a call for cooling occurs, the circulator fan comes on and re-
mains on for 45 seconds after the call for cooling ends. During nor-
mal heating operation, the circulator fan will come on approximately
37 seconds after the gas valve opens.
RISE =
SUPPLY
AIR
RETURN
AIR
HEAT EXCHANGER
RADIATION "LINE OF SIGHT"
T
RETURN
T
SUPPLY
T
SUPPLY
-
T
RETURN
Figure 27 - Temperature Rise Measurement
1. Operate furnace with burners firing approximately 15 minutes.
Ensure all registers are open and all duct dampers are in
their final (fully or partially open) position.
2. Place thermometers in the return and supply ducts as close
to the furnace as possible. Thermometers must not be
influenced by radiant heat by being able to “see” the heat
exchanger.
3. Subtract the return air temperature from the supply air
temperature to determine the air temperature rise. Allow
adequate time for thermometer readings to stabilize.
4. Adjust temperature rise by adjusting the circulator blower
speed. Increase blower speed to reduce temperature rise.
Decrease blower speed to increase temperature rise. Refer
to the following section for speed changing details.
CIRCULATOR BLOWER SPEED ADJUSTMENT
WARNING
T
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, TURN
OFF
POWER TO THE FURNACE BEFORE CHANGING SPEED TAPS.
This furnace is equipped with a PSC circulator blower motor. This
blower provides ease in adjusting blower speeds. Refer to the Prod-
uct Data Bulletin provides an airflow table, showing the relationship
between airflow (CFM) and external static pressure (E.S.P.), for the
proper selection of heating and cooling speeds. The cooling blower
speed is shipped set on HIGH, and the heating blower speed is set
as indicated in the Product Data Bulletin. These blower speeds should
be adjusted by the installer to match the installation requirements so
as to provide the correct heating temperature rise and the correct
cooling CFM.
To adjust the circulator blower speed, proceed as follows:
1. Turn OFF power to the furnace.
2. Select the heating and cooling blower speeds that match the
installation requirements from the airflow table in the Product
Data Bulletin.
3. Relocate desired motor leads to the circulator blower heat
and cool speed terminals on the integrated control module.
PROPANE GAS PIPING CHARTS
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 Nominal Pipe Size
Tubing Tubing Size, O.D. Type L Schedule 40
Length, 3/8" 1/2" 5/8" 3/4" 7/8" 1/2" 3/4"
Feet
10 730 1,700 3,200 5,300 8,300 3,200 7,500
20 500 1,100 2,200 3,700 5,800 2,200 4,200
30 400 920 2,000 2,900 4,700 1,800 4,000
40 370 850 1,700 2,700 4,100 1,600 3,700
50 330 770 1,500 2,400 3,700 1,500 3,400
60 300 700 1,300 2,200 3,300 1,300 3,100
80 260 610 1,200 1,900 2,900 1,200 2,600
100 220 540 1,000 1,700 2,600 1,000 2,300
125 200 490 900 1,400 2,300 900 2,100
150 190 430 830 1,300 2,100 830 1,900
175 170 400 780 1,200 1,900 770 1,700
200 160 380 730 1,100 1,800 720 1,500
To convert to capacities at 15 psig settings - multiply by 1.130
To convert to capacities at 5 psig settings - multiply by 0.879
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 Nominal Pipe Size
Tubin
g
Tubin
g
Size, O.D. T
y
pe L Schedule 40
Len
g
th, 3/8
"
1/2" 5/8" 3/4
"
7/8" 1-1/8" 1/2
"
3/4" 1" 1-1/4" 1-1/2"
Feet
10 39 92 199 329 501 935 275 567 1,071 2,205 3,307
20 26 62 131 216 346 630 189 393 732 1,496 2,299
30 21 50 107 181 277 500 152 315 590 1,212 1,858
40 19 41 90 145 233 427 129 267 504 1,039 1,559
50 18 37 79 131 198 376 114 237 448 913 1,417
60 16 35 72 121 187 340 103 217 409 834 1,275
80 13 29 62 104 155 289 89 185 346 724 1,066
100 11 26 55 90 138 255 78 162 307 630 976
125 10 24 48 81 122 224 69 146 275 567 866
150 9 21 43 72 109 202 63 132 252 511 787
200 8 19 39 66 100 187 54 112 209 439 665
250 8 17 36 60 93 172 48 100 185 390 590
*Data in accordance with NFPA pamphlet NO. 54