PG92MSA: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
50
NOTE:
1.A filter is required for each return-air inlet. Airflow performance included 3/4-in. (19 mm) washable filter media such as contained in a factory - authorized accessory filter rack. See
accessory list. To determine airflow performance without this filter, assume an additional 0.1 in. w.c. available external static pressure.
2.Adjust the blower airflow settings as necessary for the proper air temperature rise for each installation.
3.Airflows over 1800 CFM require bottom return, two-side return, or bottom and side return. A minimum filter size of 20” x 25” (508 x 635 mm) is required.
4.For upflow applications, air entering from one side into both the side of the furnace and a return air base counts as a side and bottom return
5..The -- entry indicates unstable operating conditions
FURNACE CONTROL PROGRAMMING AND
NAVIGATION
On-Board Control Method
This furnace model is equipped with an on-board 3-digit LCD display
with pushbutton navigation for the adjustment of operating parameters,
diagnostics, and service. The control board must be powered to use the
display and pushbuttons. Upon startup, the control will alternate
displaying the Model Program Number (PRG) and Software Version
(uEr). The control board has been programmed at the factory with a
Model Program Number specific to the furnace product number. The
correct Model Program Number is shown on the furnace rating plate.
The system’s status is displayed after startup or after no control buttons
have been pressed for 60 seconds. Status Code LED will also be
illuminated or blinking when displaying the system status. The codes
which indicate the current operating mode of the system as shown in
Table 20.
60120D
1 Cont. Fan 770 665 545 445 355 275 185 - - -
2 830 725 615 515 425 345 265 180 130 -
3 915 815 725 615 525 445 370 295 220 165
4 990 895 810 710 620 540 465 395 325 255
5 1085 1000 915 835 740 655 580 510 445 380
6 1170 1095 1010 935 855 765 690 620 555 490
7 1235 1160 1080 1005 935 850 770 700 635 570
8 1330 1260 1190 1115 1050 980 900 820 755 695
9 1405 1335 1270 1200 1135 1070 1000 920 850 790
10 1490 1425 1365 1295 1235 1170 1110 1040 965 900
11 1585 1525 1470 1405 1340 1285 1230 1170 1105 1030
12 1665 1605 1550 1495 1435 1375 1320 1270 1210 1145
13 1750 1700 1645 1595 1535 1480 1425 1375 1320 1270
14 1835 1785 1740 1685 1630 1575 1525 1475 1430 1385
15 Heat 1880 1830 1780 1730 1680 1625 1575 1530 1480 1435
16 1920 1875 1825 1775 1730 1675 1625 1580 1535 1490
17 1995 1945 1900 1855 1810 1760 1715 1670 1625 1585
18 Cooling 2115 2065 2020 1975 1930 1875 1815 1750 1690 1630
Table 18 – Air Delivery - CFM (with filter) (Continued)
Unit Size
Airflow
Setting
Default
Setting
External Static Pressure (IN.W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Table 19 – Airflow Settings
Default Airflow Settings
*
*. Setting #1 is the default setting for Constant Fan
Designated Airflow Settings
Unit Size Heating Cooling Heating Const. Fan
36040A 8 18 (5-8) (1-4)
36040B 9 18 (4-9) (1-1)
36060A 12 18 (6-14) (1-6)
42060B 9 18 (7-14) (1-8)
48080B 11 17 (8-14) (1-8)
60080C 11 18 (7-14) (1-8)
60100C 13 18 (7-16) (1-7)
60120D 15 18 (12-16) (1-1)
CAUTION
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, or death.
Blower access door switch removes 115-V power to control. No
component operation can occur unless switch is closed. Caution must
be taken when manually closing this switch for service purposes.
Do not tape or permanently allow the door switch to be bypassed.
Temporarily depress the door switch with one hand while accessing the
service buttons with your other hand. Do not touch uninsulated
electrical components.
Table 20 – System Status Display Codes
Display Operating Mode Notes:
iDl
Idle/Standby Mode No active demands
Ht
Heating Mode Gas Heating active
CL
Cooling Mode Cooling or Heat Pump active
Hpd
Heat Pump Defrost Mode Gas Heating cycle active during Heat Pump Defrost cycle
Cfn
Continuous Fan Mode Continuous Fan active
bLr
Secondary Unit Operating
Blower
Only used when control is the secondary furnace of a twinned furnace system and primary
furnace is active
##.# Active Status Code See Fig. 61 or Furnace Service Label for codes
To Next Page
Loading...
