Set Thermostat Heat Anticipator; Check Safety Controls - Carrier 58UHV Installation, Start-Up, And Operating Instructions Manual
Upflow/horizontal variable-speed, 2-stage
induced-combustion gas furnaces
sizes 060-120, series 100
Hide thumbs
Also See for 58UHV:
Table of Contents
Advertisement
Table 11—Models 58UHV and 58UXV Orifice Size and Manifold Pressure for Correct Input Rate
(Tabulated Data Based on Altitude Up to 2000 ft and 20,000 Btuh High Heat/13,000 Btuh Low Heat Per Burner)
GAS HEAT
0.58
VALUE
Orf
Heat
(BTU/CU FT)
No.
High/Low
860
43
3.7/1.6
875
43
3.6/1.5
890
43
3.5/1.5
43
3.3/1.3
905
44
3.7/1.5
43
3.2/1.3
920
44
3.7/1.5
935
44
3.6/1.5
950
44
3.5/1.5
965
44
3.4/1.4
980
44
3.3/1.4
44
3.2/1.3
995
45
3.8/1.6
1010
45
3.7/1.6
45
3.6/1.5
1025
46
3.8/1.6
45
3.5/1.5
1040
46
3.7/1.6
45
3.4/1.4
1055
46
3.6/1.5
45
3.3/1.4
1070
46
3.5/1.5
45
3.2/1.4
1085
46
3.4/1.4
47
3.8/1.6
46
3.3/1.4
1100
47
3.7/1.6
b. When thermometer readings stabilize, subtract return-air
temperature from supply-air temperature to determine tem-
perature rise.
NOTE: If the temperature rise is outside this range, first check:
(1.) Gas input for low- and high-stage operation.
(2.) Derate for altitude if applicable.
(3.) Return and supply ducts for excessive restrictions
causing static pressures greater than 0.70-in. wc.
c. Adjust air temperature rise by adjusting airflow. Move the
RED jumper wire on the airflow selector control to MID,
HI, or M-HI for mid-point of the air temperature rise range,
high end of the rise range, or in-between, respectively. The
single RED jumper selection is used for both high- and
low-stage rises. Power need not be reset after making this
selection.
Recheck the temperature rise. It must be within the limits
specified on the unit rating plate. Recommended operation is
at midpoint of rise range or above.
3. Set thermostat heat anticipator.
a. When using a non-electronic thermostat, the thermostat
heat anticipation must be set to match the amp draw of the
SPECIFIC GRAVITY OF NATURAL GAS
0.60
0.62
Orf
Heat
Orf
Heat
No.
High/Low
No.
High/Low
43
3.8/1.6
42
3.2/1.4
43
3.7/1.6
43
3.8/1.6
43
3.6/1.5
43
3.7/1.6
43
3.5/1.4
43
3.6/1.5
43
3.3/1.4
43
3.5/1.4
44
3.8/1.6
43
3.2/1.4
43
3.3/1.4
44
3.7/1.6
44
3.8/1.6
43
3.2/1.4
44
3.6/1.5
44
3.7/1.6
44
3.5/1.5
44
3.6/1.5
44
3.4/1.4
44
3.5/1.5
44
3.3/1.4
44
3.4/1.4
44
3.2/1.3
44
3.3/1.4
45
3.8/1.6
45
3.7/1.6
44
3.2/1.3
45
3.6/1.5
45
3.7/1.6
46
3.8/1.6
45
3.5/1.5
45
3.6/1.5
46
3.7/1.6
46
3.8/1.6
45
3.4/1.4
45
3.5/1.5
46
3.6/1.5
46
3.7/1.6
45
3.3/1.4
45
3.4/1.5
46
3.5/1.5
46
3.6/1.5
45
3.2/1.4
45
3.4/1.4
46
3.4/1.4
46
3.5/1.5
0.64
0.66
Orf
Heat
Orf
Heat
No.
High/Low
No.
High/Low
42
3.3/1.4
42
3.4/1.5
42
3.2/1.4
42
3.3/1.4
43
3.8/1.6
42
3.2/1.4
43
3.7/1.5
43
3.8/1.6
43
3.6/1.5
43
3.7/1.5
43
3.5/1.5
43
3.6/1.5
43
3.3/1.4
43
3.4/1.5
44
3.8/1.6
43
3.2/1.4
43
3.3/1.4
44
3.7/1.6
44
3.8/1.6
43
3.2/1.4
44
3.6/1.5
44
3.7/1.6
44
3.5/1.5
44
3.6/1.5
44
3.4/1.4
44
3.5/1.5
44
3.3/1.4
44
3.4/1.4
44
3.2/1.3
44
3.3/1.4
45
3.8/1.6
44
3.2/1.3
45
3.7/1.5
45
3.8/1.6
46
3.8/1.6
45
3.6/1.5
45
3.7/1.5
46
3.7/1.6
45
3.5/1.5
45
3.6/1.5
46
3.6/1.5
46
3.8/1.6
electrical components in the R-W/W1 circuit. Accurate
amp draw readings can be obtained at the wires normally
connected to thermostat subbase terminals R and W/W1.
Fig. 19 illustrates an easy method of obtaining the actual
amp draw. The amp reading should be taken after the
blower motor has started and the furnace is operating in
low stage. To operate the furnace in low stage, first move
SW-2 to ON position, THEN connect the ammeter wires as
shown in Fig. 19. The thermostat anticipator should NOT
be in this circuit while measuring the current. If the
thermostat has no subbase, the thermostat MUST be
disconnected from the R and W/W1 wires during the
current measurement. Return SW-2 to final desired location
after completing the reading. See the thermostat manufac-
turer's instructions for adjusting the heat anticipator and for
varying the heating cycle length.
b. When using an electronic thermostat, set the cycle rate for
3 cycles per hr, if possible.
CHECK SAFETY CONTROLS
The flame sensor, gas valve, and pressure switches were all
checked in the Start-up section as part of normal operation.
1. Check primary limit control.
This control shuts off the combustion control system and
energizes the circulating-air blower motor if the furnace
overheats.
19
0.68
0.70
Orf
Heat
Orf
Heat
No.
High/Low
No.
High/Low
41
3.2/1.4
41
3.3/1.4
42
3.6/1.5
42
3.7/1.5
41
3.2/1.3
42
3.4/1.4
42
3.5/1.5
42
3.3/1.4
42
3.4/1.4
42
3.2/1.4
42
3.3/1.4
43
3.8/1.5
42
3.2/1.3
43
3.7/1.5
43
3.8/1.6
43
3.6/1.5
43
3.7/1.5
43
3.4/1.5
43
3.5/1.5
43
3.3/1.4
43
3.4/1.5
44
3.8/1.6
43
3.2/1.4
43
3.3/1.4
44
3.7/1.6
44
3.8/1.6
43
3.2/1.4
44
3.6/1.5
44
3.7/1.6
44
3.5/1.5
44
3.6/1.5
44
3.4/1.4
44
3.5/1.5
44
3.3/1.4
44
3.4/1.4
44
3.2/1.4
44
3.3/1.4
45
3.8/1.6
44
3.2/1.4
45
3.7/1.6
45
3.8/1.6
0.72
Orf
Heat
No.
High/Low
41
3.4/1.4
42
3.8/1.6
41
3.3/1.4
42
3.6/1.5
41
3.2/1.3
42
3.5/1.5
42
3.4/1.4
42
3.3/1.3
42
3.2/1.3
43
3.8/1.6
43
3.6/1.5
43
3.5/1.5
43
3.4/1.4
43
3.3/1.4
44
3.8/1.6
43
3.2/1.4
44
3.7/1.6
44
3.6/1.5
44
3.5/1.5
44
3.4/1.4
44
3.3/1.4
44
3.2/1.4
Advertisement
Table of Contents
