JOHNSON CONTROLS
57
SECTION 3 – START-UP
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
3
Manifold Gas Pressure Adjustment
Small adjustments to the manifold gas pressure can be
made by following the procedure outlined below. Refer
to
for the high and low fire
pressure regulator adjustment locations.
1. Turn the gas off to the unit.
2. Use a 3/16 inch Allen wrench to remove the 1/8
inch NPT plug from the outlet pressure tap of the
valve.
3. Install a brass adapter to allow the connection of a
hose to the outlet pressure tap of the valve.
4. Connect the hose to a manometer capable of read-
ing the required manifold pressure value.
5. Turn the gas back ON.
6.
Place the heat section into high fire operation.
7.
Compare the high fire manifold pressure to
.
8.
To adjust the high fire manifold pressure remove
the cap from the high fire pressure regulator. Use a
3/32 Allen wrench to make the manifold pressure
adjustment. To increase the manifold pressure,
turn the screw clockwise; to decrease the mani-
fold pressure, turn the screw counterclockwise.
Place your finger over the adjustment opening
while verifying the manifold pressure.
9.
Place the heat section into low fire operation.
10.
Compare the low fire manifold pressure to
.
FIGURE 22 -
MANIFOLD GAS PRESSURE
ADJUSTMENT
HIGH FIRE PRESSURE
REGULATOR
LOW FIRE
PRESSURE
REGULATOR
TWO STAGE
PRESSURE
REGULATOR
REGULATOR VENT COVER
INLET
LD11760a
11.
To adjust the low fire manifold pressure remove
the cap from the low fire pressure regulator. Use
a 3/32 inch Allen wrench to make the manifold
pressure adjustment. To increase the manifold
pressure, turn the screw clockwise; to decrease
the manifold pressure, turn the screw counter-
clockwise. Place your finger over the adjustment
opening while verifying the manifold pressure.
12. Turn the heat off.
13. Turn the gas off.
14. Remove the brass tubing adapter and replace the
plug in the outlet pressure tap.
TABLE 24 -
GAS HEAT PERFORMANCE DATA
UNIT GAS INPUT CAPACITY
(BTU/HR X 1000)
MAXIMUM OUTPUT CAPACITY
(BTU/HR X 1000)
AIRFLOW
TEMP. RISE
(°F)
MIN.
MAX.
50-61
375
300
7,500
24,000
40
750
600
14,000
24,000
40
1125
900
21,000
24,000
40
Содержание 050
Страница 112: ...JOHNSON CONTROLS 112 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE SENSOR READINGS LD13017 ...
Страница 113: ...JOHNSON CONTROLS 113 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 ECONOMIZER EXHAUST LD13018 ...
Страница 114: ...JOHNSON CONTROLS 114 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE FANS LD13019 ...
Страница 115: ...JOHNSON CONTROLS 115 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 COOLING SETUP LD13020 ...
Страница 116: ...JOHNSON CONTROLS 116 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE COOLING STATUS LD13021 ...
Страница 117: ...JOHNSON CONTROLS 117 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 HEATING SETUP LD13022 ...
Страница 118: ...JOHNSON CONTROLS 118 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE HEATING STATUS LD13023 ...
Страница 119: ...JOHNSON CONTROLS 119 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 SYSTEM OPTIONS LD13024 ...
Страница 120: ...JOHNSON CONTROLS 120 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE OUTPUTS STATUS LD13025 ...
Страница 122: ...JOHNSON CONTROLS 122 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE GRAPHIC LD13027 CLOCK LD13028 ...
Страница 125: ...JOHNSON CONTROLS 125 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 ALARMS LD13031 ...
