D.
L4006A High Limit Aquastat Control
The High Limit Aquastat Control determines the maximum boiler water temperature and also provides a means for protecting the boiler and heating
system from unsafe operating conditions which could damage the boiler. The aquastat is mounted in the 1/2-in. NPT control well and 3/4-in.x
1/2-in.bushing on the top of the front boiler section at the hot water outlet. The aquastat is tied in with the IBC and is factory set at 100°F water
temperature. The high limit setpoint is field adjustable and may be set anywhere between 100°F and 200°F. The field setpoint adjustment for each
installation depends on heating system requirements. The aquastat automatically resets when the boiler water temperature decreases (5–30°F
adjustable differential). The differential can be adjusted with the (white) Differential Adjustment Wheel on the aquastat and gives the flexibility
for boiler operation. The larger the differential, the longer the run cycle of the boiler.
NOTE:
The maximum setpoint of the Aquastat must not exceed 200°F.
Fig. 17—Field Wiring Connections
A99168
120 VOLT
CIRCULATOR
24 VOLT
THERMOSTAT
WIRE COLOR CODE
BK = BLACK
W = WHITE
G = GREEN
Y = YELLOW
BOILER
WIRING
IN J-BOX
120 VOLT
60 HZ 1 0
POWER SUPPLY
NEUTRAL
HOT
GROUND
BK
W
G
SERVICE SWITCH
FIELD WIRING CONNECTIONS
BK
W
G
BK
W
Y
Y
SERVICE SWITCH
JUNCTION BOX
—20—
Содержание BW9
Страница 37: ...Fig 29 Troubleshooting Chart No 1 A00318 37 ...
Страница 39: ...Fig 31 Troubleshooting Chart No 3 A00319 39 ...
Страница 40: ...Fig 32 Troubleshooting Chart No 4 A00320 40 ...
Страница 41: ...Fig 33 Troubleshooting Chart No 5 A00321 41 ...
Страница 42: ...Fig 34 Troubleshooting Chart No 6 A00322 42 ...
Страница 46: ...Fig 38 Boiler Block and Piping Assembly A99176 46 ...
Страница 51: ... 51 ...
Страница 52: ... 2003 CAC BDP 7310 W Morris St Indianapolis IN 46231 imbw9a03 52 Catalog No 63BW 9A4 ...