Red Status Light; Motor And Fan; Burner Orifice And Igniter - L.B. White Bloom 400 Owner's Manual And Instructions

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Bloom 400 Greenhouse Heater
D. Vent Relay:
This relay operates the fan motor only when the green-
house controller calls for air movement only (no heat).
See Fig. 10.
Terminal Function
2 120 VAC to relay from power supply (Vent)
4 120 VAC from relay to motor
6 120 VAC to relay from power supply
(Common)
8 120 VAC from relay to motor
0 120 VAC to relay from power supply (Vent)
1 120 VAC to relay from power supply
(Common)
FIG. 10
(Common illustration for Heat and Vent Relays)
D. Red Status Light
• The light will be constantly on during normal heating
operation.
• It will not be on when the switch is in vent mode.
• The red light will flash if a problem occurs. Count the
number of times it flashes & refer to Troubleshooting in
the manual.
Motor and Fan Assembly
1. Remove the fan guard.
2. Using a small wrench, reach around and loosen the
square head set screw on the motor side of the fan
hub.
3. Pull the fan from the motor shaft.
4. Remove the four bolts securing the motor's base to
the motor mount.
Owner's Manual • Bloom 400
FIG. 11
5. When reinstalling the fan, ensure the fan is flush with
shaft end and the set screw is positioned on the flat of
the motor shaft before tightening.
FIG. 12

Burner Orifice and Igniter

See Fig. 13.
Burner orifice
The burner orifice has a series of jets through which gas is
passed for ignition by the spark igniter.
-- To remove the orifice, use a 7/8 in. socket with ratchet.
-- Clean the holes with air if needed.
Igniter
The igniter is responsible for igniting the gas through spark.
It is also used as a flame sensor proving to the ignition
control that burner flame is present.
Cleaning / Servicing / Replacement
-- Using a 1/4 in. nut driver, remove the igniter plate
mounting screws.
-- Disconnect the ignition cable.
-- Check the igniter for cracks. Replace if necessary
FLUSH