LAARS Mighty Venter MV2 (Sizes 175-400) - Install and Operating Manual - Manual (Page 8)

Page 8
LAARS Heating Systems
3a. Safety Interlock Test
1. Turn the appliance thermostat/aquastat high
enough to call for heat.
2. Verify by fan rotation that the Power Venter
begins operating before the gas valve becomes
energized.
3. With the appliance firing and the Power Venter
operating, disrupt power to the Power Venter by
removing one of the black wires from the Power
Venter relay. Make sure the appliance gas valve
turns off.
WARNING
Do not operate the boiler that does not shut off when
the Power Venter is disabled.
3b. Maintenance
1. Oil the motor every six months with 2 drops of
S.A.E. #20 oil. The oil ports are located on top of
the motor.
2. Laars recommends that the boiler system be
checked annually by a qualified service
technician. The inspection should include
checking all vent pipe and connections for
blockage and leaks, and a safety interlock test.
Parts List
Part Number Description Boiler Size
10718702 Mighty Venter Kit (MV1) 175
D2008801 Power Venter
D0019700 Vent Hood, 7.6" Dia.
D0018800 4" x 6" Reducer (Qty. 1)
10718703 Mighty Venter Kit (MV1) 250
D2008801 Power Venter
D0019800 Vent Hood, 8.6" Dia.
D0018900 6" x 7" Reducer (Qty. 1)
D0018800 4" x 6" Reducer (Qty. 2)
10718704 Mighty Venter Kit (MV2) 325
D2008802 Power Venter
D0019800 Vent Hood, 8.6" Dia.
D0019000 6" x 8" Reducer (Qty. 1)
10718705 Mighty Venter Kit (MV2) 400
D2008802 Power Venter
D0019800 Vent Hood, 8.6" Dia.
D0019100 6" x 9" Reducer (Qty. 1)