Standby, Pre-heat, Heat-1 – Boyertown nrgMax Universal Oil Control V4.0 User Manual

Page 12: No ignition, High limit, Post-heat, Lost flame, Limit-reset, Circulate, Standard psc mode only)

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nrgMAX

(division of Bob Tonner Applied Research Inc)

Pickering, ON, 289-800-7131 www.nrgmax.ca

NORMAL SEQUENCE

ABNORMAL SEQUENCE

Standby

Burner=OFF

Blower=OFF

Pre-Heat

Burner=Enabled

Blower=OFF

Timer=30Sec

Heat-1

Burner=Enabled

Blower=HEAT

Timer=OFF

No Ignition

Burner=Enabled

Blower=OFF

Timer=OFF

High Limit

Burner=Enabled

Blower=HEAT

Timer=OFF

Post-Heat

Burner=OFF

Blower=HEAT

Timer=BOD

Lost Flame

Burner=Enabled

Blower=HEAT

Timer=BOD

Limit-Reset

Burner=OFF

Blower=HEAT

Timer=BOD

Circulate

Burner=OFF

Blower=COOL

Timer=OFF

BURNER NOT
DETECTED

BURNER NOT
DETECTED

CALL FOR
HEAT ON W

LIMIT OPEN

LIMIT CLOSED

W CLEARS

Y1, Y2
or G

CALL FOR
HEAT ON W

Heat, Cool and Circulation Sequences

(Standard PSC Mode only)

BURNER DETECTED

BURNER DETECTED

T

IM

E

R

E

X

P

IR

E

S

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