22
A
ir
C
onditioning
/ H
eAt
P
umP
B
oiler
& W
Ater
H
eAters
& H
igH
e
ffiCienCy
m
odulAting
H
ot
W
Ater
s
ystems
f
urnACes
: 80%
f
urnACes
: 90%
Suction Line:
• Temperature
Verify proper:
• Static Duct Pressures
• Temperature Differential
• Static Pressure Drop Across Coils
B
oiler
Verify proper combustion:
• O2
• CO Air Free
• Stack Temp
• Stack Draft
• SSE
W
Ater
H
eAter
Draft
Verify proper combustion:
• O2
• CO
• Stack Temp
• Efficiency
He B
oiler
i
nstAnt
W
Ater
H
eAters
Draft
Verify proper
combustion:
• O2
• CO
• Stack Temp
• Efficiency
Hi / Low fire Gas
Pressure
Send and Return
Water temp
80% f
urnACe
Verify proper combustion:
• O2
• CO
• Stack Temp
• Vent Pressure
• Efficiency
Verify/Set Up
• Gas Pressure
Test
• Limit Switch
• Pressure Switch
Verify proper operation:
• Static Duct Pressure
• Temperature Rise
• AC side Static Pressure
Drop across coils
90%+ f
urnACe
Verify proper combustion:
• O2
• CO
• Stack Temp
• Vent Pressure
• Efficiency
Verify/Set Up
• Gas Pressure
Test
• Limit Switch
• Pressure Switch
Verify proper operation:
• Static Duct Pressure
• Temperature Rise
• AC side Static Pressure
Drop across coils
W
HERE
T
O
T
EST
to condensing unit
www.calcert.com
1.800.544.2843
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