nne
co
er tu
e gas
o
ers
water
eaters –
o
er
anua
51
M
STI
N
I N
1
IN
GAS PRESSURE AT ELBOW TEST POR
INCHES W.C
NCHES W.C
C
CO
PPM
M
NET
TA
K TEMPERAT
R
ELBOW PRESSURE (W.C.) IN
HE
W.
N
HE
W.
.
A
TY
E
T
HE
K
I
L
W SWITCHE
IR
WIT
FLAME SAFEGUAR
OW W ATER CUT -OFF
IGH LIMIT
C
MMISSIONIN
I
E
E
NIT CYCLED MINIMUM
F 15 TIME
THE DELTA T BETWEEN THE HEATER
INLET AND OUTLET IS CRITICAL TO
PROPER FLOW. BEFORE YOU LEAVE
THE JOBSITE, YOU MUST RECORD THE
DELTA T. THIS READING SHOULD NOT
EXCEED 35°F, 19.4°C, NOR BE LOWER
THAN 20°F, 11.2°C.
ELTA T =
CUSTOMER INSTRUCTE
ALL COVERS REPLACE
UST
MER GIVEN MANUA
ARGET TEMPERAT
RE SET PER C
ST
ME
COMMISSIONED BY:
______________________________________
SIGNATURE
DATE: ___________________________
A
TI
N
N
TE
C
MMENTS
Verify that the piping and controls ensure the boiler return water temperature does NOT drop below 140°F, 60°C. Operating
at lower return temperatures is likely to cause condensation in the primary heat exchanger, resulting in corrosion and possible
failure of the heat exchanger.