Install Instructions

G. EM152 test sources
BATTERY REPLACEMENT
• When the battery is too low for safe operation, the Low
Battery indicator will display (BAT).
• Remove the screw (Phillips-head) from the battery cover.
• Replace the old battery with a new (9V) battery.
• Replace battery cover and screw.
DISPOSAL
CAUTION: This symbol indicates that equipment
and its accessories shall be subject to separate
collection and correct disposal.
CLEANING
Periodically clean your meter’s case using a damp cloth. DO NOT
use abrasive, flammable liquids, cleaning solvents, or strong
detergents as they may damage the finish, impair safety, or affect
the reliability of the structural components.
Keep pressure ports clean and free of grease and other deposits;
clean with a moist cloth as required.
STORAGE
Remove the battery when instrument is not in use for a prolonged
period of time. Do not expose to high temperatures or humidity.
After a period of storage in extreme conditions exceeding the
limits mentioned in the General Specifications section, allow the
instrument to return to normal operating conditions before using it.
OPRERATING INSTRUCTIONS
A. REC/MAX/MIN/AVG
• Press the REC/MAX/MIN/AVG button to record the
Maximum, Minimum and Average pressures.
• Press again to display MAX pressure recorded.
• Press again to display MIN pressure recorded.
• Press again to display AVG pressure recorded.
• Press and hold to Exit REC/MAX/MIN/AVG mode and
return to live reading.
B. HOLD
• Press Hold/Zero button to capture values on display.
Press again to return to live readings.
• Press and hold to reset pressure sensors to zero. Zero is
used to compensate for ambient pressure changes or
sensor drift.
C. ZERO
NOTE: Prior to use, the manometer must be zeroed. To do
this, ensure the manometer is in a non-pressurized area
and no hoses are attached.
• If the display reads other than zero, press and hold the
HOLD/ZERO button.
• The display will show ‘0000’ to indicate that the Zero
function has occurred.
• This operation should be performed especially if the
manometer has been dropped or maximum pressure
has been exceeded.
EM152
P
HOLD
ZERO
REC/MAX
MIN/AVG
SCALE
psi
HOLD
ZERO
EM152
P
HOLD
ZERO
REC/MAX
MIN/AVG
SCALE
psi
SCALE
EM152
P
HOLD
ZERO
REC/MAX
MIN/AVG
SCALE
psi
kpa
HOLD
HOLD
ZERO
• Default = HOLD
• Press x1 and hold = ZERO
D. SCALE
• To change the Measuring unit:
• Press the Scale button to scroll and select the unit.
• Units options:
• The Scale selection cannot be changed while the REC
mode is active.
E. PRESSURE TEST/∆P
• Left port: Negative pressure port. Applying a pressure on
this port will display a negative pressure.
• Right port: Positive pressure port. Applying a pressure
on this port will display a positive reading.
• Use either port to measure a single source by venting
the unused port into the atmosphere.
• The manometer will continually provide a pressure reading.
• Connect hoses to both Pressure ports from pressure
sources for Pressure Differential mode.
• Press ∆P (Pressure Differential) button to toggle
differential pressure on and off.
F. ERROR CODES
An error message will appear on the display if the meter
fails an internal diagnostic test.
1. Err. 1: Positive pressure value is greater than the
meter range.
2. Err. 2: Negative pressure value is less than the meter
range.
WARNING
• Maximum Over Pressure for this manometer is: 10 PSI.
PRESSURE CONVERSIONS
Multiply By To Get
In. of H2O 401.4630787 Bar
In. of H2O 1.72999405266 ozin
In. of H2O 0.036 PSI
In. of H2O 0.074 InHg
In. of H2O 2.491 mBar
In. of H2O 1.868 mmHg
In. of H2O 0.249 kPa
In. of H2O 249.1 Pascals
In. of H2O 393.700790036 kgcm
In. of H2O 0.0833333333333 FtH2O
In. of H2O 2.539999983 cmH2O
AB
C
E
F
G
H
D
A. Positive Pressure Input
B. Negative Pressure Input
C. Return Plenum
D. Gas Value
E. Pressure Switch
F. Inducer
G. Evaporator Coil
H. Supply Plenum
- Bar
- ozin
2
- Psi
- InHg
- mBar
- mmHg
- kPa
- kgcm
2
- InH
2
O
- FtH
2
O
- cmH
2
O
EM152
P
HOLD
ZERO
REC/MAX
MIN/AVG
SCALE
psi
REC/MAX
MIN/AVG
• Default = REC
• Press x1 = MAX
• Press x2 = MIN
• Press x3 = AVG
kpa
REC
H/M/S
bar
BAT
EM152
P
HOLD
ZERO
REC/MAX
MIN/AVG
SCALE
psi
P
bar
DIF