Daikin VHF, Installation And Maintenance Manual

Page: 59 / 64

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Unit Check / Equipment Data
Installation Data
Job Name ___________________________________________________
Check Test Date: __________________________
City __________________________________________________________ State _______________ Zip ______________
McQuay Model # _____________________________________________
McQuay Serial # _______________________________
Job site Unit ID # (HP #) __________________________
General Contractor: ______________________________ Mechanical Contractor: __________________________
Technician Performing Start-Up: Name _______________________ Employer: __________________________
Complete equipment data from measurements taken at the locatons indicated on the drawing below .
Equipment Data
Flow Rate EWP - LWP = ∆P
EWP - PSI In _____________ minus LWP - PSI Out _______ equals ∆P ___________
The first step in finding GPM is to subtract leaving water pressure from entering water pressure. The difference be-
tween the two is referred to as ∆P. ∆P can be converted to GPM by looking in the equipment specificaton catalog.
Caution ∆P ≠ GPM
Note: A conversion table must be used to find GPM from (Delta) ∆P measurements.
Loop Fluid Temperature Rise / Drop through Coaxial Heat Exchanger EWT - LWT = ∆T
EWT - °F Out _____________ minus LWT - °F Out ______________ equals Fluid ∆T ______________
∆T is the rise or drop in the fluid temperature as it passes through the Coaxial.
Air Temperature Rise / Drop through the air coil ∆T x CFM x 1.08 = BTUH Sensible
EAT - °F In _______________ minus LAT - °F Out _______________ equals Air ∆T _______________
Note: Perform Check, Test and Start-Up in the Cooling Mode Only .
A
I
R
C
O
I
L
V
V V
V
V
V
Discharge
Hot Gas
Suction
Compressor
Reversing Valve
V
COAX
IN OUT
LWP
LWT
Loop Fluid Pressure (In PSI) EWP
Loop Fluid Temperature °F EWT
EAT
Air Temperature °F
LAT
IN
OUT
Expansion
Valve
Check, Test & Start
EWT - Entering Water Temperature EWP - Entering Water Pressure EAT - Entering Air Temperature ∆ - Delta (Differential)
LWT - Leaving Water Temperature LWP - Leaving Water Pressure LAT - Leaving Air Temperature CFM - Cubic Feet/Minute
BTUH - British Thermal Units/Hour
1
3
2
4
5 6
1 2
3
4
5 6
Form No . ________________________
IM 986-11 • Vertical Stack WSHP 59 www.DaikinApplied.com