Troubleshooting cont – WaterFurnace 7 Series User Manual
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7 SERIES 50Hz 700A11 INSTALLATION MANUAL
Troubleshooting cont.
Variable Speed Startup/Troubleshooting Form
1. Job Information
Model
#
Job Name:
Loop: Open / Closed
Serial
#
Install Date:
Hot Water Generator: Y / N
2. Flow Rate in L/s
SOURCE COAX
HEATING SPEED 12
HEATING SPEED 4
COOLING SPEED 9
COOLING SPEED 3
WATER IN Pressure:
a.
kPa
a.
kPa
a.
kPa
a.
kPa
WATER OUT Pressure:
b.
kPa
b.
kPa
b.
kPa
b.
kPa
Pressure Drop: a - b
c.
kPa
c.
kPa
c.
kPa
c.
kPa
Look up flow rate in table:
d.
L/s
d.
L/s
d.
L/s
d.
L/s
3. Temperature Rise/Drop Across Coaxial Heat Exchanger
1
HEATING SPEED 12
HEATING SPEED 4
COOLING SPEED 9
COOLING SPEED 3
WATER IN Pressure:
e.
°C
e.
°C
e.
°C
e.
°C
WATER OUT Pressure:
f.
°C
f.
°C
f.
°C
f.
°C
Temperature Difference:
g.
°C
g.
°C
g.
°C
g.
°C
4. Temperature Rise/Drop Across Air Coil
HEATING SPEED 12
HEATING SPEED 4
COOLING SPEED 9
COOLING SPEED 3
SUPPLY AIR Temperature:
h.
°C
h.
°C
h.
°C
h.
°C
RETURN AIR Temperature:
i.
°C
i.
°C
i.
°C
i.
°C
Temperature Difference:
j.
°C
j.
°C
j.
°C
j.
°C
5. Heat of Rejection (HR)/Heat of Extraction (HE)
Brine Factor
2
:
k.
HEATING SPEED 12
HEATING SPEED 4
COOLING SPEED 9
COOLING SPEED 3
HR/HE = d x g x k
l.
kW/h
l.
kW/h
l.
kW/h
l.
kW/h
STEPS 6-9 NEED ONLY BE COMPLETED IF A PROBLEM IS SUSPECTED. USE HEATING SPEED 12 AND COOLING SPEED 9 FOR STEPS 6-9.
6. Watts
ENERGY MONITOR
HEATING SPEED 12
COOLING SPEED 9
Volts:
m.
Volts
m.
Volts
Total Amps (Comp. + Blower)
3
:
n.
Amps
n.
Amps
Watts = m x n x 0.85:
o.
Watts
o.
Watts
7. Capacity
HEATING SPEED 12
COOLING SPEED 9
Cooling Capacity = l - (o x 3.413):
p.
kW/h
p.
kW/h
Heating Capacity = l + (o x 3.413):
8. Efficiency
HEATING SPEED 12
COOLING SPEED 9
Cooling EER = p / o:
q.
kW/h
q.
kW/h
Heating COP = p / (o x 3.413):
9. Superheat (S.H.)/Subcooling (S.C.)
Software Version
ABC:
AXB:
IZ2:
TSTAT:
HEATING SPEED 12
COOLING SPEED 9
Suction Pressure:
r.
kPa
r.
kPa
Suction Saturation Temperature:
s.
°C
s.
°C
Suction Line Temperature:
t.
°C
t.
°C
S.H. = t - s
u.
°C
u.
°C
Head Pressure:
v.
kPa
v.
kPa
High Pressure Saturation Temp:
w.
°C
w.
°C
Liquid Line Temperature
4
:
x.
°C
x.
°C
S.C. = w - x
y.
°C
y.
°C
NOTES:
1
Steps 3-9 should be conducted with the hot water generator disconnected.
2
Use 500 for pure water, 485 for methanol or Environol™. (This constant is derived by multiplying the weight of one gallon of water (8.34) times the minutes
in one hour (60) times the specific heat of the fluid. Water has a specific heat of 1.0.
3
If there is only one source of power for the compressor and blower, amp draw can be measured at the source wiring connection.
4
Liquid line is between the coax and the expansion device in the cooling mode; between the air coil and the expansion device in the heating mode.