Johnson Controls RW Series - Page 34

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RW SERIES REVERSIBLE CHILLER INSTALLATION MANUAL
Check One
Start up/Check-out for new installation
T Troubleshooting Problem:___________________________________T
1. FLOW RATE IN GPM (SOURCE SIDE HEAT EXCHANGER)
Water In Pressure: a.______ PSI
Water Out Pressure: b.______ PSI
Pressure Drop = a - b c.______ PSI
Convert Pressure Drop to Flow Rate
(refer to Pressure Drop table) d.______ GPM
2. TEMPERATURE RISE OR DROP ACROSS SOURCE SIDE HEAT EXCHANGER
COOLING HEATING
Water In Temperature: e.______ °F e.______ °F
Water Out Temperature: f. ______ °F f. ______ °F
Temperature Difference: g.______ °F g.______ °F
3. TEMPERATURE RISE OR DROP ACROSS LOAD SIDE HEAT EXCHANGER
COOLING HEATING
Water In Temperature: h.______ °F h.______ °F
Water Out Temperature: i. ______ °F i. ______ °F
Temperature Difference: j. ______ °F j. ______ °F
4. HEAT OF REJECTION (HR) / HEAT OF EXTRACTION (HE) CALCULATION
HR or HE = Flow Rate x Temperature Difference x Brine Factor*
d. (above) x g. (above) x 485 for Methanol or Environol, 500 for water*
Heat of Extraction (Heating Mode) = btu/hr
Heat of Rejection (Cooling Mode) = btu/hr
Compare results to Capacity Data Tables
Note: Steps 5 through 8 need only be completed if a problem is suspected
5. WATTS
COOLING HEATING HYDRONIC
Volts: m._____
VOLTS m.______ VOLTS m.
______
VOLTS
Total Amps (Comp. + Fan): n. _____ AMPS n. ______ AMPS n.
______
AMPS
Watts = m. x n. x 0.85 o. _____ WATTS o. ______ WATTS o.
______
WATTS
6. CAPACITY
Cooling Capacity = HR. - (o. x 3.413)
p
. _____ btu/hr
Heating Capacity= HE. + (o. x 3.413)
p
. _____ btu/hr
7. EFFICIENCY
Cooling EER = p. / o.
q
. _____ EER
Heating COP = p. / (o. x 3.413)
q
. _____ COP
8. SUPERHEAT
(
S.H.
)
/ SUBCOOLING
(
S.C.
)
COOLING HEATING HYDRONIC
Suction Pressure: r. ______ PSI r. ______ PSI r. ______ PSI
Suction Saturation Temperature: s. ______ °F s. ______ °F s. ______ °F
Suction Line Temperature: t. ______ °F t. ______ °F t. ______ °F
Superheat = t. - s. u. _____ °F u. ______ °F u. ______ °F
Head Pressure: v. ______ PSI v. ______ PSI v. ______ PSI
High Pressure Saturation Temp.: w. _____ °F w. _____ °F w. _____ °F
Liquid Line Temperature*: x. ______ °F x. ______ °F x. ______ °F
Subcooling = w. - x. y. ______ °F y. ______ °F y. ______ °F
* Note: Liquid line is between the source heat exchanger and the expansion valve in the cooling mode;
between the load heat exchanger and the expansion valve in the heating mode.
Company Name: _________________________________
Technician Name: ________________________________
Model No: ______________________________________
Owner’s Name: __________________________________
Installation Address: ______________________________
Company Phone No:______________________________
Date: __________________________________________
Serial No:_______________________________________
Open or Closed Loop: _____________________________
Installation Date: _________________________________
COOLING
RW Series Troubleshooting Form