Carrier 50WQ User Manual

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Number One
AirConditbninq
Maker
Division of
Carrier Corporation
' ; '*• : '^•s\- >:■ .vt •:■ ; ': <?!v:'! ••• ■ ' .*!^ '; *r\ *i ^*;'!';'i’;*
Carrier Parkway • Syracuse NY 13221
Single-Package
Water Source Heat Pumps
INDEX
Page
SAFETY CONSIDERATIONS
..............................
1
INTRODUCTION
...................................................
2
INSTALLATION....................................................2-4
Step 1 — Check Equipment and
Jobsite
..................................................................
2
UNPACKAGE UNIT
INSPECT EQUIPMENT
COMPLETE OR CONSIDER THESE
SYSTEM REQUIREMENTS
Step 2 — Connect Supply Ductwork
.................
2
Step 3 — Make Piping Connections
..................
3
CONNECT WATER SUPPLY AND
RETURN LINES
INSTALL BALANCING VALVES
INSTALL WATER REGULATING
VALVES
Page
MAKE CONDENSATE DRAIN LINE
CONNECTION
Step 4 — Make Electrical Connections.. 3,4
INSTALL A BRANCH CIRCUIT
DISCONNECT PER NEC
BRING POWER LEADS INTO UNIT
CONNECT GROUND LEAD TO
GROUND LUG IN SPLICE BOX
SET FAN MOTOR SPEED
CONNECT CONTROL POWER WIRING
START-UP
............................................................
4
SERVICE...............................................................6
MAINTENANCE
..................................................
10
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning
equipment can be hazardous due to system pressure
and electrical components. Only trained and quali
fied service personnel should install, repair or
service air conditioning equipment.
Untrained personnel can perform basic mainten
ance functions of cleaning coils and cleaning and
replacing filters. All other operations should be
performed by trained service personnel. When
working on air conditioning equipment, observe
precautions in the literature, tags and labels
attached to the unit and other safety precautions
that may apply.
Follow all safety codes. Wear safety glasses and
work gloves. Use quenching cloth for brazing
operations. Have fire extinguishers available for all
brazing operations.
WARNING; Before performing service or
mabiienaace operations oa system, turn off
rsi^ swsidr io sodoor anti and oatdoor
onit, Tam acces&oiy Sweater power switch if
applicate. shock, conld cause per-
I'duct conn
FLANGE
© Carrier Corporation 1980
Fig. 1 — Dimensions and Connections
Form 50WQ-2SI
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1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - Water Source Heat Pumps

Number OneAirConditbninqMakerDivision of Carrier Corporation' ; '*• : '^•s\- >: .vt •: ; ': <?!v:'! ••• ' .*!

Page 2

Compressor Removal — See Table 6 for compressor information and Fig. 5 for component location. Follow safety codes, and wear safety gl

Page 3 - -9 6"

Indoor Fan Wheel should»be centered in housing.To adjust fan, loosen setscrew holding fan to motorshaft. Adjust fan and retighten setscrew.INDOOR BLOW

Page 4

For replacement items use Carrier Specified Parts.Manufacturer reserves the right to discontinue, or change at any time, specifications or designs wit

Page 5 - COOLING CYCLE

' " Table 1— Installation Data (s®e Fi^- 1)•MODEL 50WQ1 014018022027 1 033042OPER WT (lb)220240260,^270 f290320DIMENSIONS (ft-in.)A1-10-1/8

Page 6 - Component Location

Table 2 — Electrical Data (60-Hz)MODEL50WQ "014*“ 018 022 027 033 ""042 " 033"- 042 033 042V/PH208-230/1" -23Ö/T- 208-2

Page 7

M_____—^YEL —_____—^YEL —1-PHASE CONN TO DISCONNECT- PER NECGROUNDLEAD—^BLK —,__^GROUND—Hä] LUG3-PHASE CONN. TO DISCONNECT- PER NEC----- _^^YEL-^^YEL-

Page 8 - 150 200 250 300

##CURRENT AND TEMPERATURE SENSITIVE OVERLOAD (linebreak) internal on all compressors except on 50WQ014 which has external shell mounted overl

Page 9 - Check Chart (R-22)

MODEL 50WQ R-22 CHG (Ib-oz)'* Refrig controlDiameter (in. Nom) Width (in. Nom) Range Cfm Motor HpMotor Rpm (3 speed)Water Flow Range (Gpm)0141 5-

Page 10

COOLING CYCLECHARGING CHARTMETHODL Operate unit a minimum of 10 minutes before checking charge, and after each charge adjustment.2. Meas

Page 11 - Indoor Fan and Motor Removal

Fig. 10 — 50WQ022 Cooling Cycle Charging Chart (R-22)COMPRESSOR DISCHARGE PRESSURE @ SERVICE PORT(PSIG)Fig. 13 — 50WQ027 Heating Cycle Operation Check

Page 12

##COMPRESSOR DISCHARGE PRESSURE® SERVICE PORT (PSIG)Fig. 16 — 50WQ042 Cooling Cycle Charging Chart (R-22)Fig. 17 — 50WQ042 Heating Cycle Operation Che

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