Introduction, Installation, Fig. 2 — water piping – Carrier 50WQ User Manual

Page 2

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' " Table 1

— Installation Data (s®e Fi^- 1)

•

MODEL 50WQ

1 014

018

022

027 1

033

042

OPER WT (lb)

220

240

260

,^270

290

320

DIMENSIONS (ft-in.)

1-10-1/8 (Includes Filter Section)

1-9-1/8

2-10-5/16

3- 2-5/16 1

3- 2-5/16

0- 1-1/2

0-3

0- 1-5/8

0- 7-5/8

0- 5-7/8

SUPPLY DUCT CONN.

(ft-in.) F

0-11-1/4

0-11-1/4 1

0-11-1/4

0-10-1/4

0-11-7/8

1- 1-5/8

FILfER (1)

Disposable. 1 -in thick

Size (in.)

16x20

20x20

INTRODUCTION

The 50WQ units are completely self-contained

cooling and heating systems. They are water-to-air
heat pumps designed for indoor installation. They
may be connected into existing duct systems which
are properly sized and designed to handle air
quantity of 350 to 450 cfm per ton of cooling. Re

quired connections include supply air duct, water
supply and return lines, high- and low-voltage
wiring. Factory-supplied air filter is installed in rack
on unit return air section. See Table I for filter size.

Use recommended thermostat and subbase (Table 3)

for proper unit operation.

INSTALLATION

Step 1 — Check Equipment and Jobsite

UNPACKAGE UNIT — Move to final location.
Slide from carton taking special care not to damage
service valves or grilles.
INSPECT EQUIPMENT — File claim with ship

ping company if shipment is damaged or incomplete.

COMPLETE OR CONSIDER THESE SYSTEM
REQUIREMENTS before installation:
a. Consult local building codes and National Elec

trical Code (NEC) for special installation
requirements.

b. Consider type of water source. Ensure there is an

adequate supply of water at temperature of 45 F
to 90 F with minimum pressure of 10 psig.

c. Provide sufficient space for water piping, con

densate drain, wiring and servicing unit. See

Fig. 1. When front (external) water piping

connections are used, locate unit so piping does
not block front access panels. (Units installed in
confined areas may have to be removed for major

servicing such as compressor or fan motor
replacement.)

d. Provide a minimum 6-in. clearance between

return air filter and adjacent wall.

e. Mount 50WQ on floor or solid platform so unit is

elevated. Make sure unit is supported from the
bottom. To reduce sound transmission, es
pecially when 50WQ is located in a closet or
utility room having louvered doors, the following

acoustical treatment is recommended; place an
isolation pad under unit. Pad must be same size
as unit base. Construct a 1-in. fiberglass sound

shield in front of unit.

Step 2 — Connect Supply Ductwork

to unit

supply air duct connection flange. Refer to Fig. 1
and Table 1 for connection size and location. If
necessary, refer to Carrier System Design

Manual, Part 2, for system air duct design. When

designing and installing ductwork, consider the
following:
a. Size duct for 350 to 450 cfm per ton of cooling

capacity.

b. Avoid abrupt duct size increases and reductions.
c. Use flexible connectors between ductwork and

unit to prevent transmission of vibration.

BALANCING VALVES
(2) WITH SHUTOFF

MIN

CONDENSATE TRAP

CONDENSATE DRAIN

'WATER

REGULATING
VALVE

SUPPLY RETURN
WATER WATER

► AIRFLOW

Fig. 2 — Water Piping