Step 5 - Install Supply And Return Piping; Supply And Return Hoses; Supply And Return Piping; Step 6 - Install Condensate Piping - Carrier Aquazone 50PEC09-18 Installation, Start-Up And Service Instructions Manual

50PEC VOLTAGE
UNIT SIZE V-PH-Hz
115-1-60
09 208/230-1-60
265-1-60
115-1-60
12 208/230-1-60
265-1-60
115-1-60
15 208/230-1-60
265-1-60
208/230-1-60
18
265-1-60
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
LRA — Locked Rotor Amps
RLA — Rated Load Amps
Step 5 — Install Supply and Return Piping
CAUTION
To ensure proper functioning of unit and system, be sure to
connect entering water to upper pipe on right-hand units.
On left-hand units, connect entering water to lower pipe.
Failure to do so could result in equipment damage.
SUPPLY AND RETURN HOSES — Optional pressure-rated
hose assemblies are available for use with units. Use the fol-
lowing guidelines when installing supply and return hose
assemblies.
1. Install supply and return hoses fitted with swivel-joint
fittings at one end to prevent the hose from twisting.
2. Use male adapters to secure the hose assembly to the unit
and the riser.
3. Do not allow the hose to twist during installation. Twist-
ing may damage the hose wall or the rubber compound.
4. Use pipe joint compound sparingly on the fitting adapt-
ers' male pipe threads.
5. Prevent sealant from reaching the joint's flared surfaces.
6. Do not use pipe joint compound when Teflon* thread
tape is pre-applied to hose assemblies or when flared-end
connections are used.
7. Maximum torque that may be applied to brass fittings is
30 ft-lb. When a torque wrench is not used, tighten brass
fittings finger-tight plus one quarter turn.
8. Tighten steel fittings as necessary.
9. Use shut-off/balancing valves, flow indicators, and drain
tees in the supply runout and return at each floor to aid in
loop balancing and servicing.
SUPPLY AND RETURN PIPING — System piping MUST
comply with all applicable codes. The following items should
be adhered to in addition to applicable piping codes.
• A drain valve at the base of each riser to enable proper
flushing of the system at start-up and during servicing.
• Shut-off/isolation ball valves at the supply and return
connections and unions at each unit to permit proper
flow balancing and unit servicing.
• Strainers at the inlet of each circulating pump.
• Use of Teflon tape on threaded pipe fittings to eliminate
water leaks and ensure against air entering the system.
• Flexible hose connections between the unit and the rigid
system to eliminate the possibility of vibration transmis-
sion through the piping.
* Registered trademark of DuPont.
Table 2 — Electrical Data — 50PEC Units
COMPRESSOR
QTY RLA LRA
1 7.0 45.6
1 3.4 22.2
1 2.9 18.8
1 9.6 58.4
1 4.6 27.9
1 3.8 22.2
1 12.7 63.0
1 5.6 29.0
1 4.6 20.0
1 7.4 33.0
1 6.0 28.0
BLOWER
QTY FLA
1 2.1
1 0.7
1 1.0
1 2.1
1 0.7
1 1.0
1 1.3
1 0.8
1 0.8
1 0.8
1 0.8
• Insulation is not normally required on supply and return
piping for boiler tower installations except in unheated
sections or outdoor runs.
• Insulation is required for closed-loop geothermal instal-
lations as loop temperatures may fall below the dew
point and can even fall below the freezing point of water
during heating season.
1. Install a drain valve at the base of each supply and return
riser to enable system flushing at start-up and during rou-
tine servicing.
2. Install shut-off/balancing valves and unions at each unit
to allow unit removal for servicing.
NOTE: If flex hoses are used, unions are not necessary.
3. Install strainers at the inlet of each system circulating
pump.
IMPORTANT: Since loop temperatures are normally
between 60 and 90 F, pipe sweating and heat loss do not
occur at normal ambient temperature conditions. Insulation
must be installed on loop water piping on those sections
that run through unheated areas or are located outside the
building. If loop temperatures are expected below the
ambient dew point, the optional internal insulation
(extended range) package must be ordered.
DO NOT bend or kink supply lines or hoses. Damage to
unit may result.
4. Before making the final water connections, flush the sys-
tem as described in the Pre-Start-Up section of this
manual. After flushing the system, connect piping and
hoses to the proper supply, return and condensate connec-
tions of the unit.
NOTE: When necessary, use adapters to connect hoses.
5. Install any other system components, as required, follow-
ing manufacturer's instructions.
6. Reinstall the front cabinet by carefully lowering the front
cabinet over the chassis onto the backplate.
Step 6 — Install Condensate Piping —
units are designed with a blow-through configuration in the air
handling section. This means that there is positive pressure at
the unit drain pan and thus trapping is not required. Conden-
sate is routed from the drain pan via a
vinyl hose that is located below the supply and return water
connections.
9
MIN CIRCUIT MAX FUSE/
AMPS
HP
0.10 10.9
0.10 5.0
0.10 4.6
0.10 14.1
0.10 6.5
0.10 5.8
0.25 17.2
0.25 7.8
0.25 6.6
0.25 10.1
0.25 8.3
CAUTION
Console
/ -in. non-pressure rated
5
8
HACR
15
15
15
20
15
15
25
15
15
15
15