ROYALTON 4HP14/15 User Manual

INSTALLATION INSTRUCTIONS

4HP14/15 SPLIT SYSTEM HEAT PUMP

(R410A REFRIGERANT)

This manual must be left with the homeowner for future reference.

This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.

Table of Contents

Safety Precautions ......................................................2

Installation ...................................................................2

Electrical Connections ................................................. 5

Start-Up Procedure...................................................... 6

Operation .....................................................................7

Homeowner’s Information .........................................10

NOTE TO INSTALLING DEALER

These instructions and warranty are to be given to the
owner or displayed near the indoor air handler unit.

CAUTION

Improper installation, adjustment, alteration, service
or maintenance will void the warranty. The qualied
installer or agency must use factory-authorized kits
or accessories when added to this products. Refer to
the individual instructions included with the specic
accessory kit.

NOTE

These instructions are intended as a general guide and
do not supersede national, state or local codes in any
way.

WARNING

Installation or repairs made by unqualied persons can

result in hazards to you and others. Installation MUST

conform with local building codes and with the National
Electrical Code NFPA 70/ANSI C1-1993 or current
edition and Canadian Electrical Code Part 1 CSA C22.1.

WARNING

Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out
and tag switch with a suitable warning label. Electrical
shock can cause personal injury or death.

215 Metropolitan Drive

West Columbia, SC 29170

Save these instructions for future reference

*P506318-03*

(P) 506318-03

Page 1 of 11506318-03 Issue 1850

These units are designed for use in residential and

light commercial type buildings. Heat Pumps may only
be installed with indoor combinations listed in the Air

Conditioning, Heating and Refrigeration Institute (AHRI)

Directory of Certied Products.

Inspect the unit for any damage before installation. If
damage is found, notify the transportation company
immediately and le a concealed damage claim.

Safety Precautions

Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations.
Have re extinguisher available. Read these instructions
thoroughly and follow all warning or cautions attached to

the unit.

1. Always wear proper personal protection equipment.

2. Always disconnect electrical power before removing

panel or servicing equipment.

3. Keep hands and clothing away from moving parts.

4. Handle refrigerant with caution, refer to proper MSDS
from refrigerant supplier.

5. Use care when lifting, avoid contact with sharp edges.

Installation

NOTE: In some cases noise in the living area has been

traced to gas pulsations from improper installation of
equipment.

1. Locate unit away form windows, patios, decks, etc.
where unit operation sounds may disturb customer.

2. Ensure that vapor and liquid tube diameters are

appropriate to capacity of unit.

3. Run refrigerant tubes as directly as possible by
avoiding unnecessary turns and bends.

4. Leave some slack between structure and unit to
absorb vibration.

5. When passing refrigerant tubes through the wall, seal

opening with RTV or other silicon-based caulk.

6. Avoid direct tubing contact with water pipes, duct work,
oor joists, wall studs, oors, walls, and any structure.

7. Do not suspend refrigerant tubing from joists and

studs with a rigid wire or strap which comes in direct
contact with tubing.

8. Ensure that tubing insulation is pliable and completely
surrounds vapor tube.

When outdoor unit is connected to factory-approved indoor
unit, outdoor unit contains system refrigerant charge for
operation with indoor unit of the same size when connected
by 15 ft. of eld-supplied tubing. For proper unit operation,
check refrigerant charge using charging information
located on control box cover.

NOTE: Maximum liquid-line size is 3/8 in. O.D. for all
residential applications including long lines.

Outdoor Section

Zoning ordinances may govern the minimum distance the
condensing unit can be installed from the property line.

Install on a Solid, Level Mounting Pad

The outdoor section is to be installed on a solid foundation.
This foundation should extend a minimum of 2” (inches)
beyond the sides of the outdoor section. To reduce the

possibility of noise transmission, the foundation slab

should NOT be in contact with or be an integral part of the

building foundation.

Elevate Unit

CAUTION

Accumulation of water and ice in base pan may cause

equipment damage.

Elevate unit per local climate and code requirements to
provide clearance above estimated snowfall level and
ensure adequate drainage of unit. Use snow stand in areas
where prolonged freezing temperatures are encountered.

If conditions or local codes require the unit be attached to
pad or mounting frame, tie down bolts should be used and
fastened through knockouts provided in unit base pan.

Rooftop Installations

Mount on level platform or frame 6 inches above roof
surface. Place unit above a load-bearing wall and isolate
unit and tubing set from structure. Arrange supporting

members to adequately support unit and minimize

transmission of vibration to building. Ensure roof structure
and anchoring method is adequate for location. Consult
local codes governing rooftop applications.

Roof mounted units exposed to winds above 5 mph may
require wind bafes to achieve adequate defrost. A sheet
metal bafe should be spaced 6-1/2” from the fall of the
coil. The height should cover the face of the coil and the
length should be 6” from the access panel.

NOTE: Unit must be level to within ± 1/4 in./ft. per

compressor manufacturer specications.

Clearance Requirements

When installing, allow sufcient space for airow clearance,
wiring, refrigerant piping, and service. For proper airow,
quiet operation and maximum efciency. Position so water,
snow, or ice from roof or eaves cannot fall directly on unit.

506318-03Page 2 of 11 Issue 1850

Figure 1.

Liquid Vapor

Capacity

-018 3/8” 3/8” 3/4” 3/4”

-024 3/8” 3/8” 3/4” 3/4”

-030 3/8” 3/8” 3/4” 3/4”

-036 3/8” 3/8” 7/8” 7/8”

-042 3/8” 3/8” 7/8” 7/8”

-048 3/8” 3/8” 7/8” 7/8”

-060 3/8” 3/8” 7/8” *1-1/8”

* Field supplied 7/8 x 1-1/8 connector required on both ends

of vapor tubing.

Connections

Dia.

Tube

Dia.

Connections

Dia.

Tube

Dia.

Table 1. Recommended Liquid & Vapor Tube

Diameters (in.)

DO LOCATE THE UNIT:

• With proper clearances on sides and top of unit

• On a solid, level foundation or pad

• To minimize refrigerant line lengths

DO NOT LOCATE THE UNIT:

• On brick, concrete blocks or unstable surfaces

• Near clothes dryer exhaust vents

• Near sleeping area or near windows

• Under eaves where water, snow or ice can fall directly
on the unit

• With clearance less than 2 ft. from a second unit

• With clearance less than 4 ft. on top of unit

Operating Ambient

The minimum outdoor operating ambient in cooling mode

is 55°F, and the maximum outdoor operating ambient in

cooling mode is 125°F. The maximum outdoor operating

ambient in heating mode is 66°F.

Refrigeration Line Sets

Use only refrigerant grade copper tubes. Split systems
may be installed with up to 50 feet of line set (no more than
20 feet vertical) without special consideration (see long

line set guidelines).

It is important that no tubing be cut or seals broken until you
are ready to actually make connections to the evaporator
and to the condenser section. DO NOT remove rubber
plugs or copper caps from the tube ends until ready to
make connections at evaporator and condenser. Under no
circumstances leave the lines open to the atmosphere for
any period of time, if so unit requires additional evacuation

to remove moisture.

Be extra careful with sharp bends. Tubing can “kink” very
easily, and if this occurs, the entire tube length will have
to be replaced. Extra care at this time will eliminate future
service problems.

It is recommended that vertical suction risers not be up­sized. Proper oil return to the compressor should be
maintained with suction gas velocity.

Filter Drier

The lter drier is very important for proper system operation

and reliability. If the drier is shipped loose, it must be

installed by the installer in the eld. Unit warranty will be

void, if the drier is not installed.

Installation of Line Sets

DO NOT fasten liquid or suction lines in direct contact with
the oor or ceiling joist. Use an insulated or suspension
type of hanger. Keep both lines separate, and always
insulate the suction line. Long liquid line runs (30 feet or
more) in an attic will require insulation. Route refrigeration

line sets to minimize length.

DO NOT let refrigerant lines come in direct contact with

foundation. When running refrigerant lines through the

foundation or wall, openings should allow for a sound
and vibration absorbing material to be placed or installed
between tubing and foundation. Any gap between
foundation or wall and refrigerant lines should be lled with

a vibration damping material.

CAUTION

If ANY refrigerant tubing is required to be buried by state

or local codes, provide a 6 inch vertical rise at service

valve.

Page 3 of 11506318-03 Issue 1850

Before making braze connections, be sure all joints are
clean. Before heat is applied for brazing, dry nitrogen
should be owing through the tubing to prevent oxidation
and scale formation on the inside of the tubing.

The following is the recommended method for making
braze connections at the refrigerant line connections:

1. Debur and clean refrigerant tube end with emery cloth
or steel brush.

2. Insert tubing into swage tting connection.

3. Wrap wet rags over valves to protect from heat.

4. Allow dry nitrogen to ow through refrigerant lines.

5. Braze joint, using a suitable brazing alloy for copper to

copper joints.

6. Quench the joint and tubing with water using a wet
rag. Leave rag on tting body and re-wet with water to
help cool area.

Leak Check

Refrigeration lines and indoor coil must be checked for leaks
after brazing and before evacuation. The recommended
procedure is to apply a trace amount of vapor refrigerant
(approximately two ounces or 3 psig) into the line set and
indoor coil, then pressurize with 150 psig of dry nitrogen.
Use a refrigerant leak detector to check all joints. The
system may also be checked for leaks using a halide torch
or pressure and soapy solution. After completion of leak
check, relieve all pressure from system before evacuation.

Evacuating and Charging Instructions

NOTE: Intentional release of CFC or HCFC refrigerant to
the atmosphere violates Federal Law. It may also violate
State and Local Codes. Check all Federal, State and Local
Codes before proceeding.

These outdoor units are pre-charged at the factory with

adequate refrigerant to handle 15 feet of refrigerant tubing.

NOTE: DO NOT use any portion of the charge for purging
or leak testing. It is mandatory that a thorough evacuation
of the refrigeration lines and indoor coil be performed.

The liquid line and suction line service valves have been
closed after nal testing at the factory. DO NOT disturb

these valves until the lines have been leak checked
and evacuated or the charge in the unit may be lost.

1. Connect the vacuum pump to the center hose of the
manifold gauge set, the low-pressure manifold gauge
to the vapor service valve and the high pressure
manifold gauge to the liquid service valve.

NOTE: Unnecessary switching of hoses can be
avoided and complete evacuation of all lines can
be achieved by also connecting a branch hose from
the manifold gauge center port to a cylinder of the
proper refrigerant. Provide a separate shut-off valve to
vacuum pump to avoid contaminating vacuum pump
oil with refrigerant.

2. The valves should be kept in the “front seated” (closed)
position. This will allow evacuation of the refrigeration
lines and the indoor coil, without disturbing the factory
charge in the outdoor unit.

3. Follow the vacuum pump manufacturer’s instructions.
Allow the pump to operate until the system has been
evacuated down to 300 microns. Allow the pump to
continue running for an additional 15 minutes. Turn
OFF the pump and leave the connections secured to
the two (2) service valves. After 5 minutes, if the system
fails to hold 500 microns or less, check all connections
for tight t and repeat the evacuation procedure.

4. Isolate the vacuum pump from the system by closing
the shutoff valves on the gauge-set. Disconnect the
vacuum pump.

Opening Service Valves

After evacuation of the connecting lines, remove the
service valve cap and fully insert the hex wrench into the
stem. A back-up wrench is required on the valve body to
open the valve stem. Back-out counterclockwise until the
valve stem just touches the coined edge.

Wrench sizes:

• 3/8 service valve: 3/16” Hex wrench

• 3/4 service valve: 5/16” Hex wrench

• 7/8 service valve: 5/16” Hex wrench

Replace service valve cap and torque to 8-11 ft-lb on
3/8” valves; 12-15 ft-lb on 3/4” valves; 15-20 ft-lb on 7/8”
valves. Use backup wrench on valve body when torquing
valve cap.

Install Electrical Accessories

Refer to the instructions packaged with the accessories.

506318-03Page 4 of 11 Issue 1850