Bryant CH17NA Installation Instructions Manual
Bryant CH17NA Installation Instructions Manual

Bryant CH17NA Installation Instructions Manual

2--stage split--system heat pump with puron refrigerant 2 -- 5 tons

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SAFETY CONSIDERATIONS
NOTE: Read the entire instruction manual before starting the
installation.
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory- -authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
current editions of the National Electrical Code (NEC) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.
Recognize safety information. This is the safety- -alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety- -alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury
or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which would result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or operation.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
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.
WARNING
!
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors.
mixtures of air or gases containing
oxygen can lead to an explosion.
Installation Instructions
Pressurized
,2- -STAGE SPLIT- -SYSTEM HEAT PUMP
WITH PURON
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate
for unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding un-
necessary turns and bends.
4. Leave some slack between structure and unit to absorb vi-
bration.
5. When passing refrigerant tubes through the wall, seal open-
ing with RTV or other pliable silicon- -based caulk. (See Fig.
1.)
6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with
tubing.(See Fig. 1.)
8. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. (25.4
mm) wide and conform to shape of tubing insulation. (See
Fig. 1.)
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
OUTDOOR WALL
CAULK
INSULATION
THROUGH THE WALL
HANGER STRAP
(AROUND SUCTION
TUBE ONLY)
1" (25.4 mm)
MIN
SUSPENSION
Fig. 1 - - Piping Installation
When outdoor unit is connected to factory- -approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
AHRI rated indoor unit when connected by 15 ft. (4.57 m) of
field- -supplied or factory accessory tubing. For proper unit
operation, check refrigerant charge using charging information
located on control box cover and/or in the Check Charge section of
this instruction.
IMPORTANT: Maximum liquid- -line size is 3/8- -in. OD for all
residential applications including line line.
IMPORTANT: Always install the factory- -supplied liquid- -line
filter drier. Obtain replacement filter driers from your distributor or
branch.
CH17NA
R
REFRIGERANT
2 - - 5 TONS
INDOOR WALL
LIQUID TUBE
SUCTION TUBE
JOIST
INSULATION
SUCTION TUBE
LIQUID TUBE
A94026

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Summary of Contents for Bryant CH17NA

  • Page 1 CH17NA ,2- -STAGE SPLIT- -SYSTEM HEAT PUMP WITH PURON REFRIGERANT 2 - - 5 TONS Installation Instructions SAFETY CONSIDERATIONS INSTALLATION RECOMMENDATIONS NOTE: Read the entire instruction manual before starting the NOTE: In some cases noise in the living area has been traced to installation.
  • Page 2: Installation

    INSTALLATION 3/8--- in. (9.53 mm) Dia. Tiedown Knockouts in IMPORTANT: Effective January 1, 2015, all split system and Basepan(2) Places packaged air conditioners must be installed pursuant to applicable regional efficiency standards issued by the Department of Energy. CAUTION CUT HAZARD Failure to follow this caution may result in personal injury.
  • Page 3: Make Piping Connections

    Table 1 – Accessory Usage Required for Low Ambient Required for Sea Coast Required for Long Line Accessory Cooling Applications Applications Applications* (Below 55° F / 12.8° C) (within 2 miles/3.2 km) Compressor Start Assist Capacitor and Relay Crankcase Heater Yes (standard) Yes (standard) Evaporator Freeze Thermostat...
  • Page 4: Fire Hazard

    For Vapor Service Valve - - remove valve core from schrader port BRASS NUT on Service Valve BEFORE brazing. This helps prevent ADAPTER TUBE overheating and damage to valve seals (refer to Fig. 5). Replace PLASTIC WASHER valve core when brazing is completed. PISTON SERVICE VALVE PISTON BODY...
  • Page 5: Make Electrical Connections

    liquid water. A tight dry system will hold a vacuum of 1000 Remove access panel to gain access to unit wiring. Extend wires microns after approximately 7 minutes. See Fig. 7. from disconnect through power wiring hole provided and into unit control box.
  • Page 6: Compressor Crankcase Heater

    Thermidistat Fan Coil Heat Pump Thermidistat Furnace Heat Pump RVS Cooling O/B W2 RVS Cooling O/B W2 J2 Jumper Heat Stage 3 W/W1 W/W1 (furnace) Heat Stage 3 W/W1 on Control Board Heat/Cool Stage 1 Y1 / W2 Heat/Cool Stage 1 Y1 / W2 Heat/Cool Stage 2 Y/Y2...
  • Page 7 Airflow Selection for FV4C Fan Coils of the indoor thermostat. After the second stage is satisfied, the unit returns to low- -stage operation until second stage is required (non- -communicating) again. When both, first and second stage cooling or heating are The FV4C provides high- - and low- -stage blower operation to satisfied, the compressor will shut off.
  • Page 8: Check Charge

    the reversing valve will be energized. A few seconds later, the Check Charge compressor will be re- -energized and the normal defrost cycle NOTE: CHARGE IN HIGH STAGE ONLY. starts. Factory charge amount and desired subcooling are shown on unit Once defrost termination conditions have been met, the following rating plate.
  • Page 9: Final Checks

    TROUBLESHOOTING Unloader Test Procedure The unloader is the compressor internal mechanism, controlled by If the compressor fails to operate with a cooling call, the table the DC solenoid, that modulates between high and low stage. If it below (Resistance table) can be used to verify if there is any is suspected that the unloader is not working, the following damage to the compressor windings causing system malfunction.
  • Page 10 S Observe all warnings, cautions, and bold text. S All indoor coils must be installed with a hard shutoff R- -410A TXV metering device. Catalog No: CH17NA ---01SI Copyright 2017 CAC/BDP S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 07/17 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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