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Nyle C25W - User Manual

Nyle C25W
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www.nyle.com
watersales@nyle.com
800-777-6953
Nyle Systems
12 Stevens Rd
Brewer, ME 04412
User Manual
Geyser C-Series Water
Source Heat Pump Water
Heaters
PLACE THESE INSTRUCTIONS ADJACENT TO HEAT PUMP AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
2018
MODELS C25W-C250W
Installation-Operation-Service
Maintenance-Limited Warranty
FOR INDOOR/OUTDOOR INSTALLATION
7
GROUNDING INSTRUCTIONS
This heat pump water heater must be grounded in accordance
with the National Electrical Code and/or local codes. These must
be followed in all cases. Failure to ground this water heater
properly may also cause erratic control system operation.
This heat pump water heater must be connected to a grounded
metal, permanent wiring system; or an equipment grounding
conductor must be run with the circuit conductors and connected
to the equipment grounding terminal or lead on the water heater.
GENERAL SAFETY INFORMATION
PRECAUTIONS
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN
UNDER WATER. Immediately call a qualied service agency to
inspect the appliance and to make a determination on what steps
should be taken next.
If the unit is exposed to the following, do not operate heater
until all corrective steps have been made by a qualied service
agency.
1. External re.
2. Damage.
3. Running without water.
When servicing this unit, verify the power to the unit is turned off prior to opening the control cabinet door.
CONTAINS REFRIGERANT!
System contains oil and refrigerant under high pressure. Recover
refrigerant to relieve pressure before opening the system. See unit
rating label for refrigerant type. Do not use non-approved refrigerants,
refrigerant substitutes, or refrigerant additives.
Failure to follow proper procedures or the use of non-approved
refrigerants, refrigerant substitutes, or refrigerant additives could
result in death or serious injury or equipment damage.
Explosion Hazard
Do not use oxygen to purge or
pressurize system for leak test.
Oxygen reacts violently with oil,
which can cause an explosion
resulting in severe personal
injury or death.
Turn off power to the water heater
before performing any service.
Electrical Shock Hazard
Label all wires prior to disconnecting
when performing service. Wiring errors
can cause improper and dangerous
operation.
Verify proper operation after servicing.
Failure to follow these instructions can
result in personal injury or death.
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
Explosion Hazard
Overheated water can cause
water tank explosion.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided
on connected storage tanks.

Table of Contents

Other manuals for Nyle C25W

Questions and Answers

  • C
    carolbrockAug 17, 2025
    What to do if the Nyle C25W heat pump is not running due to electrical issues?
    • S
      Samantha JohnsonAug 17, 2025
      If your Nyle Water Heater's heat pump isn't running because of electrical problems, there are several things to check: * Ensure the circuit has adequate ampacity, referring to the unit's nameplate for requirements. * Inspect field wiring for short circuits or loose connections and tighten them. * Check for loose wiring within the cabinet and tighten. * Consider replacing the thermostat if it has failed. * Reset the phase monitor if the anti-short cycle timer is defective. * If the compressor has burned out, it will need to be replaced.
  • J
    Jack RobertsAug 19, 2025
    What to do if there is water on the floor around the Nyle Water Heater heat pump or water tank?
    • R
      Robert CruzAug 19, 2025
      If you find water on the floor around your Nyle Water Heater's heat pump or water tank, here’s what to do: * Check for leaks in tubing, valves, or fittings and repair them. * Ensure the heat pump is level; if not, shim it. * Verify the condensate trap is installed correctly to maintain a water column during operation. * Address drain pan overflow by removing obstructions with a pipe snake or compressed air. * In humid environments, condensation may form on the unit's bottom; cover it with foam insulation.
  • A
    Ashley HamiltonAug 22, 2025
    Why is my Nyle C25W heat pump not running and showing a high-pressure fault?
    • C
      christopher63Aug 22, 2025
      If your Nyle Water Heater heat pump isn't running due to a high-pressure fault, consider these potential causes: * The thermostat setting might be too high; it should not exceed 160°F. * The air temperature may be over 95°F; keep the heat pump off until the room temperature is back in the operating range. * Low water flow could be the issue. Possible solutions include: * Replacing the unit pump. * Reducing piping or adding a booster pump. * Cleaning the heat exchanger with a mild acid wash. * Ensuring all shut-off valves are fully open.
  • A
    Ashley LeeAug 26, 2025
    Why is my Nyle C25W Water Heater water never hot enough?
    • S
      Spencer Hicks DDSAug 26, 2025
      If the water from your Nyle Water Heater is never hot enough, consider the following: * The thermostat setting might be too low; set it to a higher temperature. * The heat pump or storage tank might be undersized for your application; increase the storage tank size or install a gas or electric heater to compensate. * Ensure the heat pump is properly connected to the storage tank, referring to field piping diagrams for recommended piping. * If the unit cooling coil is over-cooling the space: * Use back-up water heating. * Duct cool air to another space. * Duct warmer air from another space to the installed room.
  • R
    robertstoutAug 28, 2025
    Why is my Nyle C25W heat pump not running and showing a low pressure fault?
    • H
      halljustinAug 28, 2025
      If your Nyle Water Heater heat pump isn't running due to a low-pressure fault, check these potential causes: * If the room temperature is below 40°F, keep the heat pump off until the room temperature is back in the operating range. * If the blower isn't operating at the nameplate CFM because the blower belt is broken, out of alignment or the filters are dirty: * Replace or realign the pulley assembly and tighten the belt at the adjustable pulley. * Replace the filters. * Ensure the unit has adequate clearances to prevent obstructing airflow; relocate the unit if necessary. * If there's a loss of refrigerant, find the source of the leak, repair it, and recharge the system.
  • C
    Christopher Flores Jr.Aug 30, 2025
    How to fix a noisy Nyle C25W heat pump?
    • N
      Natasha LeeAug 30, 2025
      To address a noisy Nyle Water Heater heat pump: * Tighten fasteners. * Place vibration dampers underneath the unit. * Tighten or align pulleys.
  • D
    Diana CoffeySep 2, 2025
    What to do if my Nyle C25W Water Heater heat pump is not running due to electrical issues?
    • R
      Robert CobbSep 2, 2025
      If your Nyle Water Heater's heat pump isn't running due to electrical issues, it could be due to several reasons. The circuit might not have adequate ampacity, so refer to the nameplate for unit requirements. There might be a short circuit or loose connection in the field wiring, in which case you should check the field wiring diagram and tighten all connections. Also, check for loose wiring inside the cabinet and tighten those connections. A thermostat failure or a defective anti-short cycle timer could also be the cause; try replacing the thermostat or resetting the phase monitor. In the worst case, the compressor might have burned out, requiring a compressor replacement.
  • M
    Mary WhiteSep 5, 2025
    What causes a Nyle Water Heater heat pump to not run due to a high pressure fault?
    • S
      Sydney WoodsSep 5, 2025
      If your Nyle Water Heater's heat pump isn't running due to a high-pressure fault, it could be because the thermostat setting is too high; it should not exceed 150°F. Another cause could be that the source water temperature is over 100° F; in that case, keep the heat pump off until the room temperature is back in the operating range. Low water flow could also be the culprit. To correct low water flow, consider replacing the unit pump, reducing piping or adding a booster pump, cleaning the heat exchanger with a mild acid wash, and ensuring all shut-off valves are open.
  • M
    Megan RossSep 8, 2025
    What to do if there's water on the floor around my Nyle Water Heater?
    • L
      Lance MurphySep 8, 2025
      If there is water on the floor around your Nyle Water Heater's heat pump or water tank, it could be due to leaking tubing, valves, or fittings; repair these leaks as necessary. Alternatively, condensation might be forming on the bottom of the unit. In this case, shim the unit to level it, and cover the bottom of the unit with foam insulation.
  • M
    Monica CooperSep 12, 2025
    Why is my Nyle C25W heat pump not running due to a low pressure fault?
    • T
      Tracy SolomonSep 12, 2025
      If your Nyle Water Heater is not running due to a low-pressure fault, it could be because the source water temperature is below 40°F. In this case, keep the heat pump off until the room temperature is back in the operating range. Another possible cause is a loss of refrigerant. If this is the case, find the source of the leak, repair it, and recharge the system.

Nyle C25W Specifications

General IconGeneral
BrandNyle
ModelC25W
CategoryWater Heater
LanguageEnglish

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