ERHQ011AAV3 Installation manual Outdoor unit for air to water heat pump ERHQ014AAV3 ERHQ016AAV3 ONTENTS Page WARNING Safety considerations ................ 1 For use of air-conditioning units in applications with temperature alarm settings it is advised to foresee a Before installation................2 delay of 10 minutes for signalling the alarm in case Selecting installation site..............
WARNING CAUTION Before touching electric terminal parts, turn off power Do not install the unit in places such as the following: switch. Where there is mist of mineral oil, oil spray or Live parts can be easily touched by accident. vapour for example a kitchen.
Accessories Places where the indoor and outdoor units' piping and wiring lengths come within the allowable ranges. Check if the following accessories are included with the unit Places where water leaking from the unit cannot cause damage to the location (e.g. in case of a blocked drain pipe). Places where the rain can be avoided as much as possible.
Selecting a location in cold climates Drain work If drain work is necessary, follow the guidelines below. CAUTION Drain kits for drainage are available as option. When operating the outdoor unit in a low outdoor ambient If drain work from the outdoor unit causes trouble (for example, if temperature, be sure to follow the instructions described the drain water may splash on people) provide the drain piping below.
(B) In case of stacked installation EFRIGERANT PIPE SIZE AND ALLOWABLE PIPE In case obstacles exist in front of the outlet side. LENGTH All field piping must be installed by a licensed refrigeration technician and must comply with relevant local and national regulations.
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Brazing guidelines In order to prevent dirt, liquid or dust from entering the piping, cure the piping with a pinch or taping. Make sure to blow through with nitrogen when brazing. Blowing through with nitrogen prevents the creation of large quantities of oxidized film on the inside of the piping.
When it is expected that the operating pressure will be low (for EFRIGERANT PIPING example, when cooling will be performed while the outside air temperature is low), sufficiently seal the flare nut in the stop Field pipes can be installed in four directions. valve on the gas line with silicon sealant to prevent freezing.
If the temperature is higher than 30°C and the humidity is higher Do not purge the air with refrigerants. Use a vacuum than RH 80%, then the thickness of the sealing materials should pump to evacuate the installation. No additional be at least 20 mm in order to avoid condensation on the surface refrigerant is provided for air purging.
Before charging, check whether the refrigerant cylinder has a HARGING REFRIGERANT syphon attached or not and position the cylinder accordingly. Filling using a cylinder Filling using a cylinder Important information regarding the refrigerant used with a siphon attached without a siphon attached Charge the liquid refrigerant Charge the liquid refrigerant with the cylinder in upright...
Secure the electrical wiring with cable ties as shown in the figure UMP DOWN OPERATION below so that it does not come in contact with the piping, particularly on the high-pressure side. This unit is equipped with an automatic pump down operation which Make sure no external pressure is applied to the terminal will collect all refrigerant from the field piping and indoor unit in the connectors.
Specifications of standard wiring components When cables are routed from the unit, a protection sleeve for the conduits (PG-insertions) can be inserted at the knock-out hole. (See figure 3) ERHQ011~016AAV3 Minimum circuit amps (MCA) 28.2 Wire Recommended field fuse 32 A Bush Wire type H05VV-U3G...
ISPOSAL REQUIREMENTS OTES Dismantling of the unit, treatment of the refrigerant, of oil and of other parts must be done in accordance with relevant local and national legislation. ERHQ011~016AAV3 Installation manual Outdoor unit for air to water heat pump 4PW37976-1D...
IRING DIAGRAM : Wire clamp : Black : Red : Terminal strip : Green : White : Connector : Brown : Yellow : Relay connector : Blue : Field wiring : Orange This wiring diagram only applies to the outdoor unit NOTE 1 Refer to the option manual for connecting wiring to X6A NOTE 4...
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