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Air Source Heat Pump Installation,

Maintenance and Service Manual

This booklet is to be carefully read and instructions followed for

efficient and trouble free operation of the

Rheem Thermal Hot Water Heat Pump

Rheem Manufacturing Company (Singapore) Pte Ltd

8 Pandan Crescent
#02-02 Singapore 128464
Tel : 68721161 / Fax : 68721151
Email :

[email protected]

Website : www.rheemasia.com

REV:

OCTOBER

2019

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Содержание RTHW105

Страница 1: ...y read and instructions followed for efficient and trouble free operation of the Rheem Thermal Hot Water Heat Pump Rheem Manufacturing Company Singapore Pte Ltd 8 Pandan Crescent 02 02 Singapore 128464 Tel 68721161 Fax 68721151 Email rheem rheemasia com Website www rheemasia com REV OCTOBER 2019 ...

Страница 2: ...uidelines 4 1 2 Plumbing 5 1 3 Electrical 7 1 4 Control Design 7 SECTION 2 COMMISSIONING 9 SECTION 3 OPERATION 10 3 1 Thermostat Model Carel PJEZ Controller 10 3 2 Rheem IQTM Model Intelligent Controller 10 3 3 De Icing 11 SECTION 4 MAINTENANCE 11 SECTION 5 TROUBLESHOOTING 12 5 1 Thermostat Model 12 5 2 Rheem IQTM Model 13 SECTION 6 INSTALLATION SCHEMATIC DRAWING 14 SECTION 7 WARRANTY 14 The End ...

Страница 3: ...ient operating conditions water flow water temperature and also due to the wide diversity of commercial and industrial applications selection of the unit should be done in conjunction with an experienced heat pump dealer or the manufacturer In hot water application vessels and reticulation containing the heated water should all be suitably insulated to obtain the optimum performance from the syste...

Страница 4: ...e in the incoming air stream of the unit Service access is required at both ends of the heater Allow a minimum 850 mm service access at the compressor end if possible for units up to 80 kW For units 100 kW and above 1000 mm access at the compressor end is required Where multiple heat pumps are to be installed follow the required minimum clearance indicated in the heat pump catalogue The Heat Pump ...

Страница 5: ...ons for optimum flow rate Assistance will be provided in relation to optimum plumbing design and pump selection Water connections on the unit are clearly marked as water inlet and water outlet The water lines should be as short as conditions will permit The size of these lines is not necessarily the same as unit connections Breakable unions should be installed on both inlet and outlet pipes to fac...

Страница 6: ...y This heat pump should only be connected to a water supply which complies with these guidelines for the Rheem Thermal warranty to apply 1 2 2 Change of Water Supply The changing or alternating from one water supply to another e g a rain water supply bore water supply desalinated water supply public reticulated water supply or water bought in from another supply then water chemistry should be test...

Страница 7: ...t to AS3000 latest edition wiring standards Refer to the internal electrical wiring diagram supplied with the units before proceeding with electrical work Cable and fuse sizing must be correct relative to unit specified Volts Hz Phase An isolating switch must be fitted adjacent to the unit up to 80 kW units above 100 kW have a factory installed isolation switch To install the unit remove the elect...

Страница 8: ... the desired set point normally with a 2 K split and stop running when the EWT is a set point The heat pump will likewise not run without water flow so there is a very direct link between the heat pump hot water recirculating pump and thermostat controller The thermostat sensor can be located in the hot water tank with control wiring back to the water recirculating pump The operation of the recirc...

Страница 9: ...have unrestricted supply of fresh air to the coil and exhaust air removed from closed in areas c The unit should stand on a firm base with fall to take condensate or rain water away from the compressor compartment and to the unit s drainage at the plumbing end d Noise should be directed away from living areas e Water connected correctly as indicated f Condensate drain runs to waste g Unit is wired...

Страница 10: ...will be displayed push the up or down arrows to adjust the value Press set to confirm the value a Adjusting the differential or Hysteresis All parameters screen must be accessed b Press and hold Set for approx 5 seconds PS will be displayed c Press Set then Arrow up till the password value 22 is displayed PS will be displayed d Press Arrow up unit parameter rd is displayed e Press Set Value will b...

Страница 11: ...Leak test refrigerant system once every 6 months c Check pressure switches de ice control and solenoid valves d Check thermostat or Rheem IQTM controller e Check fan motor support and fan blades f Check condensate drain for blockages g Check water inlet and outlet connections for any leaks h Check current draw with and without load i Check operating voltage at compressor terminal with load without...

Страница 12: ... the ejected air temperature is colder than incoming air If so this means the unit is extracting heat from the air and transferring this to water Check that the evaporator and internal pipes sweating This is evidence of heat removal from the air suggesting that the heater is working Check inlet louvres outlet grill and condenser coil has satisfactory airflow and is not clogged Check that thermosta...

Страница 13: ...frigerant charge and HP LP operation Possible condenser water flow failure Check condenser pump water entering temperature and flow rate Motor windings faulty Contact manufacturer for replacement 5 1 4 Compressor Motor Hums But Will Not Start Possible Cause Possible Solution Low voltage Provide adequate voltage Wrong motor connections Check with name plate or wiring diagram Tight or seized compres...

Страница 14: ...___________________________ SECTION 7 WARRANTY Rheem Manufacturing Company Singapore Pte Ltd undertakes to provide twelve 12 months warranty for Rheem Thermal Heat Pumps only against manufacturing defects during the Defects and Liabilities Period DLP effective upon delivery date subject to be confirmed by your local Rheem distributor In keeping with its policy of continuous progress and product de...

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