Carrier 50YA- Manuals

Page 2 - Vertical Models; UNIT SIZE

Fig. 2—Base Unit Dimensions Horizontal Models UNIT SIZE A (IN.) B (IN.) C (IN.) 009,012 11-1/8 20 34 015,019 17 20 43 024,030 19 20 43 036 21 20 47 042-060 21 36-1/4 36-1/4 A B C Vertical Models UNIT SIZE A (IN.) B (IN.) C (IN.) 009,012 24-1/8 19-1/8 19-1/8 015,019 37-1/2 21-1/8 21/1/8 024,030 37-1/...

Page 3 - Step 3—Mounting the Unit; Fig. 3—Condensate Trap; ELAVATION LINE

Loosen the compressor mounting bolts to remove the 3 shippingblocks if equipped before installation. A periodic maintenance checklist is provided in the maintenancesection to outline recommended maintenance schedules. Do notsubstitute these checklist for the detailed information found in theappropri...

Page 4 - Fig. 6—Vertical Sound Attenuation; RETURN AIR LOUVER OR GRILLE

Normally it is required that the heat pump be installed in aprotected space inside the conditioned area. If the unit is installedin an unconditioned space, it is imperative that it be isolated andprotected so that its physical temperature is maintained at 60°F orabove. All water pipes that are subje...

Page 5 - Fig. 7—Line Power Connection; TERMINAL

All field-installed wiring—including the electrical ground—mustcomply with the NEC, as well as applicable local codes. Inaddition, all field wiring must conform to the Class II temperaturelimitations described in the NEC. Refer to Fig. 7 for a schematicof the field connections which must be made by ...

Page 7 - NOTE: All copper tubes and fittings

Before servicing unit, open unit disconnect switch to preventinjury or death due to electrical shock or contact with movingparts. a. Check the unit high and low voltage. It should be in accordance with the electrical specifications described onthe unit nameplate. b. Look for wiring errors; check for...

Page 8 - WATER SOURCE COMFORT SYSTEM OPERATION; COOLING MODE; Table 3—Operating Limits

WATER SOURCE COMFORT SYSTEM OPERATION COOLING MODE When the water source comfort system is operated in the coolingmode, the reversing valve directs the flow of the hot gas beingpumped by the compressor to the water-to-refrigerant heat ex-changer. The heat is removed by the cooler water, and the hot ...

Page 9 - Table 4—Cooling Operating Pressures (PSIG)

NORMAL OPERATING PRESSURES Normal operating pressures are the pressures that the unit shouldbe operating at when the water flow is adjusted to 3 gpm/ton.Under these conditions, the difference between entering andleaving water temperatures is about 10°F in cooling mode and 6°Fin heating mode. The dif...

Page 11 - MAINTENANCE

WATER TANK REFILL 1. Open the cold water supply to the tank. 2. Open a hot water faucet to vent air from the system until water flows from the faucet, then close. 3. Depress the hot water tank pressure relief valve handle to ensure there is no air remaining in the tank. 4. Slowly unscrew the shaft p...

Page 12 - TROBLESHOOTING; Thermostat In On Position, But Unit Does Not Operate

TROBLESHOOTING Thermostat In On Position, But Unit Does Not Operate SYMPTOM SECONDARY SYMPTOM CHECKS AND CORRECTIONS Contactor Closed Compressor Silent Check for faulty or incorrect wiring in the line voltage circuit, over-heated contacts, open compressor windings, or overloaded. Compressor HUMS the...

Page 14 - Other

Other SYMPTOM SECONDARY SYMPTOM CHECKS AND CORRECTIONS Water Drips From Unit Condensate Drain Check to see that the unit is pitched to allow for proper drainageand that the condensate piping is not restricted. Check for morethan 1 trap in the condensate drain line. Compressor Will Not Shut Off Check...

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User Manual Carrier 50YA

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Carrier Manuals