Instruction/ maintenance manual of the product 50HQP072-120 Carrier
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Manufacturer reserves the right to disco ntinue, or change at any time, specifications or de signs without notice and without inc urring obligations. Catalog No . 04-53 500077-01 Printed in U .S .A. Form 50HQP-C1SI Pg 1 11-10 Replaces: Ne w Installation, Star t-Up , and Ser vice Instructions CONTENTS Page SAFETY CONSIDERA T IONS .
2 accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing. Follow all safety codes. W e ar safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available.
3 especially important in areas where painting, plastering, or spraying of fireproof material, et c. is not yet complete. Foreign material that is allowed to accumulate within the units can pre- vent proper start-up and necessita te costly clean-up operations.
4 a50-8531 Fig. 1 — Unit Dimensions HANGER BRACKET DIMEN S ION S 221cm 2.54cm PLAN VIEW TOP 10. 8 cm 8 6.6cm FRONT CONTROL BOX U T S V 3 . 3 cm conden sa te LEFT RETURN LEFT VIEW - AIR COIL S IDE LE.
5 Step 3 — Locate Unit — The following guidelines should be considered when choosing a location for a WSHP: • Units are for indoor use only . • Locate in areas where ambient temperatures are between 4.4 C and 37.8 C and relative humidity is no greater than 75%.
6 EX I S TI N G DU C T S YS T E M — If the unit is connected to existing ductwork, consider the following: • V erify that the ex isting duct s have th e proper capacity to handle the unit airflow . If the ductwork i s too small, larger ductwork should be installed.
7 7. Mount motor , motor sheave, blower sheave and belt. Make sure wire s are not pi nched and not over sharp edg- es. Adjust motor downward to tighten belt. Raise or lower motor slide assembly with adjusting bolt and retighten the 2 slide nuts. Check for correct tension.
8 • All plastic to metal thread ed fittings should be av oided due to the potential to leak. Use a flange fitted s ubstitute. • T eflon tape thread sealan t is recommended to minim ize internal fouling of the heat exchanger . • Use backup wrench.
9 Determine percent voltage imbalance. = 0.95% This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electri- cal components.
10 Table 2 — Water Quality Guideline s LEGEND *Heat exchanger materials considered are copper , cupronick el, 304 SS (stainless steel), 316 SS, titanium. †Closed recirculating system is identified by a closed pressurized piping system. **Recirculating open wells should observe the open recirculating design considerations.
11 BC — Blower Contactor CB — Circuit Breaker CC — Compressor Contactor CO — Sensor , Condensate Overflow DPP — D u a l Po i n t Po w e r FP1 — Sensor , Water Coil F reeze Protection FP2 .
12 Fig. 13 — 50HQP 072-120 Units — T ypical Control Wiring with Deluxe D Control See legend and notes on page 11. Deluxe D1 Deluxe D Deluxe D2 Deluxe D Deluxe D2 Deluxe D1.
13 Y W O G R C AL1 AL2 A CR CMP1 FA N PWR HS1/EXH/RVS PREMIER LINK CR COMPLETE C CONTROL J4 J6 J5 J8 J1 PWR S P S A L W CMPSAFE T T T Y1 G R C AL1 CMP1 FA N PWR PREMIER LINK DELUXE D CONTROL J4 J8 J1 PWR CMPSAFE HS2 HS1 CMP2 Y2 W1 O/W2 J6 J5 S P T S A T L W T Fig.
14 Table 3A — Electrica l Data — 50HQP072 -120 Standard Units Table 3B — Electrica l Data — 50HQP072 -120 Dual Point Power Uni ts LEGEND *Time-dela y fuse or HACR circuit break er . Table 4 — Low Voltage VA Ratings * Standard transf ormer is 75 V A.
15 Step 10 — Install Field Contr ol Wiring TH E R M OS T A T C O N N EC T I O N S — The thermostat should be wired directly to the Aquazone™ control board. See Fig. 18 and 19. The thermostat should be located on an interior wall in a larger room, away from supply duct drafts.
16 PRE-ST ART -UP System Chec kout — When the installation is complete, follow the system checkout procedure outlined below before starting up the system. Be sure: 1. V oltage is within the utilizati on range specifications of the unit compressor and fan moto r and voltage is balanced for 3-phase units.
17 Table 5 — Blower Dat a — 50HQP072 LEGEND NOTES: 1. A = Standard Rpm/ Standard Motor , B = Low Rpm/ Standard Motor , C = High Rpm/Standard Motor . 2. Unit f actory shipped with standard static shea ve an d drive at 2 .5 turns open. Other speed require field selection.
18 Table 6 — Blower Dat a — 50HQP096 LEGEND NOTES: 1. A = Standard Rpm/ Standard Motor , B = Lo w Rpm/Standard Moto r , C = High Rpm/Standard Motor . 2. Unit f actory shipped with standard static shea ve an d drive at 2 .5 turns open. Other speed require f ield selection.
19 Table 7 — Blower Dat a — 50HQP120 LEGEND NOTES: 1. A = Standard Rpm/ Standard Motor , B = Low Rpm/ Standard Motor , C = High Rpm/Standard Motor . 2. Unit f actory shipped with standard static shea ve an d drive at 2 .5 turns open. Other speed require field selection.
20 Table 7 — Blower Data — 50HQP120 (cont) LEGEND NOTES: 1. A = Standard Rpm/ Standard Motor , B = Lo w Rpm/Standard Moto r , C = High Rpm/Standard Motor . 2. Unit f actory shipped with standard static shea ve an d drive at 2 .5 turns open. Other speed require f ield selection.
21 AIR COIL FREEZE PROTECTION (FP2) LI MIT SET - TI N G — Select jumper 2 (JW2-FP2 Low T emp) to choose FP2 limit of –12.2 C or –1.1 C. T o select –1.1 C as the limit, DO NOT clip the jumper . T o select –12.2 C as the limit, clip the jumper .
22 ME C H AN I C A L N I G HT S E T BA C K — When NSB input is connected to ground C, all thermostat inputs are ignored. A thermostat set back heating call will then be connected to the OVR input. If OVR input becomes active, then the Deluxe D control will enter Night Low Limit (NLL) staged heating mode.
23 4. Check the temperature of both supply and discharge water . 5. Air temperature drop across the coil should be checked when compressor is operating. Air temperature drop should be between –9.4 and –3.9 C. Unit Start-Up in Heating Mode NOTE: Operate the unit in heating cycle after checking the cooling cycle.
24 or before access to all conne ctions is limited. T est pressure may not exceed the maximum allowable pressure for the unit and all components within the water system.
25 immediately once the demand is removed. The control re - verts to Heating Stage 1 mode. If there is a master/slave or dual compressor application, all compressor relays and re- lated functions will op erate pe r their associated DIP switch 2 setting on S1.
26 Table 15 — Complete C Contr ol LED Code and Fault Descriptions LEGEND Table 16 — Aquazone™ Deluxe D Control Current LED Status and Alar m Relay Operations LEGEND NO TES: 1. If there is no f ault in memory , the F ault LED will flash co de 1. 2.
27 Filter s — Filters must be clean for maximum perfor mance. Inspect filters every month unde r normal operating conditions. replace when n ecessary . W ashable, high efficiency , electrostatic filters, when dirty , can exhibit a very high pressure drop for the fan motor and re- duce air flow , resulting in poor performance.
28 For average scale deposit, allow solution to remain in con- denser overnight. For heavy scale deposit, allow 24 hours. Drain condenser and flush with clean water .
29 NOTE: There should be a 3 to 6 mm gap between the mating part hub and the bushing flange. If the gap is closed, the bushing is probably the wrong size. 3. W ith taper-lock bushed hubs , be su re the bushing bolts are tightened evenly to prevent side-to-side pulley wob- ble.
30 TROUBLESHOO TING When troubleshooting problems with a WSHP , see T able 18. Thermistor — A thermistor may be required for single- phase units where starting the unit is a problem due to low voltage.
31 Table 18 — Troubleshooting LEGEND F A UL T HEA TING COOLING POSSIBLE CAUSE SOLUTION Main Power Problems X X Green Stat us LED Off Check line voltage circ uit breaker and dis connect. Check for line v oltage bet ween L1 and L2 on th e contacto r .
32 Table 18 — Troubleshooting ( cont) LEGEND F A UL T HEA TING COOLING POSSIBLE CAUSE SOLUTION Only Compressor Runs X X T hermo stat wir ing Check G wir ing at heat pump. Jumper G and R for f an operation. Check Y and W wiring at hea t pump. J umper Y and R for compressor operatio n in T est mode.
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Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No .
CL-1 ST A RT -UP CHECKLIST CUSTOMER: ___________________________ JOB NAME: _ _____________________________________ _ MODEL NO.:___________________________ SERIAL NO.
Manufacturer reserves the right to disco ntinue, or change at any time, specificatio ns or designs without notice and without inc urring obligations. Catalog No .
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If you have not bought Carrier 50HQP072-120 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Carrier 50HQP072-120 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 50HQP072-120 you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 50HQP072-120 will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 50HQP072-120, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 50HQP072-120.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 50HQP072-120. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 50HQP072-120 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
