Instruction/ maintenance manual of the product 38HDR018-060 Carrier
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Manufa cturer res erves the right to discon tinue, or chang e at any time , specificat ions or designs witho ut notic e and wit hout inc urring obligati ons.
2 (FIELD PROVIDED AND INST ALLED) Fig. 2 — 38HDF ,HDR Unit Dimensions NOTE: Dimensions shown in feet-inches. Dimensions in ( ) are m illimeters. UNIT MODELS CHASSIS SIZE (Referen ce) ABC D E FG H J .
3 Step 2 — Rig and Mount Unit MOUNTING ON GROUND — M ount unit on a solid, level concrete pad. Position unit so water or ice from roof does not fall directly ont o unit. Acce ssory stacking ki ts can be used when units are to be stac ked. See i nstallati on instruct ions provided with the accessory kit.
4 Only use factory specified liquid-line filter driers with rated working pressures less than 600 psig. NOTE: Do not install a suction-line filter dri er in liquid line. MAKE PIPING SWEA T CONNECTIONS — Remove plasti c caps from liquid a nd suction servi ce valves.
5 Table 1B — 38HDR 018-060 P hysical D ata LEGEND *Unit shipped with full factory charge. See ARI (Air Conditioning and Refrigeration Institute) capacity tab le for proper charge and piston for each f an coil type. †V alve connection size is 7 / 8 inch.
6 Step 4 — Make Electrical Connections CO N TR O L CI R C UI T W IR I N G — Control voltage i s 24 v (40 va minimum). See Fig. 5 and unit label diagram for fi eld- supplied wiring details. Route control wire through opening in unit side panel to connection in unit control box.
7 Table 2 — 38HDF Electric al Data LEGEND *P er missible limits of the v oltage range at which unit will operate satisf actorily . NO TES: 1. Control circuit is 24 v on all units and requires an exter nal power source. 2. All m otors and compres sors contain inter nal overload protection.
8 Table 3 — 38HDR E lectrical Data LEGEND *P er missible limits of the v oltage range at which unit will operate satisf actorily . NO TES: 1. Control circuit is 24 v on all units and requires an exter nal power source. 2. All m otors and compress ors contain inter nal overload protection.
9 LEGEND NO TES : 1. Com pressor and fan motors are t hermally protected. 2. W ire in accordance with National Electrical Code (NEC) and local codes . Replace any original wires with 90° C wire or its equiv alent. 3. Us e minimum 60° C wire f or field power wiring.
10 LEGEND NO TES: 1. Compr essor and f an motors are thermally protected. 2. W ire in accordance with National Electric al Code (NEC) and local co des. Replace any original wires with 90° C wire or its equi valent. 3. The CLO locks out the COMP to prev ent shor t cycling on COMP overloads and safet y devi ces.
11 ST AR T -UP Preliminary Chec ks 1. Check that all internal wiring connections are tight and that all barri ers, covers, and panels ar e in place. 2. Field electrical power source must agree with unit name - plate rating. 3. All service val ves must be open.
12 T o troubleshoot: 1. Apply voltmeter acros s crankcase heat er leads to see if heater voltage i s on. Do not touch heater . Carefully feel area around crankcas e heater; if warm, c rankcase heater is functioning. 2. W ith power off and heater leads disconne cted, check across leads with ohmmet er .
13 Table 4 — Pres sure vs. Tempera ture Cha rt — Pu ron® Refrig erant ( R-410A) Subcooling Met hod — For 38HDR units only , the sub- cooling method is used to check and adjust charge during the cooling season. Refer to T able 5 and the fol lowing procedure: NOTE: For use with residential fan coils and the 40QA060 under ceiling unit only .
14 Table 5 — Subcooling Charging Table Compressor Lock out Switch — The 38HDR units are provided with a compressor lockout protective device. If the compressor shuts down due to any safety device, a current loop monitoring the compressor current senses no c urrent flow .
15 Fig. 9 — T rouble shooting the Cooling Cycle.
Manufa cturer reser ves the right to discon tinue, or change at any time, specificat ions or designs w ithout not ice and without incurrin g obligations.
An important point after buying a device Carrier 38HDR018-060 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Carrier 38HDR018-060 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 38HDR018-060 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 38HDR018-060 you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 38HDR018-060 will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 38HDR018-060, 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 38HDR018-060.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 38HDR018-060. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 38HDR018-060 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
