RPL: RAH, Size 077, Vintage C, RoofPak Draw Thru / Blow Thru Air ...
RPL: RAH, Size 077, Vintage C, RoofPak Draw Thru / Blow Thru Air ...
RPL: RAH, Size 077, Vintage C, RoofPak Draw Thru / Blow Thru Air ...
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Section A- Outdoor/Return <strong>Air</strong> Section<br />
Notes<br />
Primary Codes that pertain: 19, 20, 21, 22, 23<br />
Additional Codes that pertain: 06, 09, 12, 14, 15, 16, 17, 49<br />
➩<br />
Codes 19 and 20 determine the base section. Code 19 is the Return <strong>Air</strong> Plenum, and determines if the unit has<br />
back (a.k.a. horizontal) return air, bottom return air, or side return air. The plenum is required for any outdoor air<br />
application with an economizer (Code 20= BE, BY, DE, DY, EE, EY, FE, FY, GE, GY, HE, HY, JE or JY). The only<br />
case in which a plenum is not required is when a 100% outdoor air damper and hood are ordered (C20= AE, AY).<br />
Codes 21, 22, 23 determine the return air fan, motor and drives. These codes only pertain to units with a 0-100%<br />
economizer (C20= DE, DY, EE, EY, FE, FY, GE, GY, HE, HY, JE or JY). The fan section parts, the fans, and the<br />
motors are listed in this section. The drive components (fan sheave, motor sheave, belt, and fan bushing) are<br />
not listed as they are unique to the unit. If a drive component is required you may use the number from the<br />
part and cross reference it with the Drive Components Cross Reference form number: 571006, or contact<br />
Daikin McQuay Parts to ensure that the needed part(s) are correctly identified. The motors range anywhere<br />
from 5- 60 horsepower, and the fan wheel is 40”.<br />
Code 06 determines the panels used in final cabinet assembly (return air units only).<br />
Code 09, the voltage, is part of the motor part number identification.<br />
Code 12, the control system comes into play when an economizer is present. The economizer comes with an actuator<br />
motor on any MicroTech unit (C12= 1M, 2M, 3M, 4M, or 5M [original MicroTech] or L*, B*, E* or S* [MicroTech II or<br />
MicroTech III]), but may not have a motor if the unit has controls by others (C12= YC or YM).<br />
Code 14 determines if the return fan has an inverter, or variable frequency drive. If code 14 equals 1-9 (or X for units<br />
built prior to 2000) , then the unit has inverters, and cannot, therefore have wheels with variable inlet vanes (which<br />
haven’t been used on production units since 2003).<br />
Code 15, determines if Variable Inlet Vanes (VIV) are present (these haven’t been used on production units since<br />
2003). If code 15= 2 or 4, they are present on the return fan.<br />
Code 16 determines if a smoke detector is located in the return air cabinet. If C16= 1 or 3, a smoke detector (SD2)<br />
is present.<br />
Code 17 determines the Enthalpy Control. If C17= Y* and the unit has an economizer there is a mechanical enthalpy<br />
control (OAE). If C17= C*, there is a differential enthalpy control (OAE + RAE).<br />
Code 49 determines if the return air cabinet has a light, switch and receptacle (C49= B), fan belt guards (C49= D)<br />
or both (C49= F).<br />
<strong>RoofPak</strong> Singlezone; <strong>RAH</strong> <strong>077</strong> “C” Rev. Q 07/12 <strong>RPL</strong> 700008300 / Page 19