Friedrich 920-075-13 (1-11) Notice, Indoor Return Air Grille Installation, Ductwork, Notes

FIGURE 11

DRAIN CONNECTION

AND LOCATION

NOTICE

1)THE UNIT BASEPAN HAS THREE (3) PROVISIONS (LEFT, RIGHT, AND REAR) FOR CONNECTING AN EXTERNAL CONDENSATE DRAIN.

2)THE SUPPLIED DRAIN KIT MUST BE CONNECTED TO ONE OF THE THREE (LEFT, RIGHT, OR REAR) ¾” FPT CONNECTIONS ON THE UNIT BASEPAN. USE OF REAR FITTING WITHOUT CONNECTION TO DWV SYSTEM (DRAIN, WASTE, VENT) MAY RESULT IN STAINING OF THE OUTSIDE WALL.

3)INSERT THE PROVIDED ¾” NIPPLE INTO THE DETERMINED CONNECTION USING FIELD SUPPLIED TEFLON TAPE OR PIPE JOINT COMPOUND.

4)WITH THE THREADED END OF THE SUPPLIED ¾” UNION, CONNECT TO THE NIPPLE WITH TEFLON TAPE OR PIPE JOINT COMPOUND.

5)HAND-TIGHTEN ALL FITTINGS TO PREVENT DAMAGE TO UNIT OR FITTINGS.

6)A FIELD SUPPLIED DRAIN SYSTEM MUST NOW BE INSTALLED TO THE SLIP END OF THE UNION. A TRAP IS RECOMMENDED AND DRAIN CONNECTIONS SHOULD BE CONNECTED TO BUILDING DWV SYSTEM.

7)PITCH THE DRAIN LINE ON A ¼” DOWNWARD SLOPE FOR EVERY FOOT (1’) OF LATERAL HORIZONTAL RUN TO THE DWV.

8)THE REMAINING TWO CONNECTIONS MUST BE PLUGGED USING THE TWO ¾” PIPE PLUGS (PROVIDED) AND FIELD SUPPLIED TEFLON TAPE OR PIPE JOIN COMPOUND. HAND-TIGHTEN TO PREVENT DAMAGE TO UNIT OR FITTINGS.

9)DO NOT THREAD METAL OR COPPER PIPE FITTINGS DIRECTLY INTO UNIT.

10)CHECK SYSTEM FOR LEAKS.

11)FAILURE TO FOLLOW THESE PROCEDURES MAY RESULT IN SERIOUS PROPERTY DAMAGE.

12)A FIELD SUPPLIED SECONDARY CONDENSATE PAN MAY BE REQUIRED. CHECK WITH LOCAL CODES.

INDOOR RETURN AIR GRILLE INSTALLATION

THERE ARE TWO INDOOR RETURN AIR GRILLE OPTIONS AS SHOWN IN FIGURE 12. CHOOSE THE OPTION THAT BEST SUITS YOUR NEEDS. USE THE INSTALLATION INSTRUCTIONS PROVIDED WITH ACCESSORIES FOR INSTALLATION DETAILS.

FIGURE 12

RETURN AIR GRILLE OPTIONS

NOTE: ALL VERT-I-PAK CHASSIS ARE SHIPPED WITH A 20” X 14” FILTER INSTALLED. IF AN ACCESSORY FILTER HOLDER IS TO BE USED, YOU MUST REMOVE THE FACTORY SHIPPED FILTER FROM THE CHASSIS. DO NOT USE TWO FILTERS.

OPTION 1

VPRG4RETURN AIR GRILLE

WITH ACCESS PANEL

A FIELD-SUPPLIED (25” X 20”) FILTER IS

MOUNTED INSIDE THE HINGED ACCESS

DOOR.

KIT CONTAINS HINGE BRACKET FOR

MOUNTING THE DOOR WITH THE RETURN

AIR OPENINGS HIGH OR LOW ON THE

DOOR FOR OPTIMAL SOUND ATTENUA-

TION.

IT IS RECOMMENDED TO INSTALL THE

DOOR WITH THE HINGE ON THE RIGHT

SIDE AND THE RETURN AIR OPENINGS

HIGH ON THE DOOR.

OPTION 2

FIELD SUPPLIED

RETURN AIR GRILLE

MUST HAVE A MINIMUM OF 250

SQUARE INCHES OF FREE AREA.

NOTES:

THERE ARE THE FRIEDRICH RECOMMENDED RETURN AIR GRILLE/FILTER/ACCESS PANEL ARRANGEMENTS. CONSULT FRIEDRICH ON OTHER ARRANGEMENTS. IMPROPER RETURN AIR ARRANGEMENTS WILL CAUSE PERFORMANCE PROBLEMS.

RETURN AIR ARRANGEMENTS ARE SHOWN FROM THE FRONT, BUT CAN ALSO BE INSTALLED FROM THE RIGHT OR LEFT SIDE OF THE UNIT.

DUCTWORK

THE SUPPLY DUCT SYSTEM SHOULD BE DESIGNED VIA A RECOGNIZED METHOD SUCH AS THE EQUAL FRICTION METHOD, OR VELOCITY REDUCTION METHOD, USING THE APPROPRIATE DUCT CALCULATOR(S) FOR THE TYPE(S) OF DUCT (I.E. METAL DUCT, DUCT BOARD, OR FLEX DUCT) BEING USED IN THE SYSTEM. THE DUCT SYSTEM SHOULD BE DESIGNED FOR A MAXIMUM FRICTION RATE OF .30" WATER COLUMN TAKING INTO CONSIDE- RATION ALL FITTINGS, REGISTERS AND/OR DIFFUSERS. DO NOT operate unit without a supply duct attached.

THE RETURN AIR TO VERT-I-PAK "A" SERIES UNITS MUST NOT BE DUCTED, AND ALL UNITS MUST HAVE A FREE RETURN AIR CONFIGURATION TO PERFORM PROPERLY.

10