How to Guide

ManualsBrandsMRCOOL ManualsAir Conditioners & FansDIY 27,000 BTU Ductless Heat Pump 2 Zone Wall Mounted 9,000+18,000 with 16FT Install Kit 230-Volt/60Hz

www.mrcool.com v03.06.2020

DIY

Multi-Zone

Do-It-Yourself Ductless Mini-Split Heat Pump A/C

Easy Do-It-Yourself installation

with our Quick Connect

line set

SMART CONTROLLER

Note: This guide is for convenience.

Please refer to the more detailed installation

instructions in the manual as needed.

Installing the MRCOOL DIY multi-zone does not require specialized tools

or training. It does require basic technical skills. You are assuming the risk

by handling materials containing refrigerants under pressure including

that if not handled properly, refrigerant can cause bodily injury. If you do

not feel comfortable conducting this installation process yourself, we

recommend you retain the services of a qualied HVAC professional.

Summary of content (6 pages)

PAGE 1
Easy Do-It-Yourself installation with our Quick Connect® line set Installing the MRCOOL DIY multi-zone does not require specialized tools or training. It does require basic technical skills. You are assuming the risk by handling materials containing refrigerants under pressure including that if not handled properly, refrigerant can cause bodily injury. If you do not feel comfortable conducting this installation process yourself, we recommend you retain the services of a qualified HVAC professional.
PAGE 2
STEP 1 - inside 1. Locate the wall template. 2. Place the template on the wall at the installation location. 3. Use the template to mark the drill points and wall hole site. 4. Remove the template. STEP 2 - inside STEP 3 - inside 1. Drill a 3.5 inch diameter hole through the wall, at a slightly downward angle, to accommodate the line set, condensate drain line and communication cable to the exterior condenser. Indoor Wall Outdoor 0.2 - 0.3in (5 - 7 mm) 1.
PAGE 3
STEP 3 - continued STEP 4 - continued 4. Snap the air handler onto the wall bracket. 2. Remove the plastic seals from the indoor handler refrigerant lines. 3. Carefully unroll the amount of Quick Connect® line set needed to connect the indoor handler ﬁttings and the outside condenser. Leave the coiled portion stored near the condenser. 4. Align the Quick Connect® refrigerant lines to the matching indoor handler ﬁttings. Tighten the ﬁrst few threads by hand. STEP 4 - outside 1.
PAGE 4
STEP 5 - outside STEP 6 - outside 1. Carefully roll the excess tubing and place it behind the condenser. 1. Remove the brass caps from the valves on the exterior condenser unit. 2. Attach the bundle connections to the outside condenser. 2. Use an allen wrench to open each connection valve counter clockwise until it stops turning. Be sure not to exert excessive force on the valve. You may hear a soft hissing sound as a slight amount of R-410a refrigerant exits the condenser.
PAGE 5
STEP 7 - outside 1. Remove the electrical cover. 2. Wires and terminals that are numbered should be matched and connected accordingly. WARNING BEFORE PERFORMING ANY ELECTRICAL WORK, TURN OFF ALL POWER TO THE SYSTEM. 4. Terminal L1(A) of the outdoor unit must connect with terminal 1 on the indoor unit. Continue to match zone to zone for any additional connections. 1. Wire colors of this series / model may diﬀer from previous models, other series and general conventions. 2.
PAGE 6
STEP 8 - continued 1. To protect Quick Connect® connections and reduce vibration, wrap them with the black sound deadening pads. Pack tightly before wrapping the connections with the white pipe insulation. Refer to the diagram on the previous page. 2. To further improve overall appearance and long term durability it is recommended to install using MRCOOL® LineGuard® (sold separately). DIY Multi-Zone ® Do-It-Yourself Ductless Mini-Split Heat Pump A/C STEP 9 - inside 1.