VersaPro™
Packaged Heat Kit
Installation Manual
MODELS:
Read this manual carefully before installation and keep it where
the operator can easily nd it for future reference.
Due to updates and constantly improving performance, the
information and instructions within this manual are subject to
change without notice.
Version Date: 03/22/24
Please visit www.mrcool.com/documentation
to ensure you have the latest version of this manual.
• MHK05PB
• MHK07PB
• MHK10PB
• MHK15PB
• MHK20PB
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Contents
Safety Precautions
WARNING
• These instructions are intended as an aid to qualied licensed service personnel for proper
installation adjustment and operation of this unit.
• Read these instructions thoroughly before attempting installation or operation.
• Failure to follow these instructions may result in improper installation, adjustment, service, or
maintenance possibly resulting in re, electrical shock, property damage, personal injury, or death.
• Please read carefully and keep in a safe place for future reference by service personnel.
Recognize this symbol as an indication of important safety
information.
WARNING
CONTENTS
SAFETY PRECAUTIONS ......................................................................................... 1
PRE-INSTALLATION .............................................................................................. 7
2.1 Inspection ................................................................................................. 7
2.2 Compatibility ........................................................................................... 7
2.3 Clearances ................................................................................................. 7
2.4 Unit Components ..................................................................................... 8
INSTALLATION .................................................................................................... 14
SPECIFICATIONS ................................................................................................. 20
ELECTRICAL DIAGRAM ....................................................................................... 24
1
2
3
4
5
2.1 Inspection
As soon as unit is received, it should be inspected and noted for possible shipping damage during transportation.
It is carrier's responsibility to cover the cost of shipping damage. Manufacturer or distributor will not accept the
claims from dealer for any transportation damage.
NOTE
The equipment described in this instruction should be installed by trained and experienced service personnel.
A separate power supply line must be provided for use with optional electric heater. DO NOT try to connect
electric heater with unit to a single power supply line.
Pre-Installation
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Contents
2.2 Compatibility
Electric heaters should be installed only in designated packaged units. All electric heaters and their accessories
are designed for applications used for cooling with electric heaters and heat pumps with electric heaters. This
instruction covers the installation of the following electric heaters:
• MHK05PB
• MHK07PB
• MHK10PB
• MHK15PB
• MHK20PB
2.3 Clearances
Direction
Distance
(in.)
Direction
Distance
(in.)
Top
1
60 Right 12
Front 30 Left 12
Rear 18
2
Bottom
3
0
Duct Clearance: 1 inch clearance for all sides of air supply duct.
1. Units must be installed outdoors. Over-hanging structure or shrubs should not obscure condenser air discharge
outlet.
2. Units may be installed on combustible oors made from wood or class A, B, or C roof covering materials.
Figure 2.3- Clearances
Table 2.3- Unit Clearance
NOTE
The electric heat accessory should be installed before the supply air duct is attached to the supply air opening
anges.
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SAFETY
1
2.4 Unit Components
Figure 2.4 - Component Locations
*The above gure is for reference purposes only.
Installation
Install the electric heat kit as follows:
1. Disconnect all electric power to the unit.
2. Unscrew all screws around the panel. Remove the panel of the unit. (See Figs. 3.1 & 3.2.)
Figure 3.1 Figure 3.2
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4
INSTALLATION
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3. Remove electric heat kit wiring panel by removing two screws. (See Figures 3.3 & 3.4.)
Figure 3.4
Figure 3.3
4. From blower plenum, remove two screws (four screws for MHK10PB, MHK15PB, MHK20PB) and cover plate
that you can discard after heater is installed. (See Figures 3.5 & 3.6)
Figure 3.5 (For MHK05PB, MHK07PB, MHK10PB) Figure 3.6 (For MHK15PB, MHK20PB)
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SAFETY
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5. Slide electric heater into the slot. Ensure heater support rod is placed into the hole of blower component. (See
Figure 3.7.)
6. Carefully align the plate of electric heat kit with the holes of the blower plenum. Use the screws removed in
step 4 and accessory pouch, then tighten the screws to hold the electric heat kit to the plenum. (See Figures
3.8 & 3.9.)
Figure 3.7
Figure 3.8
Figure 3.9
Place heater rod into the hole of the blower
compartment
7. Tighten wires with clips in the bar, and bundle loose wires with fastening belt. (See Figures 3.10 & 3.11.)
Clip
Figure 3.10 Figure 3.11
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INSTALLATION
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8. Use the screws from Step 3 to reinstall wiring panel. (See Figure 3.12.)
Figure 3.12
9. Secure the electric heat kit electric control installation board with the four screws provided. (See
Figures 3.13 & 3.14.)
Figure 3.13
(For 24/30/36K)
Figure 3.14
(For 42/48/60K)
10. High Voltage Supply for heater kit must be routed through a separate H.V. Knockout. See Figure 3.1 for location.
11. Carefully inspect all wire connections and secure any loose wiring.
12. Remount the panel.
13. Restore all power supply.
WARNING
• After reconnecting all wires, check all screws of the breaker and ensure all screws are properly
tightened.
• Failure to do so will result in breaker malfunction, re, death, personal injury, or property damage.
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SAFETY
1
Size
(Tons)
Volt
Compressors (Each)
OD
Fan
Motors
(each)
Supply
Blower
Motor
Unit Circuit Heater Circuit
RLA LRA MCC FLA FLA MCA
Max
Fuse/
Breaker
Size
Model kW Stages Amps MCA MOP
24
(2.0)
208/230-
1-60
8.45A 34.8A 14.87A 0.68A 2.46A 13.7 20
MHK05PB 3.8/5 1 18.1/20.8 23/26 25/30
MHK07PB 5.6/7.5 1 27.1/31.3 34/39 35/40
MHK10PB 7.5/10 1 36.1/41.7 45/52 45/60
30
(2.5)
208/230-
1-60
12.0A 59.93A 21.7A 1.0A 4.1A 20.1 30
MHK05PB 3.8/5 1 18.1/20.8 23/26 25/30
MHK07PB 5.6/7.5 1 27.1/31.3 34/39 35/40
MHK10PB 7.5/10 1 36.1/41.7 45/52 45/60
MHK15PB 11.3/15 2 54.2/62.5 68/78 70/80
36
(3.0)
208/230-
1-60
13.0A 75A 22.9A 1.0A 4.1A 21.4 30
MHK05PB 3.8/5 1 18.1/20.8 23/26 25/30
MHK07PB 5.6/7.5 1 27.1/31.3 34/39 35/40
MHK10PB 7.5/10 1 36.1/41.7 45/52 45/60
MHK15PB 11.3/15 2 54.2/62.5 68/78 70/80
42
(3.5)
208/230-
1-60
15.2A 112.3A 24.8A 1.67A 2.8A 23.5 30
MHK05PB 3.8/5 1 18.1/20.8 23/26 25/30
MHK07PB 5.6/7.5 1 27.1/31.3 34/39 35/40
MHK10PB 7.5/10 1 36.1/41.7 45/52 45/60
MHK15PB 11.3/15 2 54.2/62.5 68/78 70/80
MHK20PB 15/20 2 72.2/83.3 90/104 90/110
48
(4.0)
208/230-
1-60
17.3A 108A 28.5A 1.67A 3.6A 26.9 40
MHK05PB 3.8/5 1 18.1/20.8 23/26 25/30
MHK07PB 5.6/7.5 1 27.1/31.3 34/39 35/40
MHK10PB 7.5/10 1 36.1/41.7 45/52 45/60
MHK15PB 11.3/15 2 54.2/62.5 68/78 70/80
MHK20PB 15/20 2 72.2/83.3 90/104 90/110
60
(5.0)
208/230-
1-60
21.5A 125A 34.3A 1.67A 6.0A 34.6 50
MHK05PB 3.8/5 1 18.1/20.8 23/26 25/30
MHK07PB 5.6/7.5 1 27.1/31.3 34/39 35/40
MHK10PB 7.5/10 1 36.1/41.7 45/52 45/60
MHK15PB 11.3/15 2 54.2/62.5 68/78 70/80
MHK20PB 15/20 2 72.2/83.3 90/104 90/110
Specications
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INSTALLATION
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Electrical Diagram
VersaPro™
Packaged Heat Kit
Installation Manual
The design and specications of this product and/or manual are subject to change without prior notice.
Consult with the sales agency or manufacturer for details.
