Daikin MPS030 F - Optional Electric Heat; Electric Heater Design

oPTIonal eleCTrIC heaT
Electric Heater Design
If the 8th digit in the model number is an “E”, the rooftop
unit was furnished with a factory installed electric furnace
(Example, MPS035FE). The Maverick commercial rooftop
units are available with low, medium, or high heat output (see
capacities in Table 22). This packaged electric heat rooftop unit
is designed for outdoor non-residential installations only.
The electric heat design consists of a heating coil, DDC staging
control, and all operational safeties. The safety switches
include high-limit temperature switches and individual coil
fusing.
The high limit switch is an automatic reset switch. It opens the
control circuit and shuts the heater down when the temperature
reaches 160°F. The high limit switch closes again allows the
heater to run when the temperature gets to 130°F. There is a
second level of protection with an auxiliary high limit switch.
This switch opens up and shuts the heater down when the
temperature reaches 250°F. The auxiliary switch automatically
resets again at 220°F. The third level of protection is the
secondary auxiliary high limit switch which shut the heater down
at 285°F. This switch requires a manual reset.
Figure 31: Electric Heat Section
Electric Heating Capacity Data
Table 22: MPS 015 – 050 Electric Heating Capacities
Tons
Nom
cfm
Stages
Low Medium High
kW Min cfm MBh Delta T* kW Min cfm MBh Delta T* kW Min cfm MBh Delta T*
15 6000 4 18 950 61 9.5 36 1900 123 19.0 72 3800 246 38.0
17 6800 4 18 950 61 8.4 36 1900 123 16.7 72 3800 246 33.5
20 8000 4 36 1900 123 14.2 72 3800 246 28.5 90 4740 307 35.5
26 10,000 4 54 2900 184 16.9 72 3800 246 25.5 90 4800 307 31.4
30 12,000 4 54 2900 184 14.2 72 3800 246 19.0 90 4800 307 23.7
35 14,000 4 54 2900 184 12.2 72 3800 246 16.3 90 4800 307 20.3
40 16,000 4 72 3800 246 14.2 90 4800 307 17.8 108 5700 369 21.3
50 20,000 4 72 3800 246 11.4 90 4800 307 14.2 108 5700 369 17.1
* Temperature rise is calculated at nominal cfm
Electric Heater Data
Table 23: MPS 015 – 050 Electric Heater Data (Maximum
Temp. 60°F)
kW Voltage Amps kW Voltage Amps
18
208 50
72
208 200
230 45 230 181
460 23 460 90
575 18 575 72
36
208 100
90
208 250
230 90 230 226
460 45 460 113
575 36 575 90
54
208 150
108
460 136
230 136 575 108
460 68
575 54
IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS 38 www.DaikinApplied.com
oPTIonal eleCTrIC heaT