SYSTEM REQUIREMENTS
Allow sufficient space for airflow and service of the unit. See Table 5 and Figure 5 for the required minimum distances between the unit, walls or ceilings.
Table 3—Performance and Specifications
PIPING REQUIREMENTS
IMPORTANT: Both refrigerant lines must be insulated separately.
The minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m). The following lengths are allowed.
Table 3 lists the pipe sizes for the outdoor unit. For the indoor unit pipe sizes refer to the indoor unit installation instructions
Additional Refrigerant Calculation : Sum Total Liquid Pipe ft. (m) - Additional Charge Required After ft. (m.) x Additional Charge oz./ft. (g/m) 0.16 (15)
NOTES: If the calculation results in a negative number no refrigerant is required to be added or removed. Electronic expansion valves in the outdoor unit
are used as metering devices
NOTE:
T
he refrigerant charge included is adequate for the outdoor unit’s maximum number of zones multiplied by the standard piping length per
zone. For piping runs greater than the “Maximum Piping Length with no additional refrigerant charge per System”, see Additional Refrigerant Charge (see
Table 3).
Refrigerant Piping: Line sets to be sized based on the connection size of the indoor unit. Each pipe should be insulated individually.
5
Outdoor Condensing Unit Model DHMZ218DA DHMZ327DA DHMZ436DA
Power supply V/ph/Hz 208-230/ 1/60 208-230/ 1/60 208-230/ 1/60
Cooling
Capacity Btu/h 19000 28000 36000
EER 12.5 13 13.5
SEER 21.5 22 21.5
Heating at 47°F
Capacity Btu/h 20000 28000 36000
COP 3.4 3.5 3.8
HSPF4 9.8 10.4 10.5
HSPF5 8.5 9 8.5
Heating at 17°F Rated capacity Btu/h 15200 22400 30100
Heating at -5°F Maximum capacity Btu/h 14200 20600 27500
MINIMUM CIRCUIT AMPACITY A 25.0 30.0 35.0
MAX TIME DELAY FUUSE OR HARC BREAKER A 35.0 45.0 50.0
m3/h 3619 3619 7646
cfm 2130 2130 4500
Outdoor noise level dB(A) 63.4 62.3 64
Outdoor unit
Dimension (W
x
D
x
H) inch 36
x
14
x
27
40
x
16
x
31
41
x
15
x
52
Dimension (W
x
D
x
H) mm 935
x
360
x
701 1034
x
410 x 810 1045
x
389
x
1333
Packing (W
x
D
x
H) inch 42
x
19
x
34
42
x
19
x
34
43
x
19
x
58
Packing (W
x
D
x
H) mm 1090
x
500
x
875 1090
x
500
x
875 1095
x
495
x
1480
Net/Gross weight lbs. 149.91/160.94 156.53/167.55 223.77/255.07
Net/Gross weight kg 68/73 71/76 101.5/115.7
oz 98.8 105.8 162.3
Refrigerant precharge (Total pipe length) ft 49 74 98
Additional charge for each ft oz 0.161 for 1/4 in. liquid pipe
0.322 for 3/8 in. liquid pipe
0.161 for 1/4 in. liquid pipe
0.322 for 3/8 in. liquid pipe
0.161 for 1/4 in. liquid pipe
0.322 for 3/8 in. liquid pipe
Design pressure psig 550/340 550/340 550/340
Refrigerant piping
Condensing Unit Connection
Sizes Liquid/Gas side.
Refrigerant line sizes based
on selscted indoor air handler.
Refer to indoor air handler
IOM for proper lone set sizing.
Condensing unit is equiped
with the necessary adapters to
match required tubing sizes.
inch
mm
(2) Ø6.35 liquid lines
(2) Ø9.52 gas lines
(3) Ø6.35 liquid lines
(3) Ø9.52 gas lines
(4) Ø6.35 liquid lines
(3) Ø9.52 gas lines
(1) Ø12.7 gas line
Max. length for all rooms ft 131 197 262
m 40 60 80
Max. length for one indoor unit ft 82 98 115
m 25 30 35
indoor and outdoor unit
ft 49 49 49
m 15 15 15
indoor units
ft 33 33 33
m 10 10 10
Operating Range
Ambient
Temperature
Cooling °F -22~122 -22~122 -22~122
°C -30~50 -30~50 -30~50
Heating °F -22~86 -22~86 -22~86
°C -30~30 -30~30 -30~30
(2) 1/4 liquid lines
(2) 3/8 gas lines
(3) 1/4 liquid lines
(3) 3/8 gas lines
(4) 1/4 liquid lines
(3)3) 3/8 gas lines
(1) 1/2 gas line
615000259 REV C, [10/01/2021]
