Hi-Velocity RBM-100 Manual de instalación - Página 9
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Duct Sizing
The Return Air is to be sized on a 0.15 static pressure (37 pa) as
compared to 0.10 static pressure (25 pa) for conventional forced
air systems. The maximum length for an individual return air duct
is fifty feet (15.24m).
Please note: It is VERY important NOT
to undersize the return air, as this will
create noise, increase motor power
consumption, reduce airflow and increase
the possibility of condensate carry-over.
Table 03 has recommended return air sizes for round and
rectangular ducts. A variance of
return ducts that connect to the RBM or Hi-Velocity Systems unit.
Important:
When connecting a round
Return Air to the RBM coil, a round to
rectangular transition is required.
Specifications
Matching Fan Coil
Part Number
Tons
(1)
Refrigerant Type
TX Cooling MBH
(2)
Latent Cooling MBH
Fin Material
Tubing Material
Type of Fins
Liquid Line (Lq)
Connection
Suction Line (S)
Sizes
Drain Connection
TXV with Built in Check Valve & Bypass
Access Ports
Freeze Stat
Shipping Weight
Module Size (L x W x H)
(1) Minimum of
Minimum of four HE outlets
four HE outlets per ton of cooling needed. (2" Duct = Minimum
per ton of cooling needed. (2" Duct = Minimum eight outlets
(2) Smaller condensers may be matched to the fan coil when needed (match TXV to condenser size)
www.hi-velocity.com
+20%
is allowable for sizing
RBM-50
HE-Z/HE-B/HE-50/51
HV-50/51/52
CU-51
LV-50
41090300050
1.5 - 2.0
(5.3 - 7.0 kW)
R-410A
18-24
(5.3-7.0 kW)
6.8-8.9
(2.0-2.6 kW)
Aluminum
Copper
.006 Al
(0.1524mm)
3/8
"
(9.5mm)
7/8
"
(22.3mm)
3/4
M CPVC
"
(19mm)
Pre-Installed
Yes
Yes
35 lbs
(15.9 kg)
" x 18
" x 18
1 ⁄2
1 ⁄4
14
(368mm x 464mm x 464mm)
eight outlets per ton)
Table 03 – Return Air Duct Sizes
Unit
50/51/52
70/71
100/101
Remember: When using flexible duct for return air, use
one duct size larger due to the higher friction loss.
Where allowed by local codes, a single return air grill may be
used. Note: Return air grill must have equal minimum of free air
area to return air.
Important: When using flexible duct for
return air, use one duct size larger due to
the higher friction loss.
RBM-70
HE-Z/HE-B/HE/HV-70/71
LV-70
41090300070
2.5 - 3.0
(8.8 - 10.6 kW)
R-410A
30-36
(8.8-10.6 kW)
11.7-13.7
(3.4-4.0 kW)
Aluminum
Copper
.006 Al
(0.1524mm)
3/8
"
(9.5mm)
7/8
"
(22.3mm)
3/4
M CPVC
"
(19mm)
Pre-Installed
Yes
Yes
45 lbs
(20.4 kg)
"
" x 18
" x 18
1 ⁄4
1 ⁄2
1 ⁄4
19
(495mm x 464mm x 464mm)
per ton)
MBH - Thousand British Thermal Units per Hour
TX - Thermal Expansion
TXV - Thermal Expansion Valve
-9-
-9-
Module RBM
RBM Refrigerant Base Module Installation
Min Sq.
Rigid Ø
Flex Ø
Inches
(Sq. cm)
12"
14"
(305mm)
(356mm)
14"
12"
(356mm)
(774cm)
(305mm)
14"
16"
(356mm)
(406mm)
(1084cm)
RBM-100
HE-Z/HE-P/HE-B/HE/HV-100/101
41090300100
3.5 - 5.0
(12.3 - 17.6 kW)
R-410A
42-60
(12.3-17.6 kW)
16.0-22.2
(4.7-6.5 kW)
Aluminum
Copper
.006 Al
(0.1524mm)
3/8
"
(9.5mm)
7/8
"
(22.3mm)
3/4
M CPVC
"
Pre-Installed
Yes
Yes
55 lbs
(24.9 kg)
"
" x 18
" x 18
1 ⁄4
1 ⁄2
1 ⁄4
25
(648mm x 464mm x 464mm)
© 1995-2020 Energy Saving Products Ltd.
© 1995-2020 Energy Saving Products Ltd.
120
(774cm)
120
168
(19mm)
"
1 ⁄4