Hi-Velocity RBM-100, Installation Manual

Page: 9 / 12

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© 1995-2020 Energy Saving Products Ltd. © 1995-2020 Energy Saving Products Ltd.
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).
Duct Sizing
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
+20%
is allowable for sizing
return ducts that connect to the RBM or Hi-Velocity Systems unit.
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.
Table 03 – Return Air Duct Sizes
Unit Rigid Ø Flex Ø
Min Sq.
Inches
(Sq. cm)
50/51/52
12”
(305mm)
14”
(356mm)
120
(774cm)
70/71
12”
(305mm)
14”
(356mm)
120
(774cm)
100/101
14”
(356mm)
16”
(406mm)
168
(1084cm)
Remember: When using flexible duct for return air, use
one duct size larger due to the higher friction loss.
Important: When connecting a round
Return Air to the RBM coil, a round to
rectangular transition is required.
Specifications RBM-50 RBM-70 RBM-100
Matching Fan Coil
HE-Z/HE-B/HE-50/51
HV-50/51/52
CU-51
LV-50
HE-Z/HE-B/HE/HV-70/71
LV-70
HE-Z/HE-P/HE-B/HE/HV-100/101
Part Number 41090300050 41090300070 41090300100
Tons
(1)
1.5 - 2.0
(5.3 - 7.0 kW)
2.5 - 3.0
(8.8 - 10.6 kW)
3.5 - 5.0
(12.3 - 17.6 kW)
Refrigerant Type R-410A R-410A R-410A
TX Cooling MBH
(2)
18-24
(5.3-7.0 kW)
30-36
(8.8-10.6 kW)
42-60
(12.3-17.6 kW)
Latent Cooling MBH 6.8-8.9
(2.0-2.6 kW)
11.7-13.7
(3.4-4.0 kW)
16.0-22.2
(4.7-6.5 kW)
Fin Material Aluminum Aluminum Aluminum
Tubing Material Copper Copper Copper
Type of Fins .006 Al
(0.1524mm)
.006 Al
(0.1524mm)
.006 Al
(0.1524mm)
Connection
Sizes
Liquid Line (Lq) 3/8 ”
(9.5mm)
3/8 ”
(9.5mm)
3/8 ”
(9.5mm)
Suction Line (S) 7/8 ”
(22.3mm)
7/8 ”
(22.3mm)
7/8 ”
(22.3mm)
Drain Connection 3/4 ” M CPVC
(19mm)
3/4 ” M CPVC
(19mm)
3/4 ” M CPVC
(19mm)
TXV with Built in Check Valve & Bypass
Pre-Installed Pre-Installed Pre-Installed
Access Ports Yes Yes Yes
Freeze Stat Yes Yes Yes
Shipping Weight 35 lbs
(15.9 kg)
45 lbs
(20.4 kg)
55 lbs
(24.9 kg)
Module Size (L x W x H)
14
1
⁄2
”
x 18
1
⁄4
”
x 18
1
⁄4
”
(368mm x 464mm x 464mm)
19
1
⁄2
”
x 18
1
⁄4
”
x 18
1
⁄4
”
(495mm x 464mm x 464mm)
25
1
⁄2
”
x 18
1
⁄4
”
x 18
1
⁄4
”
(648mm x 464mm x 464mm)
-9- -9-
Important: When using flexible duct for
return air, use one duct size larger due to
the higher friction loss.
Module RBM
RBM Refrigerant Base Module Installation
(2) Smaller condensers may be matched to the fan coil when needed (match TXV to condenser size)
(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 eight outlets per ton) per ton) MBH - Thousand British Thermal Units per Hour
TX - Thermal Expansion
TXV - Thermal Expansion Valve