Slant/Fin DHWG User Manual
INSTALLATION INSTRUCTIONS
D O M E S T I C H O T W A T E R G E N E R A T O R
DHWG designed for use with Slant/Fin Bobcat and Lynx series
and other similar boilers with DHW priority control capabilities.
Contents Page
Components Included . . . . . . . . . . . . . . . . . . . . . . . . . 2
Dimensions & Specifications . . . . . . . . . . . . . . . . . . . . 3
Wall Mounting Instructions. . . . . . . . . . . . . . . . . . . . . . 3
Water Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Warning - Hot Water Can SCald!
A tempering valve is recommended to be installed on
the hot water outlet to all fixtures where direct user contact can be made with the water supplied by the DHW
system, to prevent any possible scalding conditions. See
Figure 3 for the appropriate installation method of this
device (not supplied with the DHWG system).
Heating Contractor
Address
Phone Number
Printed in U.S.A. 111 PUBLICATION DHWG-40
Part No. 67 5025
Model Number
Serial Number
Installation Date
DHWG Domestic Hot Water Generator
Installation Instructions
Use these instructions in conjunction with the boiler Installation and Operating
Instructions (publication BA-40 for Bobcat and LX1-40 for Lynx boilers) for utilizing this
domestic hot water generator with the boiler.
Components included:
1. See Figure 1 for the identification and location of each component and piping
connection provided in the DHWG system.
2. The DHWG pump is sized for the required flow rate through the plate exchanger
to provide adequate hot water production.
3. A flow switch is provided to detect any flow of domestic water, and will energize
the DHWG pump and give a call for the burner to operate as required for the demand.
4. DHWG pump provided has integral flow check, to prevent water flow in
the DHW boiler loop when it is running for space heating demand.
Figure 1. Components and piping of DHWG.
2
DHWG Domestic Hot Water Generator
Dimensions:
Width = 17" Height = 12" Depth = 83⁄8"
Specifications:
Weight (empty) = 21 lbs
Water content = 0.2 gallons
Piping connections = 3/4" nom. I.D. copper
Min. DHW flow = 0.3 gpm
Max. working pressure = 125 psi
Mounting to a Wall:
1. DHWG must be installed with water pipes at right or left
side of the unit (see figure 2).
Figure 2.
2. Be sure that the wall is vertically plumb, and capable
of carrying the weight of the DHWG system and all
associated piping, when full of water. See the
specifications above.
3. The system may be mounted onto a combustible wall,
but the water piping must be kept a minimum of 1” away
from any combustible materials.
4. For stud type walls, be sure that there are studs available
in the desired location, and the appropriate fasteners are
utilized for the wood or metal stud type and weight
capacity.
5. For masonry walls, utilize anchors of the appropriate
design for the material and weight capacity.
6. Do not attempt to support the system with anchors driven
into sheetrock only.
Table 1. DHWG pressure drop vs. flow
Temp.
rt –˚F
100
80
70
60
55
Table 2. DHWG temperature rise vs. water flow*
LX-85A
Boiler
1.4
1.8
2.1
2.5
2.8
DHWG Flow Rate–GPM
LX-90
Boiler
1.6
2.0
2.3
2.7
3.0
B-120A or LX-120
Boiler
2.0
2.5
3.0
3.5
4.0
LX-150
Boiler
2.3
3.3
4.0
4.5
5.0
B-200A
Boiler
2.5
3.75
4.75
5.75
6.5
3
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