1801UDSBD-4E,--EN, Pag. 14/35
9
HANGING THE HEATER
Warning:
Check the supporting structure to verify that it has sufficient
load-carrying capacity to support the unit weight. Suspend
the heater only from the threaded nut retainers or with a
manufacturer provided kit. DO NOT suspend from the heat
-
er cabinet panels.
Do not place or add additional weight to the suspended
heater.
Before suspending the heater, check the supporting structure to
verify that it has sufficient load-carrying capacity to support the
weight of the unit.
Leave the unit on the pallet. If the bottom of the unit is not
supported or protected damage can occur.
The heater is supplied with four point suspension. All points
must be used. Two threaded nut retainers are provided on each
side of the top of the heater. See figure 6 for hanger rod size.
UDSBD-4E
015
020
025
030
035
kg
50
53
71
74
125
UDSBD-4E
043
050
055
064
kg
131
131
148
153
Figure 7 : Suspending the heater with rods from the
threaded nut retainers
Add a nut to lock the
M10x1.5 hanger rod to the
heater
Detail
Be sure that the threaded hanger rods are locked to the heater
as illustrated in figure 6. Recommended maximum hanger
rod length is 1.8m. Where longer drops are required, ensure
that restraints are fitted to prevent excess lateral movement
and supports are adequately sized.
Table 6 : Weights
10
GAS PIPING & PRESSURES
All piping must be in accordance with requirements outlined in
the National Gas Codes (different for each country). Gas sup
-
ply piping installation should also conform with good practice
and any local codes. Support gas piping with pipe hangers,
metal strapping, or other suitable material.
Do not rely on
the heater to support the gas pipe.
All sealing products shall be resistant to the action of liquefied
petroleum gas or any other chemical constituents of the gas
being supplied.
Install a ground joint union and manual shutoff the gas cock
upstream of the unit control system.
The unit is equipped with a nipple that extends outside the
cabinet. The gas connection is 1/2” or 3/4”, dependent on the
size of the unit.
Leak test all connections by brushing on a leak detecting
solution.
Warnings:
All components of a gas supply system must be leak tested
prior to placing equipment in service.
NEVER TEST FOR
LEAKS WITH AN OPEN FLAME.
Failure to comply could
result in personal injury, property damage or death.
This appliance is equipped for a maximum gas supply
pressure of 50 mbar.
Pressure testing supply piping
Test pressures above 50mbar :
Disconnect the heater
and manual valve from the gas supply line which is to be
tested. Cap or plug the supply line.
Test pressures below 50mbar :
Before testing, close the
manual valve on the heater.
Table 7 : Diameter gas connection
UDSBD-4E
Nat gas/
Propane
Model 015 through 030
Model 035 through 064
1/2”
3/4”
Figure 8 : gas connection
